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Diagnosis Procedure

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK TCM POWER SOURCE STEP 1
    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
      G08165408Courtesy 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
      G08165409Courtesy of NISSAN NORTH AMERICA, INC.

      OK or NG 

      OK: GO TO  4.

      NG: GO TO 3.

  3. DETECT MALFUNCTIONING ITEM

    Check the following.

    • 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. 22, located in the fuse and fusible link block) and 10A fuse (No. 49, located in the IPDM E/R)
    • Ignition switch. Refer to "WIRING DIAGRAM - IGNITION POWER SUPPLY ".

      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 terminals and ground.
      Item Connector Terminal Continuity
      TCM F9 5, 10 - Ground Yes
      Fig 3: Checking Continuity Between A/T Assembly Harness F9 Connector Terminals 5, 10 And Ground
      G08165410Courtesy 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.

    • 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 "REMOVAL AND INSTALLATION ".
    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
      G08165411Courtesy 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
      G08165412Courtesy 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 "REMOVAL AND INSTALLATION ".

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

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