Diagnostic Test

IS DTC ACTIVE

NOTE:

For vehicle communication problems, use the scan tool to refer to the Network Review Screen. The screen depicts a high level view of the vehicle network. Fault and problem areas appear in red. Selecting any of the network components allows access to the source of the problem.

Turn the ignition on.
With a scan tool, read the active DTCs.
Does the scan tool display: U0111-00-LOST COMMUNICATION WITH BATTERY ENERGY CONTROL MODULE?

Yes
- Refer to DIAGNOSIS AND TESTING and perform the U0111-00-LOST COMMUNICATION WITH BATTERY ENERGY CONTROL MODULE diagnostic procedure.
No
- Refer to DIAGNOSIS AND TESTING and perform the STORED LOST COMMUNICATION DTCS diagnostic procedure.