Diagnostic Test

VERIFY THE DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE

NOTE:

Make sure the IOD fuse is installed and the battery is fully charged before proceeding.

Turn the ignition on.
With the scan tool, read the active DTCs.
Is this DTC active?

Yes
- Refer to the TIPM DIAGNOSTIC CODE INDEX and perform the U0184-87-Lost Communication with Radio - Missing Message diagnostic procedure.
No
- Perform the Stored Lost Communication DTCs diagnostic procedure. Refer to STORED LOST COMMUNICATION DTCS .