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Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Infiniti M56 and 2013 Infiniti M37. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK TRUNK LID OPEN/CLOSE SIGNAL 
    1. Turn ignition switch OFF.
    2. Disconnect trunk closure assembly.
    3. Check voltage between trunk closure assembly harness connector and ground.
      (+) (-) Voltage
      Trunk closure assembly
      Connector Terminal
      T14 5 Ground 9 - 16 V

      Is the inspection result normal? 

      YES: GO TO  3.

      NO: GO TO 2.

  2. CHECK TRUNK LID OPEN/CLOSE SIGNAL CIRCUIT 
    1. Disconnect BCM connector.
    2. Check continuity between BCM connector and trunk closure assembly connector.
      BCM Trunk closure assembly Continuity
      Connector Terminal Connector Terminal
      M121 42 T14 5 Existed
    3. Check continuity between BCM connector and ground.
      BCM Ground Continuity
      Connector Terminal
      M121 42 Not existed

      Is the inspection result normal? 

      YES: Replace BCM. Refer to "REMOVAL AND INSTALLATION ".

      NO: Repair or replace harness.

  3. CHECK TRUNK CLOSURE ASSEMBLY GROUND CIRCUIT 

    Check continuity between trunk closure assembly connector and ground.

    Trunk closure assembly Ground Continuity
    Connector Terminal
    T14 2 Existed
    3

    Is the inspection result normal? 

    YES: GO TO 4.

    NO: Repair or replace harness.

  4. CHECK INTERMITTENT INCIDENT 

    Refer to "INTERMITTENT INCIDENT ".

    : INSPECTION END