Automatic Transmission Acura ZDX I

Scheme 1

Scheme 2

How to Check for DTCs with the Honda Diagnostic System (HDS)

When the powertrain control module (PCM) senses an abnormality in the input or output system, the D indicator (A) in the gauge control module (B) will usually blink.

Scheme 3

When the Honda Diagnostic System (HDS) is connected to the data link connector (DLC) (A) located under the driver's side of the dashboard, and when the ignition switch is turned to ON (II), or the engine start/stop button is pressed to select the ON mode, and the appropriate menu is selected, it will indicate the diagnostic trouble code (DTC).

Scheme 4

If the D indicator or the malfunction indicator lamp (MIL) has been reported on, or if a driveability problem is suspected, follow this procedure

1. Connect the HDS to the DLC. (See the HDS user's manual for specific instructions.)
2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode. Make sure the HDS communicates with the PCM. If it does not, go to the DLC circuit troubleshooting (see «DLC CIRCUIT TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/communication-devices/#communication-systems-f-can-k-line__dlc-circuit-troubleshooting) ).
3. Check for Pending or Confirmed DTCs with the HDS.
4. Record the freeze data and the on-board snapshots for all fuel and emissions DTCs and A/T DTCs.
5. If there is a fuel and emissions DTC, first check the fuel and emissions system as indicated by the DTC.
6. Clear the DTC and data.
7. Drive the vehicle for several minutes under the same conditions as those indicated by the freeze data, and then recheck for the DTC. If the A/T DTC returns, go to the indicated «DTC'S TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) . If the DTC does not return, there was an intermittent problem within the circuit. Make sure all pins and terminals in the circuit are tight.

Symptom Troubleshooting Versus DTC Troubleshooting

Some symptoms will not set DTCs or cause the D indicator to blink. If the MIL was reported ON or the D indicator has been blinking, check for DTCs. If the vehicle has an abnormal symptom, and there are no DTCs stored, do the symptom troubleshooting. Check the list of probable cause(s) for the symptom, in the sequence listed, until you find the problem.

How to Check for DTCs with the SCS Mode (retrieving the flash codes)

Note. The preferred method is to use the HDS to retrieve the DTCs.

When the PCM senses an abnormality in the input or output system, the D indicator (A) in the gauge control module (B) will usually blink.

Scheme 5

When the D indicator has been reported on, connect the HDS to the DLC (A) located under the driver's side of the dashboard. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, select SCS mode, then the D indicator will indicate (blink) the DTC.

Scheme 6

If the D indicator and the MIL come on at the same time, or if a driveability problem is suspected, follow this procedure

Scheme 7

Scheme 8

1. Connect the HDS to the DLC. (See the HDS user's manual for specific instructions.)
2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode. Make sure the HDS communicates with the PCM. If it does not, go to the DLC circuit troubleshooting (see «DLC CIRCUIT TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/communication-devices/#communication-systems-f-can-k-line__dlc-circuit-troubleshooting) ).
3. Select SCS mode, then observe the D indicator in the gauge control module. Codes 1 through 9 are indicated by individual short blinks. Code 10 and above are indicated by a series of long and short blinks. One long blink equals 10 short blinks. Add the long and short blinks together to determine the code.
4. If there is a fuel and emissions DTC, first check the fuel and emissions system as indicated by the DTC.
5. Clear the DTC and data.
6. If the freeze data is available, drive the vehicle for several minutes with periods of wide open throttle, steady cruise, and stop and go, and then recheck for DTCs. If the A/T DTC returns, go to the indicated «DTC'S TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) . If the DTC does not return, there was an intermittent problem within the circuit. Make sure all pins and terminals in the circuit are tight.

How to Troubleshoot Circuits at the PCM Connectors

Note. The PCM overwrites data and monitors the EVAP system for about an hour after the ignition switch is turned to LOCK (0), or the engine start/stop button is pressed to select the OFF mode. Jumping the SCS line after turning the ignition switch to LOCK(0), or press the engine start/stop button to select the OFF mode cancels this function. Disconnecting the PCM during this function, without jumping the SCS line first, can damage the PCM.

Scheme 9

Scheme 10

Scheme 11

1. Jump the SCS line with the HDS.
2. Remove the bracket (D), then remove the cover (E).
3. Disconnect PCM connectors A, B, and C. NOTE: PCM connectors A, B, and C have symbols (A=[], B=delta, C=o) embossed on them for identification.
4. When diagnosis/troubleshooting is done at the PCM connector, use the terminal test port (A) above the terminal you need to check.
5. Connect one side of the patch cord terminals (A) to a commercially available digital multimeter (B), and connect the other side of the terminals (C) to a commercially available banana jack (Pomona Electronics Tool No. 3563 or equivalent) (D).
6. Gently contact the pin probe (male) at the terminal test port from the terminal side. Do not force the tips into the terminals. NOTE: For accurate results, always use the pin probe (male). To prevent damage to the connector terminals, do not insert test equipment probes, paper clips, or other substitutes. Damaged terminals cause a poor connection and an incorrect measurement. Do not puncture the insulation on a wire. Punctures can cause poor or intermittent electrical connections.

Scheme 12

1. Connect the HDS to the DLC (A) located under the driver's side of the dashboard.
2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
3. Make sure the HDS communicates with the PCM. If it does not, go to the DLC circuit troubleshooting (see «DLC CIRCUIT TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/communication-devices/#communication-systems-f-can-k-line__dlc-circuit-troubleshooting) ).
4. Clear the DTC(s) on the HDS screen.

OBD Status

The OBD status shows the current system status of each DTC and all of the parameters. This function is used to see if a repair was successfully completed. The results of diagnostic tests for the DTC are displayed as

1. PASSED: The on-board diagnosis is successfully completed.
2. FAILED: The on-board diagnosis has completed but failed.
3. NOT COMPLETED: The on-board diagnosis was running but is out of the enable conditions of the DTC.

How to End a Troubleshooting Session (required after any troubleshooting)

Note. Reset the PCM/TCM with the HDS while the engine is stopped.

1. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, and wait for 30 seconds, then disconnect the HDS from the DLC.
3. Start the engine with the shift lever in P or N, and warm it up to normal operating temperature (the radiator fan comes on).
4. To verify that the problem is repaired, test-drive the vehicle for several minutes at speeds over 31 mph (50 km/h) or under the same conditions as those indicated by the freeze data.

PCM/TCM Reset

Note. To reset the PCM/TCM, initialize only the automatic transmission memory stored in the PCM or the TCM.

1. Select the A/T system with the HDS.
2. Reset the PCM/TCM with the HDS while the engine is stopped.
3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
4. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, and wait for 30 seconds, then disconnect the HDS from the DLC.

Substitute the PCM

Refer to Substituting the PCM (see SUBSTITUTING THE PCM ).

Failure Reproduction Technique

Make sure to follow these points while the vehicle is raised on a lift for the test-drive.

1. Disable the VSA by pressing the VSA OFF button.
2. VSA DTC(s) may come on when test-driving on a lift. If the VSA DTC(s) come on, clear the DTC(s) with the HDS.
3. Use the sequential sportshift mode to manually select gears.

Self-Diagnosis

If the PCM detects the failure of a signal from a sensor, a switch, a solenoid valve, or from another control unit, it stores Pending or Confirmed DTCs. Depending on the failure, a Confirmed DTC is stored in either the first or the second drive cycle. When a Confirmed DTC is stored, the PCM blinks the D indicator and/or turns on the MIL by a signal sent to the gauge control module via F-CAN.

1. One Drive Cycle Detection Method When an abnormality occurs in the signal from a sensor, a switch, a solenoid valve, or from another control unit, the PCM stores a Pending or Confirmed DTC for the failure and blinks the D indicator and/or turns on the MIL immediately.
2. Two Drive Cycle Detection Method When an abnormality occurs in the signal from a sensor, a switch, a solenoid valve, or from another control unit in the first drive cycle, the PCM stores a Pending DTC. The D indicator and the MIL do not turns on at this time. If the failure continues in the second drive cycle, the PCM stores a Confirmed DTC and blinks the D indicator and/or turns on the MIL.

Fail-Safe Function

When an abnormality occurs in the signal from a sensor, a switch, a solenoid valve, or from another control unit, the PCM ignores that signal and substitutes a pre-programmed value for that signal to allow the automatic transmission to continue operating. This causes a DTC to be stored and the D indicator blink and/or the MIL to come on. The transmission may not shift normally during fail-safe operation. Do not run the test driving diagnosis when the MIL is ON, or when the D indicator is blinking.

DTC Troubleshooting Index

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ).

Symptom Troubleshooting Index

Note. Do an all DTC check with the HDS and troubleshoot those first before following the repair procedures listed in the index.

Scheme 13

Scheme 14

General Description

The automatic transmission is a transverse-mounted five-shaft design with an electronically controlled hydraulic circuit that provides six forward speeds and one in reverse. Engine output is transmitted through the torque converter, a combination of shafts which hold gears and clutches and a differential that transmits power to the driving wheels. This model also has a transfer assembly which transmits power to the SH-AWD differential.

Shafts, Gears, and Clutches

The clutches and gears are installed on the input shaft (mainshaft), the secondary shaft, the third shaft, and the idler gear shaft. These gears are in constant mesh with those on the output shaft (countershaft). When specific gears are engaged by the clutches, power is transmitted through the mainshaft, to the secondary shaft, the third shaft, the idler gear shaft, and/or the countershaft, then to the final driven gear of the differential to provide drive.

Shift Control Mechanism

To perform hydraulic control, shift control, and lock-up control of the automatic transmission, the PCM controls shift solenoid valves A, B, and C, line pressure solenoid valve A, and automatic transmission (A/T) clutch pressure control solenoid valves A, B, C, and D. The PCM switches each shift solenoid valve ON and OFF. This changes the positions of the shift valves in the valve bodies which open and close ports to send hydraulic pressure to the appropriate clutch. A/T clutch pressure control solenoid valves A, B, C, and D control the clutch pressure regulated by each of them, which allows smooth shifts and lock-up of the torque converter.

Electronic Control

Shifting and lock-up are achieved by a system of solenoid valves driven by the PCM, which controls ATF flow through various valves in the valve bodies to select the appropriate gears for all driving conditions.

Hydraulic Control

The valve bodies consist of the main valve body, the regulator valve body, the secondary valve body, the stator shaft support, and the manual valve body. They are installed to the torque converter housing. Fluid regulated by the regulator valve passes through the manual valve to the various control valves. All the clutches receive fluid from the shaft internal hydraulic circuit. Also, the hydraulic control body is adapted to the secondary valve body, which includes the main shift hydraulic circuit, the solenoid valve, the hydraulic switch, etc. to shorten the fluid passage and optimize the hydraulic pressure.

Torque Converter

The torque converter is connected to the flywheel. It consists of an impeller (pump), turbine, stator, and torque converter clutch piston, which uses ATF to transmit engine power to the input shaft (mainshaft). Around the outside of the torque converter housing, the starter ring gear is installed, which is used to start the engine.

Lock-Up Mechanism

The lock-up causes the input shaft (mainshaft) to rotate at the same speed as the engine crankshaft by engaging the torque converter cover with the turbine by the torque converter clutch. Together with the hydraulic control, the PCM optimizes the timing and degree of lock-up. The lock-up mechanism operates in D (during accelerating: 1st, 2nd, 3rd, 4th, 5th, and 6th gears/during decelerating: 2nd, 3rd, 4th, 5th, and 6th gears), S with automatic shift mode (during accelerating: 1st, 2nd, 3rd, 4th, and 5th gears/during decelerating: 2nd, 3rd, 4th, and 5th gears), and S with sequential sportshift mode (during accelerating: 1st, 2nd, 3rd, 4th, 5th, and 6th gears/during decelerating: 2nd, 3rd, 4th, 5th, and 6th gears). The torque converter clutch is in the torque converter. The multi-plate torque converter clutch increases the torque capacity and extends the lock-up area, improving fuel economy.

Gear Selection

The shift lever has five positions; P: PARK, R: REVERSE, N: NEUTRAL, D: DRIVE 1st through 6th gear ranges with automatic shift mode and D-paddle shift mode, and S: DRIVE 1st through 5th gear ranges with automatic shift mode and 1st through 6th gear ranges with sequential sportshift mode.

Starting the engine is possible only in P and N because of a neutral-safety switch built into the transmission range switch.

The A/T gear position indicator in the gauge control module shows which shift lever position has been selected.

Shift Indicator

When you operate the paddle shift switch, the shift indicator in the gauge control module displays the gear selected. The shift indicator also displays the gear selected in the D-paddle shift mode and the sequential sportshift mode.

Transfer Assembly

The transfer assembly consists of the transfer hypoid drive gear/shaft assembly, the transfer output shaft (hypoid gear), and the companion flange. The transfer assembly is on the rear side of the transmission, beside the differential. The transfer drive gear on the differential drives the transfer output shaft in the transmission. The transfer output shaft in the transmission is connected to the transfer hypoid drive gear/shaft assembly by splines. Power is transmitted from the transfer drive gear on the differential to the rear differential via the transfer assembly and the propeller shaft.

Clutches and Gears

The six speed automatic transmission applies hydraulic pressure to the clutches to engage or disengage the gears. When hydraulic pressure is introduced into the clutch drum, the clutch piston moves and presses the steel plates and the clutch discs. Power is then transmitted through the engaged clutch pack to its gear mounted on the shaft. Likewise, when the hydraulic pressure is bled from the clutch drum, the piston releases the steel plates and the clutch discs. Then the steel plates rotate with the clutch drum, and the clutch discs rotate with gear on the shaft. The clutch discs are released from the steel plates. This allows the clutch disc to spin independently, transmitting no power.

1st Clutch

The 1st clutch engages/disengages 1st gear, and is located at the right end of the secondary shaft. The 1st clutch is supplied hydraulic pressure through the secondary shaft by a circuit connected to the internal hydraulic circuit.

2nd Clutch

The 2nd clutch engages/disengages 2nd gear, and is located at the left end of the secondary shaft. The 2nd clutch is joined back-to-back to the 5th clutch. The 2nd clutch is supplied hydraulic pressure through the secondary shaft by a circuit connected to the internal hydraulic circuit.

3rd Clutch

The 3rd clutch engages/disengages 3rd gear, and is located at the left end of the mainshaft. The 3rd clutch is joined back-to-back to the 6th clutch. The 3rd clutch is supplied hydraulic pressure through the mainshaft by a circuit connected to the internal hydraulic circuit.

4th Clutch

The 4th clutch engages/disengages 4th gear, and is located at the right end of the third shaft. The 4th clutch is supplied hydraulic pressure through the third shaft by a circuit connected to the internal hydraulic circuit. The vehicle also moves backward when the 4th clutch is engaged while the reverse selector hub engages with the reverse gear.

5th Clutch

The 5th clutch engages/disengages 5th gear, and is located at the left end of the secondary shaft. The 5th clutch is joined back-to-back to the 2nd clutch. The 5th clutch is supplied hydraulic pressure through the secondary shaft by a circuit connected to the internal hydraulic circuit.

6th Clutch

The 6th clutch engages/disengages 6th gear, and is located at the left end of the mainshaft. The 6th clutch is joined back-to-back to the 3rd clutch. The 6th clutch is supplied hydraulic pressure through the mainshaft by a circuit connected to the internal hydraulic circuit.

One-Way Clutch

The one-way clutch is located between the countershaft 1st gear and the park gear. The park gear is splined with the countershaft. The countershaft 1st gear engages the outer race surface of the one-way clutch, and the park gear engages the inner race surface of the one-way clutch. The one-way clutch locks when power is transmitted from the secondary shaft 1st gear to the countershaft 1st gear. The 1st clutch and 1st gear remain engaged in 1st, 2nd, 3rd, 4th, 5th, and 6th gear ranges in D or S. However, the one-way clutch disengages when the 2nd, 3rd, 4th, 5th, or 6th clutches and gears are applied in D or S. This is because the rotational speed of the countershaft exceeds that of 1st gear, which causes the one-way clutch to free-wheel with the 1st clutch still engaged.

Scheme 15

Gear operation

Gears on the mainshaft

1. 3rd gear is engaged/disengaged with the mainshaft by the 3rd clutch.
2. 6th gear is engaged/disengaged with the mainshaft by the 6th clutch.
3. 4th gear is splined with the mainshaft and rotates with the mainshaft.

Gears on the secondary shaft

1. 1st gear is engaged/disengaged with the secondary shaft by the 1st clutch.
2. 2nd gear is engaged/disengaged with the secondary shaft by the 2nd clutch.
3. 5th gear is engaged/disengaged with the secondary shaft by the 5th clutch.
4. Idler gear is splined with the secondary shaft, and rotates with the secondary shaft.

Gears on the third shaft

1. 4th gear is engaged/disengaged with the third shaft by the 4th clutch.
2. Reverse selector hub is splined with the third shaft and rotates with the third shaft.
3. Reverse selector on the reverse selector hub switches between the reverse gear and 6th gear.

Gears on the countershaft

1. Final drive gear is integral with the countershaft.
2. 2nd gear, 5th gear, and park gear are splined with the countershaft, and rotate with the countershaft.
3. 1st gear is engaged with the park gear splined with the countershaft by the one-way clutch when accelerating. It is disengaged from the park gear by the one-way clutch when decelerating.

Gears on the idler gear shaft

1. Idler gear is press-fitted with the idler gear shaft, and rotates with the idler gear shaft.
2. Idler gear is engaged with the mainshaft 4th gear and the secondary shaft idler gear, and transmits the mainshaft rotation to the secondary shaft.

P Position

Hydraulic pressure is not applied to the clutches; power is not transmitted to the countershaft. The countershaft is locked by the park pawl interlocking the park gear on the countershaft.

N Position

Engine output transmitted from the mainshaft drives the mainshaft 4th gear, the third shaft 4th gear, the idler gear shaft idler gear, and the secondary shaft idler gear, but since hydraulic pressure is not applied to the clutches output is not transmitted to the countershaft. In this position, the position of the reverse selector differs according to whether the shift lever shifted from D or R

Scheme 16

1. When shifted from D, the reverse selector engages with the third shaft 6th gear and the reverse selector hub and the 6th gear engages with the third shaft.
2. When shifted from R, the reverse selector engages with the third shaft reverse gear and the reverse selector hub and the reverse gear engages with the third shaft.

D Position and S Position with Automatic Shift Mode

In D, the optimum gear is automatically selected from 1st, 2nd, 3rd, 4th, 5th, and 6th gears; and 1st, 2nd, 3rd, 4th, and 5th gears in S with automatic shift mode according to conditions between the accelerator pedal command or position (engine loading) and the vehicle speed.

Scheme 17

1. Hydraulic pressure is applied to the 1st clutch, then the 1st clutch engages the secondary shaft 1st gear with the secondary shaft.
2. Mainshaft rotation is transmitted to the mainshaft 4th gear splined with the mainshaft.
3. The mainshaft 4th gear drives the secondary shaft idler gear splined with the secondary shaft and the secondary shaft via the idler gear shaft idler gear.
4. The secondary shaft and the secondary shaft 1st gear engaged by the 1st clutch, and the secondary shaft 1st gear drives the countershaft 1st gear.
5. The countershaft 1st gear drives the park gear splined with the countershaft via the one-way clutch.
6. Power is transmitted from the countershaft to the final drive gear, which in turn drives the final driven gear and the transfer drive gear.
7. As the final driven gear turns the differential assembly, power is transmitted through the transfer drive gear to the transfer output shaft that drives the transfer hypoid drive gear/shaft and the transfer output shaft (hypoid gear).

Scheme 18

1. Hydraulic pressure is applied to the 2nd clutch, then the 2nd clutch engages the secondary shaft 2nd gear with the secondary shaft.
2. Mainshaft rotation is transmitted to the mainshaft 4th gear splined with the mainshaft.
3. The mainshaft 4th gear drives the secondary shaft idler gear splined to the secondary shaft and the secondary shaft via the idler gear shaft idler gear.
4. The secondary shaft and the secondary shaft 2nd gear engaged by the 2nd clutch, and the secondary shaft 2nd gear drives the countershaft 2nd gear splined with the countershaft and the countershaft.
5. Power is transmitted from the countershaft to the final drive gear, which in turn drives the final driven gear and the transfer drive gear.
6. As the final driven gear turns the differential assembly, power is transmitted through the transfer drive gear to the transfer output shaft that drives the transfer hypoid drive gear/shaft and the transfer output shaft (hypoid gear).
7. Hydraulic pressure is also applied to the 1st clutch, but since the rotation speed of the countershaft exceeds that of 1st gear, power output from 1st gear is cut off at the one-way clutch.

Scheme 19

1. Hydraulic pressure is applied to the 3rd clutch, then the 3rd clutch engages the mainshaft 3rd gear with the mainshaft.
2. Mainshaft rotation is transmitted from the mainshaft 3rd gear engaged with the 3rd clutch to the countershaft 2nd gear splined with the countershaft.
3. Power is transmitted from the countershaft to the final drive gear, which in turn drives the final driven gear and the transfer drive gear.
4. As the final driven gear turns the differential assembly, power is transmitted through the transfer drive gear to the transfer output shaft that drives the transfer hypoid drive gear/shaft and the transfer output shaft (hypoid gear).
5. Hydraulic pressure is also applied to the 1st clutch, but since the rotation speed of the countershaft exceeds that of 1st gear, power output from 1st gear is cut off at the one-way clutch.

Scheme 20

1. Hydraulic pressure is applied to the D inhibitor valve to engage the reverse selector with the third shaft 6th gear while the shift lever is in the forward range (D and S).
2. Hydraulic pressure is applied to the 4th clutch, then the 4th clutch engages the third shaft 4th gear with the third shaft.
3. Mainshaft rotation is transmitted to the third shaft 4th gear via the mainshaft 4th gear splined with the mainshaft.
4. Rotation of the third shaft 4th gear is transmitted to the third shaft 6th gear from the reverse selector hub via the reverse selector.
5. The third shaft 6th gear drives the countershaft 5th gear splined with the countershaft and the countershaft via the mainshaft 6th gear.
6. Power is transmitted from the countershaft to the final drive gear, which in turn drives the final driven gear and the transfer drive gear.
7. As the final driven gear turns the differential assembly, power is transmitted through the transfer drive gear to the transfer output shaft that drives the transfer hypoid drive gear/shaft and the transfer output shaft (hypoid gear).
8. Hydraulic pressure is also applied to the 1st clutch, but since the rotation speed of the countershaft exceeds that of 1st gear, power output from 1st gear is cut off at the one-way clutch.

Scheme 21

1. Hydraulic pressure is applied to the 5th clutch, then the 5th clutch engages the secondary shaft 5th gear with the secondary shaft.
2. Mainshaft rotation is transmitted to the mainshaft 4th gear splined with the mainshaft.
3. The mainshaft 4th gear drives the secondary shaft idler gear splined with the secondary shaft and the secondary shaft via the idler gear shaft idler gear.
4. The secondary shaft and the secondary shaft 5th gear engaged by the 5th clutch, and the secondary shaft 5th gear drives the countershaft 5th gear splined with the countershaft and the countershaft.
5. Power is transmitted from the countershaft to the final drive gear, which in turn drives the final driven gear and the transfer drive gear.
6. As the final driven gear turns the differential assembly, power is transmitted through the transfer drive gear to the transfer output shaft that drives the transfer hypoid drive gear/shaft and the transfer output shaft (hypoid gear).
7. Hydraulic pressure is also applied to the 1st clutch, but since the rotation speed of the countershaft exceeds that of 1st gear, power output from 1st gear is cut off at the one-way clutch.

Scheme 22

1. Hydraulic pressure is applied to the 6th clutch, then the 6th clutch engages the mainshaft 6th gear with the mainshaft.
2. Mainshaft rotation is transmitted from the mainshaft 6th gear engaged with the 6th clutch to the countershaft 5th gear splined with the countershaft.
3. Power is transmitted from the countershaft to the final drive gear, which in turn drives the final driven gear and the transfer drive gear.
4. As the final driven gear turns the differential assembly, power is transmitted through the transfer drive gear to the transfer output shaft that drives the transfer hypoid drive gear/shaft and the transfer output shaft (hypoid gear).
5. Hydraulic pressure is also applied to the 1st clutch, but since the rotation speed of the countershaft exceeds that of 1st gear, power output from 1st gear is cut off at the one-way clutch.

Scheme 23

1. Hydraulic pressure is applied to the D inhibitor valve to engage the reverse selector with the third shaft reverse gear while the shift lever is in R.
2. Hydraulic pressure is applied to the 4th clutch, then the 4th clutch engages the third shaft 4th gear with the third shaft.
3. Mainshaft rotation is transmitted to the third shaft 4th gear via the mainshaft 4th gear splined with the mainshaft.
4. Rotation of the third shaft 4th gear is transmitted from the reverse selector hub that rotates with the third shaft to the third shaft reverse gear, via the reverse selector.
5. The third shaft reverse gear drives the mainshaft 3rd gear via the reverse idler gear.
6. The mainshaft 3rd gear drives the countershaft 2nd gear splined with the countershaft and the countershaft.
7. The rotation direction of the countershaft is changed by the reverse idler gear.
8. Power is transmitted from the countershaft to the final drive gear, which in turn drives the final driven gear and the transfer drive gear.
9. As the final driven gear turns the differential assembly, power is transmitted through the transfer drive gear to the transfer output shaft that drives the transfer hypoid drive gear/shaft and the transfer output shaft (hypoid gear).

The electronic control system consists of the PCM, sensors, and eight solenoid valves.

Functional Diagram

The PCM receives input signals from the sensors, switches, and other control units, processes data, and outputs signals for the engine control system and the A/T control system. The A/T control system includes shift control, clutch pressure control, lock-up control, and A/T system hydraulic control. The PCM switches the shift solenoid valves and the A/T clutch pressure control solenoid valves ON and OFF in a specific sequence to control gear selection and torque converter clutch lock-up. It also controls the appropriate operating hydraulic pressure to the automatic transmission.

Scheme 24

Shift Control

The PCM instantly determines which gear should be selected by various inputs from sensors and switches, and it actuates the solenoid valves to control gear selection.

Shift solenoid valve

Shift solenoid valves A, B, and C switch to the hydraulic pressure supply circuit to the clutch. Shift solenoid valves A, B, and C are normally closed (ON-OPEN/OFF-CLOSE); the normally closed solenoid valve port opens to allow ATF to pass through when the PCM turns it ON, and the port closes, blocking fluid flow when turned OFF.

A/T clutch pressure control solenoid valve

A/T clutch pressure control solenoid valves A, B, C, and D apply hydraulic pressure to each clutch via the hydraulic valve body circuit. A/T clutch pressure control solenoid valve D supplies hydraulic pressure to the torque converter clutch. A/T clutch pressure control solenoid valves A, B, C, and D are normally closed (ON-OPEN/OFF-CLOSE); the normally closed solenoid valve port opens to allow ATF to pass through when the PCM turns it ON, and the port closes, blocking fluid flow when turned OFF. These solenoid valves are controlled by the current and are duty controlled depending on the vehicle speed and the throttle position.

Line pressure solenoid valve

Line pressure solenoid valve A controls the hydraulic pressure in the hydraulic control system valve bodies of the automatic transmission. Line pressure solenoid valve A is normally closed (ON-OPEN/OFF-CLOSE); the normally closed solenoid valve port opens to allow ATF to pass through when the PCM turns it ON, and the port closes, blocking fluid flow when turned OFF.

The combination of driving signals to solenoid valves for each gear are in the following table.

Shift Control - Grade Logic Control

The grade logic control system is used to control shifting in D, and in S with automatic shift mode. The PCM compares actual driving conditions with programmed driving conditions, based on the input signal from the throttle position sensor, the engine coolant temperature sensor, the barometric pressure sensor, the brake pedal position switch, and the transmission range switch to switch shifting control from the normal control to the ascending or descending control when the PCM determines that the vehicle is ascending a slope or being driven in the rain.

Scheme 25

Grade Logic Control: Ascending Control

When the PCM determines that the vehicle is climbing a hill in D and in S with automatic shift mode, the system extends the engagement area of 2nd gear, 3rd gear, 4th gear, and 5th gear to prevent the transmission from frequently shifting between 2nd and 3rd gears, between 3rd and 4th gears, between 4th and 5th gears, and between 5th and 6th gears, so the vehicle can run smoothly and have more power when needed.

Note. Shift commands stored in the PCM between 2nd and 3rd gears, between 3rd and 4th gears, between 4th and 5th gears, and between 5th and 6th gears, enable the PCM to automatically select the most suitable gear based on the steepness of the grade.

Scheme 26

Grade Logic Control: Descending Control

When the PCM determines that the vehicle is going down a hill in D, and in S with automatic shift mode, the upshift speed from 5th to 6th gear, from 4th to 5th gear, from 3rd to 4th gear, and from 2nd to 3rd (when the throttle is closed) becomes higher than the set speed for flat road driving to extend the 5th gear, 4th gear, 3rd gear, and 2nd gear driving areas. This, in combination with engine braking from the deceleration lock-up, achieves smooth driving when the vehicle is descending. There are descending modes with different 5th gear, 4th gear, 3rd gear, and 2nd gear driving areas based on the steepness of the grade stored in the PCM. When the vehicle is in 6th, 5th, or 4th gear, and the vehicle is decelerating while applying the brakes on a steep hill, the transmission downshifts to a lower gear. When you accelerate, the transmission then returns to a higher gear from the current position.

Deceleration Control

When the vehicle goes around a corner and needs to decelerate first and then accelerate, the PCM goes into the deceleration control mode to reduce the number of times the transmission shifts. When the vehicle is decelerating from speeds above 27 mph (43 km/h), the PCM anticipates upcoming acceleration, and shifts the transmission from 4th to 3rd earlier than normal.

Shift-Hold Control

Shift-hold control maintains transmission gear position during cornering to avoid frequently shifting. When the vehicle is cornering, the PCM extends the engagement of 2nd, 3rd, 4th, and 5th to prevent the transmission from frequently shifting between 3rd, 4th, 5th, and 6th gears. When the PCM determines that the vehicle is cornering by the accelerator pedal position, the vehicle speed, and the lateral G-force estimate from the rpm difference between each wheel, it delays the upshift from 3rd to 4th, 4th to 5th, and 5th to 6th gears, which improves the engine output and the engine braking. The transmission resumes the normal upshift pattern after the PCM determines that normal driving has resumed.

Scheme 27

Shift Control - Manual Shift Mode

The transmission is equipped with a D-paddle shift mode in D, and with a sequential sportshift mode in S.

Either mode can be activated by pressing the paddle shifter + (upshift switch) or the paddle shifter - (downshift switch) while driving with the shift lever is in D and S.

D-Paddle Shift Mode

To engage the D-paddle shift mode, press either of the steering wheel mounted paddle shifters while driving in D. In this mode, the transmission can downshift by pressing the paddle shifter -, or upshift by pressing the paddle shifter +. Each time the transmission is shifted using the paddles, the shift indicator in the gauge control module displays the current position. The display turns off when the transmission upshifts or downshifts automatically while coasting. The transmission stays in 6th gear if the paddle shifter + is pressed when driving in 6th gear, and the shift indicator displays "6" for 2 seconds, then goes off. The transmission stays in 1st gear if the paddle shifter - is pressed when driving in 1st gear, and the shift indicator displays "1" for 2 seconds, then goes off. The transmission stays in the current gear and does not upshift to the next higher gear if the paddle shifter + is pressed while driving below the minimum allowable speed, and the shift indicator blinks the number of the next higher gear several times, then returns to the number of the current gear.

Scheme 28

S Position Automatic Shift Mode and Sequential Sportshift Mode

The S position has two shifting modes; the automatic shift mode and the sequential sportshift mode. In the S position automatic shift mode, the transmission upshifts and downshifts automatically from 1st through 5th gear, if the paddle shifters are not pressed. When the paddle shifter + (upshift switch) or the paddle shifter - (downshift switch) is pressed, the automatic shift mode is canceled and the sequential sportshift mode comes into operation. The shift indicator displays the number of the selected gear. In the sequential sportshift mode, the driver can shift up and down manually from 1st through 6th gear by using the paddle shifters, much like a manual transmission. The paddle shifters are installed on the back of the steering wheel, and the driver can shift gears by pressing the paddle shifters without taking either hand off the steering wheel. In the sequential sportshift mode, the transmission must be shifted up and down by pressing the paddle shifters.

However, if the vehicle is coasting at a speed that would cause the engine to over-rev by downshifting, the transmission will not shift when the paddle shifter - is pressed. The shift indicator blinks the number of the selected gear position several times, then returns to the current gear. If the vehicle speed reaches an appropriate speed while the shift indicator is blinking, the transmission downshifts and the shift indicator displays the selected gear. Likewise, if the vehicle is driving below an appropriate speed to upshift when the paddle shifter + is pressed, the transmission will not shift. The shift indicator blinks the number of the selected gear several times, and then returns to the number of the current gear. If the vehicle speed reaches an appropriate upshift speed while the shift indicator is blinking, the transmission upshifts and the shift indicator displays the selected gear.

The sequential sportshift mode has automatic downshifting areas so the vehicle can run smoothly with more power to cope with upcoming acceleration. When coasting in 6th gear, 5th gear, or 4th gear, the transmission downshifts to the next lower gear if the vehicle slows down to the programmed speed, or by pressing the brake pedal. When the transmission decelerates to a stop, the transmission shifts to 1st gear automatically. The transmission can be shifted to 2nd gear by pressing the paddle shifter + while the vehicle is stopped, and the vehicle can start off in 2nd gear. The sequential sportshift mode is canceled when moving the shift lever to any position other than S.

Scheme 29

Clutch Pressure Control

The PCM actuates A/T clutch pressure control solenoid valves A, B, C, and D to control the clutch pressure. When shifting between gears or during lock-up, the clutch pressure is regulated by A/T clutch pressure control solenoid valves A, B, C, and D engages and disengages the clutch smoothly. The PCM receives input signals from the various sensors and switches, then processes the data, and outputs current to A/T clutch pressure control solenoid valves A, B, C, and D.

Scheme 30

Lock-Up Control

Shift solenoid valve C and A/T clutch pressure control solenoid valve D control the hydraulic pressure to switch the lock-up shift valve and lock-up ON and OFF. When the PCM actuates shift solenoid valve C and A/T clutch pressure control solenoid valve D ON, lock-up starts. A/T clutch pressure control solenoid valve D applies and regulates hydraulic pressure to the lock-up control valve to control the amount of lock-up. The lock-up mechanism operates in D (during accelerating: 1st, 2nd, 3rd, 4th, 5th, and 6th gears/during decelerating: 2nd, 3rd, 4th, 5th, and 6th gears), S with automatic shift mode (during accelerating: 1st, 2nd, 3rd, 4th, and 5th gears/during decelerating: 2nd, 3rd, 4th, and 5th gears), and S with sequential sportshift mode (during accelerating: 1st, 2nd, 3rd, 4th, 5th, and 6th gears /during decelerating; 2nd, 3rd, 4th, 5th, and 6th gears).

Scheme 31

Scheme 32

Scheme 33

Scheme 34

Scheme 35

Hydraulic Controls

The valve bodies include the main valve body, the regulator valve body, the secondary valve body, the stator shaft support, and the manual valve body. The ATF pump is driven by splines on the end of the torque converter which is attached to the engine. Fluid flows through the main regulator valve to maintain specified pressure through the manual valve body, directing pressure to each of the clutches. The hydraulic control body is attached to the secondary valve body, which includes the main shift hydraulic circuit, the solenoid valves, the hydraulic pressure switches, etc. to shorten the fluid passage and optimize the hydraulic pressure. The secondary valve body has shift solenoid valves A and B, line pressure solenoid valve A, the line pressure switch, transmission fluid pressure switch B (3rd clutch), transmission fluid pressure switch E (6th clutch), and automatic transmission (A/T) clutch pressure control solenoid valves A, B, C, and D, and is mounted to the transmission housing. Shift solenoid valve C is mounted to the torque converter housing.

Scheme 36

Main Valve Body

The main valve body contains shift valve C, the D inhibitor valve, the reverse inhibitor valve, the lock-up shift valve, the lubrication regulator valve, the lubrication shift valve, the ATF pump drive gear, and the ATF pump driven gear. The primary function of the main valve body is to switch hydraulic pressure on and off to control the hydraulic control system.

Scheme 37

Regulator Valve Body

The regulator valve body is located on the main valve body. The regulator valve body contains the main regulator valve, the cooler relief valve, the torque converter regulator valve, the lock-up control valve, the shift fork shaft, and the 4th accumulator.

Scheme 38

Main Regulator Valve

The main regulator valve maintains constant hydraulic pressure from the ATF pump to the hydraulic control system, while also providing fluid to the torque converter and the lubrication system. Fluid from ATF pump flows through the 1 cavity and the 1' cavity of the main regulator valve. Then the fluid entered in the 1' cavity pushes the main regulator valve to the spring side, this movement uncovers the fluid ports to the torque converter and the lubrication system on the main regulator valve. The fluid flows out to the torque converter and the lubrication system, then the main regulator valve returns under spring force when the pressure in the 1' cavity of the main regulator valve is lowered below that in the 1 cavity, which covers the fluid ports to the torque converter and the lubrication system. According to the level of the hydraulic pressure through the 1' cavity, the position of the main regulator valve changes, and the amount of fluid from the 1 cavity through the torque converter changes. This operation is continued maintaining the line pressure.

Scheme 39

Line Pressure Control during Low Loading

Both in D or S under low engine load condition after warming up the engine and in all ranges (P, R, N, D, or S) under the low ATF temperature condition, the PCM operates line pressure solenoid valve A, and switches the line pressure to a pressure that is lower than normal. This operation can reduce the friction in the transmission.

Scheme 40

The PCM turns line pressure solenoid valve A ON, and applies the hydraulic pressure to the PLA' cavity on the main regulator valve. When hydraulic pressure is applied to the PLA' cavity, the main regulator valve is pushed to the spring side. This operation reduces the drain port of the main regulator valve, and causes the line pressure to be lower than normal.

Scheme 41

Line Pressure Control during High Loading

Increases in hydraulic pressure according to torque are regulated by the main regulator valve using stator torque reaction. The stator shaft is splined to the stator in the torque converter, and the stator shaft arm end contacts the regulator spring cap. When the vehicle is accelerating or climbing (torque converter range), stator torque reaction occurs on the stator shaft, and the stator shaft arm pushes the regulator spring cap in the direction of the arrow in proportion to the reaction. The stator reaction spring compresses, and the main regulator valve moves to increase the line pressure which is regulated by the main regulator valve. The line pressure reaches its maximum pressure when the stator torque reaction reaches its maximum position.

Scheme 42

Secondary Valve Body

The secondary valve body contains the main shift hydraulic circuit, the solenoid valves, the hydraulic pressure switches, etc. The secondary valve body consists of shift solenoid valves A and B, line pressure solenoid valve A, A/T clutch pressure control solenoid valves A, B, C, and D, shift valves A and B, the A/T clutch pressure control solenoid valve A accumulator, the A/T clutch pressure control solenoid valve B accumulator, the A/T clutch pressure control solenoid valve C accumulator, the line pressure switch, transmission fluid pressure switch B (3rd clutch), and transmission fluid pressure switch E (6th clutch). The secondary valve body is mounted on the transmission housing.

Scheme 43

Manual Valve Body

The manual valve body is located on the main valve body; it contains the 1st accumulator and the manual valve.

Scheme 44

Distribution of Hydraulic Pressure

As the engine turns, the ATF pump starts to operate. Automatic transmission fluid (ATF) is drawn through the ATF strainer (filter) and discharged into the hydraulic circuit. Then, ATF flowing from the ATF pump becomes line pressure that is regulated by the main regulator valve. Torque converter pressure from the main regulator valve is regulated by the torque converter regulator valve and then flows to the torque converter. The torque converter regulator valve prevents torque converter pressure from rising. Line pressure also becomes torque converter clutch pressure that is regulated by the lock-up control valve, and flows to the torque converter clutch. The PCM switches shift solenoid valves ON and OFF, and it controls the shift solenoid pressure to the shift valves. Applying shift solenoid pressure to the shift valves moves the position of the shift valve, and switches the port of hydraulic pressure. The PCM also controls A/T clutch pressure control solenoid valves A, B, C, and D. The A/T clutch pressure control solenoid valves regulate hydraulic pressure, and applies the pressure to the clutch. When shifting between gears, the clutches are engaged by the A/T clutch pressure control solenoid valve pressures. The PCM actuates the shift solenoid valves to move the position of the shift valves. This movement switches the fluid flow to each clutch. Shifting is completed after the clutch is engaged by the A/T clutch pressure control solenoid valve pressures.

HYDRAULIC PRESSURE AT PORT FOR USE IN HYDRAULIC CIRCUIT

Shifting to N from R

Line pressure (1) regulated by the main regulator valve flows to the shift solenoid valves. The PCM switches the shift solenoid valves ON and OFF. The conditions of the shift solenoid valves and the positions of the shift valves are as follows

1. Shift solenoid valve A is ON, and opens shift solenoid valve A pressure port (SA); shift valve A is moved to the right side by hydraulic pressure (SA) from shift solenoid valve A.
2. When shifting to N from R, shift solenoid valve B is OFF, and closes shift solenoid valve B pressure port (SB); shift valve B remains on the left side under a spring force, and shift valve C is moved to the left side by hydraulic pressure (4B) that is applied from shift valve A through shift valve B.
3. When shifting to N from R, shift solenoid valve C is ON, and opens shift solenoid valve C pressure port (SC); the reverse inhibitor valve is moved to the left side by hydraulic pressure (SC) from shift solenoid valve C.
4. The manual valve covers the ports leading pressure to the clutches in N, and hydraulic pressure is not applied to the clutches.

Note. When used, "left" or "right" indicates direction on the hydraulic circuit.

Scheme 45

Shifting to N from D

Line pressure (1) regulated by the main regulator valve flows to the shift solenoid valves. The PCM switches the shift solenoid valves ON and OFF. The conditions of the shift solenoid valves and the positions of the shift valves areas follows

1. Shift solenoid valve A is ON, and opens shift solenoid valve A pressure port (SA); shift valve A is moved to the right side by hydraulic pressure (SA) from shift solenoid valve A.
2. When shifting to N from D, shift solenoid valve B is ON, and opens shift solenoid valve B pressure port (SB); shift valve B is moved to the right side by hydraulic pressure (SB) from shift solenoid valve B, and shift valve C is moved to the right side by a spring force.
3. When shifting to N from D, shift solenoid valve C is OFF, and closes shift solenoid valve C pressure port (SC); the reverse inhibitor valve is moved to the right side by a spring force.
4. The manual valve covers the ports leading pressure to the clutches in N, and hydraulic pressure is not applied to the clutches.

Note. When used, "left" or "right" indicates direction on the hydraulic circuit.

Scheme 46

Shifting to D and S from N

When shifting to D or S from N, the condition of shift solenoid valves A and B remain the same as in N, and the manual valve moves to the D position. Line pressure (4) from the manual valve is applied to the shift valve C line pressure port (4) and the A/T clutch pressure control solenoid valves A pressure port (4) and B pressure port (4). As shift solenoid valve A is ON and shift solenoid valve B is OFF, the line pressure (4A) from shift valve A applies to the shift valve C pressure port (4B) through shift valve B (4A, 4B). Shift valve C remains on the left side by the hydraulic pressure (4B) from shift valve B. Immediately after moving the shift lever to D or S from N, A/T clutch pressure control solenoid valve D operates to apply A/T clutch pressure control solenoid valve D pressure (58) to the 1st clutch through lock-up shift valve pressure ports (58, 58'), shift valve C pressure ports (58', 3B), manual valve pressure ports (3B, 5A), and shift valve C pressure ports (5A, 10). A/T clutch pressure control solenoid valve D gently applies hydraulic pressure to the 1st clutch, which avoids generating shock while in gear.

Note. When used, "left" or "right" indicates direction on the hydraulic circuit.

Scheme 47

Driving in 1st Gear

The PCM turns shift solenoid valves A and BON in 1st gear. Shift solenoid valve B is turned ON from OFF to apply the shift solenoid valve B pressure (SB) to shift valve B. Shift valve B is moved to the right side by the shift solenoid valve B pressure (SB) to close the line pressure port (4B) leading to shift valve C. As the line pressure (4B) from shift valve B is not applied to shift valve C, shift valve C is moved to the right side by a spring force to connect the line pressure port (4) on shift valve C and the 1st clutch pressure port (10). With this shift valve C movement, the line pressure (4) from the manual valve becomes 1st clutch pressure (10) at shift valve C, and flows to the 1st clutch. Then the 1st clutch is engaged by 1st clutch pressure (10).

Note. When used, "left" or "right" indicates direction on the hydraulic circuit.

Scheme 48

Driving in 2nd Gear

The condition of shift solenoid valves A and B in 2nd gear remain the same as in 1st gear, which turns shift solenoid valves A and B ON. As the speed of the vehicle reaches the programmed value, the PCM activates A/T clutch pressure control solenoid valve A, and applies CPC pressure (55) to shift valve A. Shift valve A remains on the right side as with the 1st gear. The CPC pressure (55) from A/T clutch pressure control solenoid valve A becomes 2nd clutch pressure (20) at shift valve A, and flows to the 2nd clutch. Then the 2nd clutch is engaged by 2nd clutch pressure (20). The 1st clutch is also engaged, but since the rotation speed of the countershaft exceeds that of 1st gear, no power is transmitted because the one-way clutch causes 1st gear to free-wheel.

Note. When used, "left" or "right" indicates direction on the hydraulic circuit.

Scheme 49

Driving in 3rd Gear

The PCM turns shift solenoid valve A OFF and shift solenoid valve BON in 3rd gear. As the speed of the vehicle reaches the programmed value, the PCM activates A/T clutch pressure control solenoid valve B, and applies CPC pressure (56) to the shift valve B pressure port (56). Shift valve B remains on the right side as with the 1st gear. The CPC pressure (56) from A/T clutch pressure control solenoid valve B becomes 3rd clutch pressure (30) at shift valve B, and flows to the 3rd clutch. Then the 3rd clutch is engaged by 3rd clutch pressure (30). 1st clutch is also engaged, but since the rotation speed of the countershaft exceeds that of 1st gear, no power is transmitted because the one-way clutch causes 1st gear to free-wheel.

Note. When used, "left" or "right" indicates direction on the hydraulic circuit.

Scheme 50

Driving in 4th Gear

The PCM turns shift solenoid valves A OFF and shift solenoid valve B ON and OFF (depending on the shift map) in 4th gear. As the speed of the vehicle reaches the programmed value, the PCM activates A/T clutch pressure control solenoid valve C, and applies CPC pressure (57) to the shift valve C pressure port (57). As the line pressure (4B) from shift valve B is not applied to shift valve C, shift valve C is moved to the right side by a spring force to connect the CPC pressure port (57) on shift valve C and the line pressure port (5B) leading to the reverse inhibitor valve. Since reverse inhibitor valve also remains on the right side under a line pressure (4), it connects the CPC pressure port (5B) from shift valve C on the reverse inhibitor valve to the pressure port (40) leading to the 4th clutch. With this shift valve C and the reverse inhibitor valve operations, the CPC pressure (57) flows from the reverse inhibitor valve pressure port (5B, 40) to the 4th clutch through shift valve C pressure ports (57, 5B). Then the 4th clutch is engaged by 4th clutch pressure (40). 1st clutch is also engaged, but since the rotation speed of the countershaft exceeds that of 1st gear, no power is transmitted because the one-way clutch causes 1st gear to free-wheel.

Note. When used, "left" or "right" indicates direction on the hydraulic circuit.

Scheme 51

Driving in 5th Gear

The condition of shift solenoid valves A and B in 5th gear remains the same as in 4th gear, which turns shift solenoid valve A OFF and shift solenoid valve B ON and OFF (depending on the shift map). As the speed of the vehicle reaches the programmed value, the PCM activates A/T clutch pressure control solenoid valve A, and applies CPC pressure (55) to the shift valve A pressure port (55). As shift solenoid valve A remains OFF, shift valve A is moved to the left side by a spring force, to connect the CPC pressure port (55) on shift valve A and the 5th clutch pressure port (50). With this shift valve A movement, the CPC pressure (55) becomes 5th clutch pressure (50) at shift valve A, and flows to the 5th clutch. Then the 5th clutch is engaged by 5th clutch pressure (50). 1st clutch is also engaged, but since the rotation speed of the countershaft exceeds that of 1st gear, no power is transmitted because the one-way clutch causes 1st gear to free-wheel.

Note. When used, "left" or "right" indicates direction on the hydraulic circuit.

Scheme 52

Driving in 6th Gear

The PCM turns shift solenoid valves A and B OFF in 6th gear. As the speed of the vehicle reaches the programmed value, the PCM activates A/T clutch pressure control solenoid valve B, and applies CPC pressure (56) to the shift valve B pressure port (56). As shift solenoid valve B remains OFF, shift valve B is moved to the left side by a spring force, to connect the CPC pressure port (56) on shift valve B and the 6th clutch pressure port (60). With this shift valve B movement, the CPC pressure (56) becomes 6th clutch pressure (60) at shift valve B, and flows to the 6th clutch. Then the 6th clutch is engaged by 6th clutch pressure (60). 1st clutch is also engaged, but since the rotation speed of the countershaft exceeds that of 1st gear, no power is transmitted because the one-way clutch causes 1st gear to free-wheel.

Note. When used, "left" or "right" indicates direction on the hydraulic circuit.

Scheme 53

Shifting to R from N

The vehicle is moved backward by engaging the 4th clutch. When shifting to R from N, shift solenoid valve A turns ON, shift solenoid valve B turns OFF, and shift solenoid valve C turns ON, and the manual valve moves to the R position. Line pressure (3) from the manual valve is applied to the shift valve C line pressure port (3) and the reverse inhibitor valve line pressure port (3). Reverse inhibitor valve is moved to the left side by the shift solenoid valve C pressure (SC) to connect the line pressure port (3C) from the shift fork shaft on the reverse inhibitor valve and the 4th clutch pressure port (40) leading to the 4th clutch. As the line pressure (1, 4A) flows from shift valve A to the shift valve C line pressure port (4B) through shift valve B (4A, 4B), shift valve C is moved to the left side. Immediately after moving the shift lever to R from N, A/T clutch pressure control solenoid valve D operates to apply the A/T clutch pressure control solenoid valve D pressure (58) to the 4th clutch through lock-up shift valve pressure ports (58, 58'), shift valve C pressure ports (58', 3B), manual valve pressure ports (3B, 3A), shift fork shaft pressure ports (3A, 3C), and reverse inhibitor valve pressure ports (3C, 40). Then, A/T clutch pressure control solenoid valve D gently applies hydraulic pressure to the 4th clutch, which avoids generating shock while in gear.

Note. When used, "left" or "right" indicates direction on the hydraulic circuit.

Scheme 54

Driving in R

The vehicle is moved backward by engaging the 4th clutch and reversing the mainshaft rotation with the reverse idler gear. Shift solenoid valves A and B remain OFF, and shift solenoid valve C turns ON when the vehicle moving backward. As shift solenoid valves A and B remain OFF, shift valve C is moved to the right side by a spring force to connect the line pressure port (3) on shift valve C and the line pressure port (3B) leading to the reverse inhibitor valve. The reverse inhibitor valve is moved to the left side by the shift solenoid valve C pressure (SC) to connect the line pressure port (3C) from the shift fork shaft on the reverse inhibitor valve and the 4th clutch pressure port (40) leading to the 4th clutch. The line pressure (3) from the manual valve is also applied to the shift fork shaft line pressure port (3') through the reverse inhibitor valve line pressure ports (3, 3'), which moves the shift fork shaft to the right side, and connects the port (3A)from the manual valve on the shift fork shaft to the line pressure port (3C) leading to the reverse inhibitor valve. With this shift valve C, reverse inhibitor valve, and shift fork shaft movement, the line pressure (3C) becomes 4th clutch pressure (40) at the reverse inhibitor valve, and flows to the 4th clutch. Then the 4th clutch is engaged by 4th clutch pressure (40).

Reverse Inhibitor Control

When R is selected while the vehicle is moving forward at speeds over 6 mph (10 km/h), the PCM commands shift solenoid valve C to remain OFF so that shift solenoid valve C pressure (SC) is not applied to the reverse inhibitor valve. Line pressure (3) stops at the reverse inhibitor valve, and is not applied to the shift fork shaft. This control does not switch to the hydraulic circuit leading to reverse while the vehicle is moving forward at speeds over 6 mph (10 km/h).

Note. When used, "left" or "right" indicates direction on the hydraulic circuit.

Scheme 55

Lock-Up System

The lock-up mechanism operates in D (during accelerating: 1st, 2nd, 3rd, 4th, 5th, and 6th gears/during decelerating: 2nd, 3rd, 4th, 5th, and 6th gears), S with automatic shift mode (during accelerating: 1st, 2nd, 3rd, 4th, and 5th gears/during decelerating: 2nd, 3rd, 4th, and 5th gears), and S with sequential sportshift mode (during accelerating: 1st, 2nd, 3rd, 4th, 5th, and 6th gears /during decelerating: 2nd, 3rd, 4th, 5th, and 6th gears). The pressurized fluid is supplied through a lock-up fluid passage in the torque converter, causing the torque converter clutch in the torque converter to be engaged. As this takes place, the mainshaft rotates at the same speed as the engine crankshaft. The PCM controls the shift solenoid valve C pressure and A/T clutch pressure control solenoid valve D pressure to optimize the lock-up timing and the amount of the lock-up. The shift solenoid C pressure operates the lock-up shift valve to switch the lock-up ON and OFF. The A/T clutch pressure control solenoid valve D pressure operates the lock-up control valve to control the degree of lock-up.

Torque Converter Clutch Lock-Up ON (Engaging Torque Converter Clutch)

The fluid pressure is applied to the lock-up fluid passage (94) in the torque converter, causing the torque converter clutch in the torque converter to be engaged and then the turbine and the torque converter cover to be engaged. The mainshaft rotates at the same speed as the engine crankshaft when the torque converter clutch in the torque converter is engaged.

Scheme 56

Torque Converter Clutch Lock-Up OFF (Disengaging Torque Converter Clutch)

When the fluid pressure to the lock-up fluid passage (94) in the torque converter is blocked, the torque converter clutch in the torque converter is released. The turbine and the torque converter cover are also released at this time, causing the mainshaft and the engine crankshaft to rotate at a different speed.

Scheme 57

Shift Lock System

The shift lock system prevents the shift lever from moving unless certain conditions are met. The shift lock solenoid is normally OFF. After starting the engine in P, the shift lever cannot move to any other position because the shift lock stop stops the lock pin. When the brake pedal is pressed and the accelerator pedal is not pressed, the PCM commands the shift lock solenoid is ON; the shift lock solenoid plunger pulls the shift lock stop to release the lock pin. Pressing the shift lever button allows the shift lever to move to any other position. When the brake pedal and the accelerator pedal are pressed at the same time, the PCM commands the solenoid OFF and the shift lock system is locked.

Scheme 58

When the shift lock system does not operate due to mechanical or electrical problem, you can unlock the shift lock temporarily by inserting the ignition key into the shift lock release hole and pressing the shift lock release. When the shift lock release is pressed, the shift lock stop releases the lock pin, and the shift lever can move to any other position.

Scheme 59

Scheme 60

Scheme 61

DTC P062F: Powertrain Control Module (PCM) Internal Control Module Keep Alive Memory (KAM) Error

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ).

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Check for Pending or Confirmed DTCs in the PGM-FI SYSTEM with the HDS. Is DTC P062F indicated in the PGM-FI SYSTEM? YES -Go to the DTC P062F troubleshooting in the PGM-FI SYSTEM (see «DTC P062F: PCM INTERNAL CONTROL MODULE KEEP ALIVE MEMORY (KAM) ERROR»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__dtc-p062f-pcm-internal-control-module) ). NO -Go to step 4.
4. Check for Pending or Confirmed DTCs in the A/T SYSTEM with the HDS. Is DTC P062F indicated in the A/T SYSTEM? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. If any other Pending or Confirmed DTCs were indicated, go to the indicated «DTC'S TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) .
5. Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ).
6. Start the engine, and wait for at least 1 minute.
7. Check for Pending or Confirmed DTCs in the A/T SYSTEM with the HDS. Is DTC P062F indicated in the A/T SYSTEM? YES -Check for poor connections or loose terminals at the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ), then go to step 6 . If the PCM was substituted, go to step 2 . NO -Go to step 8.
8. Monitor the OBD STATUS for P062F in the DTCs MENU with the HDS. Does the HDS indicate PASSED? YES -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). If any other Pending or Confirmed DTCs were indicated in step 7 , go to the indicated «DTC'S TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) . NO -If the HDS indicates FAILED, check for poor connections or loose terminals at the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ), then go to step 6 . If the PCM was substituted, go to step 2 . If the HDS indicates NOT COMPLETED, go to step 6 .

DTC P0705: Short in Transmission Range Switch Circuit (Multiple Shift-Position Input)

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Compare the ATPP, ATPR, ATPN, ATPD, ATPS, ATPFWD, and ATPRVS inputs with the HDS to the following table, in each shift lever position. ATPP ATPR ATPN ATPD ATPS ATP FWD ATP RVS P o X X X X X X R X o X X X X o N X X o X X X X D X X X o X o X S X X X X o o X o: ON X: OFF Do the transmission range switch signals match? YES -Intermittent failure, the system is OK at this time. NO -Go to step 3.
3. Compare the ATPP, ATPR, ATPN, ATPD, ATPS, ATPFWD, and ATPRVS inputs with the HDS to the table in step 2 , in each shift lever position. Are any transmission range switch signals ON in all shift lever positions? YES -Go to step 9 . NO -Record the input that did not indicate ON, then go to step 4.
4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
5. Disconnect the transmission range switch connector.
6. Connect the transmission range switch connector terminal which incorrectly indicates ON in step 3 to body ground with a jumper wire.
7. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
8. Compare the ATPP, ATPR, ATPN, ATPD, ATPS, ATPFWD, and ATPRVS inputs with the HDS to the table in step 2 . Do multiple transmission range switch signals indicate ON? YES -Repair a short in the wires between the transmission range switch and the PCM, refer to the following table. NO -Replace the transmission range switch (see «TRANSMISSION RANGE SWITCH REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ). ATP P ATP R ATP N ATP D ATP S ATP FWD ATP RVS PCM A16 C25 C26 C17 C46 C18 C19 Transmission Range Switch 7 8 4 9 10 5 1
9. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
10. Disconnect the transmission range switch connector.
11. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
12. Check the transmission range switch signal that remained ON with the HDS. Do any transmission range switch signals remain ON? YES -Go to step 13. NO -Replace the transmission range switch (see «TRANSMISSION RANGE SWITCH REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
13. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
14. Check for continuity to body ground in the circuit that remained ON in step 2 . Does the circuit that indicated ON have continuity to ground? YES -Repair a short to body ground in the wire between the corresponding transmission range switch connector terminal and the PCM. NO -Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-update) ). If the PCM was updated, replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ).

DTC P0706: Open in Transmission Range Switch Circuit

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

Scheme 62

1. Make sure the shift cable is adjusted properly (see «SHIFT CABLE ADJUSTMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
3. Compare the ATPP, ATPR, ATPN, ATPD, ATPS, ATPFWD, and ATPRVS inputs with the HDS to the following table, in each shift lever position. ATPP ATPR ATPN ATPD ATPS ATP FWD ATP RVS P o X X X X X X R X o X X X X o N X X o X X X X D X X X o X o X S X X X X o o X o: ON X: OFF Do the transmission range switch signals match? YES -Intermittent failure, the system is OK at this time. NO -Go to step 4.
4. Compare the ATPP, ATPR, ATPN, ATPD, ATPS, ATPFWD, and ATPRVS inputs with the HDS to the table in step 3 , in each shift lever position. Do all signals remain OFF? YES -Go to step 14 . NO -Record the input that did not indicate ON, then go to step 5.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Disconnect the transmission range switch connector.
7. Connect the transmission range switch connector terminal which did not indicate ON in step 4 to body ground with a jumper wire.
8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
9. Check the transmission range switch signal that did not indicate ON with the HDS. Does the transmission range switch signal indicate ON? YES -Replace the transmission range switch (see «TRANSMISSION RANGE SWITCH REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ). NO -Go to step 10.
10. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
11. Jump the SCS line with the HDS.
12. Disconnect PCM connector A (49P) or C (49P).
13. Check for continuity between the transmission range switch connector terminal and the PCM connector terminal of the input which indicated OFF. Refer to the following table. ATP P ATP R ATP N ATP D ATP S ATP FWD ATP RVS PCM A16 C25 C26 C17 C46 C18 C19 Transmission Range Switch 7 8 4 9 10 5 1 Is there continuity? YES -Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-update) ). If the PCM was updated, replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). NO -Repair an open in the wire between the corresponding transmission range switch connector terminal and the PCM.
14. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
15. Disconnect the transmission range switch connector.
16. Check for continuity between transmission range switch connector terminal No. 6 and body ground. Is there continuity? YES -Replace the transmission range switch (see «TRANSMISSION RANGE SWITCH REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ). NO -Repair an open in the wire between transmission range switch connector terminal No. 6 and body ground (G101) (see «CONNECTOR TO FUSE/RELAY BOX INDEX»(/acura/zdx/i-2009-2013/remont/body-electrical/#fuserelay-boxes__connector-to-fuserelay-box-index) ), or repair poor body ground (G101).

DTC P0711: Problem in ATF Temperature Sensor Circuit

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Check the ATF Temperature with the HDS in the A/T Data List. Does the ATF Temperature indicate -4°F (-20°C) or below? YES -Go to step 3. NO -Go to step 5 .
3. Start the engine, and warm it up to normal operating temperature (the radiator fan comes on).
4. Check the ATF Temperature with the HDS in the A/T Data List. Does the ATF Temperature remain -4°F (-20°C) or below? YES -Replace the ATF temperature sensor (see «ATF TEMPERATURE SENSOR REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ), then go to step 8 . NO -Intermittent failure, the system is OK at this time. If there is an abnormal temperature rise in the ATF temperature sensor, go to step 16 .
5. Check the ATF Temperature with the HDS in the A/T Data List. Does the ATF Temperature exceed 230°F (110°C)? YES -Go to step 6. NO -Intermittent failure, the system is OK at this time.
6. Let the engine cool until the Engine Coolant Temperature reads 122°F (50°C) or below with the HDS in the A/T Data List.
7. Check the ATF Temperature with the HDS in the A/T Data List. Does the ATF Temperature remain 230°F (110°C) or higher? YES -Replace the ATF temperature sensor (see «ATF TEMPERATURE SENSOR REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ), then go to step 8. NO -Intermittent failure, the system is OK at this time. If there is an abnormal decrease in temperature of the ATF temperature sensor, go to step 16 .
8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
9. Clear the DTC with the HDS.
10. Start the engine, and warm it up to normal operating temperature (the radiator fan comes on).
11. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode, and allow the engine coolant to cool down to outside air temperature.
12. Raise the vehicle on a lift, make sure it is securely supported, and allow the all four wheels to rotate freely.
13. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, and wait for 20 seconds, then start the engine. Warm the engine up to normal operating temperature (the radiator fan comes on). Start off in D, accelerate with the throttle opened at least 4 degrees, and run the vehicle at speeds over 19 mph (30 km/h) for at least 5 minutes. Or test-drive the vehicle for at least 20 seconds while the ATF temperature reads -4°F to 230°F (-20°C to 110°C) by monitoring with the HDS. Slowdown, and stop the wheels.
14. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0711 indicated? YES -Check for poor connections or loose terminals between the ATF temperature sensor and the PCM, then go to step 1 . NO -Go to step 15.
15. Monitor the OBD STATUS for P0711 in the DTCs MENU with the HDS. Does the HDS indicate PASSED? YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 14 , go to the indicated «DTC'S TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) . NO -If the HDS indicates FAILED, check for poor connections and loose terminals between the ATF temperature sensor and the PCM, then go to step 1 . If the HDS indicates NOT COMPLETED, go to step 10 .
16. Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ).
17. Start the engine, and warm it up to normal operating temperature (the radiator fan comes on).
18. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode, and allow the engine coolant to cool down to outside air temperature.
19. Raise the vehicle on a lift, make sure it is securely supported, and allow the all four wheels to rotate freely.
20. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, and wait for 20 seconds, then start the engine. Warm the engine up to normal operating temperature (the radiator fan comes on). Start off in D, accelerate with the throttle opened at least 4 degrees, and run the vehicle at speeds over 19 mph (30 km/h) for at least 5 minutes. Or test-drive the vehicle for at least 20 seconds while the ATF temperature reads -4°F to 230°F (-20°C to 110°C) by monitoring with the HDS. Slow down, and stop the wheels.
21. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0711 indicated? YES -Check for poor connections or loose terminals between the ATF temperature sensor and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ), then go to step 17 . If the PCM was substituted, go to step 1 . NO -Go to step 22.
22. Monitor the OBD STATUS for P0711 in the DTCs MENU with the HDS. Does the HDS indicate PASSED? YES -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). If any other Pending or Confirmed DTCs were indicated in step 21 , go to the indicated «DTC'S TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) . NO -If the HDS indicates FAILED, check for poor connections or loose terminals between the ATF temperature sensor and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ), then go to step 17 . If the PCM was substituted, go to step 1 . If the HDS indicates NOT COMPLETED, go to step 17 .

DTC P0712: Short in ATF Temperature Sensor Circuit

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

Scheme 63

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Check the ATF Temp Sensor (V) with the HDS in the A/T Data List. Is the ATF Temp Sensor (V) 0.07 V or less? YES -Go to step 3. NO -Intermittent failure, the system is OK at this time. Check for an intermittent short to body ground in the wire between the ATF temperature sensor and the PCM.
3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
4. Disconnect the ATF temperature sensor connector.
5. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
6. Check the ATF Temp Sensor (V) with the HDS in the A/T Data List. Is the ATF Temp Sensor (V) 0.07 V or less? YES -Go to step 7. NO -Replace the ATF temperature sensor (see «ATF TEMPERATURE SENSOR REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ), then go to step 11 .
7. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
8. Jump the SCS line with the HDS.
9. Disconnect PCM connector C (49P).
10. Check for continuity between ATF temperature sensor connector terminal No. 2 and body ground. Is there continuity? YES -Repair a short to body ground in the wire between PCM connector terminal C33 and ATF temperature sensor connector terminal No. 2, then go to step 11. NO -Go to step 17 .
11. Reconnect all connectors.
12. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
13. Clear the DTC with the HDS.
14. Start the engine in P, and wait for at least 20 seconds.
15. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0712 indicated? YES -Check for an intermittent short to body ground in the wire between the ATF temperature sensor and the PCM, then go to step 1 . NO -Go to step 16.
16. Monitor the OBD STATUS for P0712 in the DTCs MENU with the HDS. Does the HDS indicate PASSED? YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 15 , go to the indicated «DTC'S TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) . NO -If the HDS indicates FAILED, check for an intermittent short to body ground in the wire between the ATF temperature sensor and the PCM, then go to step 1 . If the HDS indicates NOT COMPLETED, go to step 14 .
17. Reconnect all connectors.
18. Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ).
19. Start the engine in P, and wait for at least 20 seconds.
20. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0712 indicated? YES -Check for an intermittent short to body ground in the wire between the ATF temperature sensor and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ), then go to step 19 . If the PCM was substituted, go to step 1 . NO -Go to step 21.
21. Monitor the OBD STATUS for P0712 in the DTCs MENU with the HDS. Does the HDS indicate PASSED? YES -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). If any other Pending or Confirmed DTCs were indicated in step 20 , go to the indicated «DTC'S TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) . NO -If the HDS indicates FAILED, check for an intermittent short to body ground in the wire between the ATF temperature sensor and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ), then go to step 19 . If the PCM was substituted, go to step 1 . If the HDS indicates NOT COMPLETED, go to step 19 .

DTC P0713: Open in ATF Temperature Sensor Circuit

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

Scheme 64

Scheme 65

Scheme 66

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Check the ATF Temp Sensor (V) with the HDS in the A/T Data List. Does the ATF Temp Sensor (V) exceed 4.93 V? YES -Go to step 3. NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals between the ATF temperature sensor and the PCM.
3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
4. Disconnect the ATF temperature sensor connector.
5. Connect ATF temperature sensor connector terminal No. 2 to body ground with a jumper wire.
6. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
7. Check the ATF Temp Sensor (V) with the HDS in the A/T Data List. Does the ATF Temp Sensor (V) drop to 0.07 V or less? YES -Go to step 8. NO -Go to step 13 .
8. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
9. Remove the jumper wire.
10. Connect ATF temperature sensor connector terminals No. 1 and No. 2 with a jumper wire.
11. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
12. Check the ATF Temp Sensor (V) with the HDS in the A/T Data List. Does the ATF Temp Sensor (V) remain 0.07 V or less? YES -Replace the ATF temperature sensor (see «ATF TEMPERATURE SENSOR REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ), then go to step 17 . NO -Repair an open in the wire between PCM connector terminal C16 and ATF temperature sensor connector terminal No. 1, then go to step 17 .
13. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
14. Jump the SCS line with the HDS.
15. Disconnect PCM connector C (49P).
16. Check for continuity between PCM connector terminal C33 and ATF temperature sensor connector terminal No. 2. Is there continuity? YES -Check for poor connections or loose terminals between the ATF temperature sensor and the PCM. If the connections are OK, go to step 23 . NO -Repair an open in the wire between PCM connector terminal C33 and ATF temperature sensor connector terminal No. 2, then go to step 17.
17. Reconnect all connectors.
18. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
19. Clear the DTC with the HDS.
20. Start the engine in P, and wait for at least 20 seconds.
21. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0713 indicated? YES -Check for poor connections or loose terminals between the ATF temperature sensor and the PCM, then go to step 1 . NO -Go to step 22.
22. Monitor the OBD STATUS for P0713 in the DTCs MENU with the HDS. Does the HDS indicate PASSED? YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 21 , go to the indicated «DTC'S TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) . NO -If the HDS indicates FAILED, check for poor connections or loose terminals between the ATF temperature sensor and the PCM, then go to step 1 . If the HDS indicates NOT COMPLETED, go to step 20 .
23. Reconnect all connectors.
24. Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ).
25. Start the engine in P, and wait for at least 20 seconds.
26. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0713 indicated? YES -Check for poor connections or loose terminals between the ATF temperature sensor and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ), then go to step 25 . If the PCM was substituted, go to step 1 . NO -Go to step 27.
27. Monitor the OBD STATUS for P0713 in the DTCs MENU with the HDS. Does the HDS indicate PASSED? YES -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). If any other Pending or Confirmed DTCs were indicated in step 26 , go to the indicated «DTC'S TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) . NO -If the HDS indicates FAILED, check for poor connections or loose terminals between the ATF temperature sensor and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ) then go to step 25 . If the PCM was substituted, go to step 1 . If the HDS indicates NOT COMPLETED, go to step 25 .

DTC P0716: Problem in Input Shaft (Mainshaft) Speed Sensor Circuit; DTC P0721: Problem in Output Shaft (Countershaft) Speed Sensor Circuit

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Raise the vehicle on a lift, make sure it is securely supported, and allow the all four wheels to rotate freely.
4. Start the engine, disable the VSA by pressing the VSA OFF button, move the shift lever to D, and run the vehicle with the engine speed above 2, 000 rpm for at least 10 seconds. Slow down, and stop the wheels.
5. Check for pending or Confirmed DTCs with the HDS. Is DTC P0718 or P0723 indicate? YES -Go to the «DTC P0718 TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__dtc-p0717-problem-in-input-shaft) or the «DTC P0723 TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__dtc-p0722-problem-in-output-shaft) . NO -Go to step 6.
6. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0716 or P0721 indicated? YES -Go to step 7. NO -Intermittent failure, the system is OK at this time.
7. Check the input shaft (mainshaft) speed sensor or the output shaft (countershaft) speed sensor for poor connection and proper installation. Are the connection and installation OK? YES -Replace the input shaft (mainshaft) speed sensor or the output shaft (countershaft) speed sensor, then go to step 8. NO -Reinstall the speed sensor and connect the speed sensor connector, then go to step 8.
8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
9. Clear the DTC with HDS.
10. Start the engine, disable the VSA by pressing the VSA OFF button, move the shift lever to D, and run the vehicle with the engine speed above 2, 000 rpm for at least 10 seconds. Slow down, and stop the wheels.
11. Check for Pending or Confirmed DTCs with the HDS. Is DT C P0716 or P0721 indicated? YES -Go to step 1 . NO -Troubleshooting is complete.

DTC P0717: Problem in Input Shaft (Mainshaft) Speed Sensor Circuit (No Signal Input); DTC P0718: Input Shaft (Mainshaft) Speed Sensor Intermittent Failure

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

Scheme 67

Scheme 68

Scheme 69

Scheme 70

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Raise the vehicle on a lift, make sure it is securely supported, and allow the all four wheels to rotate freely.
4. Start the engine, disable the VSA by pressing the VSA OFF button, move the shift lever to D, and run the vehicle with the engine speed above 2, 000 rpm. Compare the Input Shaft (Mainshaft) Speed and the Output Shaft (Countershaft) Speed with the HDS in the A/T Data List. Slow down, and stop the wheels. Are the speeds about the same? YES -Intermittent failure, the system is OK at this time. NO -Go to step 5.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Disconnect the input shaft (mainshaft) speed sensor connector.
7. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
8. Measure the voltage between input shaft (mainshaft) speed sensor connector terminal No. 1 and body ground. Is there about 5 V? YES -Go to step 9. NO -Repair an open in the wire between PCM connector terminal C12 and input shaft (mainshaft) speed sensor connector terminal No. 1, then go to step 15 .
9. Measure the voltage between input shaft (mainshaft) speed sensor connector terminal No. 2 and body ground. Is there about 5 V? YES -Go to step 10. NO -Go to step 11 .
10. Check for continuity between input shaft (mainshaft) speed sensor connector terminal No. 3 and body ground. Is there continuity? YES -Replace the input shaft (mainshaft) speed sensor (see «INPUT SHAFT (MAINSHAFT) SPEED SENSOR REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ), then go to step 15 . NO -Repair an open in the wire between input shaft (mainshaft) speed sensor connector terminal No. 3 and PCM connector terminal C16, then go to step 15 .
11. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
12. Jump the SCS line with the HDS.
13. Disconnect PCM connector B (49P).
14. Check for continuity between input shaft (mainshaft) speed sensor connector terminal No. 2 and body ground. Is there continuity? YES -Repair a short to body ground in the wire between PCM connector terminal B37 and input shaft (mainshaft) speed sensor connector terminal No. 2, then go to step 15. NO -Repair an open in the wire between PCM connector terminal B37 and input shaft (mainshaft) speed sensor connector terminal No. 2, then go to step 15.
15. Reconnect all connectors.
16. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
17. Clear the DTC with the HDS.
18. Start the engine, disable the VSA by pressing the VSA OFF button, move the shift lever to D, and run the vehicle with the engine speed above 2, 000 rpm. Compare the Input Shaft (Mainshaft) Speed and the Output Shaft (Countershaft) Speed with the HDS in the A/T Data List. Slow down, and stop the wheels. Are the speeds about the same? YES -Troubleshooting is complete. NO -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ).

DTC P0722: Problem in Output Shaft (Countershaft) Speed Sensor Circuit (No Signal Input); DTC P0723: Output Shaft (Countershaft) Speed Sensor Intermittent Failure

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

Scheme 71

Scheme 72

Scheme 73

Scheme 74

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Raise the vehicle on a lift, make sure it is securely supported, and allow the all four wheels to rotate freely.
4. Start the engine, disable the VSA by pressing the VSA OFF button, move the shift lever to D, and run the vehicle with the engine speed above 2, 000 rpm. Compare the Input Shaft (Mainshaft) Speed and the Output Shaft (Countershaft) Speed with the HDS in the A/T Data List. Slow down, and stop the wheels. Are the speeds about the same? YES -Intermittent failure, the system is OK at this time. NO -Go to step 5.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Disconnect the output shaft (countershaft) speed sensor connector.
7. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
8. Measure the voltage between output shaft (countershaft) speed sensor connector terminal No. 1 and body ground. Is there about 5 V? YES -Go to step 9. NO -Repair an open in the wire between PCM connector terminal B36 and output shaft (countershaft) speed sensor connector terminal No. 1, then go to step 15 .
9. Measure the voltage between output shaft (countershaft) speed sensor connector terminal No. 2 and body ground. Is there about 5 V? YES -Go to step 10. NO -Go to step 11 .
10. Check for continuity between output shaft (countershaft) speed sensor connector terminal No. 3 and body ground. Is there continuity? YES -Replace the output shaft (countershaft) speed sensor (see «OUTPUT SHAFT (COUNTERSHAFT) SPEED SENSOR REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ), then go to step 15 . NO -Repair an open in the wire between output shaft (countershaft) speed sensor connector terminal No. 3 and PCM connector terminal C15, then go to step 15 .
11. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
12. Jump the SCS line with the HDS.
13. Disconnect PCM connector B (49P).
14. Check for continuity between output shaft (countershaft) speed sensor connector terminal No. 2 and body ground. Is there continuity? YES -Repair a short to body ground in the wire between PCM connector terminal B38 and output shaft (countershaft) speed sensor connector terminal No. 2, then go to step 15. NO -Repair an open in the wire between PCM connector terminal B38 and output shaft (countershaft) speed sensor connector terminal No. 2, then go to step 15.
15. Reconnect all connectors.
16. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
17. Clear the DTC with the HDS.
18. Start the engine, disable the VSA by pressing the VSA OFF button, move the shift lever to D, and run the vehicle with the engine speed above 2, 000 rpm. Compare the Input Shaft (Mainshaft) Speed and the Output Shaft (Countershaft) Speed with the HDS in the A/T Data List. Slow down, and stop the wheels. Are the speeds about the same? YES -Troubleshooting is complete. NO -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ).

DTC P0729: Problem in 6th Clutch and 6th Clutch Hydraulic Circuit

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ).

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Test-drive the vehicle in 6th gear in D for at least 12 seconds. Slow down, and stop the wheels.
4. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0729 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. If any other Pending or Confirmed DTCs were indicated, go to the indicated «DTC'S TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) .
5. Measure the 6th clutch pressure (see «PRESSURE TEST»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__pressure-test) ). Is the 6th clutch pressure within the service limit? YES -Faulty 6th clutch. Replace the 3rd/6th clutch or the transmission. If you are replacing the 3rd/6th clutch, clean off any metal debris or excessive clutch material inside the transmission, the ATF cooler, the ATF hoses, the ATF pipes, and the hydraulic circuit. Then, replace the 3rd/6th clutch and the torque converter. NO -Go to step 6.
6. Measure the line pressure (see «PRESSURE TEST»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__pressure-test) ). Is the line pressure within the service limits? YES -Clogged 6th clutch hydraulic circuit. Clean the 6th clutch hydraulic circuit or replace the transmission. If you are cleaning the 6th clutch hydraulic circuit, clean off any metal debris or excessive clutch material inside the transmission, the ATF cooler, the ATF hoses, the ATF pipes, and the hydraulic circuit. Then, replace the torque converter. NO -Faulty ATF pump or main regulator valve. Replace the main valve body (ATF pump), the regulator valve body (main regulator valve), or the transmission. If you are replacing the main valve body or the regulator valve body, clean off any metal debris or excessive clutch material inside the transmission, the ATF cooler, the ATF hoses, the ATF pipes, and the hydraulic circuit. Then, replace the main valve body or the regulator valve body and the torque converter.

DTC P0731: Problem in 1st Clutch and 1st Clutch Hydraulic Circuit

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ).

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Test-drive the vehicle in 1st gear in D, at speeds over 7 mph (12 km/h), and for at least 12 seconds. Slow down, and stop the wheels.
4. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0731 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. If any other Pending or Confirmed DTCs were indicated, go to the indicated «DTC'S TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) .
5. Measure the 1st clutch pressure (see «PRESSURE TEST»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__pressure-test) ). Is the 1st clutch pressure within the service limit? YES -Faulty 1st clutch. Replace the 1st clutch or the transmission. If you are replacing the 1st clutch, clean off any metal debris or excessive clutch material inside the transmission, the ATF cooler, the ATF hoses, the ATF pipes, and the hydraulic circuit. Then, replace the 1st clutch and the torque converter. NO -Go to step 6.
6. Measure the line pressure (see «PRESSURE TEST»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__pressure-test) ). Is the line pressure within the service limits? YES -Clogged 1st clutch hydraulic circuit. Clean the 1st clutch hydraulic circuit or replace the transmission. If you are cleaning the 1st clutch hydraulic circuit, clean off any metal debris or excessive clutch material inside the transmission, the ATF cooler, the ATF hoses, the ATF pipes, and the hydraulic circuit. Then, replace the torque converter. NO -Faulty ATF pump or main regulator valve. Replace the main valve body (ATF pump), the regulator valve body (main regulator valve), or the transmission. If you are replacing the main valve body or the regulator valve body, clean off any metal debris or excessive clutch material inside the transmission, the ATF cooler, the ATF hoses, the ATF pipes, and the hydraulic circuit. Then, replace the main valve body or the regulator valve body and the torque converter.

DTC P0732: Problem in 2nd Clutch and 2nd Clutch Hydraulic Circuit

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ).

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Test-drive the vehicle in 2nd gear in D, at speeds over 7 mph (12 km/h), and for at least 12 seconds. Slow down, and stop the wheels.
4. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0732 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. If any other Pending or Confirmed DTCs were indicated, go to the indicated «DTC'S TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) .
5. Measure the 2nd clutch pressure (see «PRESSURE TEST»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__pressure-test) ). Is the 2nd clutch pressure within the service limit? YES -Faulty 2nd clutch. Replace the 2nd/5th clutch or the transmission. If you are replacing the 2nd/5th clutch, clean off any metal debris or excessive clutch material inside the transmission, the ATF cooler, the ATF hoses, the ATF pipes, and the hydraulic circuit. Then, replace the 2nd/5th clutch and the torque converter. NO -Go to step 6.
6. Measure the line pressure (see «PRESSURE TEST»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__pressure-test) ). Is the line pressure within the service limits? YES -Clogged 2nd clutch hydraulic circuit. Clean the 2nd clutch hydraulic circuit or replace the transmission. If you are cleaning the 2nd clutch hydraulic circuit, clean off any metal debris or excessive clutch material inside the transmission, the ATF cooler, the ATF hoses, the ATF pipes, and the hydraulic circuit. Then, replace the torque converter. NO -Faulty ATF pump or main regulator valve. Replace the main valve body (ATF pump), the regulator valve body (main regulator valve), or the transmission. If you are replacing the main valve body or the regulator valve body, clean off any metal debris or excessive clutch material inside the transmission, the ATF cooler, the ATF hoses, the ATF pipes, and the hydraulic circuit. Then, replace the main valve body or the regulator valve body and the torque converter.

DTC P0733: Problem in 3rd Clutch and 3rd Clutch Hydraulic Circuit

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ).

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Test-drive the vehicle in 3rd gear in D for at least 12 seconds. Slow down, and stop the wheels.
4. Check for Pending or Confined DTCs with the HDS. Is DTC P0733 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. If any other Pending or Confirmed DTCs were indicated, go to the indicated «DTC'S TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) .
5. Measure the 3rd clutch pressure (see «PRESSURE TEST»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__pressure-test) ). Is the 3rd clutch pressure within the service limit? YES -Faulty 3rd clutch. Replace the 3rd/6th clutch or the transmission. If you are replacing the 3rd/6th clutch, clean off any metal debris or excessive clutch material inside the transmission, the ATF cooler, the ATF hoses, the ATF pipes, and the hydraulic circuit. Then, replace the 3rd/6th clutch and the torque converter. NO -Go to step 6.
6. Measure the line pressure (see «PRESSURE TEST»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__pressure-test) ). Is the line pressure within the service limits? YES -Clogged 3rd clutch hydraulic circuit. Clean the 3rd clutch hydraulic circuit or replace the transmission. If you are cleaning the 3rd clutch hydraulic circuit, clean off any metal debris or excessive clutch material inside the transmission, the ATF cooler, the ATF hoses, the ATF pipes, and the hydraulic circuit. Then, replace the torque converter. NO -Faulty ATF pump or main regulator valve. Replace the main valve body (ATF pump), the regulator valve body (main regulator valve), or the transmission. If you are replacing the main valve body or the regulator valve body, clean off any metal debris or excessive clutch material inside the transmission, the ATF cooler, the ATF hoses, the ATF pipes, and the hydraulic circuit. Then, replace the main valve body or the regulator valve body and the torque converter.

DTC P0734: Problem in 4th Clutch and 4th Clutch Hydraulic Circuit

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ).

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Test-drive the vehicle in 4th gear in D for at least 12 seconds. Slow down, and stop the wheels.
4. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0734 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. If any other Pending or Confirmed DTCs were indicated, go to the indicated «DTC'S TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) .
5. Measure the 4th clutch pressure (see «PRESSURE TEST»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__pressure-test) ). Is the 4th clutch pressure within the service limit? YES -Faulty 4th clutch. Replace the 4th clutch or the transmission. If you are replacing the 4th clutch, clean off any metal debris or excessive clutch material inside the transmission, the ATF cooler, the ATF hoses, the ATF pipes, and the hydraulic circuit. Then, replace the 4th clutch and the torque converter. NO -Go to step 6.
6. Measure the line pressure (see «PRESSURE TEST»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__pressure-test) ). Is the line pressure within the service limits? YES -Clogged 4th clutch hydraulic circuit. Clean the 4th clutch hydraulic circuit or replace the transmission. If you are cleaning the 4th clutch hydraulic circuit, clean off any metal debris or excessive clutch material inside the transmission, the ATF cooler, the ATF hoses, the ATF pipes, and the hydraulic circuit. Then, replace the torque converter. NO -Faulty ATF pump or main regulator valve. Replace the main valve body (ATF pump), the regulator valve body (main regulator valve), or the transmission. If you are replacing the main valve body or the regulator valve body, clean off any metal debris or excessive clutch material inside the transmission, the ATF cooler, the ATF hoses, the ATF pipes, and the hydraulic circuit. Then, replace the main valve body or the regulator valve body and the torque converter.

DTC P0735: Problem in 5th Clutch and 5th Clutch Hydraulic Circuit

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ).

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Test-drive the vehicle in 5th gear in D for at least 12 seconds. Slow down, and stop the wheels.
4. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0735 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. If any other Pending or Confirmed DTCs were indicated, go to the indicated «DTC'S TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) .
5. Measure the 5th clutch pressure (see «PRESSURE TEST»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__pressure-test) ). Is the 5th clutch pressure within the service limit? YES -Faulty 5th clutch. Replace the 2nd/5th clutch or the transmission. If you are replacing the 2nd/5th clutch, clean off any metal debris or excessive clutch material inside the transmission, the ATF cooler, the ATF hoses, the ATF pipes, and the hydraulic circuit. Then, replace the 2nd/5th clutch and the torque converter. NO -Go to step 6.
6. Measure the line pressure (see «PRESSURE TEST»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__pressure-test) ). Is the line pressure within the service limits? YES -Clogged 5th clutch hydraulic circuit. Clean the 5th clutch hydraulic circuit or replace the transmission. If you are cleaning the 5th clutch hydraulic circuit, clean off any metal debris or excessive clutch material inside the transmission, the ATF cooler, the ATF hoses, the ATF pipes, and the hydraulic circuit. Then, replace the torque converter. NO -Faulty ATF pump or main regulator valve. Replace the main valve body (ATF pump), the regulator valve body (main regulator valve), or the transmission. If you are replacing the main valve body or the regulator valve body, clean off any metal debris or excessive clutch material inside the transmission, the ATF cooler, the ATF hoses, the ATF pipes, and the hydraulic circuit. Then, replace the main valve body or the regulator valve body and the torque converter.

DTC P0741: Torque Converter Clutch Hydraulic Circuit Stuck OFF

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ).

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0761 indicated? YES -Go to the «DTC P0761 TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__dtc-p0761-shift-solenoid-valve-c) . NO -Go to step 6 .
3. Warm up the engine to normal operating temperature (the radiator fan comes on).
4. Make sure that the transmission is filled to the proper level, and check for fluid leaks.
5. Drain the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ) through a strainer. Inspect the strainer for metal debris or excessive clutch material. Does the strainer have metal debris or excessive clutch material? YES -Replace the transmission. NO -Replace the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ), then go to step 6.
6. Warm up the engine to normal operating temperature (the radiator fan comes on).
7. Clear the DTC with the HDS.
8. Test-drive the vehicle on a level road with a steady throttle at 60 mph (96 km/h) for at least 22 seconds, or test-drive the vehicle for several minutes under the same conditions as those indicated by the freeze data.
9. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0741 indicated? YES -Go to step 10. NO -Intermittent failure, the system is OK at this time.
10. Select Clutch Pressure Control (Linear) Solenoid Valve D in the Miscellaneous Test Menu, and test A/T clutch pressure control solenoid valve D with the HDS. Does the HDS indicate NORMAL? YES -If the HDS indicates NORMAL, go to step 11. If the HDS indicates failure other than A/T clutch pressure control solenoid valve D, follow the instructions indicated on the HDS for the test result. NO -Faulty A/T clutch pressure control solenoid valve D. Replace the secondary valve body (A/T clutch pressure control solenoid valve D) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
11. Measure the torque converter clutch pressure (see «PRESSURE TEST»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__pressure-test) ) while monitoring the A/T Shift Sol VLV. C signal with the HDS. Dose the torque converter clutch pressure rise when A/T Shift Sol VLV. C turns on? YES -Faulty lock-up shift valve or lock-up control valve. Replace the main valve body (lock-up shift valve), the regulator valve body (lock-up control valve), or the transmission. If you are replacing the main valve body or the regulator valve body, clean off any metal debris or excessive clutch material inside the transmission, the ATF cooler, the ATF hoses, the ATF pipes, and the hydraulic circuit. Then, replace the main valve body or the regulator valve body and the torque converter. NO -Faulty torque converter clutch. Replace the torque converter.

DTC P0746: A/T Clutch Pressure Control Solenoid Valve A Stuck OFF

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). If DTC P0746 is stored in the PCM, the transmission does not shift to any gear other than 3rd or 4th gear because of the fail-safe function.

1. Warm up the engine to normal operating temperature (the radiator fan comes on).
2. Make sure that the transmission is filled to the proper level, and check for fluid leaks.
3. Drain the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ) through a strainer. Inspect the strainer for metal debris or excessive clutch material. Does the strainer have metal debris or excessive clutch material? YES -Replace the transmission. NO -Replace the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ), then go to step 4.
4. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
5. Clear the DTC with the HDS.
6. Select Clutch Pressure Control (Linear) Solenoid Valve A in the Miscellaneous Test Menu, and test A/T clutch pressure control solenoid valve A with the HDS. Does the HDS indicate NORMAL? YES -Intermittent failure, the system is OK at this time. NO -Faulty A/T clutch pressure control solenoid valve A. Replace the secondary valve body (A/T clutch pressure control solenoid valve A) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).

DTC P0747: A/T Clutch Pressure Control Solenoid Valve A Stuck ON

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). If DTC P0747 is stored in the PCM, the transmission does not shift to any gear other than 2nd or 5th gear because of the fail-safe function.

1. Warm up the engine to normal operating temperature (the radiator fan comes on).
2. Make sure that the transmission is filled to the proper level, and check for fluid leaks.
3. Drain the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ) through a strainer. Inspect the strainer for metal debris or excessive clutch material. Does the strainer have metal debris or excessive clutch material? YES -Replace the transmission. NO -Replace the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ), then go to step 4.
4. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
5. Start the engine.
6. With the brake pedal pressed, shift to D, and check the 2nd Pressure Switch signal with the HDS in the A/T Data List. Does the 2nd Pressure Switch turn on with a shock caused by engaging gears? YES -Faulty A/T clutch pressure control solenoid valve A. Replace the secondary valve body (A/T clutch pressure control solenoid valve A) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ). NO -Intermittent failure, the system is OK at this time.

DTC P0751: Shift Solenoid Valve A Stuck OFF

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). If DTC P0751 is stored in the PCM, the transmission does not shift to any gear other than 3rd or 4th gear because of the fail-safe function.

1. Warm up the engine to normal operating temperature (the radiator fan comes on).
2. Make sure that the transmission is filled to the proper level, and check for fluid leaks.
3. Drain the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ) through a strainer. Inspect the strainer for metal debris or excessive clutch material. Does the strainer have metal debris or excessive clutch material? YES -Replace the transmission. NO -Replace the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ), then go to step 4.
4. Raise the vehicle on a lift, make sure it is securely supported, and allow all four wheels to rotate freely.
5. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
6. Clear the DTC with the HDS.
7. Start the engine, disable the VSA by pressing the VSA OFF button.
8. Run the vehicle with the shift lever in D, and let the transmission shift slowly to 2nd gear, and check the 3rd Pressure Switch signal, the 5th Pressure Switch signal, and the Shift Control when the transmission shifts from 1st gear to 2nd gear with the HDS in the A/T Data List. Slow down, and stop the wheels. NOTE: Repeat two or three times if shifts are normal. Does the 5th Pressure Switch turn on momentarily in 2nd gear, then does the 3rd Pressure Switch turn on with a harsh shift? YES -Go to step 9. NO -Intermittent failure, the system is OK at this time.
9. Select Shift Solenoid Valve A in the Miscellaneous Test Menu, and check that shift solenoid valve A operates with the HDS. Is a clicking sound heard? YES -Faulty shift valve A. Replace the secondary valve body (shift valve A) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ). NO -Faulty shift solenoid valve A. Replace the secondary valve body (shift solenoid valve A) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).

DTC P0752: Shift Solenoid Valve A Stuck ON

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). If DTC P0752 is stored in the PCM, the transmission does not shift to any gear other than 2nd or 4th gear because of the fail-safe function, but if that DTC is a Pending DTC, the transmission does not shift to any gear other than 3rd or 6th gear because of the fail-safe function.

1. Warm up the engine to normal operating temperature (the radiator fan comes on).
2. Make sure that the transmission is filled to the proper level, and check for fluid leaks.
3. Drain the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ) through a strainer. Inspect the strainer for metal debris or excessive clutch material. Does the strainer have metal debris or excessive clutch material? YES -Replace the transmission. NO -Replace the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ), then go to step 4.
4. Raise the vehicle on a lift, make sure it is securely supported, and allow all four wheels to rotate freely.
5. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
6. Clear the DTC with the HDS.
7. Start the engine, disable the VSA by pressing the VSA OFF button.
8. Run the vehicle with the shift lever in D, and let the transmission shift slowly to 4th gear, and check the 3rd Pressure Switch signal, the 4th Pressure Switch signal, and the Shift Control when the transmission shifts from 3rd gear to 4th gear with the HDS in the A/T Data List. Slow down, and stop the wheels. NOTE: Repeat two or three times if shifts are normal. Does the 4th Pressure Switch turn off in 4th gear, then does the 3rd Pressure Switch turn on with a harsh shift? YES -Go to step 9. NO -Intermittent failure, the system is OK at this time.
9. Select Shift Solenoid Valve A in the Miscellaneous Test Menu, and check that shift solenoid valve A operates with the HDS. Is a clicking sound heard? YES -Faulty shift valve A. Replace the secondary valve body (shift valve A) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ). NO -Faulty shift solenoid valve A. Replace the secondary valve body (shift solenoid valve A) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ) M

DTC P0756: Shift Solenoid Valve B Stuck OFF

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). If DTC P0756 is stored in the PCM, the transmission does not shift to any gear other than 2nd or 5th gear because of the fail-safe function.

1. Warm up the engine to normal operating temperature (the radiator fan comes on).
2. Make sure that the transmission is filled to the proper level, and check for fluid leaks.
3. Drain the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ) through a strainer. Inspect the strainer for metal debris or excessive clutch material. Does the strainer have metal debris or excessive clutch material? YES -Replace the transmission. NO -Replace the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ), then go to step 4.
4. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
5. Clear the DTC with the HDS.
6. Start the engine.
7. With the brake pedal pressed, shift to D, and check the A/T Shift Sol VLV. B signal, the Input Shaft (Mainshaft) Speed, and the Shift Control with the HDS in the A/T Data List. Is the Input Shaft (Mainshaft) Speed 0 rpm when A/T Shift Sol VLV. B is OFF, and about the same as the engine speed when A/T Shift Sol VLV. B is ON? YES -Shift to P, and go to step 10 . NO -Shift to P, and go to step 8.
8. Clear the DTC with the HDS.
9. With the brake pedal pressed, shift to D, and check the A/T Shift Sol VLV. B signal, the Input Shaft (Mainshaft) Speed, and the Shift Control with the HDS in the A/T Data List. Does the Input Shaft (Mainshaft) Speed remain steady when A/T Shift Sol VLV. B is OFF and when it is ON? YES -Faulty 1st gear one-way clutch. Replace the countershaft 1st gear or the transmission. If you are replacing the countershaft 1st gear, clean off any metal debris or excessive clutch material inside the transmission, the ATF cooler, the ATF hoses, the ATF pipes, and the hydraulic circuit. Then, replace the countershaft 1st gear and the torque converter. NO -Intermittent failure, the system is OK at this time.
10. Select Shift Solenoid Valve B in the Miscellaneous Test Menu, and check that shift solenoid valve B operates with the HDS. Is a clicking sound heard? YES -Go to step 11. NO -Faulty shift solenoid valve B. Replace the secondary valve body (shift solenoid valve B) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
11. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
12. Raise the vehicle on a lift, make sure it is securely supported, and allow all four wheels to rotate freely.
13. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
14. Clear the DTC with the HDS.
15. Start the engine, disable the VSA by pressing the VSA OFF button. With the brake pedal pressed, shift to S, and upshift to 2nd gear by pressing the paddle shifter + (upshift switch).
16. Run the vehicle, and upshift to 3rd gear by pressing the paddle shifter + (upshift switch), and check the 3rd Pressure Switch signal, the 6th Pressure Switch signal, and the Shift Control with the HDS in the A/T Data List. Slow down, and stop the wheels. In 3rd gear, was the 3rd Pressure Switch OFF and was the 6th Pressure Switch ON? YES -Faulty shift valve B. Replace the secondary valve body (shift valve B) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ). NO -Faulty shift valve C. Replace the main valve body (shift valve C) or the transmission. If you are replacing the main valve body, clean off any metal debris or excessive clutch material inside the transmission, the ATF cooler, the ATF hoses, the ATF pipes, and the hydraulic circuit. Then, replace the main valve body and the torque converter.

DTC P0757: Shift Solenoid Valve B Stuck ON

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). If DTC P0757 is stored in the PCM, the transmission does not shift to any gear other than 2nd or 4th gear because of the fail-safe function.

1. Warm up the engine to normal operating temperature (the radiator fan comes on).
2. Make sure that the transmission is filled to the proper level, and check for fluid leaks.
3. Drain the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ) through a strainer. Inspect the strainer for metal debris or excessive clutch material. Does the strainer have metal debris or excessive clutch material? YES -Replace the transmission. NO -Replace the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ), then go to step 4.
4. Raise the vehicle on a lift, make sure it is securely supported, and allow all four wheels to rotate freely.
5. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
6. Clear the DTC with the HDS.
7. Start the engine, disable the VSA by pressing the VSA OFF button.
8. Run the vehicle with the shift lever in D, and let the transmission shift slowly to 6th gear, and check the 2nd Pressure Switch signal, the 3rd Pressure Switch signal, the 4th Pressure Switch signal, and the Shift Control when the transmission shifts from 5th gear to 6th gear with the HDS in the A/T Data List. Slowdown, and stop the wheels. NOTE: Repeat two or three times if shifts are normal. Does the 3rd Pressure Switch turn on momentarily in 6th gear, then does the 2nd Pressure Switch or the 4th Pressure Switch turn on in 6th gear? YES -Go to step 9. NO -Intermittent failure, the system is OK at this time.
9. Select Shift Solenoid Valve B in the Miscellaneous Test Menu, and check that shift solenoid valve B operates with the HDS. Is a clicking sound heard? YES -Faulty shift valve B. Replace the secondary valve body (shift valve B) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ). NO -Faulty shift solenoid valve B. Replace the secondary valve body (shift solenoid valve B) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).

DTC P0761: Shift Solenoid Valve C Stuck OFF

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ).

1. Warm up the engine to normal operating temperature (the radiator fan comes on).
2. Make sure that the transmission is filled to the proper level, and check for fluid leaks.
3. Drain the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ) through a strainer. Inspect the strainer for metal debris or excessive clutch material. Does the strainer have metal debris or excessive clutch material? YES -Replace the transmission. NO -Replace the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ), then go to step 4.
4. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
5. Clear the DTC with the HDS.
6. Test-drive the vehicle in reverse gear. NOTE: Repeat two or three times if shifts are normal. Does the vehicle move with reverse gear? YES -Intermittent failure, the system is OK at this time. NO -Go to step 7.
7. Select Shift Solenoid Valve C in the Miscellaneous Test Menu, and check that shift solenoid valve C operates with the HDS. Is a clicking sound heard? YES -Faulty reverse inhibitor valve or shift fork shaft. Replace the main valve body (reverse inhibitor valve), the regulator valve body (shift fork shaft), or the transmission. If you are replacing the main valve body or the regulator valve body, clean off any metal debris or excessive clutch material inside the transmission, the ATF cooler, the ATF hoses, the ATF pipes, and the hydraulic circuit. Then, replace the main valve body or the regulator valve body and the torque converter. NO -Faulty shift solenoid valve C. Replace shift solenoid valve C (see «SHIFT SOLENOID VALVE C TEST AND REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).

DTC P0762: Shift Solenoid Valve C Stuck ON

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ).

1. Warm up the engine to normal operating temperature (the radiator fan comes on).
2. Make sure that the transmission is filled to the proper level, and check for fluid leaks.
3. Drain the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ) through a strainer. Inspect the strainer for metal debris or excessive clutch material. Does the strainer have metal debris or excessive clutch material? YES -Replace the transmission. NO -Replace the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ), then go to step 4.
4. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
5. Clear the DTC with the HDS.
6. Start the engine.
7. With the brake pedal pressed, shift to D, and check the A/T Shift Sol VLV. B signal, the Input Shaft (Mainshaft) Speed, and the Shift Control with the HDS in the A/T Data List. Does the Input Shaft (Mainshaft) Speed remain steady when A/T Shift Sol VLV. B is OFF, and does the Input Shaft (Mainshaft) Speed read 0 rpm when A/T Shift Sol VLV. B is ON? YES -Go to step 8. NO -Intermittent failure, the system is OK at this time.
8. Select Shift Solenoid Valve C in the Miscellaneous Test Menu, and check that shift solenoid valve C operates with the HDS. Is a clicking sound heard? YES -Faulty 1st gear one-way clutch. Replace the countershaft 1st gear or the transmission. If you are replacing the countershaft 1st gear, clean off any metal debris or excessive clutch material inside the transmission, the ATF cooler, the ATF hoses, the ATF pipes, and the hydraulic circuit. Then, replace the countershaft 1st gear and the torque converter. NO -Faulty shift solenoid valve C. Replace shift solenoid valve C (see «SHIFT SOLENOID VALVE C TEST AND REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).

DTC P0776: A/T Clutch Pressure Control Solenoid Valve B Stuck OFF

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). If DTC P0776 is stored in the PCM, the transmission does not shift to any gear other than 2nd or 4th gear because of the fail-safe function.

1. Warm up the engine to normal operating temperature (the radiator fan comes on).
2. Make sure that the transmission is filled to the proper level, and check for fluid leaks.
3. Drain the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ) through a strainer. Inspect the strainer for metal debris or excessive clutch material. Does the strainer have metal debris or excessive clutch material? YES -Replace the transmission. NO -Replace the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ), then go to step 4.
4. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
5. Clear the DTC with the HDS.
6. Select Clutch Pressure Control (Linear) Solenoid Valve B in the Miscellaneous Test Menu, and test A/T clutch pressure control solenoid valve B with the HDS. Does the HDS indicate NORMAL? YES -Intermittent failure, the system is OK at this time. NO -Faulty A/T clutch pressure control solenoid valve B. Replace the secondary valve body (A/T clutch pressure control solenoid valve B) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).

DTC P0777: A/T Clutch Pressure Control Solenoid Valve B Stuck ON

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). If DTC P0777 is stored in the PCM, the transmission does not shift to any gear other than 3rd or 6th gear because of the fail-safe function.

1. Warm up the engine to normal operating temperature (the radiator fan comes on).
2. Make sure that the transmission is filled to the proper level, and check for fluid leaks.
3. Drain the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ) through a strainer. Inspect the strainer for metal debris or excessive clutch material. Does the strainer have metal debris or excessive clutch material? YES -Replace the transmission. NO -Replace the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ), then go to step 4.
4. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
5. Clear the DTC with the HDS.
6. Start the engine.
7. With the brake pedal pressed, shift to D, and check the 3rd Pressure Switch signal and the 6th Pressure Switch signal with the HDS in the A/T Data List. Does the 6th Pressure Switch turn on momentarily, then does the 3rd Pressure Switch turn on with a harsh shift? YES -Faulty A/T clutch pressure control solenoid valve B. Replace the secondary valve body (A/T clutch control solenoid valve B) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ). NO -Intermittent failure, the system is OK at this time.

DTC P0796: A/T Clutch Pressure Control Solenoid Valve C Stuck OFF

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). If DTC P0796 is stored in the PCM, the transmission does not shift to any gear other than 2nd or 5th gear because of the fail-safe function, but if that DTC is a Pending DTC, the transmission does not shift to any gear other than 3rd or 6th gear because of the fail-safe function.

1. Warm up the engine to normal operating temperature (the radiator fan comes on).
2. Make sure that the transmission is filled to the proper level, and check for fluid leaks.
3. Drain the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ) through a strainer. Inspect the strainer for metal debris or excessive clutch material. Does the strainer have metal debris or excessive clutch material? YES -Replace the transmission. NO -Replace the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ), then go to step 4.
4. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
5. Clear the DTC with the HDS.
6. Select Clutch Pressure Control (Linear) Solenoid Valve C in the Miscellaneous Test Menu, and test A/T clutch pressure control solenoid valve C with the HDS. Does the HDS indicate NORMAL? YES -Intermittent failure, the system is OK at this time. NO -Faulty A/T clutch pressure control solenoid valve C, shift valve C, D inhibitor valve, reverse inhibitor valve, or shift fork shaft. Replace the secondary valve body (A/T clutch pressure control solenoid valve C) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ), the main valve body (shift valve C, D inhibitor valve, or reverse inhibitor valve), the regulator valve body (shift fork shaft), or the transmission. If you are replacing the main valve body or the regulator valve body, clean off any metal debris or excessive clutch material inside the transmission, the ATF cooler, the ATF hoses, the ATF pipes, and the hydraulic circuit. Then, replace the main valve body or the regulator valve body and the torque converter.

DTC P0797: A/T Clutch Pressure Control Solenoid Valve C Stuck ON

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). If DTC P0797 is stored in the PCM, the transmission does not shift to any gear other than 1st or 4th gear because of the fail-safe function.

1. Warm up the engine to normal operating temperature (the radiator fan comes on).
2. Make sure that the transmission is filled to the proper level, and check for fluid leaks.
3. Drain the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ) through a strainer. Inspect the strainer for metal debris or excessive clutch material. Does the strainer have metal debris or excessive clutch material? YES -Replace the transmission. NO -Replace the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ), then go to step 4.
4. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
5. Clear the DTC with the HDS.
6. Start the engine.
7. With the brake pedal pressed, shift to D, and check the 4th Pressure Switch signal with the HDS in the A/T Data List. Does the 4th Pressure Switch turn on momentarily? YES -Faulty A/T clutch pressure control solenoid valve C. Replace the secondary valve body (A/T clutch pressure control solenoid valve C) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ). NO -Intermittent failure, the system is OK at this time.

DTC P0812: Open in Transmission Range Switch ATPR Switch Circuit

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

Scheme 75

Scheme 76

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Shift to R, and verify the A/T R Switch signal with the HDS in the A/T Data List. Is the A/T R Switch ON? YES -Intermittent failure, the system is OK at this time. NO -Go to step 3.
3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
4. Disconnect the transmission range switch connector.
5. Connect a jumper wire between transmission range switch connector terminal No. 8 and body ground.
6. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
7. Check the A/T R Switch signal with the HDS. Is the A/T R Switch ON? YES -Replace the transmission range switch (see «TRANSMISSION RANGE SWITCH REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ), then go to step 14 . NO -Go to step 8.
8. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
9. Jump the SCS line with the HDS.
10. Disconnect PCM connector C (49P).
11. Check for continuity between PCM connector terminal C25 and body ground. Is there continuity? YES -Go to step 18 . NO -Repair an open in the wire between PCM connector terminal C25 and transmission range switch connector terminal No. 8, then go to step 12.
12. Reconnect all connectors.
13. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
14. Clear the DTC with the HDS.
15. Test-drive the vehicle in R at speeds below 3 mph (5 km/h) for at least 2 seconds, then increase the speed and test-drive at speeds over 3 mph (5 km/h) for at least 2 seconds. Slow down, and stop the wheels.
16. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0812 indicated? YES -Check for poor connections or loose terminals between the transmission range switch and the PCM, then go to step 1 . NO -Go to step 17.
17. Monitor the OBD STATUS for P0812 in the DTCs MENU with the HDS. Does the HDS indicate PASSED? YES -Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 16 , go to the indicated «DTC'S TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) . NO -If the HDS indicates FAILED, check for poor connections or loose terminals between the transmission range switch and the PCM, then go to step 1 . If the HDS indicates NOT COMPLETED, go to step 15 .
18. Reconnect all connectors.
19. Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ).
20. Test-drive the vehicle in R at speeds below 3 mph (5 km/h) for at least 2 seconds, then increase the speed and test-drive at speeds over 3 mph (5 km/h) for at least 2 seconds. Slow down, and stop the wheels
21. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0812 indicated? YES -Check for poor connections or loose terminals between the transmission range switch and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ), then go to step 20 . If the PCM was substituted, go to step 1 . NO -Go to step 22.
22. Monitor the OBD STATUS for P0812 in the DTCs MENU with the HDS. Does the HDS indicate PASSED? YES -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). If any other Pending or Confirmed DTCs were indicated in step 21 , go to the indicated «DTC'S TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) . NO -If the HDS indicates FAILED, check for poor connections or loose terminals between the transmission range switch and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ), then go to step 20 . If the PCM was substituted, go to step 1 . If the HDS indicates NOT COMPLETED, go to step 20 .

DTC P0842: Short in Transmission Fluid Pressure Switch A (2nd Clutch) Circuit, or Transmission Fluid Pressure Switch A (2nd Clutch) Stuck ON

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission. If DTC P0842 is stored in the PCM, the transmission does not shift to any gear other than 2nd or 5th gear because of the fail-safe function.

Scheme 77

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Check the 2nd Pressure Switch signal with the HDS in the A/T Data List. Is the 2nd Pressure Switch ON? YES -Go to step 4. NO -Intermittent failure, the system is OK at this time.
4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
5. Disconnect the transmission fluid pressure switch A (2nd clutch) connector.
6. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
7. Check the 2nd Pressure Switch signal with the HDS in the A/T Data List. Is the 2nd Pressure Switch OFF? YES -Replace transmission fluid pressure switch A (2nd clutch) (see «TRANSMISSION FLUID PRESSURE SWITCH A (2ND CLUTCH) REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ). NO -Go to step 8.
8. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
9. Jump the SCS line with the HDS.
10. Disconnect PCM connector C (49P).
11. Check for continuity between PCM connector terminal C27 and body ground. Is there continuity? YES -Repair a short to body ground in the wire between PCM connector terminal C27 and the transmission fluid pressure switch A (2nd clutch) connector terminal. NO -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ).

DTC P0843: Open in Transmission Fluid Pressure Switch A (2nd Clutch) Circuit, or Transmission Fluid Pressure Switch A (2nd Clutch) Stuck OFF

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). If DTC P0843 is stored in the PCM, the transmission does not shift to any gear other than 2nd through 4th gear because of the fail-safe function.

Scheme 78

Scheme 79

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Raise the vehicle on a lift, make sure it is securely supported, and allow all wheels to rotate freely.
4. Start the engine, disable the VSA by pressing the VSA OFF button. Run the vehicle with the sequential sportshift mode in 2nd gear. Check the 2nd Pressure Switch signal with the HDS in the A/T Data List. Slow down, and stop the wheels. Is the 2nd Pressure Switch ON in 2nd gear? YES - Intermittent failure, the system is OK at this time. Check for poor connections and loose terminals between transmission fluid pressure switch A (2nd clutch) and the PCM. NO -Go to step 5.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Disconnect the transmission fluid pressure switch A (2nd clutch) connector.
7. Connect a jumper wire between the transmission fluid pressure switch A (2nd clutch) connector terminal and body ground.
8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
9. Check the 2nd Pressure Switch signal with the HDS in the A/T Data List. Is the 2nd Pressure Switch ON? YES -Replace transmission fluid pressure switch A (2nd clutch) (see «TRANSMISSION FLUID PRESSURE SWITCH A (2ND CLUTCH) REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ). NO -Go to step 10.
10. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
11. Remove the jumper wire.
12. Jump the SCS line with the HDS.
13. Disconnect PCM connector C (49P).
14. Check for continuity between PCM connector terminal C27 and the transmission fluid pressure switch A (2nd clutch) connector terminal. Is there continuity? YES -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). NO -Repair an open in the wire between PCM connector terminal C27 and the transmission fluid pressure switch A (2nd clutch) connector terminal.

DTC P0847: Short in Transmission Fluid Pressure Switch B (3rd Clutch) Circuit, or Transmission Fluid Pressure Switch B (3rd Clutch) Stuck ON

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission. If DTC P0847 is stored in the PCM, the transmission does not shift to any gear other than 3rd or 6th gear because of the fail-safe function.

Scheme 80

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Check the 3rd Pressure Switch signal with the HDS in the A/T Data List. Is the 3rd Pressure Switch ON? YES -Go to step 4. NO - Intermittent failure, the system is OK at this time.
4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
5. Disconnect the transmission fluid pressure switch B (3rd clutch) connector.
6. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
7. Check the 3rd Pressure Switch signal with the HDS in the A/T Data List. Is the 3rd Pressure Switch OFF? YES -Replace transmission fluid pressure switch B (3rd clutch) (see «TRANSMISSION FLUID PRESSURE SWITCH B (3RD CLUTCH) REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ). NO -Go to step 8.
8. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
9. Jump the SCS line with the HDS.
10. Disconnect PCM connector C (49P).
11. Check for continuity between PCM connector terminal C38 and body ground. Is there continuity? YES -Repair a short to body ground in the wire between PCM connector terminal C38 and the transmission fluid pressure switch B (3rd clutch) connector terminal. NO -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ).

DTC P0848: Open in Transmission Fluid Pressure Switch B (3rd Clutch) Circuit, or Transmission Fluid Pressure Switch B (3rd Clutch) Stuck OFF

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). If DTC P0848 is stored in the PCM, the transmission does not shift to any gear other than 3rd through 5th gear because of the fail-safe function.

Scheme 81

Scheme 82

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Raise the vehicle on a lift, make sure it is securely supported, and allow all wheels to rotate freely.
4. Start the engine, disable the VSA by pressing the VSA OFF button. Run the vehicle with the sequential sportshift mode in 3rd gear. Check the 3rd Pressure Switch signal with the HDS in the A/T Data List. Slow down, and stop the wheels. Is the 3rd Pressure Switch ON in 3rd gear? YES -Intermittent failure, the system is OK at this time. Check for poor connections and loose terminals between transmission fluid pressure switch B (3rd clutch) and the PCM. NO -Go to step 5.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Disconnect the transmission fluid pressure switch B (3rd clutch) connector.
7. Connect a jumper wire between the transmission fluid pressure switch B (3rd clutch) connector terminal and body ground.
8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
9. Check the 3rd Pressure Switch signal with the HDS in the A/T Data List. Is the 3rd Pressure Switch ON? YES -Replace transmission fluid pressure switch B (3rd clutch) (see «TRANSMISSION FLUID PRESSURE SWITCH B (3RD CLUTCH) REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ). NO -Go to step 10.
10. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
11. Remove the jumper wire.
12. Jump the SCS line with the HDS.
13. Disconnect PCM connector C (49P).
14. Check for continuity between PCM connector terminal C38 and the transmission fluid pressure switch B (3rd clutch) connector terminal. Is there continuity? YES -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). NO -Repair an open in the wire between PCM connector terminal C38 and the transmission fluid pressure switch B (3rd clutch) connector terminal.

DTC P084C: Short in Line Pressure Switch Circuit, or Line Pressure Switch Stuck ON

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). If DTC P084C is stored in the PCM, engine torque is restricted because of the fail-safe function.

Scheme 83

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Check the Line Pressure Pressure Switch signal with the HDS in the A/T Data List. Is the Line Pressure Pressure Switch ON? YES -Go to step 4. NO -Intermittent failure, the system is OK at this time.
4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
5. Disconnect the line pressure switch connector.
6. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
7. Check the Line Pressure Pressure Switch signal with the HDS in the A/T Data List. Is the Line Pressure Pressure Switch OFF? YES -Replace the line pressure switch (see «LINE PRESSURE SWITCH REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ). NO -Go to step 8.
8. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
9. Jump the SCS line with the HDS.
10. Disconnect PCM connector C (49P).
11. Check for continuity between PCM connector terminal C35 and body ground. Is there continuity? YES -Repair a short to body ground in the wire between PCM connector terminal C35 and the line pressure switch connector terminal. NO -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ).

DTC P0872: Short in Transmission Fluid Pressure Switch C (4th Clutch) Circuit, or Transmission Fluid Pressure Switch C (4th Clutch) Stuck ON

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission. If DTC P0872 is stored in the PCM, the transmission does not shift to any gear other than 1st or 4th gear because of the fail-safe function.

Scheme 84

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Check the 4th Pressure Switch signal with the HDS in the A/T Data List. Is the 4th Pressure Switch ON? YES -Go to step 4. NO -Intermittent failure, the system is OK at this time.
4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
5. Disconnect the transmission fluid pressure switch C (4th clutch) connector.
6. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
7. Check the 4th Pressure Switch signal with the HDS in the A/T Data List. Is the 4th Pressure Switch OFF? YES -Replace transmission fluid pressure switch C (4th clutch) (see «TRANSMISSION FLUID PRESSURE SWITCH C (4TH CLUTCH) REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ). NO -Go to step 8.
8. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
9. Jump the SCS line with the HDS.
10. Disconnect PCM connector C (49P).
11. Check for continuity between PCM connector terminal C37 and body ground. Is there continuity? YES -Repair a short to body ground in the wire between PCM connector terminal C37 and the transmission fluid pressure switch C (4th clutch) connector terminal. NO -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ).

DTC P0873: Open in Transmission Fluid Pressure Switch C (4th Clutch) Circuit, or Transmission Fluid Pressure Switch C (4th Clutch) Stuck OFF

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). If DTC P0873 is stored in the PCM, the transmission does not shift to any gear other than 1st or 4th gear because of the fail-safe function.

Scheme 85

Scheme 86

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Raise the vehicle on a lift, make sure it is securely supported, and allow all wheels to rotate freely.
4. Start the engine, disable the VSA by pressing the VSA OFF button. Run the vehicle with the sequential sportshift mode in 4th gear. Check the 4th Pressure Switch signal with the HDS in the A/T Data List. Slow down, and stop the wheels. Is the 4th Pressure Switch ON in 4th gear? YES -Intermittent failure, the system is OK at this time. Check for poor connections and loose terminals between transmission fluid pressure switch C (4th clutch) and the PCM. NO -Go to step 5.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Disconnect the transmission fluid pressure switch C (4th clutch) connector.
7. Connect a jumper wire between the transmission fluid pressure switch C (4th clutch) connector terminal and body ground.
8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
9. Check the 4th Pressure Switch signal with the HDS in the A/T Data List. Is the 4th Pressure Switch ON? YES -Replace transmission fluid pressure switch C (4th clutch) (see «TRANSMISSION FLUID PRESSURE SWITCH C (4TH CLUTCH) REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ). NO -Go to step 10.
10. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
11. Remove the jumper wire.
12. Jump the SCS line with the HDS.
13. Disconnect PCM connector C (49P).
14. Check for continuity between PCM connector terminal C37 and the transmission fluid pressure switch C (4th clutch) connector terminal. Is there continuity? YES -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). NO -Repair an open in the wire between PCM connector terminal C37 and the transmission fluid pressure switch C (4th clutch) connector terminal.

DTC P0877: Short in Transmission Fluid Pressure Switch D (5th Clutch) Circuit, or Transmission Fluid Pressure Switch D (5th Clutch) Stuck ON

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission. If DTC P0877 is stored in the PCM, the transmission does not shift to any gear other than 2nd or 5th gear because of the fail-safe function.

Scheme 87

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Check the 5th Pressure Switch signal with the HDS in the A/T Data List. Is the 5th Pressure Switch ON? YES -Go to step 4. NO -Intermittent failure, the system is OK at this time.
4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
5. Disconnect the transmission fluid pressure switch D (5th clutch) connector.
6. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
7. Check the 5th Pressure Switch signal with the HDS in the A/T Data List. Is the 5th Pressure Switch OFF? YES -Replace transmission fluid pressure switch D (5th clutch) (see «TRANSMISSION FLUID PRESSURE SWITCH D (5TH CLUTCH) REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ). NO -Go to step 8.
8. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
9. Jump the SCS line with the HDS.
10. Disconnect PCM connector C (49P).
11. Check for continuity between PCM connector terminal C14 and body ground. Is there continuity? YES -Repair a short to body ground in the wire between PCM connector terminal C14 and the transmission fluid pressure switch D (5th clutch) connector terminal. NO -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ).

DTC P0878: Open in Transmission Fluid Pressure Switch D (5th Clutch) Circuit, or Transmission Fluid Pressure Switch D (5th Clutch) Stuck OFF

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). If DTC P0878 is stored in the PCM, the transmission does not shift to any gear other than 2nd through 5th gear because of the fail-safe function.

Scheme 88

Scheme 89

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Raise the vehicle on a lift, make sure it is securely supported, and allow all wheels to rotate freely.
4. Start the engine, disable the VSA by pressing the VSA OFF button. Run the vehicle with the sequential sportshift mode in 5th gear. Check the 5th Pressure Switch signal with the HDS in the A/T Data List. Slow down, and stop the wheels. Is the 5th Pressure Switch ON in 5th gear? YES -Intermittent failure, the system is OK at this time. Check for poor connections and loose terminals between transmission fluid pressure switch D (5th clutch) and the PCM. NO -Go to step 5.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Disconnect the transmission fluid pressure switch D (5th clutch) connector.
7. Connect a jumper wire between the transmission fluid pressure switch D (5th clutch) connector terminal and body ground.
8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
9. Check the 5th Pressure Switch signal with the HDS in the A/T Data List. Is the 5th Pressure Switch ON? YES -Replace transmission fluid pressure switch D (5th clutch) (see «TRANSMISSION FLUID PRESSURE SWITCH D (5TH CLUTCH) REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ). NO -Go to step 10.
10. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
11. Remove the jumper wire.
12. Jump the SCS line with the HDS.
13. Disconnect PCM connector C (49P).
14. Check for continuity between PCM connector terminal C14 and the transmission fluid pressure switch D (5th clutch) connector terminal. Is there continuity? YES -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). NO -Repair an open in the wire between PCM connector terminal C14 and the transmission fluid pressure switch D (5th clutch) connector terminal.

DTC P0962: Problem in A/T Clutch Pressure Control Solenoid Valve A Circuit

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission. If DTC P0962 is stored in the PCM, the transmission does not shift to 2nd or 5th gear because of the fail-safe function.

Scheme 90

Scheme 91

Scheme 92

Scheme 93

Scheme 94

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0962 indicated? YES -Go to step 4. NO -Intermittent failure, the system is OK at this time. Check for poor connections and loose terminals between A/T clutch pressure control solenoid valve A and the PCM.
4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
5. Jump the SCS line with the HDS.
6. Disconnect PCM connector C (49P).
7. Check for continuity between PCM connector terminal C21 and body ground. Is there continuity? YES -Go to step 8. NO -Go to step 10 .
8. Disconnect the A/T clutch pressure control solenoid valve A connector.
9. Check for continuity between A/T clutch pressure control solenoid valve A connector terminal No. 1 and body ground. Is there continuity? YES -Repair a short to body ground in the wire between PCM connector terminal C21 and A/T clutch pressure control solenoid valve A connector terminal No. 1. NO -Faulty A/T clutch pressure control solenoid valve A. Replace the secondary valve body (A/T clutch pressure control solenoid valve A) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
10. Disconnect the A/T clutch pressure control solenoid valve A connector.
11. Check for continuity between PCM connector terminal C21 and A/T clutch pressure control solenoid valve A connector terminal No. 1. Is there continuity? YES -Go to step 12. NO -Repair an open in the wire between A/T clutch pressure control solenoid valve A connector terminal No. 1 and PCM connector terminal C21.
12. Check for continuity between A/T clutch pressure control solenoid valve A connector terminal No. 2 and body ground. Is there continuity? YES -Go to step 13. NO -Repair an open in the wire between A/T clutch pressure control solenoid valve A connector terminal No. 2 and body ground (G101) (see «CONNECTOR TO FUSE/RELAY BOX INDEX»(/acura/zdx/i-2009-2013/remont/body-electrical/#fuserelay-boxes__connector-to-fuserelay-box-index) ), or repair poor body ground (G101).
13. Check for continuity between A/T clutch pressure control solenoid valve A connector terminals No. 1 and No. 2. Is there continuity? YES -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). NO -Faulty A/T clutch pressure control solenoid valve A. Replace the secondary valve body (A/T clutch pressure control solenoid valve A) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).

DTC P0963: Problem in A/T Clutch Pressure Control Solenoid Valve A

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission. If DTC P0963 is stored in the PCM, the transmission does not shift to 2nd or 5th gear because of the fail-safe function.

Scheme 95

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0963 indicated? YES -Go to step 4. NO -Intermittent failure, the system is OK at this time.
4. Check the A/T C.P.C. Sol VLV. A Actual command with the HDS in the A/T Data List. Is there 35 mA or more? YES -Go to step 5. NO -Faulty A/T clutch pressure control solenoid valve A. Replace the secondary valve body (A/T clutch control solenoid valve A) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Jump the SCS line with the HDS.
7. Disconnect PCM connector B (49P).
8. Check for continuity between: PCM connector terminal B1 and body ground. PCM connector terminal B40 and body ground. Is there continuity? YES -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). NO -Repair an open in the wires between: PCM connector terminal B1 and body ground (G101) (see «CONNECTOR TO FUSE/RELAY BOX INDEX»(/acura/zdx/i-2009-2013/remont/body-electrical/#fuserelay-boxes__connector-to-fuserelay-box-index) ), or repair poor body ground (G101). PCM connector terminal B40 and body ground (G101) (see «CONNECTOR TO FUSE/RELAY BOX INDEX»(/acura/zdx/i-2009-2013/remont/body-electrical/#fuserelay-boxes__connector-to-fuserelay-box-index) ), or repair poor body ground (G101).

DTC P0966: Problem in A/T Clutch Pressure Control Solenoid Valve B Circuit

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission. If DTC P0966 is stored in the PCM, the transmission does not shift to any gear other than 1st, 2nd, or 5th gear because of the fail-safe function.

Scheme 96

Scheme 97

Scheme 98

Scheme 99

Scheme 100

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0966 indicated? YES -Go to step 4. NO -Intermittent failure, the system is OK at this time. Check for poor connections and loose terminals between A/T clutch pressure control solenoid valve B and the PCM.
4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
5. Jump the SCS line with the HDS.
6. Disconnect PCM connector B (49P).
7. Check for continuity between PCM connector terminal B10 and body ground. Is there continuity? YES -Go to step 8. NO -Go to step 10 .
8. Disconnect the A/T clutch pressure control solenoid valve B connector.
9. Check for continuity between A/T clutch pressure control solenoid valve B connector terminal No. 1 body ground. Is there continuity? YES -Repair a short to body ground in the wire between PCM connector terminal B10 and A/T clutch pressure control solenoid valve B connector terminal No. 1. NO -Faulty A/T clutch pressure control solenoid valve B. Replace the secondary valve body (A/T clutch pressure control solenoid valve B) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
10. Disconnect the A/T clutch pressure control solenoid valve B connector.
11. Check for continuity between PCM connector terminal B10 and A/T clutch pressure control solenoid valve B connector terminal No. 1. Is there continuity? YES -Go to step 12. NO -Repair an open in the wire between A/T clutch pressure control solenoid valve B connector terminal No. 1 and PCM connector terminal B10.
12. Check for continuity between A/T clutch pressure control solenoid valve B connector terminal No. 2 and body ground. Is there continuity? YES -Go to step 13. NO -Repair an open in the wire between A/T clutch pressure control solenoid valve B connector terminal No. 2 and body ground (G101) (see «CONNECTOR TO FUSE/RELAY BOX INDEX»(/acura/zdx/i-2009-2013/remont/body-electrical/#fuserelay-boxes__connector-to-fuserelay-box-index) ), or repair poor body ground (G101).
13. Check for continuity between A/T clutch pressure control solenoid valve B connector terminals No. 1 and No. 2. Is there continuity? YES -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). NO -Faulty A/T clutch pressure control solenoid valve B. Replace the secondary valve body (A/T clutch pressure control solenoid valve B) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).

DTC P0967: Problem in A/T Clutch Pressure Control Solenoid Valve B

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission. If DTC P0967 is stored in the PCM, the transmission does not shift to any gear other than 1st, 2nd, or 5th gear because of the fail-safe function.

Scheme 101

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0967 indicated? YES -Go to step 4. NO -Intermittent failure, the system is OK at this time.
4. Check the A/T C.P.C. Sol VLV. B Actual command with the HDS in the A/T Data List. Is there 35 mA or more? YES -Go to step 5. NO -Faulty A/T clutch pressure control solenoid valve B. Replace the secondary valve body (A/T clutch pressure control solenoid valve B) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Jump the SCS line with the HDS.
7. Disconnect PCM connector B (49P).
8. Check for continuity between: PCM connector terminal B1 and body ground. PCM connector terminal B40 and body ground. Is there continuity? YES -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). NO -Repair an open in the wires between: PCM connector terminal B1 and body ground (G101) (see «CONNECTOR TO FUSE/RELAY BOX INDEX»(/acura/zdx/i-2009-2013/remont/body-electrical/#fuserelay-boxes__connector-to-fuserelay-box-index) ), or repair poor body ground (G101). PCM connector terminal B40 and body ground (G101) (see «CONNECTOR TO FUSE/RELAY BOX INDEX»(/acura/zdx/i-2009-2013/remont/body-electrical/#fuserelay-boxes__connector-to-fuserelay-box-index) ), or repair poor body ground (G101).

DTC P0970: Problem in A/T Clutch Pressure Control Solenoid Valve C Circuit

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission. If DTC P0970 is stored in the PCM, the transmission does not shift to any gear other than 1st, 2nd, or 5th gear because of the fail-safe function.

Scheme 102

Scheme 103

Scheme 104

Scheme 105

Scheme 106

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0970 indicated? YES -Go to step 4. NO -Intermittent failure, the system is OK at this time. Check for poor connections and loose terminals between A/T clutch pressure control solenoid valve C and the PCM.
4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
5. Jump the SCS line with the HDS.
6. Disconnect PCM connector B (49P).
7. Check for continuity between PCM connector terminal B21 and body ground. Is there continuity? YES -Go to step 8. NO -Go to step 10 .
8. Disconnect the A/T clutch pressure control solenoid valve C connector.
9. Check for continuity between A/T clutch pressure control solenoid valve C connector terminal No. 1 and body ground. Is there continuity? YES -Repair a short to body ground in the wire between PCM connector terminal B21 and A/T clutch pressure control solenoid valve C connector terminal No. 1 NO -Faulty A/T clutch pressure control solenoid valve C. Replace the secondary valve body (A/T clutch pressure control solenoid valve C) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
10. Disconnect the A/T clutch pressure control solenoid valve C connector.
11. Check for continuity between PCM connector terminal B21 and A/T clutch pressure control solenoid valve C connector terminal No. 1. Is there continuity? YES -Go to step 12. NO -Repair an open in the wire between A/T clutch pressure control solenoid valve C connector terminal No. 1 and PCM connector terminal B21.
12. Check for continuity between A/T clutch pressure control solenoid valve C connector terminal No. 2 and body ground. Is there continuity? YES -Go to step 13. NO -Repair an open in the wire between A/T clutch pressure control solenoid valve C connector terminal No. 2 and body ground (G101) (see «CONNECTOR TO FUSE/RELAY BOX INDEX»(/acura/zdx/i-2009-2013/remont/body-electrical/#fuserelay-boxes__connector-to-fuserelay-box-index) ), or repair poor body ground (G101).
13. Check for continuity between A/T clutch pressure control solenoid valve C connector terminals No. 1 and No. 2. Is there continuity? YES -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). NO -Faulty A/T clutch pressure control solenoid valve C. Replace the secondary valve body (A/T clutch pressure control solenoid valve C) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).

DTC P0971: Problem in A/T Clutch Pressure Control Solenoid Valve C

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission. If DTC P0971 is stored in the PCM, the transmission does not shift to any gear other than 1st, 2nd, or 5th gear because of the fail-safe function.

Scheme 107

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0971 indicated? YES -Go to step 4. NO -Intermittent failure, the system is OK at this time.
4. Check the A/T C.P.C. Sol VLV. C Actual command with the HDS in the A/T Data List. Is there 35 mA or more? YES -Go to step 5. NO -Faulty A/T clutch pressure control solenoid valve C. Replace the secondary valve body (A/T clutch pressure control solenoid valve C) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Jump the SCS line with the HDS.
7. Disconnect PCM connector B (49P).
8. Check for continuity between: PCM connector terminal B1 and body ground. PCM connector terminal B40 and body ground. Is there continuity? YES -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). NO -Repair an open in the wires between: PCM connector terminal B1 and body ground (G101) (see «CONNECTOR TO FUSE/RELAY BOX INDEX»(/acura/zdx/i-2009-2013/remont/body-electrical/#fuserelay-boxes__connector-to-fuserelay-box-index) ), or repair poor body ground (G101). PCM connector terminal B40 and body ground (G101) (see «CONNECTOR TO FUSE/RELAY BOX INDEX»(/acura/zdx/i-2009-2013/remont/body-electrical/#fuserelay-boxes__connector-to-fuserelay-box-index) ), or repair poor body ground (G101).

DTC P0973: Short in Shift Solenoid Valve A Circuit

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission. If DTC P0973 is stored in the PCM, the transmission does not shift to 2nd or 5th gear because of the fail-safe function.

Scheme 108

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Start the engine in P, and wait for at least 1 second.
4. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0973 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for poor connections and loose terminals between shift solenoid valve A and the PCM.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Disconnect the shift solenoid valve A connector.
7. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
8. Clear the DTC with the HDS.
9. Start the engine in P, and wait for at least 1 second.
10. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0973 indicated? YES -Go to step 11. NO -Faulty shift solenoid valve A. Replace the secondary valve body (shift solenoid valve A) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
11. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
12. Jump the SCS line with the HDS.
13. Disconnect PCM connector C (49P).
14. Check for continuity between PCM connector terminals C20 and body ground. Is there continuity? YES -Repair a short to body ground in the wire between PCM connector terminal C20 and shift solenoid valve A connector terminal No. 2. NO -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ).

DTC P0974: Open in Shift Solenoid Valve A Circuit

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission. If DTC P0974 is stored in the PCM, the transmission does not shift to 2nd or 5th gear because of the fail-safe function.

Scheme 109

Scheme 110

Scheme 111

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Start the engine. With the brake pedal pressed, shift to R, and wait for at least 1 second.
4. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0974 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for poor connections and loose terminals between shift solenoid valve A and the PCM.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Disconnect the shift solenoid valve A connector.
7. Connect a jumper wire between shift solenoid valve A connector terminal No. 2 and body ground.
8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
9. Clear the DTC with the HDS.
10. Start the engine in P, and wait for at least 1 second.
11. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0973 indicated? YES -Go to step 12. NO -Go to step 15 .
12. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
13. Remove the jumper wire.
14. Check for continuity between shift solenoid valve A connector terminal No. 1 and body ground. Is there continuity? YES -Faulty shift solenoid valve A. Replace the secondary valve body (shift solenoid valve A) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ). NO -Repair an open in the wire between shift solenoid valve A connector terminal No. 1 and body ground (G101) (see «CONNECTOR TO FUSE/RELAY BOX INDEX»(/acura/zdx/i-2009-2013/remont/body-electrical/#fuserelay-boxes__connector-to-fuserelay-box-index) ), or repair poor body ground (G101).
15. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
16. Remove the jumper wire.
17. Jump the SCS line with the HDS.
18. Disconnect PCM connector C (49P).
19. Check for continuity between PCM connector terminal C20 and shift solenoid valve A connector terminal No. 2. Is there continuity? YES -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). NO -Repair an open in the wire between PCM connector terminal C20 and shift solenoid valve A connector terminal No. 2.

DTC P0976: Short in Shift Solenoid Valve B Circuit

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission. If DTC P0976 is stored in the PCM, the transmission does not shift to any gear other than 1st, 2nd, or 5th gear because of the fail-safe function.

Scheme 112

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Start the engine. With the brake pedal pressed, shift to D, and wait for at least 3 seconds, then move the shift lever back into P.
4. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0976 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Disconnect the shift solenoid valve B connector.
7. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
8. Clear the DTC with the HDS.
9. Start the engine. With the brake pedal pressed, shift to D, and wait for at least 3 seconds, then move the shift lever back into P.
10. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0976 indicated? YES -Go to step 11. NO -Faulty shift solenoid valve B. Replace the secondary valve body (shift solenoid valve B) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
11. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
12. Jump the SCS line with the HDS.
13. Disconnect PCM connector C (49P).
14. Check for continuity between PCM connector terminals C28 and body ground. Is there continuity? YES -Repair a short to body ground in the wire between PCM connector terminal C28 and shift solenoid valve B connector terminal No. 2. NO -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ).

DTC P0977: Open in Shift Solenoid Valve B Circuit

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission. If DTC P0977 is stored in the PCM, the transmission does not shift to any gear other than 1st, 2nd, or 5th gear because of the fail-safe function.

Scheme 113

Scheme 114

Scheme 115

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Start the engine in P, and wait for at least 1 second.
4. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0977 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for poor connections and loose terminals between shift solenoid valve B and the PCM.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Disconnect the shift solenoid valve B connector.
7. Connect a jumper wire between shift solenoid valve B connector terminal No. 2 and body ground.
8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
9. Clear the DTC with the HDS.
10. Start the engine. With the brake pedal pressed, shift to D, and wait for at least 3 seconds, then move the shift lever back into P.
11. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0976 indicated? YES -Go to step 12. NO -Go to step 15 .
12. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
13. Remove the jumper wire.
14. Check for continuity between shift solenoid valve B connector terminal No. 1 and body ground. Is there continuity? YES -Faulty shift solenoid valve B. Replace the secondary valve body (shift solenoid valve B) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ). NO -Repair an open in the wire between shift solenoid valve B connector terminal No. 1 and body ground (G101) (see «CONNECTOR TO FUSE/RELAY BOX INDEX»(/acura/zdx/i-2009-2013/remont/body-electrical/#fuserelay-boxes__connector-to-fuserelay-box-index) ), or repair poor body ground (G101).
15. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
16. Remove the jumper wire.
17. Jump the SCS line with the HDS.
18. Disconnect PCM connector C (49P).
19. Check for continuity between PCM connector terminal C28 and shift solenoid valve B connector terminal No. 2. Is there continuity? YES -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). NO -Repair an open in the wire between PCM connector terminal C28 and shift solenoid valve B connector terminal No. 2.

DTC P0979: Short in Shift Solenoid Valve C Circuit

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission. If DTC P0979 is stored in the PCM, the transmission does not shift to 2nd or 5th gear because of the fail-safe function.

Scheme 116

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Start the engine in P, and wait for at least 1 second.
4. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0979 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for poor connections and loose terminals between shift solenoid valve C and the PCM.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Disconnect the shift solenoid valve C connector.
7. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
8. Clear the DTC with the HDS.
9. Start the engine in P, and wait for at least 1 second.
10. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0979 indicated? YES -Go to step 11. NO -Replace shift solenoid valve C (see «SHIFT SOLENOID VALVE C TEST AND REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
11. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
12. Jump the SCS line with the HDS.
13. Disconnect PCM connector C (49P).
14. Check for continuity between PCM connector terminals C9 and body ground. Is there continuity? YES -Repair a short to body ground in the wire between PCM connector terminal C9 and shift solenoid valve C connector terminal No. 2. NO -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ).

DTC P0980: Open in Shift Solenoid Valve C Circuit

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission. If DTC P0980 is stored in the PCM, the transmission does not shift to 2nd or 5th gear because of the fail-safe function.

Scheme 117

Scheme 118

Scheme 119

Scheme 120

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Start the engine. With the brake pedal pressed, shift to N or D, and wait for at least 1 second.
4. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0980 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for poor connections and loose terminals between shift solenoid valve C and the PCM.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Check for a blown No. 10 (10 A) fuse in the driver's under-dash fuse/relay box. Is the No. 10 (10 A) fuse OK? YES -Go to step 7. NO -Repair a short to body ground in the wire between PCM connector terminal A1 and the driver's under-dash fuse/relay box.
7. Jump the SCS line with the HDS.
8. Disconnect PCM connectors A (49P).
9. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
10. Measure the voltage between PCM connector terminals A1 and body ground. Is there battery voltage? YES -Go to step 11. NO -Repair an open in the wire between PCM connector terminal A1 and the driver's under-dash fuse/ relay box.
11. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
12. Connect PCM connector A (49P).
13. Disconnect the shift solenoid valve C connector.
14. Connect a jumper wire between shift solenoid valve C connector terminal No. 2 and body ground.
15. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
16. Clear the DTC with the HDS.
17. Start the engine in P, and wait for at least 1 second.
18. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0979 indicated? YES -Go to step 19. NO -Go to step 22 .
19. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
20. Remove the jumper wire.
21. Check for continuity between shift solenoid valve C connector terminal No. 1 and body ground. Is there continuity? YES -Replace shift solenoid valve C (see «SHIFT SOLENOID VALVE C TEST AND REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ). NO -Repair an open in the wire between shift solenoid valve C connector terminal No. 1 and body ground (G101) (see «CONNECTOR TO FUSE/RELAY BOX INDEX»(/acura/zdx/i-2009-2013/remont/body-electrical/#fuserelay-boxes__connector-to-fuserelay-box-index) ), or repair poor body ground (G101).
22. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
23. Remove the jumper wire.
24. Jump the SCS line with the HDS.
25. Disconnect PCM connector C (49P).
26. Check for continuity between PCM connector terminal C9 and shift solenoid valve C connector terminal No. 2. Is there continuity? YES -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). NO -Repair an open in the wire between PCM connector terminal C9 and shift solenoid valve C connector terminal No. 2.

DTC P0989: Short in Transmission Fluid Pressure Switch E (6th Clutch) Circuit, or Transmission Fluid Pressure Switch E (6th Clutch) Stuck ON

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission. If DTC P0989 is stored in the PCM, the transmission does not shift to any gear other than 3rd or 6th gear because of the fail-safe function.

Scheme 121

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Check the 6th Pressure Switch signal with the HDS in the A/T Data List. Is the 6th Pressure Switch ON? YES -Go to step 4. NO -Intermittent failure, the system is OK at this time.
4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
5. Disconnect the transmission fluid pressure switch E (6th clutch) connector.
6. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
7. Check the 6th Pressure Switch signal with the HDS in the A/T Data List. Is the 6th Pressure Switch OFF? YES -Replace transmission fluid pressure switch E (6th clutch) (see «TRANSMISSION FLUID PRESSURE SWITCH E (6TH CLUTCH) REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ). NO -Go to step 8.
8. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
9. Jump the SCS line with the HDS.
10. Disconnect PCM connector C (49P).
11. Check for continuity between PCM connector terminal C31 and body ground. Is there continuity? YES -Repair a short to body ground in the wire between PCM connector terminal C31 and the transmission fluid pressure switch E (6th clutch) connector terminal. NO -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ).

DTC P0990: Open in Transmission Fluid Pressure Switch E (6th Clutch) Circuit, or Transmission Fluid Pressure Switch E (6th Clutch) Stuck OFF

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). If DTC P0990 is stored in the PCM, the transmission does not shift to any gear other than 3rd or 6th gear because of the fail-safe function.

Scheme 122

Scheme 123

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Raise the vehicle on a lift, make sure it is securely supported, and allow all wheels to rotate freely.
4. Start the engine, disable the VSA by pressing the VSA OFF button. Run the vehicle with the sequential sportshift mode in 6th gear. Check the 6th Pressure Switch signal with the HDS in the A/T Data List. Slow down, and stop the wheels. Is the 6th Pressure Switch ON in 6th gear? YES -Intermittent failure, the system is OK at this time. Check for poor connections and loose terminals between transmission fluid pressure switch E (6th clutch) and the PCM. NO -Go to step 5.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Disconnect the transmission fluid pressure switch E (6th clutch) connector.
7. Connect a jumper wire between the transmission fluid pressure switch E (6th clutch) connector terminal and body ground.
8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
9. Check the 6th Pressure Switch signal with the HDS in the A/T Data List. Is the 6th Pressure Switch ON? YES -Replace transmission fluid pressure switch E (6th clutch) (see «TRANSMISSION FLUID PRESSURE SWITCH E (6TH CLUTCH) REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ). NO -Go to step 10.
10. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
11. Remove the jumper wire.
12. Jump the SCS line with the HDS.
13. Disconnect PCM connector C (49P).
14. Check for continuity between PCM connector terminal C31 and the transmission fluid pressure switch E (6th clutch) connector terminal. Is there continuity? YES -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). NO -Repair an open in the wire between PCM connector terminal C31 and the transmission fluid pressure switch E (6th clutch) connector terminal.

DTC P16C0: PCM A/T Control System Incomplete Update

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is indicated when PCM updating is incomplete. Do not turn the ignition switch to LOCK (0) or ACCESSORY (I), or do not press the engine start/stop button, while updating the PCM. If you do before completion, the PCM can be damaged.

1. Update the PCM (see «PCM UPDATE»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-update) ).
2. Check for Pending or Confirmed DTCs with the HDS. Is DTC P16C0 indicated? YES -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). NO -PCM updating is complete.

DTC P1717: Open in Transmission Range Switch ATPRVS Switch Circuit

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

Scheme 124

Scheme 125

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Shift to R, and check the Reverse Switch (ATPRVS) signal with the HDS. Is the Reverse Switch (ATPRVS) ON? YES -Intermittent failure, the system is OK at this time. NO -Go to step 3.
3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
4. Disconnect the transmission range switch connector.
5. Connect a jumper wire between the transmission range switch connector terminal No. 1 and body ground.
6. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
7. Check the Reverse Switch (ATPRVS) signal with the HDS. Is the Reverse Switch (ATPRVS) ON? YES -Replace the transmission range switch (see «TRANSMISSION RANGE SWITCH REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ). NO -Go to step 8.
8. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
9. Remove the jumper wire.
10. Jump the SCS line with the HDS.
11. Disconnect PCM connector C (49P).
12. Check for continuity between PCM connector terminal C19 and transmission range switch connector terminal No. 1. Is there continuity? YES -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). NO -Repair an open in the wire between PCM connector terminal C19 and transmission range switch connector terminal No.

DTC P177A: Line Pressure Solenoid Valve A Stuck OFF, or Line Pressure Switch Stuck OFF

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 126

Scheme 127

Scheme 128

1. Warm up the engine to normal operating temperature (the radiator fan comes on).
2. Make sure that the transmission is filled to the proper level, and check for fluid leaks.
3. Drain the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ) through a strainer. Inspect the strainer for metal debris or excessive clutch material. Does the strainer have metal debris or excessive clutch material? YES -Replace the transmission. NO -Replace the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ), then go to step 4.
4. Raise the vehicle on a lift, make sure it is securely supported, and allow all four wheels to rotate freely.
5. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
6. Clear the DTC with the HDS.
7. Start the engine. With the brake pedal pressed, shift to D, then release the brake pedal.
8. Monitoring the APP Sensor (%) with the HDS in the A/T Data List, press (2 % opened) and release (0 % opened) the accelerator pedal every 2 seconds. Then check the Line Pressure Sol VLV. A signal and the Line Pressure Pressure Switch signal with the HDS in the A/T Data List. Is the Line Pressure Pressure Switch ON when Line Pressure Sol VLV. A is ON, and OFF when Line Pressure Sol VLV. A is OFF? YES -Intermittent failure, the system is OK at this time. Check for poor connections and loose terminals between the line pressure switch and the PCM. NO -Go to step 9.
9. Select Line Pressure Solenoid A in the Miscellaneous Test Menu, and check that line pressure solenoid valve A operates with the HDS. Is a clicking sound heard? YES -Go to step 16 . NO -Go to step 10.
10. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
11. Check for a blown No. 13 (15 A) fuse in the driver's under-dash fuse/relay box. Is the No. 13 (15 A) fuse OK? YES -Go to step 12. NO -Repair a short to body ground in the wire between PCM connector terminal B2 and the driver's under-dash fuse/relay box.
12. Jump the SCS line with the HDS.
13. Disconnect PCM connector B (49P).
14. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
15. Measure the voltage between PCM connector terminal B2 and body ground. Is there battery voltage? YES -Faulty line pressure solenoid valve A. Replace the secondary valve body (line pressure solenoid valve A) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ). NO -Repair an open in the wire between PCM connector terminal B2 and the driver's under-dash fuse/relay box.
16. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
17. Disconnect the line pressure switch connector.
18. Connect a jumper wire between the line pressure switch connector terminal and body ground.
19. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
20. Check the Line Pressure Pressure Switch signal with the HDS in the A/T Data List. Is the Line Pressure Pressure Switch ON? YES -Replace the line pressure switch (see «LINE PRESSURE SWITCH REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ). NO -Go to step 21.
21. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
22. Remove the jumper wire.
23. Jump the SCS line with the HDS.
24. Disconnect PCM connector C (49P).
25. Check for continuity between PCM connector terminal C35 and the line pressure switch connector terminal. Is there continuity? YES -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). NO -Repair an open in the wire between the line pressure switch connector terminal and PCM connector terminal C35.

DTC P2714: A/T Clutch Pressure Control Solenoid Valve D Stuck OFF

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ).

1. Warm up the engine to normal operating temperature (the radiator fan comes on).
2. Make sure that the transmission is filled to the proper level, and check for fluid leaks.
3. Drain the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ) through a strainer. Inspect the strainer for metal debris or excessive clutch material. Does the strainer have metal debris or excessive clutch material? YES -Replace the transmission. NO -Replace the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ), then go to step 4.
4. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
5. Clear the DTC with the HDS.
6. Start the engine.
7. With the brake pedal pressed, shift to D, and check the A/T Shift Sol VLV. B signal, the Input Shaft (Mainshaft) Speed, and the Shift Control with the HDS in the A/T Data List. Does the Input Shaft (Mainshaft) Speed remain steady when A/T Shift Sol VLV. B is OFF, and does the Input Shaft (Mainshaft) Speed read 0 rpm when A/T Shift Sol VLV. B is ON? YES -Go to step 8. NO -Intermittent failure, the system is OK at this time.
8. Clear the DTC with the HDS.
9. Select Clutch Pressure Control (Linear) Solenoid Valve D in the Miscellaneous Test Menu, and test A/T clutch pressure control solenoid valve D with the HDS. Does the HDS indicate NORMAL? YES -Faulty lock-up shift valve. Replace the main valve body (lock-up shift valve) or the transmission. If you are replacing the main valve body, clean off any metal debris or excessive clutch material inside the transmission, the torque converter, the ATF cooler, the ATF hoses, the ATF pipes, and the hydraulic circuit. Then, replace the main valve body. NO -Faulty A/T clutch pressure control solenoid valve D. Replace the secondary valve body (A/T clutch pressure control solenoid valve D) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).

DTC P2720: Problem in A/T Clutch Pressure Control Solenoid Valve D Circuit

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission. If DTC P2720 is stored in the PCM, the transmission does not shift to 2nd or 5th gear because of the fail-safe function.

Scheme 129

Scheme 130

Scheme 131

Scheme 132

Scheme 133

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Check for Pending or Confirmed DTCs with the HDS. Is DTC P2720 indicated? YES -Go to step 4. NO -Intermittent failure, the system is OK at this time. Check for poor connections and loose terminals between A/T clutch pressure control solenoid valve D and the PCM.
4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
5. Jump the SCS line with the HDS.
6. Disconnect PCM connector B (49P).
7. Check for continuity between PCM connector terminal B43 and body ground. Is there continuity? YES -Go to step 8. NO -Go to step 10 .
8. Disconnect the A/T clutch pressure control solenoid valve D connector.
9. Check for continuity between A/T clutch pressure control solenoid valve D connector terminal No. 1 and body ground. Is there continuity? YES -Repair a short to body ground in the wire between PCM connector terminal B43 and A/T clutch pressure control solenoid valve D connector terminal No. 1. NO -Faulty A/T clutch pressure control solenoid valve D. Replace the secondary valve body (A/T clutch pressure control solenoid valve D) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
10. Disconnect the A/T clutch pressure control solenoid valve D connector.
11. Check for continuity between PCM connector terminal B43 and A/T clutch pressure control solenoid valve D connector terminal No. 1. Is there continuity? YES -Go to step 12. NO -Repair an open in the wire between A/T clutch pressure control solenoid valve D connector terminal No. 1 and PCM connector terminal B43.
12. Check for continuity between A/T clutch pressure control solenoid valve D connector terminal No. 2 and body ground. Is there continuity? YES -Go to step 13. NO -Repair an open in the wire between A/T clutch pressure control solenoid valve D connector terminal No. 2 and body ground (G101) (see «CONNECTOR TO FUSE/RELAY BOX INDEX»(/acura/zdx/i-2009-2013/remont/body-electrical/#fuserelay-boxes__connector-to-fuserelay-box-index) ), or repair poor body ground (G101).
13. Check for continuity between A/T clutch pressure control solenoid valve D connector terminals No. 1 and No. 2. Is there continuity? YES -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). NO -Faulty A/T clutch pressure control solenoid valve D. Replace the secondary valve body (A/T clutch pressure control solenoid valve D) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).

DTC P2721: Problem in A/T Clutch Pressure Control Solenoid Valve D

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission. If DTC P2721 is stored in the PCM, the transmission does not shift to 2nd or 5th gear because of the fail-safe function.

Scheme 134

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Check for Pending or Confirmed DTCs with the HDS. Is DTC P2721 indicated? YES -Go to step 4. NO -Intermittent failure, the system is OK at this time.
4. Check the A/T C.P.C. Sol VLV. D Actual command with the HDS in the A/T Data List. Is there 35 mA or more? YES -Go to step 5. NO -Faulty A/T clutch pressure control solenoid valve D. Replace the secondary valve body (A/T clutch pressure control solenoid valve D) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Jump the SCS line with the HDS.
7. Disconnect PCM connector B (49P).
8. Check for continuity between: PCM connector terminal B1 and body ground. PCM connector terminal B40 and body ground. Is there continuity? YES -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). NO -Repair an open in the wires between: PCM connector terminal B1 and body ground (G101) (see «CONNECTOR TO FUSE/RELAY BOX INDEX»(/acura/zdx/i-2009-2013/remont/body-electrical/#fuserelay-boxes__connector-to-fuserelay-box-index) ), or repair poor body ground (G101). PCM connector terminal B40 and body ground (G101) (see «CONNECTOR TO FUSE/RELAY BOX INDEX»(/acura/zdx/i-2009-2013/remont/body-electrical/#fuserelay-boxes__connector-to-fuserelay-box-index) ), or repair poor body ground (G101).

DTC P2821: Line Pressure Solenoid Valve A Stuck ON

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). If DTC P2821 is stored in the PCM, engine torque is restricted because of the fail-safe function.

1. Warm up the engine to normal operating temperature (the radiator fan comes on).
2. Make sure that the transmission is filled to the proper level, and check for fluid leaks.
3. Drain the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ) through a strainer. Inspect the strainer for metal debris or excessive clutch material. Does the strainer have metal debris or excessive clutch material? YES -Replace the transmission. NO -Replace the ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ), then go to step 4.
4. Raise the vehicle on a lift, make sure it is securely supported, and allow all four wheels to rotate freely.
5. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
6. Clear the DTC with the HDS.
7. Start the engine. With the brake pedal pressed, shift to D, then release the brake pedal.
8. Monitoring the APP Sensor (%) with the HDS in the A/T Data List, press (2 % opened) and release (0 % opened) the accelerator pedal every 2 seconds. Then check the Line Pressure Sol VLV. A signal and the Line Pressure Pressure Switch signal with the HDS in the A/T Data List. Is the Line Pressure Pressure Switch ON when Line Pressure Sol VLV. A is ON, and OFF when Line Pressure Sol VLV. A is OFF? YES -Intermittent failure, the system is OK at this time. NO -Faulty line pressure solenoid valve A. Replace the secondary valve body (line pressure solenoid valve A) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).

DTC P2826: Short in Line Pressure Solenoid Valve A Circuit

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

Scheme 135

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Raise the vehicle on a lift, make sure it is securely supported, and allow all four wheels to rotate freely.
4. Start the engine. With the brake pedal pressed, shift to D, then release the brake pedal.
5. Monitoring the APP Sensor (%) with HDS in the A/T Data List, press (2 % opened) and release (0 % opened) the accelerator pedal every 2 seconds.
6. Check for Pending or Confirmed DTCs with the HDS. Is DTC P2826 indicated? YES -Go to step 7. NO -Intermittent failure, the system is OK at this time. Check for poor connections and loose terminals between line pressure solenoid valve A and the PCM.
7. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
8. Disconnect the line pressure solenoid valve A connector.
9. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
10. Clear the DTC with the HDS.
11. Start the engine. With the brake pedal pressed, shift to D, then release the brake pedal.
12. Monitoring the APP Sensor (%) with HDS in the A/T Data List, press (2 % opened) and release (0 % opened) the accelerator pedal every 2 seconds.
13. Check for Pending or Confirmed DTCs with the HDS. Is DTC P2826 indicated? YES -Go to step 14. NO -Faulty line pressure solenoid valve A. Replace the secondary valve body (line pressure solenoid valve A) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
14. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
15. Jump the SCS line with the HDS.
16. Disconnect PCM connector B (49P).
17. Check for continuity between PCM connector terminal B44 and body ground. Is there continuity? YES -Repair a short to body ground in the wire between PCM connector terminal B44 and line pressure solenoid valve A connector terminal No. 2. NO -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ).

DTC P2827: Open in Line Pressure Solenoid Valve A Circuit

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

Scheme 136

Scheme 137

Scheme 138

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Start the engine in P, and wait for at least 1 second.
4. Check for Pending or Confirmed DTCs with the HDS. Is DTC P2827 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for poor connections and loose terminals between line pressure solenoid valve A and the PCM.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Disconnect the line pressure solenoid valve A connector.
7. Connect a jumper wire between line pressure solenoid valve A connector terminal No. 2 and body ground.
8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
9. Clear the DTC with the HDS.
10. Raise the vehicle on a lift, make sure it is securely supported, and allow all four wheels to rotate freely.
11. Start the engine. With the brake pedal pressed, shift to D, then release the brake pedal.
12. Monitoring the APP Sensor (%) with HDS in the A/T Data List, press (2 % opened) and release (0 % opened) the accelerator pedal every 2 seconds.
13. Check for Pending or Confirmed DTCs with the HDS. Is DTC P2826 indicated? YES -Go to step 14. NO -Go to step 17 .
14. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
15. Remove the jumper wire.
16. Check for continuity between line pressure solenoid valve A connector terminal No. 1 and body ground. Is there continuity? YES -Faulty line pressure solenoid valve A. Replace the secondary valve body (line pressure solenoid valve A) (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ). NO -Repair an open in the wire between line pressure solenoid valve A connector terminal No. 1 and body ground (G101) (see «CONNECTOR TO FUSE/RELAY BOX INDEX»(/acura/zdx/i-2009-2013/remont/body-electrical/#fuserelay-boxes__connector-to-fuserelay-box-index) ), or repair poor body ground (G101).
17. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
18. Remove the jumper wire.
19. Jump the SCS line with the HDS.
20. Disconnect PCM connector B (49P).
21. Check for continuity between PCM connector terminal B44 and line pressure solenoid valve A connector terminal No. 2. Is there continuity? YES -Replace the PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). NO -Repair an open in the wire between PCM connector terminal B44 and line pressure solenoid valve A connector terminal No. 2.

DTC U0029: F-CAN Communication Circuit Error (F-CAN Bus OFF)

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Check for Pending or Confirmed DTCs in the PGM-FI SYSTEM with the HDS. Is DTC U0029 indicated in the PGM-FI SYSTEM? YES -Go to the DTC U0029 troubleshooting in the PGM-FI SYSTEM (see «DTC TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/communication-devices/#communication-systems-f-can-k-line) ). NO -Go to step 4.
4. Check for Pending or Confirmed DTCs in the ATT SYSTEM with the HDS. Is DTC U0029 indicated in the A/T SYSTEM? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. If any other Pending or Confirmed DTCs or DTCs were indicated, go to the indicated «DTC'S TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) .
5. Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ).
6. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, and wait for at least 2 minutes.
7. Check for Pending or Confirmed DTCs in the A/T SYSTEM with the HDS. Is DTC U0029 indicated in the A/T SYSTEM? YES -Check for poor connections or loose terminals at the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ), then go to step 2 . If the PCM was substituted, go to step 6 . NO -Go to step 8.
8. Monitor the OBD STATUS for U0029 in the DTCs MENU with the HDS. Does the HDS indicate PASSED? YES -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). If any other Pending or Confirmed DTCs or DTCs were indicated in step 7 , go to the indicated «DTC'S TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) . NO -If the HDS indicates FAILED, check for poor connections or loose terminals at the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ), then go to step 6 . If the PCM was substituted, go to step 6 . If the HDS indicates NOT COMPLETED, go to step 2 .

DTC U0104: Lost Communication with Adaptive Cruise Control (ACC) Unit-PCM

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Check for Pending or Confirmed DTCs in the PGM-FI SYSTEM with the HDS. Is DTC U0104 indicated in the PGM-FI SYSTEM? YES -Go to the DTC U0104 troubleshooting in the PGM-FI SYSTEM (see «DTC U0104: F-CAN A MALFUNCTION (PCM-ADAPTIVE CRUISE CONTROL (ACC) UNIT)»(/acura/zdx/i-2009-2013/remont/communication-devices/#communication-systems-f-can-k-line__dtc-u0104-f-can-a-malfunction-pcm-adaptive) ). NO -Go to step 4.
4. Check for Pending or Confirmed DTCs in the A/T SYSTEM with the HDS. Is DTC U0104 indicated in the A/T SYSTEM? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. If any other Pending or Confirmed DTCs were indicated, go to the indicated «DTC'S TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) .
5. Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ).
6. Start the engine, and wait for at least 2 minutes.
7. Check for Pending or Confirmed DTCs in the A/T SYSTEM with the HDS. Is DTC U0104 indicated in the A/T SYSTEM? YES -Check for poor connections or loose terminals between the adaptive cruise control (ACC) unit and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ), then go to step 6 . If the PCM was substituted, go to step 2 . NO -Go to step 8.
8. Monitor the OBD STATUS for U0104 in the DTCs MENU with the HDS. Does the HDS indicate PASSED? YES -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). If any other Pending or Confirmed DTCs or DTCs were indicated in step 7 , go to the indicated «DTC'S TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) . NO -If the HDS indicates FAILED, check for poor connections or loose terminals between the adaptive cruise control (ACC) unit and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ), then go to step 6 . If the PCM was substituted, go to step 2 . If the HDS indicates NOT COMPLETED, go to step 6 .

DTC U0122: Lost Communication with VSA Modulator-Control Unit

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Check for Pending or Confirmed DTCs in the PGM-FI SYSTEM with the HDS. Is DTC U0122 indicated in the PGM-FI SYSTEM? YES -Go to the DTC U0122 troubleshooting in the PGM-FI SYSTEM (see «DTC U0122: F-CAN A MALFUNCTION (PCM-VSA MODULATOR-CONTROL UNIT)»(/acura/zdx/i-2009-2013/remont/communication-devices/#communication-systems-f-can-k-line__dtc-u0122-f-can-a-malfunction-pcm-vsa) ). NO -Go to step 4.
4. Check for Pending or Confirmed DTCs in the A/T SYSTEM with the HDS. Is DTC U0122 indicated in the A/T SYSTEM? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. If any other Pending or Confirmed DTCs were indicated, go to the indicated «DTC'S TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) .
5. Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ).
6. Start the engine, and wait for at least 2 minutes.
7. Check for Pending or Confirmed DTCs in the A/T SYSTEM with the HDS. Is DTC U0122 indicated in the A/T SYSTEM? YES -Check for poor connections or loose terminals between the VSA modulator-control unit and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ), then go to step 6 . If the PCM was substituted, go to step 2 . NO -Go to step 8.
8. Monitor the OBD STATUS for U0122 in the DTCs MENU with the HDS. Does the HDS indicate PASSED? YES -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). If any other Pending or Confirmed DTCs or DTCs were indicated in step 7 , go to the indicated «DTC'S TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) . NO -If the HDS indicates FAILED, check for poor connections or loose terminals between the VSA modulator-control unit and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ), then go to step 6 . If the PCM was substituted, go to step 2 . If the HDS indicates NOT COMPLETED, go to step 6 .

DTC U0155: Lost Communication with Gauge Control Module

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ). This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Clear the DTC with the HDS.
3. Check for Pending or Confirmed DTCs in the PGM-FI SYSTEM with the HDS. Is DTC U0155 indicated in the PGM-FI SYSTEM? YES -Go to the DTC U0155 troubleshooting in the PGM-FI SYSTEM (see «DTC U0155: F-CAN A MALFUNCTION (PCM-GAUGE CONTROL MODULE)»(/acura/zdx/i-2009-2013/remont/communication-devices/#communication-systems-f-can-k-line__dtc-u0155-f-can-a-malfunction-pcm-gauge) ). NO -Go to step 4.
4. Check for Pending or Confirmed DTCs in the A/T SYSTEM with the HDS. Is DTC U0155 indicated in the A/T SYSTEM? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. If any other Pending or Confirmed DTCs or DTCs were indicated, go to the indicated «DTC'S TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) .
5. Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ).
6. Start the engine, and wait for at least 2 minutes.
7. Check for Pending or Confirmed DTCs in the A/T SYSTEM with the HDS. Is DTC U0155 indicated in the A/T SYSTEM? YES -Check for poor connections or loose terminals between the gauge control module and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ), then go to step 6 . If the PCM was substituted, go to step 2 . NO -Go to step 8.
8. Monitor the OBD STATUS for U0155 in the DTCs MENU with the HDS. Does the HDS indicate PASSED? YES -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). If any other Pending or Confirmed DTCs were indicated in step 7 , go to the indicated «DTC'S TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) . NO -If the HDS indicates FAILED, check for poor connections or loose terminals between the gauge control module and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ), then go to step 6 . If the PCM was substituted, go to step 2 . If the HDS indicates NOT COMPLETED, go to step 6 .

Scheme 139

1. Warm up the engine to normal operating temperature (the radiator fan comes on).
2. Apply the parking brake, and block all four wheels. Start the engine, then shift to D while pressing the brake pedal. Press the accelerator pedal, and release it suddenly. The engine should not stall.
3. Repeat step 2 in all shift lever positions.
4. Connect the HDS to the DLC (A) located under the driver's side of the dashboard.
5. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
6. Make sure the HDS communicates with the PCM, and go to the A/T Data List. If it does not, go to the DLC circuit troubleshooting (see «DLC CIRCUIT TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/communication-devices/#communication-systems-f-can-k-line__dlc-circuit-troubleshooting) ).
7. Prepare the HDS to take a HIGH SPEED SNAPSHOT (refer to the HDS user's guide for more details if needed): Select the High Speed icon. Select these parameters: Vehicle Speed Output Shaft (Countershaft) Speed (rpm) Input Shaft (Mainshaft) Speed (rpm) Engine Speed TP Sensor APP Sensor A (V) ETR-Battery Voltage Shift Control Brake Switch Set the Trigger Type to Parameter. Adjust the Parameter setting to APP Sensor A above 1.11V. Set the Record Time to 60 seconds. Set the Trigger Point to (Negative) -30 seconds.
8. Find a suitable level road. When you are ready to do the test, press OK on the HDS.
9. Accelerate quickly until APP Sensor A reads 1.21 V. Maintain a steady throttle until the transmission shifts to 6th gear, then slow the vehicle and come to a stop.
10. Save the snapshot if the entire event was recorded or increase the recording time setting as necessary, and repeat step 9 .
11. Adjust the parameter setting to 2.18 V. Test-drive the vehicle again. Accelerate quickly until APP Sensor A reads 2.28 V. Maintain a steady throttle until the transmission shifts to 6th gear (or a reasonable speed), then slow the vehicle and come to a stop.
12. Save the snapshot if the entire event was recorded or increase the recording time setting as necessary, and repeat step 11 .
13. Accelerate quickly until the accelerator pedal is to the floor. Maintain a steady pedal until the transmission shifts to 5th gear, then slow to a stop, and save the snapshot.
14. Review each snapshot individually, and compare the Shift Control, APP Sensor A (V), and the Vehicle Speed to the following table: UPSHIFT: D POSITION APP sensor A (V): 1.21 V 1st-->2nd 6-7 mph (10-12 km/h) 2nd-->3rd 11-14 mph (18-22 km/h) 3rd-->4th 20-22 mph (32-36 km/h) 4th-->5th 27-31 mph (44-50 km/h) 5th-->6th 40-43 mph (64-70 km/h) Lock-up ON 2-5 mph (4-8 km/h) APP sensor A (V): 2.28 V 1st-->2nd 14-16 mph (23-27 km/h) 2nd-->3rd 26-29 mph (42-48 km/h) 3rd-->4th 38-41 mph (61-67 km/h) 4th-->5th 53-56 mph (85-91 km/h) 5th-->6th 75-78 mph (121-127 km/h) Lock-up ON 4-6 mph (6-10 km/h) Fully-opened throttle APP sensor A (V): 4.42 V 1st-->2nd 34-37 mph (54-60 km/h) 2nd-->3rd 57-60 mph (92-98 km/h) 3rd-->4th 81-84 mph (130-136 km/h) 4th-->5th 113-116 mph (182-188 km/h) Lock-up ON 9-13 mph (15-21 km/h) DOWNSHIFT: D POSITION APP sensor A (V): 1.21 V Lock-up OFF 1-3 mph (2-6 km/h) 6th-->5th 37-41 mph (60-66 km/h) 5th-->4th 25-28 mph (40-46 km/h) 4th-->3rd 16-19 mph (26-30 km/h) 2nd-->1st 3-6 mph (5-9 km/h) APP sensor A (V): 2.28 V Lock-up OFF 1-3 mph (2-6 km/h) 6th-->5th 52-56 mph (84-90 km/h) 5th-->4th 37-40 mph (59-65 km/h) 4th-->3rd 24-27 mph (39-45 km/h) 3rd-->2nd 15-18 mph (24-30 km/h) 2nd-->1st 3-6 mph (5-9 km/h) Fully-opened throttle APP sensor A (V): 4.42 V Lock-up OFF 1-3 mph (2-6 km/h) 5th-->4th 99-103 mph (160-166 km/h) 4th-->3rd 71-74 mph (114-120 km/h) 3rd-->2nd 41-51 mph (77-83 km/h) 2nd-->1st 23-27 mph (37-43 km/h)
15. Drive the vehicle in 5th or 6th gear in S with the sequential sportshift mode, then decelerate and downshift to 2nd gear. The vehicle should immediately begin to slow down from the engine braking, then slow to a stop.
16. Shift to R, accelerate from a stop at to full throttle momentarily, and check for abnormal noise and clutch slippage.
17. Park the vehicle on an upward slope (about 16 degrees), apply the parking brake, and shift into P, Release the brake; the vehicle should not move.

Note. Always use the parking brake to hold the vehicle when stopped on an incline in gear. Depending on the grade of the incline, the vehicle could roll if the brake is released.

Scheme 140

1. Make sure the transmission fluid is filled to the proper level (see «ATF LEVEL CHECK»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-level-check) ).
2. Apply the parking brake, and block all four wheels.
3. Connect the HDS to the DLC (A) located under the driver's side of the dashboard.
4. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
5. Make sure the HDS communicates with the PCM, and go to the A/T Data List. If it does not, go to the DLC circuit troubleshooting (see «DLC CIRCUIT TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/communication-devices/#communication-systems-f-can-k-line__dlc-circuit-troubleshooting) ).
6. Make sure the A/C switch is OFF.
7. Start the engine, and warm it up to normal operating temperature (the radiator fan comes on).
8. Shift to D while pressing the brake pedal firmly, then press the accelerator pedal for 6 to 8 seconds, and note the engine speed. Do not move the shift lever or remove your foot off the brake pedal, while raising the engine speed.
9. Allow 2 minutes for cooling between test, then repeat the test with the shift lever in S and R. NOTE: Do not test stall speed for more than 10 seconds at a time. Record the engine speed at 6 to 8 seconds after pressing the accelerator pedal. Higher engine speed will be indicated for 5 seconds. Stall speed tests should be used for diagnostic purposes only. The stall speed should be the same in D, S, and R. Do not test stall speed with A/T pressure gauges installed. Stall Speed rpm: Specification: 2, 000 rpm Service Limit: 1, 800-2, 100 rpm
10. If any of the stall speeds are out of the service limit, refer to the problems and probable causes listed in the chart below. Problem Probable causes Stall speed rpm high in D, S, and R ATF pump output low Main regulator valve stuck Slipping clutch Stall speed rpm high in R Slippage of 4th clutch Stall speed rpm low in D, S, and R Engine output low Engine throttle valve closed Torque converter one-way clutch slipping

Pressure Test

Special Tools Required

1. A/T Oil Pressure Gauge Set 07406-0020400 or 07406-0020401
2. A/T Pressure Test Hose 07AAJ-PY4A100
3. A/T Pressure Adapter 07MAJ-PY40120
4. Pressure Gauge Adapter 070AJ-RT4A101

Note. Disable the VSA by pressing the VSA OFF button. VSA DTC (s) may come on during the test-drive. If the VSA DTC (s) come on, clear the DTC (s) after testing is done with the HDS.

Scheme 141

Scheme 142

Scheme 143

Scheme 144

Scheme 145

Scheme 146

Scheme 147

Scheme 148

Scheme 149

Scheme 150

Scheme 151

Scheme 152

Scheme 153

1. Make sure the transmission fluid is filled to the proper level (see «ATF LEVEL CHECK»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-level-check) ).
2. Raise the vehicle on a lift, and make sure it is securely supported.
3. Allow all four wheels to rotate freely.
4. Remove the engine undercover (A) and the front splash shield (B).
5. Connect the HDS to the DLC (A) located under the driver's side of the dashboard.
6. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
7. Make sure the HDS communicates with the PCM, and go to the A/T Data List. If it does not, go to the DLC circuit troubleshooting (see «DLC CIRCUIT TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/communication-devices/#communication-systems-f-can-k-line__dlc-circuit-troubleshooting) ).
8. Connect the A/T pressure adapter to the ATT pressure test hose, then connect the A/T pressure test hose to the A/T oil pressure gauge set.
9. When testing the oil pressure at each inspection port, select a suitable adapter from the following table, and connect each adapter to the pressure gauge assembled in step 8 . Tool Connect to Pressure gauge adapter A and E 2nd clutch pressure 4th clutch pressure Pressure gauge adapter B 1st clutch pressure 5th clutch pressure Torque converter clutch pressure Pressure gauge adapter C Line pressure Pressure gauge adapter D 3rd clutch pressure 6th clutch pressure PRESSURE GAUGE ADAPTER 070AJ-RT4A101
10. Install pressure gauge adapter C to the line pressure inspection port (A). Do not allow dust or other foreign particles to enter the port while connecting pressure gauge adapter C. Connect the A/T pressure adapter to pressure gauge adapter C.
11. Start the engine in P, and warm it up to normal operating temperature (ATF temperature between 122°F and 212°F (50°C and 100°C)).
12. Move the shift lever to D.
13. Measure the low line pressure when the APP sensor opening less than 18 % with the HDS in the A/T Data List.
14. Measure the normal line pressure while holding the engine speed at 2, 000 rpm with the shift lever in P or N. NOTE: When measuring the normal line pressure, do not measure with the shift lever in other than P or N. Line Pressure Fluid Pressure Standard Service Limit Low 667-716 kPa (6.80-7.30 kgf/cm 2 , 96.7 -103.8 psi) Lower limit: 618 kPa (6.30 kgf/cm 2 , 89.6 psi) Upper limit: 765 kPa (7.80 kgf/cm 2 , 111.0 psi) Normal 1, 122-1, 172 kPa (11.44-11.95 kgf/cm 2 , 162.7-170.0 psi) 1, 079 kPa (11.00 kgf/cm 2 , 156.5 psi)
15. Turn the engine off, then disconnect pressure gauge adapter C from the line pressure inspection port.
16. Install a new sealing bolt to the line pressure inspection port, and tighten the bolt to 20 N.m (2.0 kgf.m, 15 lbf.ft). Do not reuse the old sealing bolt.
17. Remove the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system) ).
18. Remove the intake air duct (A). NOTE: When installing the intake air duct, tighten the screw of the hose clamp (B) aligning the edge of the hose clamp (C) with the painted mark (D).
19. Install pressure gauge adapter B to the 1st clutch pressure inspection port (A) and the 5th clutch pressure inspection port (C), then connect the A/T pressure adapter to pressure gauge adapter B.
20. Disconnect the transmission fluid pressure switch A (2nd clutch) connector, and remove transmission fluid pressure switch A (2nd clutch).
21. Install transmission fluid pressure switch A (2nd clutch) (B) and the washer (C) to pressure gauge adapter A, then connect the A/T pressure adapter to pressure gauge adapter A.
22. Install pressure gauge adapter E (quick connector) to the 2nd clutch pressure inspection port (B), then connect pressure gauge adapter A to pressure gauge adapter E (quick connector). Connect the transmission fluid pressure switch A (2nd clutch) connector to transmission fluid pressure switch A (2nd clutch).
23. Temporarily install the intake air duct and the air cleaner.
24. Start the engine, and run the vehicle with the sequential sportshift mode in 1st and 2nd gears.
25. Measure the 1st and 2nd clutch pressures when the APP sensor opening 20 % or more by quickly pressing on the accelerator pedal with the HDS in the A/T Data List. NOTE: Do not press on the accelerator pedal slowly.
26. Upshift to 5th gear by pressing the paddle shifter + (upshift switch), and measure the 5th clutch pressure when the APP sensor opening 20 % or more by quickly pressing on the accelerator pedal with the HDS in the A/T Data List. NOTE: Do not press on the accelerator pedal slowly. Pressure Fluid Pressure Standard Service Limit 1st clutch 2nd clutch 5th clutch 1, 122-1, 172 kPa (11.44-11.95 kgf/cm 2 , 162.7-170.0 psi) 1, 079 kPa (11.00 kgf/cm 2 , 156.5 psi)
27. Turn the engine off, remove the intake air duct and the air cleaner.
28. Disconnect the transmission fluid pressure switch A (2nd clutch) connector from transmission fluid pressure switch A (2nd clutch). Disconnect the pressure gauge adapters from the 1st, 2nd, and 5th clutch pressure inspection ports.
29. Remove transmission fluid pressure switch A (2nd clutch) form pressure gauge adapter A.
30. Install transmission fluid pressure switch A (2nd clutch) and a new sealing washer, and tighten transmission fluid pressure switch A (2nd clutch) to 20 N.m (2.0 kgf.m, 15 lbf.ft). Do not reuse the old sealing washer.
31. Connect the transmission fluid pressure switch A (2nd clutch) connector.
32. Install new sealing bolts in the 1st and 5th clutch pressure inspection ports, and tighten the sealing bolts to 20 N.m (2.0 kgf.m, 15 lbf.ft). Do not reuse the old sealing bolts.
33. Install pressure gauge adapter D to the 3rd pressure inspection port (A) and the 6th pressure inspection port (B), then connect the A/T pressure adapter to pressure gauge adapter D.
34. Disconnect the transmission fluid pressure switch C (4th clutch) connector, and remove transmission fluid pressure switch C (4th clutch).
35. Install transmission fluid pressure switch C (4th clutch) (B) and the washer (C) to pressure gauge adapter A, then connect the A/T pressure adapter to pressure gauge adapter A.
36. Install pressure gauge adapter E (quick connector) to the 4th clutch pressure inspection port (B), then connect pressure gauge adapter A to pressure gauge adapter E (quick connector). Connect the transmission fluid pressure switch C (4th clutch) connector to transmission fluid pressure switch C (4th clutch).
37. Temporarily install the intake air duct and the air cleaner.
38. Start the engine, and run the vehicle with the sequential sportshift mode in 3rd gear.
39. Measure the 3rd clutch pressure when the APP sensor opening 20 % or more by quickly pressing on the accelerator pedal with the HDS in the A/T Data List. NOTE: Do not press on the accelerator pedal slowly.
40. Upshift to 4th gear by pressing the paddle shifter + (upshift switch), and measure the 4th clutch pressure when the APP sensor opening 20 % or more by quickly pressing on the accelerator pedal with the HDS in the A/T Data List. NOTE: Do not press on the accelerator pedal slowly.
41. Upshift to 6th gear by pressing the paddle shifter + (upshift switch), and measure the 6th clutch pressure when the APP sensor opening 20 % or more by quickly pressing on the accelerator pedal with the HDS in the A/T Data List. NOTE: Do not press on the accelerator pedal slowly. Pressure Fluid Pressure Standard Service Limit 3rd clutch 4th clutch 6th clutch 1, 122-1, 172 kPa (11.44-11.95 kgf/cm 2 , 162.7-170.0 psi) 1, 079 kPa (11.00 kgf/cm 2 , 156.5 psi)
42. Bring the engine back to an idle, then apply the brake pedal to stop the wheels from rotating.
43. Shift to R, then release the brake pedal. Measure the 4th clutch pressure when the APP sensor opening 20 % or more by quickly pressing on the accelerator pedal with the HDS in the A/T Data List. NOTE: Do not press on the accelerator pedal slowly. Pressure Fluid Pressure Standard Service Limit 4th clutch in R 1, 122-1, 172 kPa (11.44-11.95 kgf/cm 2 , 162.7-170.0 psi) 1, 079 kPa (11.00 kgf/cm 2 , 156.5 psi)
44. Turn the engine off, then remove the intake air duct and the air cleaner.
45. Disconnect the transmission fluid pressure switch C (4th clutch) connector. Disconnect the pressure gauge adapters from the 3rd, 4th, and 6th clutch pressure inspection ports.
46. Remove transmission fluid pressure switch C (4th clutch) from pressure gauge adapter A.
47. Install transmission fluid pressure switch C (4th clutch) and a new sealing washer, and tighten transmission fluid pressure switch C (4th clutch) to 20 N.m (2.0 kgf.m, 15 lbf.ft). Do not reuse the old sealing washer.
48. Connect the transmission fluid pressure switch C (4th clutch) connector.
49. Install new sealing bolts in the 3rd and 6th clutch pressure inspection ports, and tighten the sealing bolts to 27 N.m (2.8 kgf.m, 20 lbf.ft). Do not reuse the old sealing bolts.
50. Install the intake air duct.
51. Install the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system) ).
52. Install pressure gauge adapter B to the torque converter clutch pressure inspection port (A), then connect the A/T pressure adapter to pressure gauge adapter B.
53. Start the engine, and run the vehicle with sequential sportshift mode in 2nd gear.
54. Measure the torque converter clutch pressure while holding the engine speed at 4, 000 rpm. Pressure Fluid Pressure Standard Service Limit Torque converter clutch pressure 294 kPa (3.00 kgf/cm 2 , 42.7 psi) 245 kPa (2.50 kgf/cm 2 , 35.6 psi)
55. Turn the engine off, then disconnect pressure gauge adapter B from the torque converter clutch pressure inspection port.
56. Install a new sealing bolt to the torque converter clutch pressure inspection port, and tighten the sealing bolt to 20 N.m (2.0 kgf.m, 15 lbf.ft). Do not reuse the old sealing bolt.
57. If any of the pressures are out of the service limit, refer to the problems and probable causes listed in the chart. Problem Probable causes No or low line pressure Torque converter ATF pump Main regulator valve Clogged ATF strainer No or low 1st clutch pressure 1st clutch No or low 2nd clutch pressure 2nd clutch No or low 3rd clutch pressure 3rd clutch No or low 4th clutch pressure 4th clutch No or low 5th clutch pressure 5th clutch No or low 6th clutch pressure 6th clutch No or low 4th clutch pressure in R Shift fork shaft 4th clutch No or low torque converter clutch pressure Lock-up control valve Lock-up shift valve Shift solenoid valve C
58. Install the front splash shield and the engine undercover.

Scheme 154

Scheme 155

Scheme 156

Scheme 157

Scheme 158

Scheme 159

Scheme 160

Scheme 161

Scheme 162

Scheme 163

Scheme 164

Scheme 165

Scheme 166

Scheme 167

Scheme 168

Scheme 169

Scheme 170

1. Do the battery removal procedure (see «BATTERY REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/body-electrical/#battery) ).
2. Remove the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system) ).
3. Remove the intake air duct (see step 8 on TRANSMISSION REMOVAL ).
4. Remove the battery heat shield (see step 9 on TRANSMISSION REMOVAL ).
5. Remove the auxiliary under-hood fuse/relay box (see step 10 on TRANSMISSION REMOVAL ).
6. Remove the battery base (see step 11 on TRANSMISSION REMOVAL ).
7. Remove the ATF dipstick and the starter (see step 16 on TRANSMISSION REMOVAL ).
8. Disconnect these connectors: Shift solenoid valve A connector (A) Shift solenoid valve B connector (B) Shift solenoid valve C connector (C) Line pressure solenoid valve A connector (D)
9. Remove the harness clamps (E).
10. Disconnect these connectors: A/T clutch pressure control solenoid valve A connector (A) A/T clutch pressure control solenoid valve B connector (B) A/T clutch pressure control solenoid valve C connector (C) A/T clutch pressure control solenoid valve D connector (D) Transmission fluid pressure switch B (3rd clutch) connector (E) Transmission fluid pressure switch E (6th clutch) connector (F) Line pressure switch connector (G) Transmission range switch connector (H)
11. Remove the bolt (I) securing the harness cover (J), and remove the harness clamp (K).
12. Remove the harness cover bracket (A).
13. Raise the vehicle on a lift, and make sure it is supported securely.
14. Remove the engine undercover (A) and the front splash shield (B).
15. Disconnect the ATF temperature sensor connector (A), then remove the harness clamps (B).
16. Disconnect the transmission fluid pressure switch C (4th clutch) connector (A), then remove the harness clamp (B).
17. Disconnect the input shaft (mainshaft) speed sensor connector (A) and the output shaft (countershaft) speed sensor connector (B), then remove the harness clamps (C).
18. Remove the harness clamp (A), then remove the ATF dipstick guide tube (B) with the O-ring (C).
19. Remove the secondary valve body (A) and the gasket (B). Remove the ATF pipes (C). NOTE: There are 11 ATF pipes. Do not drop the ATF pipes into the transmission. If an ATF pipe is dropped into the transmission, the transmission will need to be disassembled to recover the pipe (s).
20. Replace the secondary valve body.
21. Clean the mounting surfaces of the transmission housing. Do not allow dust or other foreign particles to enter the transmission.
22. Apply ATF to new O-rings (A), and install the O-rings over the ATF pipes (B). Then install the ATF pipes with the filter ends (C) facing the secondary valve body (D) into the transmission.
23. Install a new gasket (E) to the transmission housing.
24. Install the secondary valve body while aligning the ATF pipes with the pipe holes on the secondary valve body, and secure the secondary valve body with the bolts.
25. Install the dipstick guide tube (A) with a new O-ring (B), and install the harness clamp (C).
26. Install the harness cover bracket (A).
27. Install the bolt (A) securing the harness cover (B), and install the harness clamp (C).
28. Connect these connectors: A/T clutch pressure control solenoid valve A connector (D) A/T clutch pressure control solenoid valve B connector (E) A/T clutch pressure control solenoid valve C connector (F) A/T clutch pressure control solenoid valve D connector (G) Transmission fluid pressure switch B (3rd clutch) connector (H) Transmission fluid pressure switch E (6th clutch) connector (I) Line pressure switch connector (J) Transmission range switch connector (K)
29. Install the harness clamps (A).
30. Connect these connectors: Shift solenoid valve A connector (B) Shift solenoid valve B connector (C) Shift solenoid valve C connector (D) Line pressure solenoid valve A connector (E)
31. Connect the input shaft (mainshaft) speed sensor connector (A) and the output shaft (countershaft) speed sensor connector (B), and install the harness clamps (C).
32. Connect the transmission fluid pressure switch C (4th clutch) connector (A), and install the harness clamp (B).
33. Connect the ATF temperature sensor connector (A), and install the harness clamps (B).
34. install the front splash shield and the engine undercover.
35. Install the starter (see step 61 on TRANSMISSION INSTALLATION ).
36. Install the ATF dipstick.
37. Install the battery base (see step 66 on TRANSMISSION INSTALLATION ).
38. Install the auxiliary under-hood fuse/relay box (see step 67 on TRANSMISSION INSTALLATION ).
39. Install the battery heat shield (see step 68 on TRANSMISSION INSTALLATION ).
40. Install the intake air duct (see step 69 on TRANSMISSION INSTALLATION ).
41. Install the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system) ).
42. Do the battery installation procedure (see «BATTERY REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/body-electrical/#battery) ).

Scheme 171

Scheme 172

1. Connect the HDS to the DLC (A) located under the driver's side of the dashboard.
2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode. Make sure the HDS communicates with the PCM. If it does not, go to the DLC circuit troubleshooting (see «DLC CIRCUIT TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/communication-devices/#communication-systems-f-can-k-line__dlc-circuit-troubleshooting) ).
3. Select Shift Solenoid Valve A or B in the Miscellaneous Test Menu on the HDS.
4. Check that shift solenoid valve A or B operates with the HDS. A clicking sound should be heard. If a clicking sound is heard, the solenoid valve is OK. The test is complete, disconnect the HDS. If no clicking sound is heard, go to step 5 and test the solenoid valve.
5. Do the battery removal procedure (see «BATTERY REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/body-electrical/#battery) ).
6. Remove the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system) ).
7. Remove the intake air duct (see step 8 on TRANSMISSION REMOVAL ).
8. Remove the battery heat shield (see step 9 on TRANSMISSION REMOVAL ).
9. Remove the auxiliary under-hood fuse/relay box (see step 10 on TRANSMISSION REMOVAL ).
10. Remove the battery base (see step 11 on TRANSMISSION REMOVAL ).
11. Remove the ATF dipstick and the starter (see step 16 on TRANSMISSION REMOVAL ).
12. Remove the secondary valve body (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
13. Measure the resistance of the shift solenoid valve between connector terminals No. 1 and No. 2. Standard: 13.3-16.9 ohms at 32-86°F (0-30°C) If the resistance is out of the standard, replace the secondary valve body, then go to step 15 . If the resistance is within the standard, go to step 14 and check the solenoid valve for a clicking sound. Terminal side of male terminals
14. Connect a jumper wire from the negative battery terminal to shift solenoid valve A or B connector terminal No. 1, and connect another jumper wire from the positive battery terminal to connector terminal No. 2. If a clicking sound is heard, repair the wire between the PCM connector terminal and the defective shift solenoid valve, then go to step 15. If no clicking sound is heard, replace the secondary valve body, then go to step 15.
15. Install the secondary valve body (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
16. Install the starter (see step 61 on TRANSMISSION INSTALLATION ).
17. Install the ATF dipstick.
18. Install the battery base (see step 66 on TRANSMISSION INSTALLATION ).
19. Install the auxiliary under-hood fuse/relay box (see step 67 on TRANSMISSION INSTALLATION ).
20. Install the battery heat shield (see step 68 on TRANSMISSION INSTALLATION ).
21. Install the intake air duct (see step 69 on TRANSMISSION INSTALLATION ).
22. Install the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system) ).
23. Do the battery installation procedure (see «BATTERY REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/body-electrical/#battery) ).

Scheme 173

Scheme 174

Scheme 175

Scheme 176

1. Connect the HDS to the DLC (A) located under the driver's side of the dashboard.
2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode. Make sure the HDS communicates with the PCM. If it does not, go to the DLC circuit troubleshooting (see «DLC CIRCUIT TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/communication-devices/#communication-systems-f-can-k-line__dlc-circuit-troubleshooting) ).
3. Select Shift Solenoid Valve C in the Miscellaneous Test Menu on the HDS.
4. Check that shift solenoid valve C operates with the HDS. A clicking sound should be heard. If a clicking sound is heard, the solenoid valve is OK. The test is complete, disconnect the HDS. If no clicking sound is heard, go to step 5 and test the solenoid valve.
5. Raise the vehicle on a lift, and make sure it is securely supported.
6. Remove the engine undercover (A) and the front splash shield (B).
7. Disconnect the shift solenoid valve C connector (A), and remove shift solenoid valve C with the O-rings (B).
8. Measure the resistance of the shift solenoid valve between connector terminals No. 1 and No. 2. Standard: 13.3-16.9 ohms at 32-86°F (0-30°C) If the resistance is out of the standard, go to step 13 and replace the shift solenoid valve. If the resistance is within the standard, go to step 9 and check the solenoid valve for a clicking sound and operation.
9. Connect a tube (A) to shift solenoid valve C.
10. Connect a jumper wire from the negative battery terminal to shift solenoid valve C connector terminal No. 1, and connect another jumper wire from the positive battery terminal to connector terminal No. 2. If a clicking sound is heard, go to step 11. If no clicking sound is heard, go to step 13 and replace the shift solenoid valve.
11. Connect a jumper wire from the negative battery terminal to shift solenoid valve C connector terminal No. 1, and connect another jumper wire from the positive battery terminal to connector terminal No. 2. Blow the air to the tube. If the air goes out of the port (B), go to step 12. If the air does not go out of the port (B), go to step 13 and replace the shift solenoid valve.
12. Disconnect the jumper wires from the shift solenoid valve C connector. Blow air into the tube (A): If the air goes out of the port (B), go to step 13 and replace shift solenoid valve C. If the air does not go out of the port (B), repair the wire between the PCM connector terminal and shift solenoid valve C.
13. Install new O-rings (three O-rings per solenoid valve) on the solenoid valve. NOTE: A new solenoid valve comes with new O-rings. If you install a new solenoid valve, use the O-rings provided with it.
14. Install shift solenoid valve C, and connect the shift solenoid valve C connector.
15. Install the engine undercover and the front splash shield.

Scheme 177

Scheme 178

1. Connect the HDS to the DLC (A) located under the driver's side of the dashboard.
2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode. Make sure the HDS communicates with the PCM. If it does not, go to the DLC circuit troubleshooting (see «DLC CIRCUIT TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/communication-devices/#communication-systems-f-can-k-line__dlc-circuit-troubleshooting) ).
3. Select Line Pressure Solenoid Valve A in the Miscellaneous Test Menu on the HDS.
4. Check that line pressure solenoid valve A operate with the HDS. A clicking sound should be heard. If a clicking sound is heard, the solenoid valve is OK. The test is complete, disconnect the HDS. If no clicking sound is heard, go to step 5 and test the solenoid valve.
5. Do the battery removal procedure (see «BATTERY REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/body-electrical/#battery) ).
6. Remove the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system) ).
7. Remove the intake air duct (see step 8 on TRANSMISSION REMOVAL ).
8. Remove the battery heat shield (see step 9 on TRANSMISSION REMOVAL ).
9. Remove the auxiliary under-hood fuse/relay box (see step 10 on TRANSMISSION REMOVAL ).
10. Remove the battery base (see step 11 on TRANSMISSION REMOVAL ).
11. Remove the ATF dipstick and the starter (see step 16 on TRANSMISSION REMOVAL ).
12. Remove the secondary valve body (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
13. Measure the resistance of line pressure solenoid valve A between connector terminals No. 1 and No. 2. Standard: 13.3-16.9 ohms at 32-86°F (0-30°C) If the resistance is out of the standard, replace the secondary valve body, then go to step 15 . If the resistance is within the standard, go to step 14 and check the solenoid valve for a clicking sound.
14. Connect a jumper wire from the negative battery terminal to line pressure solenoid valve A connector terminal No. 1, and connect another jumper wire from the positive battery terminal to connector terminal No. 2. If a clicking sound is heard, repair the wire between the PCM connector terminal and line pressure solenoid valve A, then go to step 15. If no clicking sound is heard, replace the secondary valve body, then go to step 15.
15. Install the secondary valve body (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
16. Install the starter (see step 61 on TRANSMISSION INSTALLATION ).
17. Install the ATF dipstick.
18. Install the battery base (see step 66 on TRANSMISSION INSTALLATION ).
19. Install the auxiliary under-hood fuse/relay box (see step 67 on TRANSMISSION INSTALLATION ).
20. Install the battery heat shield (see step 68 on TRANSMISSION INSTALLATION ).
21. Install the intake air duct (see step 69 on TRANSMISSION INSTALLATION ).
22. Install the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system) ).
23. Do the battery installation procedure (see «BATTERY REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/body-electrical/#battery) ).

Scheme 179

Scheme 180

1. Connect the HDS to the DLC (A) located under the driver's of the dashboard.
2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode. Make sure the HDS communicates with the PCM. If it does not, go to the DLC circuit troubleshooting (see «DLC CIRCUIT TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/communication-devices/#communication-systems-f-can-k-line__dlc-circuit-troubleshooting) ).
3. Select Clutch Pressure Control (Linear) Solenoid Valve A, B, C, or D in the Miscellaneous Test Menu on the HDS.
4. Test A/T clutch pressure control solenoid valve A, B, C, or D with the HDS. If the valves test OK, the test is complete. Disconnect the HDS. If the valves do not test OK, follow the instructions on the HDS. If the valves do not test OK, and the HDS does not determine the cause, go to step 5.
5. Do the battery removal procedure (see «BATTERY REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/body-electrical/#battery) ).
6. Remove the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system) ).
7. Remove the intake air duct (see step 8 on TRANSMISSION REMOVAL ).
8. Remove the battery heat shield (see step 9 on TRANSMISSION REMOVAL ).
9. Remove the auxiliary under-hood fuse/relay box (see step 10 on TRANSMISSION REMOVAL ).
10. Remove the battery base (see step 11 on TRANSMISSION REMOVAL ).
11. Disconnect the A/T clutch pressure control solenoid valve A, B, C, or D connector.
12. Measure the A/T clutch pressure control solenoid valve A, B, C, or D resistance between connector terminals No. 1 and No. 2. Standard: 4.5-5.9 ohms at 32-86°F (0-30°C) If the resistance is out of the standard, replace the secondary valve body (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ). If the resistance is within the standard, go to step 13.
13. Connect a jumper wire from the negative battery terminal to solenoid valve A, B, C, or D connector terminal No. 2, and connect another jumper wire from the positive battery terminal to connector terminal No. 1. If an operating sound is heard, the solenoid valve is OK. Reconnect the connector, and install all removed parts. If no operating sound is heard, replace the secondary valve body (see «SECONDARY VALVE BODY REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).

Scheme 181

Scheme 182

1. Raise the vehicle on a lift, or apply the parking brake, block both rear wheels, and raise the front of the vehicle. Make sure it is securely supported.
2. Remove the engine undercover (A) and the front splash shield (B).
3. Disconnect the input shaft (mainshaft) speed sensor connector, and remove the input shaft (mainshaft) speed sensor (A).
4. Install a new O-ring (B) on the new input shaft (mainshaft) speed sensor, then install the input shaft (mainshaft) speed sensor.
5. Check the connector for corrosion, dirt, or oil, and clean or repair if necessary, then connect the connector securely.
6. Install the front splash shield and the engine undercover.

Scheme 183

Scheme 184

1. Raise the vehicle on a lift, or apply the parking brake, block both rear wheels, and raise the front of the vehicle. Make sure it is securely supported.
2. Remove the engine undercover (A) and the front splash shield (B).
3. Disconnect the output shaft (countershaft) speed sensor connector, and remove the output shaft (countershaft) speed sensor (A).
4. Install a new O-ring (B) on the new output shaft (countershaft) speed sensor, then install the output shaft (countershaft) speed sensor.
5. Check the connector for corrosion, dirt, or oil, and clean or repair if necessary, then connect the connector securely.
6. Install the front splash shield and the engine undercover.

Scheme 185

1. Remove the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system) ).
2. Remove the intake air duct (see step 8 on TRANSMISSION REMOVAL ).
3. Disconnect the transmission fluid pressure switch A (2nd clutch) connector, and remove transmission fluid pressure switch A (2nd clutch) and the sealing washer (B).
4. Install transmission fluid pressure switch A (2nd clutch) and a new sealing washer, and tighten the switch.
5. Check the connector for corrosion, dirt, or oil, and clean or repair if necessary, then connect the connector securely.
6. Install the intake air duct (see step 69 on TRANSMISSION INSTALLATION ).
7. Install the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system) ).

Scheme 186

1. Do the battery removal procedure (see «BATTERY REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/body-electrical/#battery) ).
2. Remove the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system) ).
3. Remove the intake air duct (see step 8 on TRANSMISSION REMOVAL ).
4. Remove the battery heat shield (see step 9 on TRANSMISSION REMOVAL ).
5. Remove the auxiliary under-hood fuse/relay box (see step 10 on TRANSMISSION REMOVAL ).
6. Remove the battery base (see step 11 on TRANSMISSION REMOVAL ).
7. Disconnect the transmission fluid pressure switch B (3rd clutch) connector, and remove transmission fluid pressure switch B (3rd clutch) and the sealing washer (A).
8. Install transmission fluid pressure switch B (3rd clutch) and a new sealing washer, and tighten the switch.
9. Check the connector for corrosion, dirt, or oil, and clean or repair if necessary, then connect the connector securely.
10. Install the battery base (see step 66 on TRANSMISSION INSTALLATION ).
11. Install the auxiliary under-hood fuse/relay box (see step 67 on TRANSMISSION INSTALLATION ).
12. Install the battery heat shield (see step 68 on TRANSMISSION INSTALLATION ).
13. Install the intake air duct (see step 69 on TRANSMISSION INSTALLATION ).
14. Install the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system) ).
15. Do the battery installation procedure (see «BATTERY REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/body-electrical/#battery) ).

Scheme 187

Scheme 188

1. Raise the vehicle on a lift, or apply the parking brake, block both rear wheels, and raise the front of the vehicle. Make sure it is securely supported.
2. Remove the engine undercover (A) and the front splash shield (B).
3. Disconnect the transmission fluid pressure switch C (4th clutch) connector, and remove transmission fluid pressure switch C (4th clutch) and the sealing washer (A).
4. Install transmission fluid pressure switch C (4th clutch) and a new sealing washer, and tighten the switch.
5. Check the connector for corrosion, dirt, or oil, and clean or repair if necessary, then connect the connector securely.
6. Install the front splash shield and the engine undercover.

Scheme 189

1. Remove the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system) ).
2. Remove the intake air duct (see step 8 on TRANSMISSION REMOVAL ).
3. Disconnect the transmission fluid pressure switch D (5th clutch) connector, and remove transmission fluid pressure switch D (5th clutch) and the sealing washer (A).
4. Install transmission fluid pressure switch D (5th clutch) and a new sealing washer, and tighten the switch.
5. Check the connector for corrosion, dirt, or oil, and clean or repair if necessary, then connect the connector securely.
6. Install the intake air duct (see step 69 on TRANSMISSION INSTALLATION ).
7. Install the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system) ).

Scheme 190

1. Do the battery removal procedure (see «BATTERY REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/body-electrical/#battery) ).
2. Remove the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system) ).
3. Remove the intake air duct (see step 8 on TRANSMISSION REMOVAL ).
4. Remove the battery heat shield (see step 9 on TRANSMISSION REMOVAL ).
5. Remove the auxiliary under-hood fuse/relay box (see step 10 on TRANSMISSION REMOVAL ).
6. Remove the battery base (see step 11 on TRANSMISSION REMOVAL ).
7. Disconnect the transmission fluid pressure switch E (6th clutch) connector, and remove transmission fluid pressure switch E (6th clutch) and the sealing washer (A).
8. Install transmission fluid pressure switch E (6th clutch) and a new sealing washer, and tighten the switch.
9. Check the connector for corrosion, dirt, or oil, and clean or repair if necessary, then connect the connector securely.
10. Install the battery base (see step 66 on TRANSMISSION INSTALLATION ).
11. Install the auxiliary under-hood fuse/relay box (see step 67 on TRANSMISSION INSTALLATION ).
12. Install the battery heat shield (see step 68 on TRANSMISSION INSTALLATION ).
13. Install the intake air duct (see step 69 on TRANSMISSION INSTALLATION ).
14. Install the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system) ).
15. Do the battery installation procedure (see «BATTERY REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/body-electrical/#battery) ).

Scheme 191

1. Do the battery removal procedure (see «BATTERY REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/body-electrical/#battery) ).
2. Remove the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system) ).
3. Remove the intake air duct (see step 8 on TRANSMISSION REMOVAL ).
4. Remove the battery heat shield (see step 9 on TRANSMISSION REMOVAL ).
5. Remove the auxiliary under-hood fuse/relay box (see step 10 on TRANSMISSION REMOVAL ).
6. Remove the battery base (see step 11 on TRANSMISSION REMOVAL ).
7. Disconnect the line pressure switch connector, and remove the line pressure switch (A) and the sealing washer (B).
8. Install the line pressure switch and a new sealing washer, and tighten the switch.
9. Check the connector for corrosion, dirt, or oil, and clean or repair if necessary, then connect the connector securely.
10. Install the battery base (see step 66 on TRANSMISSION INSTALLATION ).
11. Install the auxiliary under-hood fuse/relay box (see step 67 on TRANSMISSION INSTALLATION ).
12. Install the battery heat shield (see step 68 on TRANSMISSION INSTALLATION ).
13. Install the intake air duct (see step 69 on TRANSMISSION INSTALLATION ).
14. Install the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system) ).
15. Do the battery installation procedure (see «BATTERY REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/body-electrical/#battery) ).

Scheme 192

Scheme 193

Scheme 194

1. Raise the vehicle on a lift, or apply the parking brake, block both rear wheels, and raise the front of the vehicle. Make sure it is securely supported.
2. Remove the engine undercover (A) and the front splash shield (B).
3. Remove the drain plug (A), and drain the automatic transmission fluid (ATF).
4. Reinstall the drain plug with a new sealing washer (B).
5. Disconnect the ATF temperature sensor connector (A), then remove the ATF temperature sensor (B).
6. Install a new O-ring (C) on a new ATF temperature sensor, and install the ATF temperature sensor.
7. Check the connector for corrosion, dirt, or oil, and clean or repair if necessary, then connect the connector securely.
8. Refill the transmission with ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ).
9. Install the front splash shield and the engine undercover.

ATF Level Check

Note. Keep all foreign particles out of the transmission. Check the fluid level within 60-90 seconds after turning the engine off. Higher fluid level may be indicated if the radiator fan comes on twice or more.

Scheme 195

Scheme 196

Scheme 197

1. Park the vehicle on the level ground.
2. Warm up the engine to normal operating temperature (the radiator fan comes on), then turn the engine off.
3. Remove the ATF dipstick (yellow loop) (A) from the dipstick guide tube, and wipe it with a clean cloth.
4. Insert the dipstick back into the dipstick guide tube (B) aligning the notch (C) with the guide tab (D).
5. Remove the dipstick and check the fluid level. It should be between the upper mark (A) and the lower mark (B).
6. If the ATF level is below the lower mark, check for fluid leaks at the transmission, the hoses, and the line joints. If a problem is found, fix it before filling the transmission with ATF. NOTE: If the vehicle is driven when the ATF level is below the lower mark, one or more of these symptoms may occur: Transmission damage. Vehicle does not move in any gear. Vehicle accelerates poorly, and flares when starting off in forward and reverse positions. The engine vibrates at idle.
7. If the ATF level is above the upper mark, drain the ATF to proper level (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ). NOTE: If the vehicle is driven when the ATF level is above the upper mark, the vehicle may creep forward while in N, or have shifting problems.
8. If necessary, fill the transmission with the recommended fluid through the filler hole (A) to bring the fluid level between the upper mark and the lower mark of the dipstick. Do not fill past the upper mark. Always use Acura ATF DW-1 Automatic Transmission Fluid (ATF). Using a non-Acura ATF can affect shift quality.
9. Install the ATF filler bolt (B) and a new sealing washer (C).
10. Insert the dipstick back into the dipstick guide tube.

ATF Replacement

Note. Keep all foreign particles out of the transmission.

Scheme 198

Scheme 199

Scheme 200

Scheme 201

Scheme 202

Scheme 203

1. Park the vehicle on the level ground.
2. Warm up the engine to normal operating temperature (the radiator fan comes on), and turn the engine off.
3. Raise the vehicle on a lift, make sure it is securely supported.
4. Remove the engine undercover.
5. Remove the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system) ).
6. Remove the intake air duct (see step 8 on TRANSMISSION REMOVAL ).
7. Remove the ATF filler bolt (A) and the sealing washer (B).
8. Remove the drain plug (A), and drain the automatic transmission fluid (ATF). NOTE: If a cooler cleaning is necessary, refer to the «ATF COOLER CLEANING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-cooler-cleaning) .
9. Reinstall the drain plug with a new sealing washer (B).
10. Refill the transmission with the recommended fluid through the filler hole (A). Always use Acura ATF DW-1 Automatic Transmission Fluid (ATF). Using a non-Acura ATF can affect shift quality. Automatic Transmission Fluid Capacity: 3.1 L (3.3 US qt) 8.0 L (8.5 US qt) at overhaul
11. Install the ATF filler bolt (B) and a new sealing washer (C).
12. Remove the ATF dipstick (A).
13. Make sure the fluid level is between the upper mark (B) and the lower mark (C) on the dipstick, then insert the dipstick back into the dipstick guide tube.
14. Install the engine undercover.
15. Install the intake air duct (see step 69 on TRANSMISSION INSTALLATION ).
16. Install the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system) ).
17. If the Maintenance Minder required ATF replacement, reset the Maintenance Minder (see «MAINTENANCE MINDER™»(/acura/zdx/i-2009-2013/remont/schedule/#maintenance) ), and this procedure is complete. If the Maintenance Minder did not require you to replace the ATF, go to step 18.
18. Connect the HDS to the DLC (A) located under the driver's side of the dashboard.
19. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode. Make sure the HDS communicates with the PCM. If it does not, go to the DLC circuit troubleshooting (see «DLC CIRCUIT TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/communication-devices/#communication-systems-f-can-k-line__dlc-circuit-troubleshooting) ).
20. Select GAUGES in the BODY ELECTRICAL with the HDS.
21. Select ADJUSTMENT in the GAUGES with the HDS.
22. Select MAINTENANCE MINDER in the ADJUSTMENT with the HDS.
23. Select RESET in the MAINTENANCE MINDER with the HDS.
24. Select MAINTENANCE SUB ITEM 3 RESET, and reset the ATF life with the HDS.

Transmission Removal

Special Tools Required

1. Hood Prop Bar 07AAZ-SZNA100
2. Engine Support Hanger, A and Reds AAR-T1256*
3. Subframe Adapter VSB02C000016*
4. Engine Hanger Balance Bar VSB02C000019*
5. Engine Hanger Adapter Set VSB02C000031 *

*: Available through the Acura Tool and Equipment Program 888-424-6857.

Note. Use fender covers to avoid damaging painted surfaces. Special tool Reds engine support hanger AAR-T1256 must be used with the side engine mount installed.

Scheme 204

Scheme 205

Scheme 206

Scheme 207

Scheme 208

Scheme 209

Scheme 210

Scheme 211

Scheme 212

Scheme 213

Scheme 214

Scheme 215

Scheme 216

Scheme 217

Scheme 218

Scheme 219

Scheme 220

Scheme 221

Scheme 222

Scheme 223

Scheme 224

Scheme 225

Scheme 226

Scheme 227

Scheme 228

Scheme 229

Scheme 230

Scheme 231

Scheme 232

Scheme 233

Scheme 234

Scheme 235

Scheme 236

Scheme 237

Scheme 238

Scheme 239

Scheme 240

Scheme 241

Scheme 242

Scheme 243

Scheme 244

Scheme 245

Scheme 246

Scheme 247

Scheme 248

Scheme 249

Scheme 250

Scheme 251

Scheme 252

Scheme 253

Scheme 254

Scheme 255

1. Remove the engine cover (see step 7 on «ENGINE REMOVAL»(/acura/zdx/i-2009-2013/remont/mechanical/#engine-assembly__engine-removal) ).
2. Remove the front fender trim from the passenger side (see «FRONT FENDER TRIM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/exteriorinterior-trim/#exterior-trim__front-fender-trim-replacement) ).
3. Ply the hood support strut clip, and release the hood support strut (see step 1 on «REAR DOOR PANEL REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/exterior-body-panels/#doors__rear-door-panel-removalinstallation) ), then move the hood to a vertical position and install the hood prop bar as shown in illustration.
4. Drain the power steering fluid (see «FLUID CHECK/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/manual-power-steering/#hydraulic-power-steering-components__fluid-checkreplacement) ).
5. Do the battery removal procedure (see «BATTERY REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/body-electrical/#battery) ).
6. Remove the front bulkhead cover (see «FRONT BULKHEAD COVER REPLACEMENT»(/acura/zdx/i-2009-2013/remont/exteriorinterior-trim/#exterior-trim__front-bulkhead-cover-replacement) ).
7. Remove the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system) ).
8. Remove the intake air duct.
9. Remove the battery heat shield.
10. Remove the stud bolt (A), then swing the auxiliary under-hood fuse/relay box (B) out of the way.
11. Remove the battery base.
12. Remove the steering joint cover (A).
13. Make reference marks (B) across the steering joint (C) and the steering gearbox pinion shaft (D). If the center guide is still installed, take care not to displace it. If the center guide is no longer installed, or is displaced during when the joint is disconnected, refer to the reference marks to reinstall the joint. Loosen the upper steering joint bolt (E), and remove the lower steering joint bolt (F), then disconnect the steering joint from the steering gearbox pinion shaft. Do not disconnect the steering joint from the column shaft (G).
14. Center the steering wheel, and install a commercially available steering wheel holder tool (see step 11 on «STEERING GEARBOX REMOVAL»(/acura/zdx/i-2009-2013/remont/manual-power-steering/#hydraulic-power-steering-components__steering-gearbox-removal) ).
15. Cover the auto-tensioner, the alternator, the A/C compressor with several shop towels to protect them from spilled power steering fluid. Remove the power steering pump outlet line (A) from the power steering pump, and remove the hose clamp bolt (B). Cover the opening of the pump and the pump outlet line with a piece of tape to prevent foreign material from entering either the pump or the outlet line. Take care not to spill fluid on the vehicle. Wipe off any spilled fluid at once.
16. Remove the ATF dipstick, then disconnect the positive starter cable (A) and the S terminal connector (B) from the starter (C). Remove the starter and the gasket (D).
17. Remove the transfer breather box bracket (A), and remove the breather hose (B) from the clamp (C).
18. Remove the bolt (A) securing the harness cover (B), and swing the harness cover out of the way.
19. Remove the harness clamps (A), and remove the clamp bracket (B).
20. Remove the transmission breather hose (C) from the breather pipe (D).
21. Remove the spring clip (A) and the control pin (B), then separate the shift cable end (C) from the selector control lever (D).
22. Check the bushing (E) in the shift cable end for proper fit and wear. If the bushing is loose or worn, replace the shift cable (see «SHIFT CABLE REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
23. Remove the nuts (A) securing the shift cable bracket (B).
24. Remove the bolt (A) securing the harness cover (B), and swing the harness cover out of the way.
25. Disconnect these connectors: Shift solenoid valve A connector (A) Shift solenoid valve B connector (B) Shift solenoid valve C connector (C) Line pressure solenoid valve A connector (D)
26. Remove the harness clamps (E).
27. Disconnect these connectors: A/T clutch pressure control solenoid valve A connector (A) A/T clutch pressure control solenoid valve B connector (B) A/T clutch pressure control solenoid valve C connector (C) A/T clutch pressure control solenoid valve D connector (D) Transmission fluid pressure switch B (3rd clutch) connector (E) Transmission fluid pressure switch E (6th clutch) connector (F) Line pressure switch connector (G) Transmission range switch connector (H)
28. Remove the bolt (I) securing the harness cover (J), and remove the harness clamp (K).
29. Remove the harness cover bracket (A).
30. Disconnect the transmission fluid pressure switch A (2nd clutch) connector (A) and the transmission fluid pressure switch D (5th clutch) connector (B).
31. Remove the ATF cooler hoses (A) from the ATF cooler line (B) and the ATF filter (C). Turn the ends of the cooler hoses up to prevent ATF from flowing out, then plug the cooler hoses, the line, and the ATF filter.
32. Remove the connector bracket (A) from the front cylinder head; use the bracket bolt hole to attach the engine hanger balance bar front arm.
33. Remove the engine mount control solenoid valve bracket (A) from the rear cylinder head; use the bracket bolt hole (B) to attach the engine hanger balance bar rear arm.
34. Remove the service caps (A) for the front damper flange nuts from the cowl cover (B). Position the engine hanger adapters (VSB02C000031) with the "FRONT" mark facing forward over the damper mounting nuts.
35. Install the engine support hanger (AAR-T1256) and the engine hanger balance bar (VSB02C000019) onto the vehicle as shown in illustration. Attach the front arm (A) to the front cylinder head with several spacers (B) and a 10 mm bolt (C), and attach the rear arm (D) to the rear cylinder head with a spacer (E) and an 8 mm bolt (F). Tighten the wing nut (G) by hand, and lift and support the engine/transmission. NOTE: Be careful when working around the windshield. Be careful not to damage the hood opener cable when installing the engine support hanger at the front bulkhead. AAR-T1256 two sets required for stacking additional cross section bar.
36. Remove the upper transmission housing mounting bolts.
37. Remove the vacuum hose (A) from the vacuum pipe (B), and remove the vacuum pipe from its clamp.
38. Remove the front engine mount stop (C) and the clamp bracket (D), and remove the front engine mount bolt (E).
39. Raise the vehicle on a lift, and make sure it is securely supported.
40. Remove the front wheels.
41. Remove the engine undercover (A) and the front splash shield (B).
42. Remove the drain plug (A), and drain the automatic transmission fluid (ATF).
43. Reinstall the drain plug with a new sealing washer (B).
44. Disconnect the ATF temperature sensor connector (A), then remove the harness clamps (B).
45. Disconnect the transmission fluid pressure switch C (4th clutch) connector (A), then remove the harness clamp(B).
46. Disconnect the input shaft (mainshaft) speed sensor connector (A) and the output shaft (countershaft) speed sensor connector (B), then remove the harness clamps (C).
47. With active damper system: Disconnect the front suspension stroke sensor connector (A) on both lower arms, and remove the harness clamps (B) from the front subframe.
48. With electronically controlled power steering system (ECPS): Disconnect the ECPS valve motor connector (A).
49. Remove the cotter pins (A) and the nuts (B), and separate the tie-rod end ball joints (C) from the knuckles (see step 3 on «HUB BEARING UNIT REPLACEMENT»(/acura/zdx/i-2009-2013/remont/suspension-rear/#rear-suspension) ).
50. Insert a hex wrench (D) in the top of the stabilizer link ball joint pins (E), and remove the nuts (F), then separate the stabilizer links (G).
51. Remove the lock pins (H) and the castle nuts (I), and separate the lower arms (J) from the knuckles (K) (see step 6 on «HUB BEARING UNIT REPLACEMENT»(/acura/zdx/i-2009-2013/remont/suspension-rear/#rear-suspension) ).
52. Remove the front subframe stiffener.
53. Remove exhaust pipe A (see «EXHAUST PIPE AND MUFFLER REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system__exhaust-pipe-and-muffler-replacement) ).
54. Make reference marks (A) across the No. 1 propeller shaft (B) and the transfer companion flange (C), and separate the propeller shaft from the transfer companion flange. Support the propeller shaft to the body with a nylon strap.
55. Disconnect the breather hose (A) from the breather pipe (B) on the transfer assembly, and remove the breather hose from the clamp (C).
56. Remove the transfer assembly from the transmission.
57. Remove the torque converter cover (A), and remove the eight bolts (B) while rotating the crankshaft pulley.
58. Disconnect the PSP switch connector.
59. Loosen the hose clamp bolt (A), then disconnect the power steering fluid hose (B) from the fluid line at the left front of the front subframe.
60. Remove the rear engine mount bolts.
61. Remove the bolt securing the power steering fluid line clamp bracket (A) on the rear engine mount bracket, and turn the bracket away from the rear engine mount bracket.
62. Remove the lower transmission mount bolts (A) and the transmission ground terminal bracket (B).
63. Attach the subframe adapter (VSB02C000016) to the front subframe by looping the strap (A) over the front of the front subframe, then secure the strap with the stop (B), then tighten the wing nut (C).
64. Raise the transmission jack and line up the slots in the arms with the bolt holes on the corner of the jack base, then tighten the bolts.
65. Remove the bolts securing the front stiffeners (A) and the rear stiffeners (B), then remove the bolts securing the front subframe (C), and lower the front subframe carefully.
66. Support the transmission with a transmission jack.
67. Remove the driveshafts from the differential and the intermediate shaft. Coat all precision machined surfaces with clean engine oil, then put plastic bags over driveshaft ends. NOTE: Plug the driveshaft hole (A) to prevent dirt and solvent from entering the transmission.
68. Support the driveshafts to the body with nylon straps.
69. Remove the intermediate shaft (A). Coat all precision machined surfaces with clean engine oil, then put plastic bags over intermediate shaft ends. NOTE: Plug the intermediate shaft hole (B) to prevent dirt and solvent from entering the transmission.
70. Remove the harness clamp (A), and remove the harness clamp bracket (B).
71. Remove the front engine mount bracket (C).
72. Remove the crankshaft position (CKP) sensor cover (A), and disconnect the CKP sensor connector (B).
73. Remove the lower transmission housing mounting bolts.
74. Lower the transmission by loosening the wing nut of the engine support hanger, and tilt the engine just enough for the transmission to clear its end from the side frame.
75. Slide the transmission away from the engine to remove it from the vehicle.
76. Remove the torque converter (A), the O-ring (B), and the dowel pins (C).
77. Inspect the drive plate, and replace it if it is damaged (see «DRIVE PLATE REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).

Scheme 256

1. Remove the transmission assembly (see «TRANSMISSION REMOVAL»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__transmission-removal) ).
2. Remove the drive plate (A) and the washer (B) from the engine.
3. Install the drive plate and the washer on the engine crankshaft, and tighten the eight bolts in a crisscross pattern in at least two steps.
4. Install the transmission assembly (see «TRANSMISSION INSTALLATION»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__transmission-installation) ).

Transmission Installation

Special Tools Required

1. Hood Prop Bar 07AAZ-SZNA100
2. Engine Support Hanger, A and Reds AAR-T1256*
3. Subframe Adapter VSB02C000016*
4. Engine Hanger Balance Bar VSB02C000019*
5. Engine Hanger Adapter Set VSB02C000031 *

*: Available through the Acura Tool and Equipment Program 888-424-6857.

Note. Use fender covers to avoid damaging painted surfaces.

Scheme 257

Scheme 258

Scheme 259

Scheme 260

Scheme 261

Scheme 262

Scheme 263

Scheme 264

Scheme 265

Scheme 266

Scheme 267

Scheme 268

Scheme 269

Scheme 270

Scheme 271

Scheme 272

Scheme 273

Scheme 274

Scheme 275

Scheme 276

Scheme 277

Scheme 278

Scheme 279

Scheme 280

Scheme 281

Scheme 282

Scheme 283

Scheme 284

Scheme 285

Scheme 286

Scheme 287

Scheme 288

Scheme 289

Scheme 290

Scheme 291

Scheme 292

Scheme 293

Scheme 294

Scheme 295

Scheme 296

Scheme 297

Scheme 298

Scheme 299

Scheme 300

Scheme 301

Scheme 302

Scheme 303

Scheme 304

1. If you did not clean the ATF cooler after removing the transmission, and you are installing an overhauled or remanufactured transmission, clean the ATF cooler (see «ATF COOLER CLEANING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-cooler-cleaning) ), failure to do this can cause a repeat transmission failure.
2. Install a new O-ring (A) on the torque converter (B), then install the torque converter on the mainshaft (C). NOTE: Make sure the torque converter is fully engaged on the mainshaft, the stator shaft, and the ATF pump drive gear. Failure to do so will result in severe transmission or engine damage.
3. Install the 14x20 mm dowel pin (D) and the 10x20 mm dowel pin (E) in the torque converter housing.
4. Place the transmission on the transmission jack, and raise it to the engine level.
5. Attach the transmission to the engine, and install the lower transmission housing mounting bolts. Front side Rear side
6. Connect the crankshaft position (CKP) sensor connector (A), and install the CKP sensor cover (B).
7. Install the front engine mount bracket (A) with new bolts.
8. Install the harness clamp bracket (B) with the bolt, and install the harness clamp (C).
9. Install a new set ring (A) on the intermediate shaft (B).
10. Clean the areas where the intermediate shaft contacts the transmission (differential) with solvent, and dry with compressed air. Apply ATF to the intermediate shaft splines (C), then install the intermediate shaft, be sure not to allow dust or other foreign particles to enter the transmission. NOTE: Insert the intermediate shaft carefully to prevent damaging the oil seal (D).
11. Install a new set ring (A) on the left driveshaft (B).
12. Clean the areas where the left driveshaft contacts the transmission (differential) with solvent, and dry with compressed air. Then install the left driveshaft, be sure not to allow dust or other foreign particles to enter the transmission. Turn the steering knuckle fully outward, and slide the driveshaft into the differential until you feel its set ring fully engages the side gear. NOTE: Insert the left driveshaft carefully to prevent damaging the oil seal (C).
13. Apply the recommended grease to the right driveshaft inboard joint splines (see «FRONT DRIVESHAFT INSTALLATION»(/acura/zdx/i-2009-2013/remont/axle-shafts/#drivelineaxle__front-driveshaft-installation) ).
14. Slide the right driveshaft over the intermediate shaft splines until you feel the driveshaft fully engages the intermediate shaft set ring.
15. Set the subframe adapter (VSB02C000016) to the front subframe by looping the strap (A) over the front of the front subframe, then secure the strap with the stop (B), then tighten the wing nut (C).
16. Raise the front subframe up to the body, then loosely install new front subframe mounting bolts (A), the front stiffener mounting bolts (B), and new rear stiffener mounting bolts (C).
17. Align the front subframe with the subframe alignment pin (see «SUBFRAME REPLACEMENT»(/acura/zdx/i-2009-2013/remont/exterior-body-panels/#frame) ).
18. Remove the jack and the subframe adapter.
19. Install the lower transmission mount bolts (A) and the transmission ground terminal bracket (B).
20. Install the rear engine mount bolts.
21. Turn the power steering fluid line clamp bracket (A) to seat on the rear engine mount bracket (B), and secure the bracket on the rear engine mount bracket.
22. Attach the torque converter to the drive plate (A) with eight bolts (B). Rotate the crankshaft pulley as necessary to tighten the bolt to half of the specified torque, then to the final torque, in a crisscross pattern. After tightening the last bolt, check that the crankshaft rotates freely.
23. Install the torque converter cover (C).
24. Connect the power steering fluid hose (A) to the line (B), and secure the hose with its hose clamp (C).
25. Connect the PSP switch connector.
26. Install the dowel pin (A) in the transmission, and install the transfer assembly (B) on the transmission.
27. Connect the breather hose (A) over the breather pipe (B) with facing the dot mark (C) to the rear side of the vehicle, and install the breather hose to the clamp (D) at the dot mark (E).
28. Install the No. 1 propeller shaft (A) to the transfer companion flange (B) by aligning the reference marks (C). Make sure you use new mounting bolts.
29. Install exhaust pipe A (see «EXHAUST PIPE AND MUFFLER REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system__exhaust-pipe-and-muffler-replacement) ).
30. Install the front subframe stiffener with new bolts.
31. Install the lower arm ball joints (A) to the knuckles (B) with new castle nuts (C), and install the lock pins (D).
32. Install new nuts (E) to the stabilizer link ball joint pins (F). Insert a hex wrench (G) in the top of the ball joint pins, and tighten the nuts to the specified torque.
33. Install the tie-rod end ball joints (H) to the knuckles with new nuts (I), and install new cotter pins (J).
34. With electronically controlled power steering system (ECPS): Connect the ECPS valve motor connector (A).
35. With active damper system: Connect the front suspension stroke sensor connector (A) on both lower arms, and install the harness clamps (B) on the front subframe.
36. Connect the input shaft (mainshaft) speed sensor connector (A) and the output shaft (countershaft) speed sensor connector (B), then install the harness clamps (C).
37. Connect the transmission fluid pressure switch C (4th clutch) connector (A), then install the harness clamp (B).
38. Connect the ATF temperature sensor connector (A), then install the harness clamps (B).
39. Install the upper transmission housing mounting bolts.
40. Connect the front engine mount (A) and the front engine mount bracket (B) with a new bolt (C).
41. Install the front engine mount stop (D) and the clamp bracket (E) with new nuts.
42. Connect the vacuum hose (F) to the vacuum pipe (G).
43. Remove the engine support hanger, the engine support hanger adapters, and the engine balance bar, and install the service caps to the cowl cover.
44. Install the connector bracket (A) to the front cylinder head.
45. Install the engine mount control solenoid valve bracket (A) to the rear cylinder head.
46. Connect the ATF cooler hoses (A) to the ATF cooler line (B) and the ATF filter (C), then secure the hoses with the clips (D) (see «ATF COOLER HOSE REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
47. Connect the transmission fluid pressure switch A (2nd clutch) connector (A) and the transmission fluid pressure switch D (5th clutch) connector (B).
48. Install the harness cover bracket (A), and install the harness clamp (B).
49. Install the bolt (A) securing the harness cover (B), and install the harness clamp (C).
50. Connect these connectors: A/T clutch pressure control solenoid valve A connector (D) A/T clutch pressure control solenoid valve B connector (E) A/T clutch pressure control solenoid valve C connector (F) A/T clutch pressure control solenoid valve D connector (G) Transmission fluid pressure switch B (3rd clutch) connector (H) Transmission fluid pressure switch E (6th clutch) connector (I) Line pressure switch connector (J) Transmission range switch connector (K)
51. Install the harness clamps (A).
52. Connect these connectors: Shift solenoid valve A connector (B) Shift solenoid valve B connector (C) Shift solenoid valve C connector (D) Line pressure solenoid valve A connector (E)
53. Install the bolt (A) securing the harness cover (B).
54. Install the shift cable bracket (A).
55. Apply molybdenum grease to the hole in the bushing (A) in the shift cable end (B).
56. Attach the shift cable end to the control lever (C), then insert the control pin (D) into the control lever hole through the shift cable end, and secure the control pin with the spring clip (E).
57. Connect the transmission breather hose (A) to the breather pipe (B).
58. Install the clamp bracket (C), and install the harness clamps (D).
59. Install the bolt (A) securing the harness cover (B).
60. Install the transfer breather box bracket (A), and install the breather hose (B) to the clamp (C) at the dot mark (D).
61. Install the starter (A) with a new gasket (B). Connect the S terminal connector (C) and the positive starter cable (D), and install the vacuum pipe (E) to the clamp (F).
62. Install the ATF dipstick.
63. Install the power steering pump outlet line (A) with a new O-ring (B) to the power steering pump, and install the hose clamp bolt (C).
64. Remove the steering wheel holder tool, then connect the steering joint (A) and the steering gearbox pinion shaft (B) while aligning the reference marks (C). Tighten the steering joint bolts.
65. Install the steering joint cover (D).
66. Install the battery base (A).
67. Install the auxiliary under-hood fuse/relay box (A).
68. Install the battery heat shield (A).
69. Install the intake air duct (A). NOTE: When tightening the screw of the hose clamp (B), align the edge of the hose clamp (C) with the painted mark (D).
70. Install the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system) ).
71. Install the front bulkhead cover (see «FRONT BULKHEAD COVER REPLACEMENT»(/acura/zdx/i-2009-2013/remont/exteriorinterior-trim/#exterior-trim__front-bulkhead-cover-replacement) ).
72. Refill the transmission with ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ).
73. Do the battery installation procedure (see «BATTERY REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/body-electrical/#battery) ).
74. Install the engine cover (see step 57 on «ENGINE INSTALLATION»(/acura/zdx/i-2009-2013/remont/mechanical/#engine-assembly__engine-installation) ).
75. Remove the hood prop bar, then reattach the hood support strut on the pivot bolt (see step 2 on «HOOD SUPPORT STRUT REPLACEMENT»(/acura/zdx/i-2009-2013/remont/exterior-body-panels/#hood) ).
76. Install the front wheels.
77. Install the front splash shield (A) and the engine undercover (B).
78. Refill the power steering fluid reservoir with fluid to the upper level line, and bleed air from the system (see «FLUID CHECK/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/manual-power-steering/#hydraulic-power-steering-components__fluid-checkreplacement) ).
79. Set the parking brake. Start the engine, and shift the transmission through all positions three times. Check the shift lever operation, the A/T gear position indicator operation, and the shift cable adjustment.
80. Start the engine in P or N, and warm it up to normal operating temperature (the radiator fan comes on).
81. Check the ATF level (see «ATF LEVEL CHECK»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-level-check) ).
82. Check the front wheel alignment (see «WHEEL ALIGNMENT»(/acura/zdx/i-2009-2013/remont/wheel-alignment/#front-and-rear-suspension-inspection__wheel-alignment) ).
83. Road test the vehicle (see «ROAD TEST»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).

ATF Cooler Cleaning

Special Tools Required

1. ATF Cooler Cleaner GHTTTCF6H*
2. Magnetic Nonbypass Spin-On Filter GTHGNBP2* *: Available through the Acura Tool and Equipment Program 888-424-6857

Before installing an overhauled or remanufactured automatic transmission, you must thoroughly clean the ATF cooler to prevent system contamination. Failure to do so could cause a repeat automatic transmission failure.

The cleaning procedure involves heated ATF delivered under high pressure (100 psi). Check the security of all hoses and connections. Always wear safety glasses or a face shield, along with gloves and protective clothing. If you get ATF in your eyes or on your skin, rinse with water immediately.

Scheme 305

Scheme 306

Scheme 307

Scheme 308

1. Check the fluid in the cooler cleaner tank. (The fluid level should be 4.5 inches from the top of the filler neck.) Adjust the level if needed; do not overfill. Use only recommended ATF; do not use any additives.
2. Plug the cooler cleaner into a 110 V grounded electrical outlet. NOTE: Make sure the outlet has no other appliances (light fixtures, drop lights, extension cords) plugged into it. Also, never plug the cooler cleaner into an extension cord or drop light; you could damage the unit.
3. Flip the HEAT toggle switch to ON; the green indicator above the toggle switch comes on. Wait 1 hour for the cooler cleaner to reach its operating temperature. (The cooler cleaner is ready to use when the temperature gauge reads 140°F to 150°F.) NOTE: If the red indicator above the HEAT toggle switch comes on, the fluid level in the tank is too low for the tank heater to work (see step 1 of this procedure).
4. Select the appropriate pair of fittings, and attach them to the radiator, to the hoses, or to the banjo bolts for flow through the ATF cooler cleaner.
5. Connect the red hose to the cooler outlet line (the line that normally goes to the external filter on the transmission).
6. Connect the blue hose to the cooler inlet line.
7. Connect a shop air hose (regulated to 100 to 125 psi) to the air purge valve. NOTE: The quick-connect fitting has a one-way check valve to keep ATF from entering your shop's air system. Do not remove or replace the fitting. Attach the coupler provided with the cooler cleaner to your shop air line if your coupler is not compatible.
8. Flip the MOTOR toggle switch to ON; the green indicator above the toggle switch comes on. Let the pump run for 5 minutes. While the pump is running, open and close the air purge valve periodically to cause agitation and improve the cleaning process. Always open the valve slowly. At the end of the 5-minute cleaning period, leave the air purge valve open. NOTE: While the pump is running with the air purge valve open, it is normal to see vapor coming from the filler/breather tube vents.
9. With the air purge valve open, flip the MOTOR toggle switch to OFF; the green indicator goes off. Leave the air purge valve open for at least 15 seconds to purge the lines and hoses of residual ATF, then close the valve.
10. Disconnect the red and blue hoses from the ATF cooler. Now connect the red hose to the cooler inlet line.
11. Now connect the blue hose to the cooler outlet line.
12. Flip the MOTOR toggle switch to ON, and let the pump run for 5 minutes. While the pump is running, open and close the air purge valve periodically. Always open the valve slowly. At the end of the 5-minute cleaning period, leave the air purge valve open. NOTE: While the pump is running with the air purge valve open, it is normal to see vapor coming from the filler/breather tube vents.
13. With the air purge valve open, flip the MOTOR toggle switch to OFF. Leave the air purge valve open for at least 15 seconds to purge the lines and hoses of residual ATF, then close the valve.
14. Disconnect the red and blue hoses from the ATF cooler lines.
15. Connect the red and blue hoses to each other.
16. Disconnect the shop air from the air purge valve. Disconnect and stow the coupler if used.
17. Disconnect and stow the fittings from the ATF cooler inlet and outlet lines.
18. Unplug the cooler cleaner from the 110 V outlet.

Tool Maintenance

Follow these instructions to keep the ATF cooler cleaner working properly

Scheme 309

1. Replace the two magnetic nonbypass spin-on filters after every 20 hours of use, based on the hour meter, or when you notice a restriction in the ATF flow.
2. Check the level and condition of the fluid in the tank before each use.
3. Replace the ATF in the tank when it looks dark or dirty.

Scheme 310

Note. When installing the hose clamps, make sure they do not interfere with the surrounding parts.

1. Install the ATF cooler hoses over the ATF cooler lines with the clips at the appropriate points in reference to the following list. Align the paint mark (K) facing the rear of the vehicle, and align the paint mark (L) facing up. Point Distance from Hose End to Clip (M) Hose End Contact Point A 2-4 mm (0.08-0.16 in) Bulge B C 6-8 mm (0.24-0.31 in) Bulge D E F G H 6-8 mm (0.24-0.31 in) ATF filter housing from 2 mm (0.08 in) I 6-8 mm (0.24-0.31 in) ATF filter housing J 6-8 mm (0.24-0.31 in) Bulge
2. Align the paint mark on the ATF cooler hose end (N) with the paint mark (O) on the ATF filter holder.
3. Secure the ATF cooler hose with the clamps (P) at the paint lines (Q).
4. Refill the transmission with ATF to the proper level (see «ATF LEVEL CHECK»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-level-check) ).

Scheme 311

1. Remove the front bumper (see «FRONT BUMPER REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/exterior-body-panels/#bumpers__front-bumper-removalinstallation) ).
2. Remove the ATF cooler mounting bolts (A), and disconnect the ATF cooler hoses (B), then replace the ATF cooler (C).
3. Connect the ATF cooler hoses (see «ATF COOLER HOSE REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
4. Install the ATF cooler.
5. Install the front bumper (see «FRONT BUMPER REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/exterior-body-panels/#bumpers__front-bumper-removalinstallation) ).
6. Check the ATF level (see «ATF LEVEL CHECK»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-level-check) ).

ATF Filter Replacement

Note. The ATF filter is not a scheduled maintenance item. Replace the filter only if it is leaking, or contaminated, or when the transmission is being overhauled or replaced with a remanufactured unit.

Scheme 312

Scheme 313

Scheme 314

1. Raise the vehicle on a lift, and make sure it is securely supported.
2. Remove the engine under cover (A) and the front splash shield (B).
3. Remove the drain plug (A), and drain the ATF.
4. Reinstall the drain plug with a new sealing washer (B).
5. Remove the harness clamp (A) from the ATF filter holder (B).
6. Disconnect the ATF cooler hoses (C) from the ATF filter (D).
7. Remove the ATF filter holder, and remove the ATF filter.
8. Install a new ATF filter, and secure it with its holder and bolt.
9. Connect the ATF cooler hose (see «ATF COOLER HOSE REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
10. Install the harness clamp to the ATF filter holder.
11. Install the front splash shield and the engine under cover.
12. Refill the transmission with ATF (see «ATF REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__atf-replacement) ).

Scheme 315

Scheme 316

Scheme 317

Scheme 318

Scheme 319

Scheme 320

1. Move the shift lever to R.
2. Remove the shift lever knob (see «SHIFT LEVER KNOB REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__shift-lever-knob-replacement) ).
3. Remove the A/T shift panel (see step 2 on A/T SHIFT PANEL REPLACEMENT ).
4. Release the lock tab (A) using a screwdriver, and remove the A/T gear position indicator (B).
5. Remove the center console (see «CENTER CONSOLE REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#consoles__center-console-removalinstallation) ).
6. Remove the nut securing the shift cable end.
7. Unlock the retainer lock (A).
8. Rotate the socket holder retainer (A) counterclockwise (B) until it stops, and push the retainer lock (C) into the socket holder retainer to lock the retainer.
9. Slide the socket holder (A) away from the bracket as shown to remove the shift cable (B) from the shift cable bracket (C). Do not remove the shift cable by pulling the shift cable guide (D).
10. Disconnect the shift lever 6P connector (A), and remove the shift lever 6P connector from the shift lever bracket base (B).
11. Remove the shift lever mounting bolts (C), then remove the shift lever assembly (D).

Scheme 321

Scheme 322

Scheme 323

Scheme 324

Scheme 325

Scheme 326

Scheme 327

Scheme 328

Scheme 329

Scheme 330

Scheme 331

1. Install the shift lever assembly (A).
2. Connect the shift lever 6P connector (B).
3. Install the shift lever 6P connector on the shift lever bracket base (C).
4. Push the shift cable (A) until it stops, then release it. Pull the shift cable back one step from the P position so that the shift position is in R. Do not hold the shift cable guide (B) to adjust the shift cable.
5. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, and check that the R position indicator comes on.
6. Place the shift lever in P, and turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
7. Place the shift lever in R; the lock pin (A) must be in the position of the arrowed mark (B), then insert a 6.0 mm (0.236 in) pin (C) into the positioning hole (D) on the shift lever positioning guide, and into the positioning hole on the shift lever bracket. Use only a 6.0 mm (0.236 in) pin with no burrs.
8. Align the shift cable slot (A) between the socket holder (B) and the socket holder retainer (C) with the opening (D) in the shift cable bracket (E), then slide the holder into the bracket while installing the shift cable end (F) over the mounting stud (G) by aligning its square hole with the square fitting (H) at the bottom of the stud. Do not install the shift cable by holding the shift cable guide (I). NOTE: When the socket holder is installed in the shift cable bracket, the retainer lock is unhinged and releases the holder retainer lock, then the holder retainer returns under spring force to secure the shift cable.
9. Push the retainer lock (A) fully to lock the socket holder retainer (B), and make sure that the retainer lock fits into the hinged-joint (C). If the retainer lock does not fit with the edge of the hinged-joint, rotate the holder retainer counterclockwise while pushing the retainer lock until it locks.
10. Make sure the shift cable end (A) is properly installed on the mounting stud (B). If the cable end is out of position with the mounting stud, remove the shift cable from the shift cable bracket, then reinstall the cable end over the mounting stud before reinstalling the shift cable to the shift cable bracket. Do not install the shift cable end on the mounting stud with the shift cable installed on the shift cable bracket. If the shift cable end does not ride at the bottom of the mounting stud, rotate the stud to align the square fitting with the hole. Properly installed: Cable end rides at the bottom of the mounting stud. Improperly installed: Cable end out of position with the mounting stud. Cable end out of alignment with the mounting stud.
11. Install and tighten the nut (A) on the shift cable end.
12. Remove the 6.0 mm (0.236 in) pin (B) that was installed to hold the shift lever.
13. Install the center console (see «CENTER CONSOLE REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#consoles__center-console-removalinstallation) ).
14. Route the harnesses on the A/T shift panel (A), and install the A/T gear position indicator (B) in the A/T shift panel.
15. Install the A/T shift panel (see step 8 on A/T SHIFT PANEL REPLACEMENT ).
16. Install the shift lever knob (see «SHIFT LEVER KNOB REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__shift-lever-knob-replacement) ).
17. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode. Move the shift lever to each position, and check that the A/T gear position indicator follows the transmission range switch.
18. Shift the shift lever to P, and check that the shift lock works properly. Push the shift lock release, and check that the shift lever releases, and also check that the shift lever locks when it is shifted back to P. If equipped, check that the key does not come out in any other position other than P.

Shift Lever Knob Replacement

Note. Make sure not to get any silicone grease on the terminal part of the connectors and switches, especially if you have silicone grease on your hands or gloves.

Scheme 332

Scheme 333

1. Grasp the shift lever boot ring, and slip it out of the shift lever knob.
2. Wrap the end of a flat-tipped screwdriver with tape, pry the shift lever knob cover locks (A), and remove the shift lever knob cover (B).
3. Remove the screws (C), and remove the shift lever knob (D).
4. Apply silicone grease to the top (E) of the shift lever rod.
5. Install a new shift lever knob on the shift lever, and secure it with new screws.
6. Install the shift lever knob cover on the shift lever knob.
7. Slide the shift lever boot ring over the shift lever knob until it snaps on.

Shift Lever Disassembly/Reassembly

Note. Make sure not to get any silicone grease on the terminal part of the connectors and switches, especially if you have silicone grease on your hands or gloves.

Scheme 334

Scheme 335

Scheme 336

Scheme 337

Scheme 338

Scheme 339

Scheme 340

1. Remove the shift lever knob (see «SHIFT LEVER KNOB REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__shift-lever-knob-replacement) ).
2. Apply protective tape (A) to the center console panel (B) along the side edge of the A/T shift panel (C). Pry up on the edge of the A/T shift panel with a flat-tipped screwdriver wrapped with protective tape to release the hooks (D). Then remove the A/T shift panel.
3. Release the lock tab (A) using a screwdriver, and remove the A/T gear position indicator (B).
4. Release the lock tabs (A) on the shift lever boot using a screwdriver.
5. Replace the A/T shift panel (A).
6. Install the shift lever boot (B) on the A/T shift panel.
7. Route the harnesses on the A/T shift panel (A), and install the A/T gear position indicator (B) in the A/T shift panel.
8. Install the A/T shift panel (A) on the center console panel (B).
9. Install the shift lever knob (see «SHIFT LEVER KNOB REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__shift-lever-knob-replacement) ).

Scheme 341

Scheme 342

1. Remove the shift lever knob (see «SHIFT LEVER KNOB REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__shift-lever-knob-replacement) ).
2. Remove the A/T shift panel (see step 2 on A/T SHIFT PANEL REPLACEMENT ).
3. Release the lock tabs (A) on the shift lever boot using a screw driver.
4. Replace the shift lever boot (A).
5. Install the shift lever boot on the A/T shift panel (B).
6. Install the A/T shift panel (see step 8 on A/T SHIFT PANEL REPLACEMENT ).
7. Install the shift lever knob (see «SHIFT LEVER KNOB REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__shift-lever-knob-replacement) ).

Scheme 343

Scheme 344

Scheme 345

Scheme 346

Scheme 347

Scheme 348

Scheme 349

Scheme 350

Scheme 351

Scheme 352

1. Move the shift lever to R.
2. Remove the shift lever knob (see «SHIFT LEVER KNOB REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__shift-lever-knob-replacement) ).
3. Remove the A/T shift panel (see step 2 on A/T SHIFT PANEL REPLACEMENT ).
4. Release the lock tab (A) using a screwdriver, and remove the A/T gear position indicator (B).
5. Remove the center console (see «CENTER CONSOLE REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#consoles__center-console-removalinstallation) ).
6. Remove the nut (A) securing the shift cable end (B).
7. Unlock the retainer lock (A).
8. Rotate the socket holder retainer (A) counterclockwise (B) until it stops, and push the retainer lock (C) into the socket holder retainer to lock the retainer.
9. Slide the socket holder (A) away from the bracket as shown in illustration to remove the shift cable (B) from the shift cable bracket (C). Do not remove the shift cable by pulling the shift cable guide (D).
10. Do the battery removal procedure (see «BATTERY REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/body-electrical/#battery) ).
11. Remove the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system) ).
12. Remove the intake air duct (see step 8 on TRANSMISSION REMOVAL ).
13. Remove the battery heat shield (see step 9 on TRANSMISSION REMOVAL ).
14. Remove the auxiliary under-hood fuse/relay box (see step 10 on TRANSMISSION REMOVAL ).
15. Remove the battery base (see step 11 on TRANSMISSION REMOVAL ).
16. Remove the spring clip (A) and the control pin (B), then separate the shift cable end (C) from the control lever (D).
17. Remove the nuts (A) securing the shift cable bracket (B).
18. Raise the vehicle on a lift, or apply the parking brake, block both rear wheels, and raise the front of the vehicle. Make sure it is securely supported.
19. Remove the nuts securing the shift cable bracket (A).
20. Remove the shift cable grommet (B), and pull out the shift cable (C).
21. Insert a new shift cable through the grommet hole (D), and install the grommet in its hole. Do not bend the shift cable excessively.
22. Install the shift cable bracket.
23. Install the shift cable bracket (A).
24. Attach the shift cable end (A) to the control lever (B), then insert the control pin (C) into the control lever hole through the shift cable end, and secure the control pin with the spring clip (D).
25. Install the battery base (see step 66 on TRANSMISSION INSTALLATION ).
26. Install the auxiliary under-hood fuse/relay box (see step 67 on TRANSMISSION INSTALLATION ).
27. Install the battery heat shield (see step 68 on TRANSMISSION INSTALLATION ).
28. Install the intake air duct (see step 69 on TRANSMISSION INSTALLATION ).
29. Install the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system) ).
30. Do the battery installation procedure (see «BATTERY REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/body-electrical/#battery) ).
31. Adjust the shift cable on the shift lever (see «SHIFT CABLE ADJUSTMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).

Scheme 353

Scheme 354

Scheme 355

Scheme 356

Scheme 357

Scheme 358

Scheme 359

Scheme 360

Scheme 361

Scheme 362

Scheme 363

Scheme 364

Scheme 365

Scheme 366

Scheme 367

1. Move the shift lever to R.
2. Remove the shift lever knob (see «SHIFT LEVER KNOB REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__shift-lever-knob-replacement) ).
3. Remove the A/T shift panel (see step 2 on A/T SHIFT PANEL REPLACEMENT ).
4. Release the lock tab (A) using a screwdriver, and remove the A/T gear position indicator (B).
5. Remove the center console (see «CENTER CONSOLE REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#consoles__center-console-removalinstallation) ).
6. Remove the nut (A) securing the shift cable end (B).
7. Unlock the retainer lock (A).
8. Rotate the socket holder retainer (A) counterclockwise (B) until it stops, and push the retainer lock (C) into the socket holder retainer to lock the retainer.
9. Slide the socket holder (A) away from the bracket as shown in illustration to remove the shift cable (B) from the shift cable bracket (C). Do not remove the shift cable by pulling the shift cable guide (D).
10. Push the shift cable (A) until it stops, then release it. Pull the shift cable back one step so that the shift position is in R. Do not hold the shift cable guide (B) to adjust the shift cable.
11. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, and check that the R position indicator comes on.
12. Place the shift lever in P, and turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
13. Place the shift lever in R; the lock pin (A) must be in the position of the arrowed mark (B), then insert a 6.0 mm (0.236 in) pin (C) into the positioning hole (D) on the shift lever positioning guide, and into the positioning hole on the shift lever bracket. Use only a 6.0 mm (0.236 in) pin with no burrs.
14. Align the shift cable slot (A) between the socket holder (B) and the socket holder retainer (C) with the opening (D) in the shift cable bracket (E), then slide the holder into the bracket while installing the shift cable end (F) over the mounting stud (G) by aligning its square hole with the square fitting (H) at the bottom of the stud. Do not install the shift cable by holding the shift cable guide (I). NOTE: When the socket holder is installed in the shift cable bracket, the retainer lock is unhinged and releases the holder retainer lock, then the holder retainer returns under spring force to secure the shift cable.
15. Push the retainer lock (A) fully to lock the socket holder retainer (B), and make sure that the retainer lock fits into the hinged-joint (C). If the retainer lock does not fit with the edge of the hinged-joint, rotate the holder retainer counterclockwise while pushing the retainer lock until it locks.
16. Make sure the shift cable end (A) is properly installed on the mounting stud (B). If the cable end is out of position with the mounting stud, remove the shift cable from the shift cable bracket, then reinstall the cable end over the mounting stud before reinstalling the shift cable to the shift cable bracket. Do not install the shift cable end on the mounting stud with the shift cable installed on the shift cable bracket. If the shift cable end does not ride at the bottom of the mounting stud, rotate the stud to align the square fitting with the hole. Properly installed: Cable end rides at the bottom of the mounting stud. Improperly installed: Cable end out of position with the mounting stud. Cable end out of alignment with the mounting stud.
17. Install and tighten the nut (A) on the shift cable end.
18. Remove the 6.0 mm (0.236 in) pin (B) that was installed to hold the shift lever.
19. Install the center console (see «CENTER CONSOLE REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#consoles__center-console-removalinstallation) ).
20. Route the harnesses on the A/T shift panel (A), and install the A/T gear position indicator (B) in the A/T shift panel.
21. Install the A/T shift panel (see step 8 on A/T SHIFT PANEL REPLACEMENT ).
22. Install the shift lever knob (see «SHIFT LEVER KNOB REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__shift-lever-knob-replacement) ).
23. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode. Move the shift lever to each position, and check that the A/T gear position indicator follows the transmission range switch.
24. Shift the shift lever to P, and check that the shift lock works properly. Push the shift lock release, and check that the shift lever releases, and also check that the shift lever locks when it is shifted back to P. If equipped, check that the key does not come out in any other position other than P.

Scheme 368

Scheme 369

Scheme 370

Scheme 371

1. Do the battery removal procedure (see «BATTERY REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/body-electrical/#battery) ).
2. Remove the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system) ).
3. Remove the intake air duct (see step 8 on TRANSMISSION REMOVAL ).
4. Remove the battery heat shield (see step 9 on TRANSMISSION REMOVAL ).
5. Remove the auxiliary under-hood fuse/relay box (see step 10 on TRANSMISSION REMOVAL ).
6. Remove the battery base (see step 11 on TRANSMISSION REMOVAL ).
7. Disconnect the transmission range switch connector.
8. Check for continuity between the terminals at the transmission range switch connector. There should be continuity between the terminals in the following table for each transmission range switch position. Transmission Range Switch Connector
9. The transmission range switch test is finished if the test results are OK. Reinstall all removed components. If there is no continuity between any terminals, check the transmission range switch installation. If the switch installation is OK, replace the switch (see «TRANSMISSION RANGE SWITCH REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
10. Install the battery base (see step 66 on TRANSMISSION INSTALLATION ).
11. Install the auxiliary under-hood fuse/relay box (see step 67 on TRANSMISSION INSTALLATION ).
12. Install the battery heat shield (see step 68 on TRANSMISSION INSTALLATION ).
13. Install the intake air duct (see step 69 on TRANSMISSION INSTALLATION ).
14. Install the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system) ).
15. Do the battery installation procedure (see «BATTERY REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/body-electrical/#battery) ).

Scheme 372

Scheme 373

Scheme 374

Scheme 375

Scheme 376

Scheme 377

Scheme 378

Scheme 379

Scheme 380

1. Do the battery removal procedure (see «BATTERY REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/body-electrical/#battery) ).
2. Remove the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system) ).
3. Remove the intake air duct (see step 8 on TRANSMISSION REMOVAL ).
4. Remove the battery heat shield (see step 9 on TRANSMISSION REMOVAL ).
5. Remove the auxiliary under-hood fuse/relay box (see step 10 on TRANSMISSION REMOVAL ).
6. Remove the battery base (see step 11 on TRANSMISSION REMOVAL ).
7. Remove the spring clip (A) and the control pin (B), then separate the shift cable end (C) from the control lever (D).
8. Check the bushing (E) in the shift cable end for a proper fit and wear. If the bushing is loose or worn, replace the shift cable (see «SHIFT CABLE REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
9. Disconnect the transmission range switch connector.
10. Remove the nuts (A) securing the shift cable bracket (B).
11. Remove the transmission range switch.
12. Turn the control lever fully counterclockwise to the P position. Turn the control lever back two click-stopped positions so that the selector control shaft is in the N position.
13. Set a new transmission range switch (A) to the N position. Align the cutouts (B) on the rotary-frame with the neutral positioning cutouts (C) on the transmission range switch, then put a 2.0 mm (0.079 in) feeler gauge blade (D) in the cutouts to hold the transmission range switch in the N position. NOTE: Be sure to use a 2.0 mm (0.079 in) feeler gauge blade or equivalent to hold the transmission range switch in the N position.
14. Install the transmission range switch (A) gently on the selector control shaft (B) while holding it in the N position with the 2.0 mm (0.079 in) blade (C).
15. Tighten the bolts on the transmission range switch while you continue to hold the N position. Do not move the transmission range switch when tightening the bolts. Then remove the feeler gauge.
16. Check the connectors for corrosion, dirt, or oil, and clean or repair if necessary, then connect the connector securely.
17. Install the shift cable bracket (A).
18. Apply molybdenum grease to the hole in the bushing (A) in the shift cable end (B).
19. Attach the shift cable end to the control lever (C), then insert the control pin (D) into the control lever hole through the shift cable end, and secure the control pin with the spring clip (E).
20. Install the battery base (see step 66 on TRANSMISSION INSTALLATION ).
21. Install the auxiliary under-hood fuse/relay box (see step 67 on TRANSMISSION INSTALLATION ).
22. Install the battery heat shield (see step 68 on TRANSMISSION INSTALLATION ).
23. Install the intake air duct (see step 69 on TRANSMISSION INSTALLATION ).
24. Install the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/mechanical/#intake-manifold-and-exhaust-system) ).
25. Do the battery installation procedure (see «BATTERY REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/body-electrical/#battery) ).
26. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode. Move the shift lever through all positions, and verify the transmission range switch matches with the A/T gear position indicator.
27. Check that the engine starts in P and N, and does not start in any other shift lever position.
28. Check that the back-up lights come on when the shift lever is in R.
29. Raise the vehicle on a lift, make sure it is securely supported, and allow all four wheels to rotate freely. Then start the engine, and check the shift lever operation.

Paddle Shifter + (Upshift Switch) Circuit Troubleshooting

SRS components are located in this area. Review the SRS component locations (see COMPONENT LOCATION INDEX ) and the precautions and procedures (see PRECAUTIONS AND PROCEDURES ) before doing repair or service.

Scheme 381

Scheme 382

Scheme 383

Scheme 384

Scheme 385

Scheme 386

Scheme 387

1. Remove the steering wheel (see «STEERING WHEEL REMOVAL»(/acura/zdx/i-2009-2013/remont/manual-power-steering/#power-steering-system__steering-wheel-removal) ).
2. Check for continuity between cable reel connector C terminals No. 12 and No. 15 when pressing the paddle shifter + (upshift switch) and when the paddle shifter + (upshift switch) is released. Is there continuity when pressing the paddle shifter + (upshift switch) and no continuity when the paddle shifter + (upshift switch) is released? YES -Go to step 5 . NO -Go to step 3.
3. Disconnect the paddle shifter + (upshift switch) connector.
4. Check for continuity between paddle shifter + (upshift switch) connector terminals No. 3 and No. 4 when pressing the paddle shifter + (upshift switch) and when the paddle shifter + (upshift switch) is released. Is there continuity when pressing the paddle shifter + (upshift switch) and no continuity when the paddle shifter + (upshift switch) is released? YES -Replace the cable reel subharness. NO -Replace the paddle shifter + (upshift switch) (see «PADDLE SHIFTER REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__paddle-shifter-replacement) ).
5. Remove the cable reel (see «CABLE REEL REPLACEMENT»(/acura/zdx/i-2009-2013/remont/airbag/#srs-supplemental-restraint-system) ).
6. Check for continuity between cable reel connector A terminal No. 2 and body ground. Is there continuity? YES -Go to step 7. NO -Repair an open in the wire between cable reel connector A terminal No. 2 and body ground (G405), or repair poor body ground (G405).
7. Check for continuity between cable reel connector A terminal No. 15 and body ground. Is there continuity? YES -Repair a short to body ground in wire between cable reel connector A terminal No. 15 and PCM connector terminal A36. NO -Go to step 8.
8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
9. Measure the voltage between cable reel connector A terminals No. 2 and No. 15. Is there battery voltage? YES -Replace the cable reel (see «CABLE REEL REPLACEMENT»(/acura/zdx/i-2009-2013/remont/airbag/#srs-supplemental-restraint-system) ). NO -Go to step 10.
10. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
11. Jump the SCS line with the HDS.
12. Disconnect PCM connector A (49P).
13. Connect cable reel connector A terminal No. 15 to body ground with a jumper wire.
14. Check for continuity between PCM connector terminal A36 and body ground. Is there continuity? YES -Check for loose or poor connections at PCM connector terminal A36. If the connection is OK, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ) and recheck. NO -Repair an open in the wire between PCM connector terminal A36 and cable reel connector A.

Paddle Shifter - (Downshift Switch) Circuit Troubleshooting

SRS components are located in this area. Review the SRS component locations (see COMPONENT LOCATION INDEX ) and the precautions and procedures (see PRECAUTIONS AND PROCEDURES ) before doing repair or service.

Scheme 388

Scheme 389

Scheme 390

Scheme 391

Scheme 392

Scheme 393

Scheme 394

1. Remove the steering wheel (see «STEERING WHEEL REMOVAL»(/acura/zdx/i-2009-2013/remont/manual-power-steering/#power-steering-system__steering-wheel-removal) ).
2. Check for continuity between cable reel connector C terminals No. 8 and No. 17 when pressing the paddle shifter - (downshift switch) and when the paddle shifter - (downshift switch) is released. Is there continuity when pressing the paddle shifter - (downshift switch) and no continuity when the paddle shifter - (downshift switch) is released? YES -Go to step 5 . NO -Go to step 3.
3. Disconnect the paddle shifter - (downshift switch) connector.
4. Check for continuity between paddle shifter - (downshift switch) connector terminals No. 3 and No. 4 when pressing the paddle shifter - (downshift switch) and when the paddle shifter - (downshift switch) is released. Is there continuity when pressing the paddle shifter - (downshift switch) and no continuity when the paddle shifter - (downshift switch) is released? YES -Replace the cable reel subharness. NO -Replace the paddle shifter - (downshift switch) (see «PADDLE SHIFTER REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__paddle-shifter-replacement) ).
5. Remove the cable reel (see «CABLE REEL REPLACEMENT»(/acura/zdx/i-2009-2013/remont/airbag/#srs-supplemental-restraint-system) ).
6. Check for continuity between cable reel connector A terminal No. 5 and body ground. Is there continuity? YES -Go to step 7. NO -Repair an open in the wire between cable reel connector A terminal No. 5 and body ground (G402), or repair poor body ground (G402).
7. Check for continuity between cable reel connector A terminal No. 17 and body ground. Is there continuity? YES -Repair a short to body ground in the wire between cable reel connector A terminal No. 17 and PCM connector terminal A37. NO -Go to step 8.
8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
9. Measure the voltage between cable reel connector A terminals No. 5 and No. 17. Is there battery voltage? YES -Replace the cable reel (see «CABLE REEL REPLACEMENT»(/acura/zdx/i-2009-2013/remont/airbag/#srs-supplemental-restraint-system) ). NO -Go to step 10.
10. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
11. Jump the SCS line with the HDS.
12. Disconnect PCM connector A (49P).
13. Connect cable reel connector A terminal No. 17 to body ground with a jumper wire.
14. Check for continuity between PCM connector terminal A37 and body ground. Is there continuity? YES -Check for loose or poor connections at PCM connector terminal A37. If the connection is OK, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ) and recheck. NO -Repair an open in the wire between PCM connector terminal A37 and cable reel connector A.

Paddle Shifter Illumination Circuit Troubleshooting

SRS components are located in this area. Review the SRS component locations (see COMPONENT LOCATION INDEX ) and the precautions and procedures (see PRECAUTIONS AND PROCEDURES ) before doing repair or service.

Scheme 395

Scheme 396

Scheme 397

1. Remove the driver's airbag (see «DRIVER'S AIRBAG REPLACEMENT»(/acura/zdx/i-2009-2013/remont/airbag/#srs-supplemental-restraint-system__drivers-airbag-replacement) ).
2. Disconnect the paddle shifter connector.
3. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, and turn the combination light switch to the SMALL (PARKING) position.
4. Measure the voltage between paddle shifter connector terminal No. 1 and body ground. Is there battery voltage? YES -Go to step 8 . NO -Go to step 5.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode, and turn the combination light switch to the OFF position.
6. Check the No. 6 (7.5 A) fuse in the passenger's under-dash fuse/relay box. Is the fuse OK? YES -Repair an open in the wire between paddle shifter connector terminal No. 1 and the passenger's under-dash fuse/relay box. NO -Go to step 7.
7. Check for continuity between paddle shifter connector terminal No. 1 and body ground. Is there continuity? YES -Repair a short to body ground in the wire between paddle shifter connector terminal No. 1 and the passenger's under-dash fuse/relay box. NO -Install a new No. 6 (7.5 A) fuse in the passenger's under-dash fuse/relay box, then go to step 4 .
8. Remove the gauge control module (see «GAUGE CONTROL MODULE REPLACEMENT»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#gauges__gauge-control-module-replacement) ).
9. Check for continuity between paddle shifter connector terminal No. 2 and gauge control module connector A (32P) terminal No. 21. Is there continuity? YES -Check the illumination control circuit in the gauge control module self-diagnostic function (see «SELF-DIAGNOSTIC FUNCTION»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#gauges__self-diagnostic-function) ). If the test results are OK, replace the paddle shifter (see «PADDLE SHIFTER REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__paddle-shifter-replacement) ). NO -Repair an open in the wire between paddle shifter connector terminal No. 2 and the gauge control module.

Paddle Shifter Replacement

SRS components are located in this area. Review the SRS component locations (see COMPONENT LOCATION INDEX ) and the precautions and procedures (see PRECAUTIONS AND PROCEDURES ) before doing repair or service.

Scheme 398

Scheme 399

Scheme 400

1. Remove the steering wheel (see «STEERING WHEEL REMOVAL»(/acura/zdx/i-2009-2013/remont/manual-power-steering/#power-steering-system__steering-wheel-removal) ).
2. Remove the four screws (A) securing the steering wheel rear cover (B).
3. Pull the snap-fit portion (C) up carefully, then remove the steering wheel rear cover.
4. Remove the paddle shifter connector (A) from the clamp bracket (B), and disconnect the paddle shifter connector.
5. Remove the paddle shifter + (upshift switch) (A) or the paddle shifter - (downshift switch) (B), then replace it.
6. Route the harness and connect the paddle shifter connector securely, and install the connector to the clamp bracket.
7. Install the steering wheel rear cover.
8. Install the steering wheel (see «STEERING WHEEL INSTALLATION»(/acura/zdx/i-2009-2013/remont/manual-power-steering/#power-steering-system__steering-wheel-installation) ).

A/T Gear Position Indicator Replacement

Note. The A/T gear position indicator, the park pin switch, and the shift lock solenoid harness are not available separately. Replace the A/T gear position indicator, the park pin switch, and the shift lock solenoid harness as a set.

Scheme 401

Scheme 402

1. Remove the shift lever assembly (see «SHIFT LEVER REMOVAL»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
2. Remove the shift lock solenoid, and disconnect the shift lock solenoid connector (see «SHIFT LOCK SOLENOID REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__shift-lock-solenoid-replacement) ).
3. Remove the harness wire ties (A).
4. Remove the park pin switch (B), and replace the A/T gear position indicator/park pin switch/shift lock solenoid harness assembly (C).
5. Connect the shift lock solenoid connector, and install the shift lock solenoid in the shift lever (see «SHIFT LOCK SOLENOID REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__shift-lock-solenoid-replacement) ).
6. Route the harnesses as shown in illustration. Take the slack out of the harnesses, and secure the harnesses with the harness wire ties (A).
7. Install the shift lever assembly (see «SHIFT LEVER INSTALLATION»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).

Scheme 403

Scheme 404

Shift Lock System Circuit Troubleshooting

Note. Check for A/T DTCs. If any DTCs are present, troubleshoot those first.

Scheme 405

Scheme 406

Scheme 407

Scheme 408

Scheme 409

Scheme 410

Scheme 411

Scheme 412

1. Connect the HDS to the DLC (A) located under the driver's side of the dashboard.
2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode. Make sure the HDS communicates with the PCM. If it does not, go to the DLC circuit troubleshooting (see «DLC CIRCUIT TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/communication-devices/#communication-systems-f-can-k-line__dlc-circuit-troubleshooting) ).
3. Select Shift Lock Solenoid Test in the Miscellaneous Test Menu, and check that the shift lock solenoid operates with the HDS. Does the shift lock solenoid work properly? YES -Go to step 16 . NO -Go to step 4.
4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
5. Remove the center console (see «CENTER CONSOLE REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#consoles__center-console-removalinstallation) ).
6. Disconnect the shift lock solenoid connector (see «SHIFT LOCK SOLENOID REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__shift-lock-solenoid-replacement) ).
7. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
8. Measure the voltage between shift lock solenoid connector terminal No. 1 and body ground. Is there battery voltage? YES -Go to step 9. NO -Check for a blown No. 12 (7.5 A) fuse in the driver's under-dash fuse/relay box. If the fuse is OK, repair an open in the wire between shift lock solenoid connector terminal No. 1 and the driver's under-dash fuse/relay box.
9. With the shift lever in P, press the brake pedal. Do not press the accelerator pedal.
10. Measure the voltage between shift lock solenoid connector terminals No. 1 and No. 2 while pressing the brake pedal. Is there battery voltage? YES -Go to step 11. NO -Go to step 12 .
11. Release the brake pedal, and measure the voltage between shift lock solenoid connector terminals No. 1 and No. 2. The shift lever must be in P. Is there battery voltage? YES -Repair a short to body ground in the wire between PCM connector terminal A2 and the shift lock solenoid connector. NO -Check the shift lock mechanism. If the mechanism is OK, replace the shift lock solenoid (see «SHIFT LOCK SOLENOID REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__shift-lock-solenoid-replacement) ).
12. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
13. Jump the SCS line with the HDS.
14. Disconnect PCM connector A (49P).
15. Check for continuity between PCM connector terminal A2 and shift lock solenoid connector terminal No. 2. Is there continuity? YES -Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ), and recheck. If the symptom goes away with a known-good PCM, replace the original PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). NO -Repair an open in the wire between PCM connector terminal A2 and the shift lock solenoid connector.
16. Monitor the Brake Switch in the Data List with the HDS, and press the brake pedal. Is the Brake Switch ON? YES -Go to step 21 . NO -If the brake lights come on, go to step 17. If the brake lights do not work, repair faulty brake light circuit.
17. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
18. Jump the SCS line with the HDS.
19. Disconnect PCM connector A (49P).
20. Measure the voltage between PCM connector terminal A8 and body ground while pressing the brake pedal and when the brake pedal is released. Is there battery voltage while pressing the brake pedal and about 0 V when the pedal is released? YES -Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ), and recheck. If the symptom goes away with a known-good PCM, replace the original PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). NO -Repair an open in the wire between PCM connector terminal A8 and the brake pedal position switch.
21. Monitor the A/T P Switch in the Data List with the HDS with the shift lever in P. Is the A/T P Switch ON? YES -Go to step 31 . NO -Go to step 22.
22. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
23. Disconnect the transmission range switch connector.
24. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
25. Connect a jumper wire between transmission range switch connector terminal No. 7 and body ground.
26. Check the ATPP switch signal with the HDS. Is the ATPP switch on? YES -Replace the transmission range switch (see «TRANSMISSION RANGE SWITCH REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ). NO -Go to step 27.
27. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
28. Jump the SCS line with the HDS.
29. Disconnect PCM connector A (49P).
30. Check for continuity between PCM connector terminal A16 and transmission range switch connector terminal No. 7. Is there continuity? YES -Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ), and recheck. If the symptom goes away with a known-good PCM, replace the original PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). NO -Repair an open in the wire between PCM connector terminal A16 and the transmission range switch connector.
31. Check APP Sensor A in the Data List with the HDS. Do not press the accelerator pedal. Is the APP Sensor (%) opening 5 % or more, or is APP Sensor A (V) 1.16 V or higher? YES -Check the APP Sensor (see «APP SENSOR SIGNAL INSPECTION»(/acura/zdx/i-2009-2013/remont/engine-control-systems/#electronic-throttle-control-system__app-sensor-signal-inspection) ). NO -Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-pcm) ), and recheck. If the symptom goes away with a known-good PCM, replace the original PCM (see «PCM REPLACEMENT»(/acura/zdx/i-2009-2013/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ).

Scheme 413

1. Connect the HDS to the DLC (A) located under the driver's side of the dashboard.
2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode. Make sure the HDS communicates with the PCM. If it does not, go to the DLC circuit troubleshooting (see «DLC CIRCUIT TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/communication-devices/#communication-systems-f-can-k-line__dlc-circuit-troubleshooting) ).
3. Select the Shift Lock Solenoid Test in the Miscellaneous Test Menu, and check that the shift lock solenoid operates with the HDS.
4. Check that the shift lever can be moved out of P when the Shift Lock Solenoid is ON. Move the shift lever back to P, and check that it locks when the Shift Lock Solenoid is OFF.
5. Check that the shift lock releases when the shift lock release is pushed, and check that it locks when the shift lock release is released.
6. If the shift lock solenoid does not work properly, go to the «SHIFT LOCK SYSTEM TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__shift-lock-system-circuit-troubleshooting) (see ).

Shift Lock Solenoid Replacement

Note. Make sure not to get any silicone grease on the terminal part of the connectors and switches, especially if you have silicone grease on your hands or gloves.

Scheme 414

Scheme 415

1. Remove the shift lever knob (see «SHIFT LEVER KNOB REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__shift-lever-knob-replacement) ).
2. Remove the center console (see «CENTER CONSOLE REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#consoles__center-console-removalinstallation) ).
3. Remove the shift lever assembly (see «SHIFT LEVER REMOVAL»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
4. Release the lock tabs retaining the shift lock solenoid using thin-bladed screwdrivers.
5. Insert a 6.0 mm (0.236 in) pin (A), and push the shift lock solenoid (B) out.
6. Disconnect the shift lock solenoid connector (C), and replace the shift lock solenoid.
7. Apply silicone grease to the tip (D) of the shift lock stop and the solenoid plunger hole (E).
8. Connect the shift lock solenoid connector.
9. Install the shift lock solenoid by aligning the joint of the shift lock solenoid plunger with the tip of the shift lock stop, then push the shift lock solenoid into the shift lever securely.
10. Install the shift lever assembly (see «SHIFT LEVER INSTALLATION»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
11. Install the center console (see «CENTER CONSOLE REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#consoles__center-console-removalinstallation) ).
12. Install the shift lever knob (see «SHIFT LEVER KNOB REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__shift-lever-knob-replacement) ).

Shift Lock Stop/Shift Lock Stop Cushion Replacement

Note. Make sure not to get any silicone grease on the terminal part of the connectors and switches, especially if you have silicone grease on your hands or gloves.

Scheme 416

1. Remove the shift lever assembly (see «SHIFT LEVER REMOVAL»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
2. Remove the shift lock solenoid, and disconnect the shift lock solenoid connector (see «SHIFT LOCK SOLENOID REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__shift-lock-solenoid-replacement) ).
3. Remove the shift lock stop (A) and the stop cushion (B) as a set.
4. Apply silicone grease to the pin on the shift lever bracket, and install a new shift lock stop over the pin.
5. Connect the shift lock solenoid connector, and install the shift lock solenoid in the shift lever (see «SHIFT LOCK SOLENOID REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__shift-lock-solenoid-replacement) ).
6. Install the shift lever assembly (see «SHIFT LEVER INSTALLATION»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).

Scheme 417

Scheme 418

Scheme 419

1. Remove the shift lever assembly (see «SHIFT LEVER REMOVAL»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
2. Release the lock (A) of the shift lock release (B), then remove the shift lock release.
3. Remove the release spring (A) from the shift lock release (B).
4. Replace the shift lock release or the release spring.
5. Install the shift lock release spring in the shift lock release.
6. Install the shift lock release on the shift lever.
7. Make sure that the release spring end (A) is installed in the shift lock release (B), and the hooked end (C) of the release spring is on the shift lever bracket as shown in illustration.
8. Install the shift lever assembly (see «SHIFT LEVER INSTALLATION»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).

Park Pin Switch Replacement

Note. The park pin switch, the A/T gear position indicator, and the shift lock solenoid harness are not available separately. Replace the park pin switch, the A/T gear position indicator, and the shift lock solenoid harness as a set.

Scheme 420

Scheme 421

1. Remove the shift lever assembly (see «SHIFT LEVER REMOVAL»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).
2. Remove the shift lock solenoid, and disconnect the shift lock solenoid connector (see «SHIFT LOCK SOLENOID REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__shift-lock-solenoid-replacement) ).
3. Remove the harness wire ties (A).
4. Remove the park pin switch (B), and replace the park pin switch/A/T gear position indicator/shift lock solenoid harness assembly (C).
5. Connect the shift lock solenoid connector, and install the shift lock solenoid in the shift lever (see «SHIFT LOCK SOLENOID REPLACEMENT»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission__shift-lock-solenoid-replacement) ).
6. Route the harnesses as shown in illustration. Take the slack out of the harnesses, and secure the harnesses with the harness wire ties (A).
7. Install the shift lever assembly (see «SHIFT LEVER INSTALLATION»(/acura/zdx/i-2009-2013/remont/automatic-trans/#automatic-transmission) ).

Scheme 422

Scheme 423

Scheme 424

Special Tools Required

Mainshaft Holder Set 07PAB-0010001

Note. Refer to the EXPLODED VIEW as needed during the following procedure.

Scheme 425

Scheme 426

Scheme 427

Scheme 428

Scheme 429

Scheme 430

Scheme 431

Scheme 432

Scheme 433

Scheme 434

Scheme 435

Scheme 436

Scheme 437

Scheme 438

Scheme 439

Scheme 440

Scheme 441

Scheme 442

Scheme 443

Scheme 444

Scheme 445

Scheme 446

Scheme 447

Scheme 448

Scheme 449

Scheme 450

Scheme 451

Scheme 452

Scheme 453

1. Remove the ATF dipstick (A), then remove the dipstick tube assembly (B) with the O-rings.
2. Remove the transmission range switch (A).
3. Pry the lock tab of the lock washer (A) on the control lever (B), then remove the bolt, the lock washer, and the control lever.
4. Remove the input shaft (mainshaft) speed sensor (A) and the output shaft (countershaft) speed sensor (B) with the O-rings.
5. Remove the ATF temperature sensor (A) with the O-ring.
6. Remove the ATF outlet line banjo bolt (A) with the sealing washers, and remove the ATF outlet line (B).
7. Remove the ATF filter holder (C) and the ATF inlet line banjo bolt (D) with the sealing washers, and remove the ATF inlet line/ATF hose/ATF filter (E).
8. Remove transmission hanger A.
9. Remove the ATF filter bracket (B), and remove the third shaft end cover (C), the mainshaft end cover (D), and the end covers (E) (two) with the O-rings.
10. Remove transmission fluid pressure switch A (2nd clutch) with the sealing washer.
11. Remove transmission fluid pressure switch D (5th clutch) with the sealing washer.
12. Remove transmission hanger B.
13. Remove transmission fluid pressure switch C (4th clutch) (A) with the sealing washer.
14. Remove shift solenoid valve C (B) with the O-rings.
15. Remove the secondary valve body (A). Remove the ATF pipes (B) with the O-rings, and the gasket (C). NOTE: Do not disassemble the secondary valve body. If any problem occurs, replace the assembly.
16. Install the mainshaft holder onto the mainshaft.
17. Using a chisel, cut the lock tab (A) of the locknut (B) securing the mainshaft and the third shaft locknuts. NOTE: Keep all of the chiseled particles out of the transmission. The illustration shows the mainshaft locknut.
18. Remove the locknuts (A) from the mainshaft (B) and the third shaft (C). NOTE: The third shaft locknut has left-hand threads.
19. Pry the lock washers (D), and remove them. NOTE: Keep all of the particles out of the transmission.
20. Remove the transmission housing mounting bolts (10x1.25 mm bolt (A), 8 x 1.25 mm bolt (B)) and transmission hanger C.
21. While expanding the snap ring of the countershaft bearing with snap ring pliers, lift the transmission housing.
22. Release the snap ring pliers, and remove the transmission housing (A), the two dowel pins (B), and the gasket (C).
23. Remove ATF joint pipes A and B with the O-rings.
24. Remove the ATF strainer (A) with the O-ring.
25. Remove the 10 x 70 mm ATF joint pipe (B) and the ATF lubrication pipe (C).
26. Remove the mainshaft holder from the mainshaft.
27. Pry the lock tab of the lock washer (A) on the shift fork (B), then remove the bolt and the lock washer.
28. Remove the reverse gear (A), the reverse selector hub (B), the shift fork (C), and the baffle plate (D) together.
29. Remove the mainshaft subassembly (A), the countershaft subassembly (B), the secondary shaft subassembly (C), and the idler gear shaft (D) together, and remove the needle bearing (E) from the torque converter housing.
30. Remove the third shaft (A).
31. Remove the parking holder (B).
32. Remove the detent arm (A), the detent arm shaft (B), and the detent arm spring (C).
33. Remove the selector control shaft (A).
34. Remove the differential assembly (B).
35. Remove the transfer output shaft (C) with the thrust shim.
36. Remove the oil catch plate (D), the 2nd air check valve (E), and the 5th air check valve (F).
37. Remove the cooler retainer cap (A).
38. Remove the 3rd air check valve (A), the 6th air check valve (B), the stator shaft support (C), the stator shaft (D), the stator shaft stop (E), and the dowel pins (F) (two).
39. Remove the manual valve body (A) (seven bolts), the dowel pins (B) (two), the manual separator plate (C), and the check balls (D) (two). Do not let the check balls fall out, and do not use a magnet to remove the check balls, it may magnetize them. NOTE: Do not disassemble the manual valve body. If any problem occurs, replace the assembly.
40. Remove the regulator valve body (E) (eight bolts), the dowel pins (F) (two), and the regulator separator plate (G). NOTE: Do not disassemble the regulator valve body. If any problem occurs, replace the assembly.
41. Remove the 4th/reverse air check valve (A) and the main valve body (B) (eight bolts). NOTE: Do not disassemble the main valve body. If any problem occurs, replace the assembly.
42. Remove the ATF pump driven gear shaft (C), then remove the ATF pump driven gear (D) and the ATF pump drive gear (E).
43. Remove the dowel pins (F) (two) and the main separator plate (G).
44. Remove the ATF magnet (H), clean it, then reinstall it in the torque converter housing.
45. Clean the inlet opening (A) of the ATF strainer (B) thoroughly with compressed air, then check that it is good condition and that the inlet opening is not clogged.
46. Check the ATF strainer for clogs, debris, or damage. If the strainer is clogged or damaged, replace it.