Diagnostic Test
VERIFY IF THE DTC IS ACTIVE
NOTE:
Make sure the battery is fully charged before performing any diagnostic procedure.
With the scan tool, refer to the Network Review Screen to display a high level view of the vehicle communication network. Modules shown in red are problem areas.
Always diagnose any Body Control Module (BCM) DTCs first before proceeding.
- Turn the ignition on.
- With the scan tool, read DTCs.
Does the scan tool display this DTC as active?
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 DTC diagnostic procedure.