Diagnostic Test

VERIFY DTC IS ACTIVE 

1. Turn the ignition on.
2. With the scan tool, read the active DTCs.

   Does the scan tool display; U0140-00 LOST COMMUNICATION WITH BODY CONTROL MODULE as active?

   Yes 

   • Refer to  Communication - Non-DTC Based Diagnostics  and perform the NO RESPONSE FROM BCM (BODY CONTROL MODULE) diagnostic procedure.

   No 

   • Refer to:  STORED LOST COMMUNICATION DTCS  and perform the Stored Lost Communication DTCs diagnostic procedure.