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BCM (BODY CONTROL MODULE): Diagnosis Procedure

  1. CHECK FUSE AND FUSIBLE LINK 

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

    Signal name Fuse and fusible link No.
    Battery power supply I
    10

    Is the fuse fusing? 

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

    NO: GO TO 2.

  2. CHECK POWER SUPPLY CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect BCM connectors.
    3. Check voltage between BCM harness connector and ground.
      Terminals Voltage (Approx.)
      (+) (-)
      BCM Ground
      Connector Terminal
      M118 1 Battery voltage
      M119 11

      Is the measurement value normal? 

      YES: GO TO 3.

      NO: Repair harness or connector.

  3. CHECK GROUND CIRCUIT 

    Check continuity between BCM harness connector and ground.

    BCM Ground Continuity
    Connector Terminal
    M119 13 Existed

    Does continuity exist? 

    YES: INSPECTION END

    NO: Repair harness or connector.

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