Diagnostic Test
VERIFY THE DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE
NOTE:
Make sure the battery is fully charged before proceeding.
- Turn the ignition on.
- With the scan tool, read the active DTCs.
Does the scan tool display: U0140-LOST COMMUNICATION WITH BODY CONTROL MODULE?
Yes
- Refer to NO RESPONSE FROM BCM (BODY CONTROL MODULE) 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.