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: U1711-87-LOST COMMUNICATION WITH TCM?
Yes
- Refer to U1711-87-LOST COMMUNICATION WITH TCM/MTA and perform the U1711-87-Lost Communication with TCM diagnostic procedure.
No
- Refer to DIAGNOSIS AND TESTING and perform the Stored Lost Communication DTCs diagnostic procedure.