Communication System A

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

OK or NG 

1. OK: The harness and connector is checked, and it is normal, replace BCM
2. NG: GO TO 2.

1. Replace with the previously installed BCM.
2. Replace the LCU with a known-good one, and carry out the communication diagnosis. Refer to "IVMS COMMUNICATION INSPECTION. ".

OK or NG 

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