Automatic Transmission (Cvt): Other Nissan Quest IV

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"

The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. Information necessary to service the system safely is included in the " SRS AIRBAG " and " SEAT BELTS " articles of this Service Information.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

Precaution for Procedure without Cowl Top Cover

When performing the procedure after removing cowl top cover, cover the lower end of windshield with urethane, etc to prevent damage to windshield.

Scheme 84

Scheme 85

1. When removing the 12V battery terminal, turn OFF the ignition switch and wait at least 30 seconds. NOTE: ECU may be active for several tens of seconds after the ignition switch is turned OFF. If the battery terminal is removed before ECU stops, then a DTC detection error or ECU data corruption may occur.
2. For vehicles with the 2-batteries, be sure to connect the main battery and the sub battery before turning ON the ignition switch. NOTE: If the ignition switch is turned ON with any one of the terminals of main battery and sub battery disconnected, then DTC may be detected.
3. After installing the 12V battery, always check "Self Diagnosis Result" of all ECUs and erase DTC. NOTE: The removal of 12V battery may cause a DTC detection error.

Special Service Tools

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Tool number (Kent-Moore No.) Tool name Description - (OTC3492) Oil pressure gauge set Measuring line pressure ST33400001 (J-26082) Drift 60 mm (2.36 in) dia. 47 mm (1.85 in) dia. Installing differential side oil seal KV40100621 (J-25405) Drift 76 mm (2.99 in) dia. 69 mm (2.72 in) dia. Installing side oil seal (transfer joint)

Scheme 86

Scheme 87

Commercial Service Tools

Tool number Tool name Description Power tool Loosening nuts and bolts 31197CA000 Drive plate location guide 14 mm (0.55 in) dia. Installing transaxle assembly

Scheme 88

Scheme 89

CVT CONTROL SYSTEM: TCM

Judges driving condition according to signals from each sensor, and optimally controls variable speed mechanism.

CVT CONTROL SYSTEM: Transmission Range Switch

1. The transmission range switch is included in the control valve assembly.
2. The transmission range switch includes 4 transmission position switches.
3. TCM judges the selector lever position by the transmission range switch signal. Shift position Transmission range switch 1 Transmission range switch 2 Transmission range switch 3 Transmission range switch 4 Transmission range switch 3 (monitor) P OFF OFF OFF OFF OFF R ON OFF OFF ON OFF N ON ON OFF OFF OFF D ON ON ON ON ON L OFF ON ON OFF ON

Scheme 90

1. The CVT fluid temperature sensor is included in the control valve assembly.
2. The CVT fluid temperature sensor detects the CVT fluid temperature and sends a signal to the TCM.
3. The fluid temperature sensor uses a thermistor, and changes the signal voltage by converting changes in the CVT fluid temperature to a resistance value. TCM evaluates the CVT fluid temperature from the signal voltage value.

Scheme 91

1. The primary speed sensor is included in the control valve assembly.
2. The primary speed sensor detects the primary pulley revolution speed and sends a signal to the TCM.
3. The primary speed sensor generates the ON-OFF pulse (short waveform) in proportion to the rotating body speed which is "The higher the rotating body speed is, the faster the change cycle is". The TCM judges the rotating speed from the changing cycle of this pulse signal.

Scheme 92

1. The secondary speed sensor is installed in the rear of transaxle assembly.
2. The secondary speed sensor detects the secondary pulley revolution speed and sends a signal to the TCM.
3. The secondary speed sensor generates the ON-OFF pulse (short waveform) in proportion to the rotating body speed which is "The higher the rotating body speed is, the faster the change cycle is". The TCM judges the rotating speed from the changing cycle of this pulse signal.

Scheme 93

1. The primary pressure sensor is included in the transaxle assembly.
2. The primary pressure sensor detects primary pressure of CVT and sends a signal to the TCM.
3. When pressure is applied to the ceramic device in the primary pressure sensor, the ceramic device is deformed, resulting in voltage change. TCM evaluates the primary pressure from its voltage change. Voltage is increased along with pressure increase.

CVT CONTROL SYSTEM: Secondary Pressure Sensor

1. The secondary pressure sensor is included in the control valve assembly.
2. The secondary pressure sensor detects secondary pressure of CVT and sends a signal to the TCM.
3. When pressure is applied to the ceramic device in the secondary pressure sensor, the ceramic device is deformed, resulting in voltage change. TCM evaluates the secondary pressure from its voltage change. Voltage is increased along with pressure increase.

CVT CONTROL SYSTEM: Secondary Pressure Solenoid Valve

1. The secondary pressure solenoid valve is included in the control valve assembly.
2. The secondary pressure solenoid valve controls secondary valve. For detailed secondary valve, refer to " «TRANSAXLE: COMPONENT DESCRIPTION»(ref-672632-S40923843752014112400000) ".
3. The secondary pressure solenoid valve contains a linear solenoid valve [N/H (Normal High) type]. NOTE: The principle of the linear solenoid valve utilizes the fact that the force pressing on the valve spool installed inside the coil increases nearly in proportion to the current. This allows it to produce a fluid pressure that is proportional to this pressing force. The N/H (Normal High) produces hydraulic control when the coil is not energized.

CVT CONTROL SYSTEM: Line Pressure Solenoid Valve

1. The line pressure solenoid valve is included in the control valve assembly.
2. Line pressure solenoid valve controls pressure regulator valve. For detailed pressure regulator valve, refer to " «TRANSAXLE: COMPONENT DESCRIPTION»(ref-672632-S40923843752014112400000) ".
3. The line pressure solenoid valve contains a linear solenoid valve [N/H (Normal High) type]. NOTE: The principle of the linear solenoid valve utilizes the fact that the force pressing on the valve spool installed inside the coil increases nearly in proportion to the current. This allows it to produce a fluid pressure that is proportional to this pressing force. The N/H (Normal High) produces hydraulic control when the coil is not energized.

CVT CONTROL SYSTEM: Lock-up Select Solenoid Valve

1. The lock-up select solenoid valve is included in the control valve assembly.
2. The lock-up select solenoid valve controls the select switch valve. For detailed secondary valve, refer to " «TRANSAXLE: COMPONENT DESCRIPTION»(ref-672632-S40923843752014112400000) ".
3. The lock-up select solenoid valve contains an ON/OFF solenoid valve. NOTE: The only operations of the valve spool installed inside the coil are pressing or not pressing the ball which seals the hydraulic supply section into the seat. This A/T uses N/L (Normal Low) type. When voltage is not applied to the coil, the force of the pilot pressure presses the ball against the seat, stopping the pilot pressure at that point. When voltage is applied to the coil, the valve is pulled in the direction of the coil, disengaging the hydraulic seal which the ball creates. This supplies pilot pressure to the operating locations.

CVT CONTROL SYSTEM: Step Motor

The step motor changes the step by turning 4 coils ON/OFF according to the signal from TCM. As a result, the flow of line pressure to primary pulley is changed and pulley ratio is controlled.

CVT CONTROL SYSTEM: Shift Position Indicator

1. The shift position indicator is located in the combination meter.
2. TCM transmits shift position signal to combination meter via CAN communication. The actual shift position is displayed on combination meter according to the signal.

CVT CONTROL SYSTEM: Overdrive Control Switch

1. The overdrive control switch is installed on the selector lever knob.
2. If the overdrive control switch is pressed when the O/D OFF indicator lamp on the combination meter is not lit, the status changes to overdrive OFF and the O/D OFF indicator lamp illuminates.
3. If the overdrive control switch is pressed when the O/D OFF indicator lamp on the combination meter is lit, the overdrive OFF status is canceled and the O/D OFF indicator lamp turns off.

CVT CONTROL SYSTEM: O/D OFF Indicator Lamp

1. The O/D OFF indicator lamp is located in the combination meter.
2. The O/D OFF indicator lamp illuminates when the overdrive function is deactivated (O/D OFF).
3. For checking the bulb, this lamp turns on for a certain period of time when the ignition switch turns ON, and then turns off. Condition (status) O/D OFF indicator lamp Ignition switch OFF. OFF Ignition switch ON. ON (Approx. 2 seconds) Overdrive control switch is pressed when the selector lever is in the "D" position and the O/D OFF indicator lamp is OFF (when system is normal). ON Overdrive control switch is pressed when the selector lever is in the "D" position and the O/D OFF indicator lamp is ON. OFF Selector lever is shifted from the "D" position to another position when the O/D OFF indicator lamp is ON. OFF

CVT CONTROL SYSTEM: Stop Lamp Relay

The stop lamp relay is turned ON by the stop lamp switch operation.

Scheme 94

TRANSAXLE: Planetary Gear

1. A planetary gear type of forward/reverse selector mechanism is installed between the torque converter and primary pulley.
2. The power from the torque converter is input via the input shaft, operating a wet multi-plate clutch by means of hydraulic pressure to switch between forward and reverse driving.

Scheme 95

TRANSAXLE: Belt & Pulley

It is composed of a pair of pulleys (the groove width is changed freely in the axial direction) and the steel belt (the steel plates are placed continuously and the belt is guided with the multilayer steel rings on both sides).

The groove width changes according to wrapping radius of steel belt and pulley from low status to overdrive status continuously with non-step. It is controlled with the oil pressures of primary pulley and secondary pulley.

Scheme 96

STEEL BELT

It is composed of multiple steel plates (A) and two steel rings (B) stacked to a several number. The feature of this steel belt transmits power with compression of the steel plate in contrast with transmission of power in pulling with a rubber belt. Friction force is required with the pulley slope to transmit power from the steel plate. The force is generated with the following mechanism

Oil pressure applies to the secondary pulley to nip the plate. ==> The plate is pushed and extended outward. ==> The steel ring shows withstands. ==> Pulling force is generated on the steel ring. ==> The plate of the primary pulley is nipped between the pulley. ==> Friction force is generated between the steel belt and the pulley.

Scheme 97

Therefore, responsibilities are divided by the steel plate that transmits the power with compression and the steel ring that maintains necessary friction force. In this way, the tension of the steel ring is distributed on the entire surface and stress variation is limited, resulting in good durability.

PULLEY

The primary pulley (input shaft side) and the secondary pulley (output shaft side) have the shaft with slope (fixed cone surface), movable sheave (movable cone surface that can move in the axial direction) and oil pressure chamber at the back of the movable sheave.

The movable sheave slides on the shaft to change the groove width of the pulley. Input signals of engine load (accelerator pedal opening), primary pulley speed and secondary pulley speed change the operation pressures of the primary pulley and the secondary pulley, and controls the pulley groove width.

Scheme 98

Scheme 99

1. The deceleration gears are composed of 2 stages: primary deceleration (output gear, idler gear pair) and secondary deceleration (reduction gear, final gear pair). All of these gears are helical gears.
2. The lubrication oil is the same as the fluid which lubricates the entire transaxle.

Lock-up Released

In the lock-up released state, the torque converter clutch control valve is set into the unlocked state by the torque converter clutch solenoid valve and the lock-up apply pressure is drained.

In this way, the torque converter clutch piston is not coupled.

Lock-up Applied

In the lock-up applied state, the torque converter clutch control valve is set into the locked state by the torque converter clutch solenoid valve and lock-up apply pressure is generated.

In this way, the torque converter clutch piston is pressed and coupled.

Select Control

When shifting between "N" ("P") ==> "D" ("R"), optimize the operating pressure on the basis of the throttle position, the engine speed, and the secondary pulley (output) revolution speed to lessen the shift shock.

Scheme 100

Note. The gear ratio is set for each position separately.

"D" POSITION

Shifting over all the ranges of gear ratios from the lowest to the highest.

Scheme 101

OVERDRIVE OFF CONDITION

Use this position for improved engine braking.

Scheme 102

"L" POSITION

By limiting the gear range to the lowest position, the strong driving force and the engine brake can be secured.

Scheme 103

DOWNHILL ENGINE BRAKE CONTROL (AUTO ENGINE BRAKE CONTROL)

When a downhill slope is detected with the accelerator pedal released, the engine brake will be strengthened up by downshifting so as not to accelerate the vehicle more than necessary.

ACCELERATION CONTROL

According to vehicle speed and a change of accelerator pedal angle, driver's request for acceleration and driving scene are judged. This function assists improvement in the acceleration feeling by making the engine speed proportionate to the vehicle speed. And a shift map that can gain a larger driving force is available for compatibility of mileage with driveability.

"P" POSITION HOLD MECHANISM (IGNITION SWITCH LOCK)

The shift lock solenoid (1) is not energized when the ignition switch is in any position other than ON. In this condition, the shift mechanism is locked and "P" position is held. The operation cannot be performed from "P" position if the brake pedal is depressed with the ignition switch ON when the operation system of shift lock solenoid is malfunctioning. However, the lock lever (B) is forcibly rotated and the shift lock is released when the shift lock release button (A) is pressed from above. Then the selector operation from "P" position can be performed.

Scheme 104

DATA MONITOR

Note. The following table includes information (items) inapplicable to this vehicle. For information (items) applicable to this vehicle, refer to CONSULT display items.

WORK SUPPORT

Engine Brake Adjustment

ENGINE BRAKE LEVEL

0: Initial set value (Engine brake level control is activated)

OFF: Engine brake level control is deactivated.

Check CVT Fluid Deterioration Date

CVTF DETERIORATION DATE

210, 000 or more: It is necessary to change CVT fluid.

Less than 210, 000: It is not necessary to change CVT fluid.

ATFTEMP COUNT Conversion Table

CONSULT DATA MONITOR STANDARD VALUE

Note. The following table includes information (items) inapplicable to this vehicle. For information (items) applicable to this vehicle, refer to CONSULT display items.

Scheme 105

PHYSICAL VALUES

Terminal No. (Wire color) Description Condition Value (Approx.) + - Signal name Input/Output 1 (P/B) Ground Transmission range switch 2 Input Ignition switch ON Selector lever in "N", "D", and "L" positions 0 V Selector lever in other positions 10 - 16 V 2 (P/L) Ground Transmission range switch 3 Input Selector lever in "D" and "L" positions 0 V Selector lever in other positions 10 - 16 V 3 (G/O) Ground Transmission range switch 4 Input Selector lever in "R" and "D" positions 0 V Selector lever in other positions 10 - 16 V 4 (GR) Ground Transmission range switch 3 (monitor) Input Selector lever in "D" and "L" positions 0 V Selector lever in other positions 10 - 16 V 5 (B) Ground Ground Output Always 0 V 7 (W) Ground Sensor ground Output Always 0 V 8 (G/W) - ROM ASSY (SEL2) - - - 9 (L/R) - ROM ASSY (SEL1) - - - 10 (BR/R) - ROM ASSY (SEL3) - - - 11 (BR/W) Ground Transmission range switch 1 Input Ignition switch ON Selector lever in "R", "N", and "D" positions 0 V Selector lever in other positions 10 - 16 V 13 (V) Ground CVT fluid temperature sensor Input Ignition switch ON When CVT fluid temperature is 20°C (68°F) 2.01 - 2.05 V When CVT fluid temperature is 50°C (122°F) 1.45 - 1.50 V When CVT fluid temperature is 80°C (176°F) 0.90 - 0.94 V 14 (R/W) Ground Primary pressure sensor Input "N" position idle 0.7 - 1.2 V 15 (V/W) Ground Secondary pressure sensor Input 0.8 V 19 (G/B) Ground Back-up lamp relay Output Ignition switch ON Selector lever in "R" position 0 V Selector lever in other positions 10 - 16 V 20 (R/B) Ground Starter relay Output Ignition switch ON Selector lever in "N" and "P" positions 10 - 16 V Selector lever in other positions 0 V 25 (W/R) Ground Sensor ground Output Always 0 V 26 (L/O) Ground Sensor power Output Ignition switch ON 5.0 V Ignition switch OFF 0 V 27 (R/G) Ground Step motor D Output Within 2 seconds after ignition switch ON, the time measurement by using the pulse width measurement function (Hi level) of CONSULT. (1) CAUTION: Connect the diagnosis data link cable to the vehicle diagnosis connector. 10.0 msec 28 (R) Ground Step motor C Output 30.0 msec 29 (O/B) Ground Step motor B Output 10.0 msec 30 (G/R) Ground Step motor A Output 30.0 msec 31 (P) - CAN-L Input/Output - - 32 (L) - CAN-H Input/Output - - 33 (LG) Ground Primary speed sensor Input When driving ["L" position, 20 km/h (12 MPH)] 710 Hz 34 (LG/R) Ground Secondary speed sensor Input When driving ["D" position, 20 km/h (12 MPH)] 380 Hz 37 (V/R) Ground Lock-up select solenoid valve Output Ignition switch ON Selector lever in "P" and "N" positions 10 - 16 V Wait at least for 5 seconds with the selector lever in "R", "D", and "L" positions 0 V 38 (L/W) Ground Torque converter clutch solenoid valve Output When vehicle drive in "D" position When CVT performs lockup 6.0 V When CVT does not perform lock-up 1.0 V 39 (W/B) Ground Secondary pressure solenoid valve Output "N" positions idle Release the accelerator pedal when warmed up the engine 5.0 - 7.0 V Depress the full acceleration when warmed up the engine 3.0 - 4.0 V 40 (R/Y) Ground Line pressure solenoid valve Output Release the accelerator pedal when warmed up the engine 5.0 - 7.0 V Depress the full acceleration when warmed up the engine 1.0 - 3.0 V 42 (B) Ground Ground Output Always 0 V 46 (Y) Ground Ignition Power supply Output Ignition switch ON 10 - 16 V Ignition switch OFF 0 V 47 (L/R) Ground Battery Power supply (memory back-up) Input Always 10 - 16 V 48 (Y) Ground Ignition Power supply Output Ignition switch ON 10 - 16 V Ignition switch OFF 0 V (1) A circuit tester cannot be used to test this item

Scheme 106

Work Flow

1. COLLECT THE INFORMATION FROM THE CUSTOMER Get the detailed information from the customer about the symptom (the condition and the environment when the incident/malfunction occurred) using the question sheet. Refer to " «DIAGNOSTIC WORK SHEET»(ref-672632-S09569214762014112400000) ". : GO TO 2.
2. CHECK SYMPTOM 1 Check the following items based on the information obtained from the customer. Fail-safe. Refer to " «FAIL-SAFE»(ref-672632-S39559846692014112400000) ". CVT fluid inspection. Refer to " «INSPECTION»(ref-672632-S40361383212014112400000) ". Line pressure test. Refer to " «WORK PROCEDURE»(ref-672632-S17226349242014112400000) ". Stall test. Refer to " «WORK PROCEDURE»(ref-672632-S20293771202014112400000) ". : GO TO 3.
3. CHECK DTC Check DTC. Perform the following procedure if DTC is detected. Record DTC. Erase DTC. Is any DTC detected? YES: GO TO 4. NO: GO TO 5 .
4. PERFORM DIAGNOSTIC PROCEDURE Perform " «DIAGNOSTIC PROCEDURE»(ref-672621-S13735282332014112400000) " for the displayed DTC. Repair detected items. : GO TO 5.
5. PERFORM DTC CONFIRMATION PROCEDURE Perform " «DTC CONFIRMATION PROCEDURE»(ref-672632-S39908843322014112400000) " for the displayed DTC. Is DTC detected? YES: GO TO 4 . NO: GO TO 6.
6. CHECK SYMPTOM 2 Confirm the symptom described by the customer. Is any malfunction present? YES: GO TO 7. NO: INSPECTION END
7. ROAD TEST Perform " «ROAD TEST»(ref-672632-S31059364562014112400000) ". Refer to " «DESCRIPTION»(ref-672632-S40004526872014112400000) ". : GO TO 8.
8. CHECK SYMPTOM 3 Confirm the symptom described by the customer. Is any malfunction present? YES: GO TO 2 . NO: INSPECTION END

Procedure

1. LOAD CALIBRATION DATA Shift the selector lever to the "P" position. Turn ignition switch ON. Check that "P" is displayed on shift position indicator on combination meter. NOTE: Displayed approximately 1 - 2 seconds after the selector lever is moved to the "P" position. Does the shift position indicator display "P"? YES: GO TO 3 . NO: GO TO 2.
2. DETECT MALFUNCTIONING ITEM Check the following items: Harness between the TCM and the ROM assembly inside the transaxle assembly is open or shorted. Disconnected, loose, bent, collapsed, or otherwise abnormal connector housing terminals Is the inspection result normal? YES: GO TO 1 . NO: Repair or replace the malfunctioning parts.
3. STORE CALIBRATION DATA Turn ignition switch OFF and wait for 5 seconds. Turn ignition switch ON. Does the shift position indicator display "P" at the same time when turning ON the ignition switch? YES: WORK END NO: Check harness between battery and TCM harness connector terminal. Refer to " «DIAGNOSIS PROCEDURE»(ref-672632-S15212660532014112400000) ".

1. PREPARATION BEFORE WORK With CONSULT Start the engine. CAUTION: Never drive the vehicle. Select "Data Monitor" in "TRANSMISSION". Select "ATFTEMP COUNT". Is "ATFTEMP COUNT" 47 [equivalent to 20°C (68°F)] or more? YES: GO TO 2. NO: Warm up the transaxle assembly until "ATFTEMP COUNT" reaches "47" [equivalent to 20°C (68°F)] or more. GO TO 2.
2. PERFORM TCM INITIALIZATION With CONSULT Turn ignition switch OFF. Turn ignition switch ON. CAUTION: Never start the engine. Select "Self Diagnostic Results" in "TRANSMISSION". Shift selector lever to "R" position. Depress slightly the accelerator pedal (Pedal angle: 2.0/8) while depressing the brake pedal. Select "Erase" with step 5 . Release brake pedal and accelerator pedal. Select "CALIB DATA" in "TRANSMISSION". Check that "CALIB DATA" value is as shown as in the following table. Item name Display value UNIT CLB ID 1 00 UNIT CLB ID 2 00 UNIT CLB ID 3 00 UNIT CLB ID 4 00 UNIT CLB ID 5 00 UNIT CLB ID 6 00 Is "CALIB DATA" value it? YES: GO TO 3. NO: GO TO 1 .
3. LOAD CALIBRATION DATA Shift selector lever to "P" position. Check that "P" is displayed on shift position indicator on combination meter. NOTE: It indicates approximately 1 - 2 seconds after shifting the selector lever to "P" position. Does shift position indicator display "P"? YES: GO TO 5 . NO: GO TO 4.
4. DETECT MALFUNCTIONING ITEM Check the following items: Harness between the TCM and the ROM assembly inside the transaxle assembly is open or shorted. Disconnected, loose, bent, collapsed, or otherwise abnormal connector housing terminals Power supply and ground of TCM. (Refer to " «DIAGNOSIS PROCEDURE»(ref-672632-S15212660532014112400000) ".) Is the inspection result normal? YES: GO TO 1 . NO: Repair or replace the malfunctioning parts.
5. STORE CALIBRATION DATA Turn ignition switch OFF and wait for 5 seconds. Turn ignition switch ON. Does the shift position indicator display "P" at the same time when turning ON the ignition switch? YES: GO TO 6. NO: Check harness between battery and TCM harness connector terminal. Refer to " «DIAGNOSIS PROCEDURE»(ref-672632-S15212660532014112400000) ".
6. ERASE CVT FLUID DEGRADATION LEVEL DATA With CONSULT Select "WORK SUPPORT" in "TRANSMISSION". Select "CONFORM CVTF DETERIORTN". Touch "Clear". : WORK END

Work Procedure

1. Check the amount of engine oil. Replenish if necessary. Refer to " «INSPECTION»(ref-672629-S22621959722014112400000) ".
2. Check for leak of the CVT fluid. Refer to " «INSPECTION»(ref-672632-S40361383212014112400000) ".
3. Drive for about 10 minutes to warm up the vehicle so that the CVT fluid temperature is 50 to 80°C (122 to 176°F).
4. Be sure to apply the parking brake and block the tires.
5. Start the engine, depress the brake pedal and shift the selector lever to the "D" position.
6. While depressing the brake pedal, depress the accelerator pedal gradually.
7. Read the stall speed quickly. Then, release your foot from the accelerator pedal quickly. CAUTION: Never depress the accelerator pedal for 5 seconds or more during the test. Stall speed: " «STALL SPEED»(ref-672632-S36331313292014112400000) "
8. Shift the selector lever to the "N" position.
9. Cool the CVT fluid. CAUTION: Run the engine with the idle speed for at least 1 minute.
10. Shift the selector lever to the "R" position and perform Step 6 to Step 9 again. INSPECTION COMPONENTS DESCRIPTION Stall speed "D" position "R" position Possible cause H O Forward clutch O H Reverse brake L L Engine and torque converter one-way clutch Accelerator pedal position sensor H H Line pressure low Primary pulley Secondary pulley Steel belt O: Stall speed within standard value position. H: Stall speed is higher than standard value. L: Stall speed is lower than standard value.

Scheme 107

1. Check the amount of engine oil. Replenish if necessary. Refer to " «INSPECTION»(ref-672629-S22621959722014112400000) ".
2. Check for leak of the CVT fluid. Refer to " «INSPECTION»(ref-672632-S40361383212014112400000) ".
3. Drive for about 10 minutes to warm up the vehicle so that the CVT fluid temperature is 50 to 80°C (122 to 176°F).
4. After warming up transaxle assembly, remove oil pressure detection plug (A) and install oil pressure gauge [special service tool: - (OTC3492)]. NOTE: When using oil pressure gauge, be sure to use O-ring attached to oil pressure detection plug.
5. Be sure to apply the parking brake and block the tires.
6. Start the engine.
7. Measure the line pressure at both idle and the stall speed. CAUTION: Keep brake pedal pressed all the way down during measurement. Line pressure: " «LINE PRESSURE»(ref-672632-S35669731172014112400000) "
8. Install O-ring to fluid pressure detection plug after the measurements are complete. CAUTION: Never reuse O-ring. Apply CVT fluid to O-ring.
9. Install oil pressure detection plug and tighten to the specified torque. Torque: 7.5 N.m (0.77 kg-m, 66 in-lb) INSPECTION COMPONENTS DESCRIPTION Condition Possible cause Idle speed Low for all positions ("P", "R", "N", "D", "L") Possible causes include malfunctions in the pressure supply system and low oil pump output. For example Oil pump wear Pressure regulator valve or plug sticking or spring fatigue Oil strainer ==> oil pump ==> pressure regulator valve passage oil leak Engine idle speed too low Only low for a specific position Possible causes include an oil pressure leak in a passage or device related to the position after the pressure is distributed by the manual valve. High Possible causes include a sensor malfunction or malfunction in the line pressure adjustment function. For example Accelerator pedal position signal malfunction CVT fluid temperature sensor malfunction Line pressure solenoid malfunction (sticking in OFF state, filter clog, cut line) Pressure regulator valve or plug sticking Stall speed Line pressure does not rise higher than the line pressure for idle. Possible causes include a sensor malfunction or malfunction in the pressure adjustment function. For example TCM malfunction Line pressure solenoid malfunction (shorting, sticking in ON state) Pressure regulator valve or plug sticking The pressure rises, but does not enter the standard position. Possible causes include malfunctions in the pressure supply system and malfunction in the pressure adjustment function. For example Oil pump wear Line pressure solenoid valve or plug sticking Pressure regulator valve or plug sticking Only low for a specific position Possible causes include an oil pressure leak in a passage or device related to the position after the pressure is distributed by the manual valve.

Check before Engine Is Started

1. CHECK OD OFF INDICATOR LAMP Park vehicle on flat surface. Shift the selector lever to "P" position. Turn ignition switch OFF and wait at least 5 seconds. Turn ignition switch ON. Has OD OFF indicator lamp been turned ON for about 2 seconds? YES: Turn ignition switch OFF. Perform self-diagnosis and note NG items. Refer to " «DTC INDEX»(ref-672632-S34779500342014112400000) ". Go to " «CHECK AT IDLE»(ref-672632-S18586402142014112400000) ". NO: Stop "Road Test". Refer to " «SYMPTOM TABLE»(ref-672632-S25614624882014112400000) ".

Check at Idle

1. CHECK STARTING THE ENGINE (PART 1) Park vehicle on flat surface. Shift the selector lever to "P" and "N" positions. Turn ignition switch OFF. Turn ignition switch to "START" position. Is engine started? YES: GO TO 2. NO: Stop "Road Test". Refer to " «SYMPTOM TABLE»(ref-672632-S25614624882014112400000) ".
2. CHECK STARTING THE ENGINE (PART 2) Turn ignition switch OFF. Turn ignition switch ON. Shift the selector lever to "R", "D" and "L" positions. Turn ignition switch to "START" position. Is engine started? YES: Stop "Road Test". Refer to " «SYMPTOM TABLE»(ref-672632-S25614624882014112400000) ". NO: GO TO 3.
3. CHECK "P" POSITION FUNCTION Shift the selector lever to "P" position. Turn ignition switch OFF. Release parking brake. Push vehicle forward or backward. Apply parking brake. Does vehicle move forward or backward? YES: Refer to " «SYMPTOM TABLE»(ref-672632-S25614624882014112400000) ". GO TO 4. NO: GO TO 4.
4. CHECK "N" POSITION FUNCTION Start the engine. Shift the selector lever to "N" position. Release parking brake. Does vehicle move forward or backward? YES: Refer to " «SYMPTOM TABLE»(ref-672632-S25614624882014112400000) ". GO TO 5. NO: GO TO 5.
5. CHECK SHIFT SHOCK Apply foot brake. Shift the selector lever to "R" position. Is there large shock when changing from "N" to "R" position? YES: Refer to " «SYMPTOM TABLE»(ref-672632-S25614624882014112400000) ". GO TO 6. NO: GO TO 6.
6. CHECK "R" POSITION FUNCTION Release foot brake for several seconds. Does vehicle creep backward? YES: GO TO 7. NO: Refer to " «SYMPTOM TABLE»(ref-672632-S25614624882014112400000) ". GO TO 7.
7. CHECK "D" POSITION FUNCTION Shift the selector lever to "D" and "L" positions and check if vehicle creeps forward. Does vehicle creep forward? YES: Go to " «CRUISE TEST»(ref-672632-S16999367572014112400000) ". NO: Stop "Road Test". Refer to " «SYMPTOM TABLE»(ref-672632-S25614624882014112400000) ".

Component Function Check

1. CHECK SHIFT POSITION INDICATOR Start the engine. Check that correct selector lever position ("P", "R", "N", "D", "L") is displayed as selector lever is moved into each position. Is the inspection result normal? YES: INSPECTION END NO: Go to " «DIAGNOSIS PROCEDURE»(ref-672632-S29283656692014112400000) ".

1. CHECK O/D OFF INDICATOR LAMP When ignition switch is turned ON, check that O/D OFF indicator lamp in combination meter illuminates during 2 seconds approximately. Is the inspection result normal? YES: GO TO 2. NO: Go to " «DIAGNOSIS PROCEDURE»(ref-672632-S36765899772014112400000) ".
2. CHECK OVERDRIVE CONTROL SWITCH Shift the selector lever to "D" position. When overdrive control switch is operated, check that O/D OFF indicator lamp in combination meter illuminates/extinguishes. Is the inspection result normal? YES: INSPECTION END. NO: Go to " «DIAGNOSIS PROCEDURE»(ref-672632-S16950622822014112400000) ".

Scheme 108

1. CHECK OVERDRIVE CONTROL SWITCH CIRCUIT Turn ignition switch OFF. Disconnect the CVT shift selector connector. Turn ignition switch ON. Check the voltage between CVT shift selector harness connector terminals. CVT shift selector Voltage (Approx.) Connector + - Terminal M57 1 4 12 V Is the inspection result normal? YES: GO TO 2. NO: GO TO 4 .
2. CHECK OVERDRIVE CONTROL SWITCH Check the overdrive control switch. Refer to " «COMPONENT INSPECTION (OVERDRIVE CONTROL SWITCH)»(ref-672632-S42160656642014112400000) ". Is the inspection result normal? YES: GO TO 3. NO: Repair or replace damaged parts.
3. CHECK CVT SHIFT SELECTOR HARNESS Check the continuity between harness plate (A) and CVT shift selector (B). Harness plate CVT shift selector Continuity Terminal C 1 Existed D 4 Is the inspection result normal? YES: Check intermittent incident. Refer to " «INTERMITTENT INCIDENT»(ref-672611-S01525861502014112400000) ". NO: Replace the CVT shift selector assembly. Refer to " «EXPLODED VIEW»(ref-672632-S14248505422014112400000) ".
4. CHECK GROUND CIRCUIT Check the continuity between CVT shift selector harness connector terminal and ground. CVT shift selector - Continuity Connector Terminal M57 4 Ground Existed Is the inspection result normal? YES: GO TO 5. NO: Repair or replace damaged parts.
5. CHECK HARNESS BETWEEN CVT SHIFT SELECTOR AND COMBINATION METER Turn ignition switch OFF. Disconnect the combination meter connector. Check the continuity between CVT shift selector harness connector terminal and combination meter harness connector terminal. CVT shift selector Combination meter Continuity Connector Terminal Connector Terminal M57 1 M34 32 Existed Check continuity between CVT shift selector harness connector terminal and ground. CVT shift selector - Continuity Connector Terminal M57 1 Ground Not existed Is the inspection result normal? YES: GO TO 6. NO: Repair or replace damaged parts.
6. CHECK COMBINATION METER INPUT SIGNAL Connect all of the disconnected connectors. Turn ignition switch ON. Select "Data Monitor" in "METER/M & A". Select "O/D OFF SW". Check that "O/D OFF SW" turns ON/OFF when overdrive control switch is operated. Refer to " «REFERENCE VALUE»(ref-672645-S01451845162014112400000) ". Is the inspection result normal? YES: Check intermittent incident. Refer to " «INTERMITTENT INCIDENT»(ref-672611-S01525861502014112400000) ". NO: Replace the combination meter. Refer to " «EXPLODED VIEW»(ref-672645-S33468504032014112400000) ".

Scheme 109

1. CHECK OVERDRIVE CONTROL SWITCH Check the continuity between wires of select lever knob (1). Condition Continuity Overdrive control switch is depressed Existed Overdrive control switch is released Not existed Is the inspection result normal? YES: INSPECTION END NO: Replace the selector lever knob. Refer to " «EXPLODED VIEW»(ref-672632-S14248505422014112400000) ".

1. CHECK O/D OF INDICATOR LAMP When ignition switch is turned ON, check that O/D OFF indicator lamp in combination meter illuminates during 2 seconds approximately. Is the inspection result normal? YES: INSPECTION END NO: Go to " «DIAGNOSIS PROCEDURE»(ref-672632-S36765899772014112400000) ".

1. CHECK CVT SHIFT LOCK OPERATION Turn ignition switch ON. Move selector lever to "P" position. Attempt to shift selector lever to any other position with brake pedal released. Can selector lever be shifted to any other position? YES: Go to " «DIAGNOSIS PROCEDURE»(ref-672632-S29146524962014112400000) ". NO: GO TO 2.
2. CHECK CVT SHIFT LOCK OPERATION Attempt to shift selector lever to any other position with brake pedal depressed. Can the selector lever be shifted to any other position? YES: INSPECTION END NO: Go to " «DIAGNOSIS PROCEDURE»(ref-672632-S29146524962014112400000) ".

Changing

1. Remove drain plug from oil pan.
2. Remove O-ring from drain plug.
3. Install O-ring to drain plug. CAUTION: Never reuse O-ring.
4. Install drain plug to oil pan. Refer to " «EXPLODED VIEW»(ref-672632-S24672535862014112400000) ".
5. Fill CVT fluid from CVT fluid charging pipe to the specified level. Recommended fluid and fluid capacity: Refer to " «RECOMMENDED FLUIDS AND LUBRICANTS»(ref-672624-S37238398562014112400000) ". CAUTION: Use only recommended CVT fluid. Never mix with other fluid. Using CVT fluid other than Genuine recommended CVT fluid will deteriorate in driveability and CVT durability, and may damage the CVT, which is not covered by the warranty. When filling CVT fluid, take care not to scatter heat generating parts such as exhaust. Sufficiently shake the container of CVT fluid before using. Delete CVT fluid deterioration date with CONSULT after changing CVT fluid. Refer to " «CONSULT FUNCTION»(ref-672632-S28603277062014112400000) ".
6. With the engine warmed up, drive the vehicle in an urban area. NOTE: When ambient temperature is 20°C (68°F), it takes about 10 minutes for the CVT fluid to warm up to 50 to 80°C (122 to 176°F).
7. Check CVT fluid level and condition.
8. Repeat steps 1 to 5 if CVT fluid has been contaminated.

Cleaning

Whenever an automatic transaxle is repaired, overhauled, or replaced, the CVT fluid cooler mounted in the radiator must be inspected and cleaned.

Metal debris and friction material, if present, can be trapped or be deposited in the CVT fluid cooler. This debris can contaminate the newly serviced CVT or, in severe cases, can block or restrict the flow of CVT fluid. In either case, malfunction of the newly serviced CVT may occur.

Debris, if present, may deposit as CVT fluid enters the cooler inlet. It will be necessary to back flush the cooler through the cooler outlet in order to flush out any built up debris.

Scheme 110

Scheme 111

Scheme 112

1. Position an oil pan under the transaxle's inlet and outlet cooler hoses.
2. Identify the inlet and outlet fluid cooler hoses.
3. Disconnect the fluid cooler inlet and outlet rubber hoses from the steel cooler tubes or bypass valve. NOTE: Replace the cooler hoses if rubber material from the hose remains on the tube fitting.
4. Allow any CVT fluid that remains in the cooler hoses to drain into the oil pan.
5. Insert the extension adapter hose of a can of Transmission Cooler Cleaner (Nissan P/N 999MP-AM006) into the cooler outlet hose. CAUTION: Wear safety glasses and rubber gloves when spraying the Transmission Cooler Cleaner. Spray Transmission Cooler Cleaner only with adequate ventilation. Avoid contact with eyes and skin. Do not breath vapors or spray mist.
6. Hold the hose and can as high as possible and spray Transmission Cooler Cleaner in a continuous stream into the cooler outlet hose until CVT fluid flows out of the cooler inlet hose for 5 seconds.
7. Insert the tip of an air gun into the end of the cooler outlet hose.
8. Wrap a shop rag around the air gun tip and end of the cooler outlet hose.
9. Blow compressed air regulated to 5 to 9 kg/cm 2 (70 to 130 psi) through the cooler outlet hose for 10 seconds to force out any remaining CVT fluid.
10. Repeat steps 5 through 9 three additional times.
11. Position an oil pan under the banjo bolts that connect the CVT fluid cooler steel lines to the transaxle.
12. Remove the banjo bolts.
13. Flush each steel line from the cooler side back toward the transaxle by spraying Transmission Cooler Cleaner in a continuous stream for 5 seconds.
14. Blow compressed air regulated to 5 to 9 kg/cm 2 (70 to 130 psi) through each steel line from the cooler side back toward the transaxle for 10 seconds to force out any remaining CVT fluid.
15. Ensure all debris is removed from the steel cooler lines.
16. Ensure all debris is removed from the banjo bolts and fittings.
17. Perform " «CVT FLUID COOLER DIAGNOSIS PROCEDURE»(ref-672632-S12392090702014112400000) ".

RH Differential Side Oil Seal

1. Disconnect the battery cable from the negative terminal. Refer to " «REMOVAL AND INSTALLATION»(ref-672612-S30598946682014112400000) ".
2. Remove exhaust front tube. Refer to " «REMOVAL AND INSTALLATION»(ref-672628-S13582863602014112400000) ".
3. Remove right front drive shaft. Refer to " «RIGHT SIDE: REMOVAL AND INSTALLATION»(ref-672630-S29472552812014112400000) ".
4. Use oil seal remover or a similar means and remove the RH differential side oil seal. CAUTION: When removing the differential side oil seal, be careful not to scratch the oil seal mounting surfaces of the transaxle case and converter housing.

LH Differential Side Oil Seal

1. Remove left front drive shaft. Refer to " «LEFT SIDE: REMOVAL AND INSTALLATION»(ref-672630-S18837170522014112400000) ".
2. Use oil seal remover or a similar means and remove the LH differential side oil seal. CAUTION: When removing the differential side oil seal, be careful not to scratch the oil seal mounting surfaces of the transaxle case and converter housing.

Vehicle Speed When Shifting Gears

Numerical value data are reference values.

Stall Speed

Line Pressure

Heater Thermostat

STANDARD VALVE OPENING TEMPERATURE SPECIFICATION