Diagnostic Test

CHECK IF THE DTC IS ACTIVE

NOTE:

Make sure the battery is fully charged before proceeding.

Turn the ignition on.
With the scan tool, read DTCs.
Does the scan tool display this DTC as active?

Yes
- Refer to the DTC INDEX article 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.