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Home >> Infiniti >> 2014 >> QX60 Base, FWD >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Body Control System (Except Hybrid) >> DTC/Circuit Diagnosis >> Power Supply And Ground Circuit >> Diagnosis Procedure

Diagnosis Procedure

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".

  1. CHECK FUSE AND FUSIBLE LINK 

    Check that the following fuse and fusible link are not blown.

    Terminal No. Signal name Fuse and fusible link No.
    139 Fusible link battery power O (40A)
    131 BCM battery fuse 1 (10A)

    Is the fuse or fusible link blown? 

    YES: Replace the blown fuse or fusible link after repairing the affected circuit.

    NO: GO TO 2

  2. CHECK POWER SUPPLY CIRCUIT 
    1. Disconnect BCM connector M81.
    2. Check voltage between BCM connector M81 terminals 131, 139 and ground.
      BCM Ground Voltage (Approx.)
      Connector Terminal
      M81 131 - Battery voltage
      139

      Is the inspection result normal? 

      YES: GO TO 3

      NO: Repair or replace harness or connectors.

  3. CHECK GROUND CIRCUIT 

    Check continuity between BCM connector M81 terminals 134, 143 and ground.

    BCM Ground Continuity
    Connector Terminal
    M81 134 - Yes
    143

    Is the inspection result normal? 

    YES: Inspection End.

    NO: Repair or replace harness or connectors.