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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 922 (Continuously Variable Transmission (CVT)) >> Trouble Diagnosis For Symptoms >> CVT Indicator Lamp Does Not Come On >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2008 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK CAN COMMUNICATION LINE 

    Perform the self-diagnosis check. Refer to "SELF-DIAGNOSTIC RESULT MODE ".

    Is any malfunction of the "U1000 CAN COMM CIRCUIT" indicated in the results? 

    YES: Check CAN communication line. Refer to "DTC U1000 CAN COMMUNICATION LINE ".

    No: GO TO  2.

  2. CHECK TCM POWER SOURCE 
    1. Turn ignition switch ON.
    2. Check voltage between TCM connector terminals and ground.

      Refer to "WIRING DIAGRAM - CVT - POWER ".

    TCM POWER SOURCE

    Name Connector Terminal Voltage (Approx.)
    Power supply F56 10 Battery voltage
    19 Battery voltage
    Fig 1: Checking Voltage Between TCM Connector Terminal And Ground
    G04916211Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO  4.

    NG: GO TO  3.

  3. DETECT MALFUNCTIONING ITEM 

    Check the following.

    OK or NG 

    OK: GO TO  4.

    NG: Repair or replace damaged parts.

  4. CHECK TCM GROUND CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect TCM connector.
    3. Check continuity between TCM connector terminals and ground.

      Refer to "WIRING DIAGRAM - CVT - POWER ".

    TCM CONNECTOR TERMINALS AND GROUND

    Name Connector Terminal Continuity
    Ground F57 25 Yes
    48
    Fig 2: Checking Continuity Between TCM Connector Terminals And Ground
    G04916180Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO  5.

    NG: Repair open circuit or short to ground or short to power in harness or connectors.

  5. DETECT MALFUNCTIONING ITEM 

    Check the following.

    • Harness and fuse for short or open between ignition switch and CVT indicator lamp

    OK or NG 

    OK: GO TO  6.

    NG: Repair or replace damaged parts.

  6. CHECK SYMPTOM 

    Check again. Refer to "CHECK BEFORE ENGINE IS STARTED ".

    OK or NG 

    OK: INSPECTION END 

    NG: GO TO  7.

  7. CHECK COMBINATION METERS 

    Check combination meters. Refer to "COMBINATION METERS ".

    OK or NG 

    OK: INSPECTION END 

    NG: Repair or replace damaged parts.

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