Communication System C

Check the 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.

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

OK or NG 

1. OK: Replace BCM
2. NG: Perform the following.
   • Repair or replace harness.
   • Replace with the previously installed BCM.