A/t System Troubleshooting & Testing: Other Honda Civic IX

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 (tach) (B) will usually blink.

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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), select SCS mode, then the D indicator will indicate (blink) the DTC.

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

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1. Connect the HDS to the DLC. (See the HDS user's manual for specific instructions.)
2. Turn the ignition switch to ON (II). Make sure the HDS communicates with the PCM. If it does not, go to the DLC circuit troubleshooting See DLC CIRCUIT TROUBLESHOOTING (EXCEPT K24Z7) or DLC CIRCUIT TROUBLESHOOTING (K24Z7) .
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. Record 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 the data.
7. 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. 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.

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Note. Check for DTCs. If any DTCs are stored, troubleshoot and clear them first. Do not allow dust or other foreign particles to enter the port while installing the A/T oil pressure gauge. Be sure to check the ATF level after each pressure port test. When installing or removing the A/T oil pressure gauge, ATF may run out of the pressure inspection ports. 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.

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1. HDS DLC - Connection Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard. Turn the ignition switch to ON (II). Make sure the HDS communicates with the vehicle. If it does not communicate, go to the DLC circuit troubleshooting.
2. A/T Line Pressure - Test Line Pressure Test Connect the A/T oil pressure gauge to the line pressure inspection port (A). Start the engine, and warm it up to normal operating temperature (the radiator fan comes on). Run the vehicle in 2nd gear, and measure the low line pressure from the A/T oil pressure gauge while holding the engine speed at 2, 000 rpm. Bring the engine back to an idle, then apply the brake to stop the wheels from rotating. 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. Pressure Fluid Pressure Standard Service Limit Line (Low) 569-608 kPa (5.8-6.2 kgf/cm 2 , 82-88 psi) Lower limit: 520 kPa (5.3 kgf/cm 2 , 75 psi) Upper limit: 657 kPa (6.7 kgf/cm 2 , 95 psi) Line (Normal) 902-961 kPa (9.2-9.8 kgf/cm 2 , 131-139 psi) 853 kPa (8.7 kgf/cm 2 , 124 psi) If the line pressures are out of the service limit, refer to the problem and probable cause(s) listed in the table. Problem Probable cause(s) No or low line pressure Torque converter ATF pump Regulator valve Torque converter check valve Clogged ATF strainer Turn the engine off, then disconnect the A/T oil pressure gauge from the line pressure inspection port. Install the sealing bolt to the line pressure inspection port using a new sealing washer, and tighten the bolt to 18 N.m (1.8 kgf.m, 13 lbf.ft). NOTE: Do not reuse the old sealing washer.
3. A/T 2nd/3rd/5th Clutch Pressure - Test 2nd Clutch Pressure Test Connect the A/T oil pressure gauge to the 2nd clutch pressure inspection port (A). Start the engine, and run the vehicle in 2nd gear. Measure the 2nd clutch pressure from the A/T oil pressure gauge while holding the engine speed at 2, 000 rpm. Pressure Fluid Pressure Standard Service Limit 2nd Clutch 559-618 kPa (5.7-6.3 kgf/cm 2 , 81-90 psi) Lower limit: 510 kPa (5.2 kgf/cm 2 , 74 psi) Upper limit: 667 kPa (6.8 kgf/cm 2 , 97 psi) If the 2nd clutch pressure is out of the service limit, refer to the problem and probable cause(s) listed in the table. Problem Probable cause(s) No or low 2nd clutch pressure 2nd clutch Turn the engine off, then disconnect the A/T oil pressure gauge from the 2nd clutch pressure inspection port. Install the sealing bolt to the 2nd clutch pressure inspection port using a new sealing washer, and tighten the bolt to 18 N.m (1.8 kgf.m, 13 lbf.ft). NOTE: Do not reuse the old sealing washer. 3rd Clutch Pressure Test Connect the A/T oil pressure gauge to the 3rd clutch pressure inspection port (A). Start the engine, and run the vehicle in 3rd gear. Measure the 3rd clutch pressure from the A/T oil pressure gauge while holding the engine speed at 2, 000 rpm. Pressure Fluid Pressure Standard Service Limit 3rd Clutch 559-618 kPa (5.7-6.3 kgf/cm 2 , 81-90 psi) Lower limit: 510 kPa (5.2 kgf/cm 2 , 74 psi) Upper limit: 667 kPa (6.8 kgf/cm 2 , 97 psi) If the 3rd clutch pressure is out of the service limit, refer to the problem and probable cause(s) listed in the table. Problem Probable cause(s) No or low 3rd clutch pressure 3rd clutch Turn the engine off, then disconnect the A/T oil pressure gauge from the 3rd clutch pressure inspection port. Install the sealing bolt to the 3rd clutch pressure inspection port using a new sealing washer, and tighten the bolt to 18 N.m (1.8 kgf.m, 13 lbf.ft). NOTE: Do not reuse the old sealing washer. 5th Clutch Pressure Test - Engaging 5th G ear Connect the A/T oil pressure gauge to the 5th clutch pressure inspection port (A). Start the engine, and run the vehicle in 5th gear. Measure the 5th clutch pressure from the A/T oil pressure gauge while holding the engine speed at 2, 000 rpm. Pressure Fluid Pressure Standard Service Limit 5th Clutch 559-618 kPa (5.7-6.3 kgf/cm 2 , 81-90 psi) Lower limit: 510 kPa (5.2 kgf/cm 2 , 74 psi) Upper limit: 667 kPa (6.8 kgf/cm 2 , 97 psi) If the 5th clutch pressure is out of the service limit, refer to the problem and probable cause(s) listed in the table. Problem Probable cause(s) No or low 5th clutch pressure 5th clutch Bring the engine back to an idle, then apply the brake to stop the wheels from rotating. 5th Clutch Pressure Test - Engaging Reverse G ear Shift to R, then release the brake pedal. Measure the 5th clutch pressure from the A/T oil pressure gauge while holding the engine speed at 2, 000 rpm. Pressure Fluid Pressure Standard Service Limit 5th Clutch in R 892-971 kPa (9.1-9.9 kgf/cm 2 , 129-141 psi) 843 kPa (8.6 kgf/cm 2 , 122 psi) If the 5th clutch pressure is out of the service limit, refer to the problem and probable cause(s) listed in the table. Problem Probable cause(s) No or low 5th clutch pressure in R Servo valve 5th clutch Turn the engine off, then disconnect the A/T oil pressure gauge from the 5th clutch pressure inspection port. Install the sealing bolt to the 5th clutch pressure inspection port using a new sealing washer, and tighten the bolt to 18 N.m (1.8 kgf.m, 13 lbf.ft). NOTE: Do not reuse the old sealing washer.

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1. Air Cleaner Disconnect the intake air duct (A). Remove the air cleaner (B). Remove the harness clamp (C).

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1. A/T 1st/4th Clutch Pressure - Test 1st Clutch Pressure Test Connect the A/T oil pressure gauge to the 1st clutch pressure inspection port (A). Temporarily install the air cleaner housing. Start the engine, and run the vehicle in 1st gear. Measure the 1st clutch pressure from the A/T oil pressure gauge while holding the engine speed at 2, 000 rpm. Pressure Fluid Pressure Standard Service Limit 1st Clutch 559-618 kPa (5.7-6.3 kgf/cm 2 , 81-90 psi) Lower limit: 510 kPa (5.2 kgf/cm 2 , 74 psi) Upper limit: 667 kPa (6.8 kgf/cm 2 , 97 psi) If the 1st clutch pressure is out of the service limit, refer to the problem and probable cause(s) listed in the table. Problem Probable cause(s) No or low 1st clutch pressure 1st clutch Turn the engine off, remove the air cleaner housing, then disconnect the A/T oil pressure gauge from the 1st clutch pressure inspection port. Install the sealing bolt to the 1st clutch pressure inspection port using a new sealing washer, and tighten the bolt to 18 N.m (1.8 kgf.m, 13 lbf.ft). NOTE: Do not reuse the old sealing washer. 4th Clutch Pressure Test Connect the A/T oil pressure gauge to the 4th clutch pressure inspection port (A). Temporarily install the air cleaner housing. Start the engine, and run the vehicle in 4th gear. Measure the 4th clutch pressure from the A/T oil pressure gauge while holding the engine speed at 2, 000 rpm. Pressure Fluid Pressure Standard Service Limit 4th Clutch 559-618 kPa (5.7-6.3 kgf/cm 2 , 81-90 psi) Lower limit: 510 kPa (5.2 kgf/cm 2 , 74 psi) Upper limit: 667 kPa (6.8 kgf/cm 2 , 97 psi) If the 4th clutch pressure is out of the service limit, refer to the problem and probable cause(s) listed in the table. Problem Probable cause(s) No or low 4th clutch pressure 4th clutch Turn the engine off, remove the air cleaner housing, then disconnect the A/T oil pressure gauge from the 4th clutch pressure inspection port. Install the sealing bolt to the 4th clutch pressure inspection port using a new sealing washer, and tighten the bolt to 18 N.m (1.8 kgf.m, 13 lbf.ft). NOTE: Do not reuse the old sealing washer.

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1. Air Cleaner Install the harness clamp (A). Install the air cleaner (B). Connect the intake air duct (C).
2. Raise The Vehicle On The Lift Raise the vehicle on the lift.
3. Engine Undercover Install the engine undercover (A).

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1. Warm Up The Engine Start the engine. Hold the engine speed at 3, 000 rpm without load (A/T in P or N, M/T in neutral) until the radiator fan comes on, then let it idle.
2. HDS DLC - Connection Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard. Turn the ignition switch to ON (II). Make sure the HDS communicates with the vehicle. If it does not communicate, go to the DLC circuit troubleshooting.
3. Automatic Transmission Road - Test Park the vehicle on the level ground. Apply the parking brake, and block all four wheels. Start the engine. Shift to D while pressing the brake pedal. Press the accelerator pedal, and release it suddenly. The engine should not stall. Repeat step 4 in all shift lever positions. Prepare the HDS and the MVCI to take a SNAPSHOT (refer to the HDS user's guide for more details if needed): Find a suitable level road. When you are ready to do the test, press OK on the HDS. Accelerate quickly until APP Sensor A reads 1.3 V. Maintain a steady throttle until the transmission shifts to 5th gear, then slow the vehicle and come to a stop. Save the snapshot if the entire event was recorded or increase the recording time setting as necessary, and repeat step 9 . Adjust the parameter setting to 2.4 V. Test-drive the vehicle again. Accelerate quickly until APP Sensor A reads 2.5 V. Maintain a steady throttle until the transmission shifts to 5th gear (or a reasonable speed), then slow the vehicle and come to a stop. Save the snapshot if the entire event was recorded or increase the recording time setting as necessary, and repeat step 12 . Accelerate quickly until the accelerator pedal is to the floor. Maintain a steady pedal until the transmission shifts to 3rd gear, then slow to a stop, and save the snapshot. Review each snapshot individually, and compare the Shift Control, APP Sensor A (V), and the Vehicle Speed to the following table. UPSHIFT SPECIFICATION - D POSITION APP Sensor A voltage: 1.3 V 1st-->2nd 9-11 mph (15-17 km/h) 2nd-->3rd 15.8-17.7 mph (25.5-28.5 km/h) 3rd-->4th 22.1-25.2 mph (35.5-40.5 km/h) 4th-->5th 34-38 mph (55-61 km/h) Lock-up ON 31-34 mph (50-54 km/h) APP Sensor A voltage: 2.5 V 1st-->2nd 22.1-23.9 mph (35.5-38.5 km/h) 2nd-->3rd 42-46 mph (68-74 km/h) 3rd-->4th 60-63 mph (96-102 km/h) 4th-->5th 91-94 mph (146-152 km/h) Lock-up ON 96-99 mph (154-160 km/h) Fully-opened throttle APP Sensor A voltage: 4.4 V 1st-->2nd 35-39 mph (57-63 km/h) 2nd-->3rd 64-68 mph (103-109 km/h) 3rd-->4th 102-106 mph (164-170 km/h) DOWNSHIFT SPECIFICATION - D POSITION APP Sensor A voltage: 1.3 V Lock-up OFF 30-33 mph (49-53 km/h) 5th-->4th 30-34 mph (49-55 km/h) 4th-->3rd 19-22 mph (31-36 km/h) 3rd-->1st 5-7 mph (8-12 km/h) APP Sensor A voltage: 2.5 V Lock-up OFF 68-72 mph (110-116 km/h) Fully-opened throttle APP Sensor A voltage: 4.4 V Lock-up OFF 119-122 mph (191-197 km/h) 4th-->3rd 82-86 mph (132-138 km/h) 3rd-->2nd 54-58 mph (87-93 km/h) 2nd-->1st 26-30 mph (42-48 km/h) Drive the vehicle in 4th or 5th gear, then shift to 2nd gear. The vehicle should immediately begin to slow down from engine braking. Shift to 1, accelerate from a stop at full throttle, and check for abnormal noise and clutch slippage. Upshifts should not occur in this position. Shift to 2, accelerate from a stop at full throttle, and check for abnormal noise and clutch slippage. Upshifts and downshifts should not occur in this position. Shift to R, accelerate from a stop at to full throttle momentarily, and check for abnormal noise and clutch slippage. 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.

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1. Warm Up The Engine Start the engine. Hold the engine speed at 3, 000 rpm without load (A/T in P or N, M/T in neutral) until the radiator fan comes on, then let it idle.
2. ATF Level Check Park the vehicle on the level ground. Remove the ATF dipstick (yellow loop) (A), and wipe it with a clean cloth. Insert the dipstick into the dipstick hole. Remove the dipstick, and check the ATF level. It should be between the upper mark (A) and the lower mark (B). 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. Engine vibrates at idle. If the ATF level is above the upper mark, drain the ATF to proper level. 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. If necessary, fill the transmission with ATF through the dipstick hole (A) to bring the fluid level between the upper mark and the lower mark of the dipstick. Do not fill the fluid above the upper mark. Always use Honda automatic transmission fluid (ATF) ATF DW-1. Using a non-Honda ATF can affect shift quality. Insert the dipstick back into the dipstick hole.
3. HDS DLC - Connection Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard. Turn the ignition switch to ON (II). Make sure the HDS communicates with the vehicle. If it does not communicate, go to the DLC circuit troubleshooting.
4. Automatic Transmission Stall Speed - Test Make sure the A/C switch is OFF. Shift to D while pressing the brake pedal firmly, then press the accelerator pedal for 6 to 8 seconds, and note the engine speed. NOTE: Do not move the shift lever or remove your foot off the brake pedal, while raising the engine speed. Allow 2 minutes for cooling, then repeat the test in the all shift lever positions. 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 the all shift lever positions. Do not test stall speed with A/T pressure gauges installed. Stall Speed rpm Specification: 2, 200 rpm Service Limit: 2, 050-2, 350 rpm If any of the stall speeds are out of the service limit, refer to the problems and probable causes listed in the table. Problem Probable Causes Stall speed rpm high in D, 2, 1, and R ATF pump output low Clogged ATF strainer Regulator valve stuck Slipping clutch Stall speed rpm high in 2 Slippage of 2nd clutch Stall speed rpm high in 1 Slippage of 1st clutch Stall speed rpm high in R Slippage of 5th clutch Stall speed rpm low in D, 2, 1, and R Engine output low Engine throttle valve closed Torque converter one-way clutch slipping

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1. Vehicle Lift Raise the vehicle on a lift, and make sure it is securely supported.
2. Engine Undercover Remove the engine undercover (A).

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1. ATF Temperature Sensor - Test Disconnect the connector (A). Measure the resistance between shift solenoid wire harness 7P connector (B) terminals No. 5 and No. 6 for ATF temperature sensor. Standard: 50 ohms-25 kohms If the resistance is out of the standard, replace the ATF temperature sensor and the solenoid wire harness. NOTE: The ATF temperature sensor is not available separately from the shift solenoid wire harness. If the resistance is within the standard, the test is complete. Check the connector for corrosion, dirt, or oil, and clean or repair if necessary, then connect the connector securely.

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1. Engine Undercover Install the engine undercover (A).