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Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK TCM POWER SOURCE STEP 1xy2 
    1. Turn ignition switch OFF.
    2. Disconnect A/T assembly harness connector.
    3. Check voltage between A/T assembly harness connector terminals and ground.
      Item Connector Terminal Voltage
      TCM F9 1 - Ground Battery voltage
      2 - Ground
      6 - Ground 0V
      Fig 1: Checking Voltage Between A/T Assembly Harness Connector Terminals And Ground
      G04875876Courtesy of NISSAN NORTH AMERICA, INC.

      OK or NG 

      OK: GO TO 2.

      NG: GO TO  3.

  2. CHECK TCM POWER SOURCE STEP 2 
    1. Disconnect A/T assembly harness connector.
    2. Turn ignition switch ON. (Do not start engine.)
    3. Check voltage between A/T assembly harness connector terminals and ground.
      Item Connector Terminal Voltage
      TCM F9 1 - Ground Battery voltage
      2 - Ground
      6 - Ground
      Fig 2: Checking Voltage Between A/T Assembly Harness Connector Terminals And Ground
      G04875877Courtesy of NISSAN NORTH AMERICA, INC.

      OK or NG 

      OK: GO TO  4.

      NG: GO TO 3.

  3. DETECT MALFUNCTIONING ITEM 

    Check the following items:

    • Harness for short or open between battery and A/T assembly harness connector terminals 1, 2
    • Harness for short or open between ignition switch and A/T assembly harness connector terminal 6
    • 10A fuse [No. 3, 4, located in the fuse block (J/B)] and 10A fuse (No. 49, located in the IPDM E/R)
    • Ignition switch

      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 A/T assembly harness connector.
    3. Check continuity between A/T assembly harness connector F9 terminals 5, 10 and ground.

      Continuity should exist. 

      Fig 3: Checking Continuity Between A/T Assembly Harness Connector F9 Terminals 5, 10 And Ground
      G04875878Courtesy of NISSAN NORTH AMERICA, INC.

      If OK, check harness for short to ground and short to power.

      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 items:

    • The A/T assembly harness connector terminals for damage or loose connection with harness connector.

      OK or NG 

      OK: GO TO 6.

      NG: Repair or replace damaged parts.

  6. PERFORM SELF-DIAGNOSIS 

    Perform self-diagnosis. Refer to "CONSULT FUNCTION (TRANSMISSION) ".

    OK or NG 

    OK: INSPECTION END 

    NG-1: Self-diagnosis does not activate: GO TO 7.

    NG-2: DTC is displayed: Check the malfunctioning system. Refer to "CONSULT FUNCTION (TRANSMISSION) ".

  7. CHECK TERMINAL CORD ASSEMBLY 
    1. Remove control valve with TCM. Refer to "CONTROL VALVE WITH TCM ".
    2. Disconnect A/T assembly harness connector and TCM connector.
    3. Check continuity between A/T assembly harness connector terminals and TCM connector terminals.
      Item Connector Terminal Continuity
      A/T assembly harness connector F9 1 Yes
      TCM connector F502 9
      A/T assembly harness connector F9 2 Yes
      TCM connector F502 10
      A/T assembly harness connector F9 6 Yes
      TCM connector F502 4
      Fig 4: Checking Continuity Between A/T Assembly Harness Connector Terminals And TCM Connector Terminals
      G04875879Courtesy of NISSAN NORTH AMERICA, INC.
    4. Check continuity between A/T assembly harness connector terminals and TCM connector terminals.
      Item Connector Terminal Continuity
      A/T assembly harness connector F9 5 Yes
      TCM connector F504 21
      A/T assembly harness connector F9 10 Yes
      TCM connector F504 22
      Fig 5: Checking Continuity Between A/T Assembly Harness Connector Terminals And TCM Connector Terminals
      G04875880Courtesy of NISSAN NORTH AMERICA, INC.
    5. If OK, check harness for short to ground and short to power.

      OK or NG 

      OK: Replace the control valve with TCM. Refer to "CONTROL VALVE WITH TCM ".

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

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