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Communication System C

WARNING: This page is about a different car, the 2004 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK HARNESS CONNECTOR 

    Check terminals (at the control unit and harness) on BCM and LCU for disconnection, bend, loose connection, and other malfunctions.

    OK or NG 

    1. OK: GO TO  2.
    2. NG: Repair the terminals and connectors.

  2. CHECK BCM 

    Replace the malfunctioning BCM with a known-good one, and carry out the communication diagnosis. Refer to IVMS Communication Diagnosis  .

    OK or NG 

    1. OK: The harness and connector is checked, and it is normal, replace BCM.
    2. NG: Repair the harness between the LCU and BCM control.

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