Nissan Juke Service and Repair Manual : P0743 torque converter

DTC Logic

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE


DTC CONFIRMATION PROCEDURE

CAUTION:
Be careful of the driving speed.

1.PREPARATION BEFORE OPERATION (PART 1)

If another "DTC CONFIRMATION PROCEDURE" occurs just before, turn ignition switch OFF and wait for at least 10 seconds, then perform the next test.

>> GO TO 2.

2.PREPARATION BEFORE OPERATION (PART 2)

1. Start the engine.With CONSULT-III


1. Start the engine.

2. Select Data Monitor in TRANSMISSION.

3. Select FLUID TEMP.

4. Confirm that the CVT fluid temperature is in the following range.

FLUID TEMP : 10C (50F) or more

1. Start the engine.With GST


1. Start the engine.

2. Set the CVT fluid to 10C (58F) or more.

NOTE

:
When the ambient temperature is 20C (68F), the CVT fluid usually increases to 50 to 80C (122 to 176F) with driving in an urban area for approximately 10 minutes.

Is the CVT fluid 10C (58F) or more? YES >> GO TO 3.

NO >> 1. Warm the transaxle.

2. GO TO 3.

3.CHECK DTC DETECTION

1. Drive the vehicle.

2. Maintain the following conditions for 5 seconds or more.

Selector lever : D position Vehicle speed : 40 km/h (25 MPH) or more

3. Stop the vehicle.

4. Check the first trip DTC.

Is P0743 detected? YES >> Go to TM-419, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

1.CHECK CIRCUIT BETWEEN TCM AND CVT UNIT

1. Turn ignition switch OFF.

2. Disconnect the TCM connector and the CVT unit connector.

3. Check the continuity between TCM harness connector terminal and ground.

Is the check result normal?


Is the check result normal? YES >> GO TO 2.

NO >> Repair or replace the malfunctioning parts.

2.CHECK TORQUE CONVERTER CLUTCH SOLENOID VALVE

Check the torque converter clutch solenoid valve. Refer to TM-419, "Component Inspection (Torque Converter Clutch Solenoid Valve)".

Is the check result normal? YES >> Check intermittent incident. Refer to GI-42, "Intermittent Incident".

NO >> Repair or replace the malfunctioning parts.

Component Inspection (Torque Converter Clutch Solenoid Valve)

1.CHECK TORQUE CONVERTER CLUTCH SOLENOID VALVE

Check the resistance between the CVT unit connector terminal and ground.

Is the inspection result normal?


Is the inspection result normal? YES >> INSPECTION END

NO >> There is a malfunction of the torque converter clutch solenoid valve. Replace the transaxle assembly. Refer to TM-508, "Removal and Installation".

    P0740 torque converter
    DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE CAUTION: Be careful of the driving speed. 1.PREPARATION BEFORE OPERATION (PART 1) If another "DTC CONFIRMATION PROCEDURE" occ ...

    P0744 torque converter
    DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE CAUTION: Be careful of the driving speed. 1.PREPARATION BEFORE OPERATION 1 If another "DTC CONFIRMATION PROCEDURE" occurs jus ...

    Other materials:

    Line pressure test
    Work Procedure INSPECTION 1. Check the engine oil level. Replenish if necessary. LU-25, "Inspection". 2. Check for leak of the CVT fluid. Refer to TM-480, "Inspection". 3. Drive for about 10 minutes to warm up the vehicle so that the CVT fluid temperature is 50 to 80C (122 ...

    Sill cover
    Exploded View 1. Screw grommet 2. Screw grommet 3. Sill cover 4. Wind defle Removal and Installation REMOVAL 1. Remove sill cover front end fixing screw (A). 2. Remove sill cover rear end fixing screw (A). 3. Remove sill cover lower side fixing screws. 4. Fully open front door and ...

    ASCD main switch
    Component Function Check 1.CHECK ASCD MAIN SWITCH FUNCTION With CONSULT-III 1. Turn ignition switch ON. 2. Select MAIN SW in DATA MONITOR mode of ENGINE using CONSULT-III. 3. Check MAIN SW indication as per the following condition. Without CONSULT-III 1. Turn ignition switch ON. 2. ...