Diagnostic Test
VERIFY THE DTC IS ACTIVE
- Ignition on, engine not running.
- With the scan tool, read the DTCs.
Is the DTC Active at this time?
Yes
- Refer to the BODY CONTROL MODULE (BCM) - DIAGNOSTIC CODE INDEX - 500 & 500C and perform the appropriate diagnostic procedure.
No
- Refer to STORED LOST COMMUNICATION DTCS and perform the Stored Lost Communication DTCs diagnostic procedure.