Communication System A

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

OK or NG? 

1. OK >> Replace BCM
2. NG >> GO TO 2.

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

OK or NG? 

1. OK >> Replace LCU
2. NG >> Perform the following.
   • Repair or replace communication harness between LCU and BCM.
   • Replace with the previously installed LCU.