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 : 10°C (50°F) or more

1. Start the engine.With GST


1. Start the engine.

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

NOTE

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

Is the CVT fluid 10°C (58°F) 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:

    Diagnosis system (navi control unit)
    Diagnosis Description On-Board Diagnosis Item • On-board diagnosis is performed in service test mode. • On-board diagnosis checks if the system operates normally. Service test mode METHOD OF STARTING 1. Start the engine. 2. Turn OFF audio. 3. While pressing the “SET UP” switch, turn th ...

    P0603 ECM power supply
    DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1.PRECONDITIONING If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test. 1. Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition swit ...

    Fuel level sensor unit, fuel filter and fuel pump assembly
    2WD : Exploded View 1. Fuel tank 2. Lock ring 3. Fuel level sensor unit, fuel filter and fuel pump assembly 4. Rock ring Vehicle front : N?·m (kg-m, ft-lb) : Always replace after every disassembly. 2WD : Removal and Installation WARNING: Read ???General Precautions??? when workin ...