Diagnostic Test

VERIFY 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: U0155-LOST COMMUNICATION WITH CLUSTER/CCN?

Yes
- Refer to DTC INDEX and perform the U0155-Lost Communication with Cluster/CCN diagnostic procedure.
No
- Refer to STORED LOST COMMUNICATION DTCS and perform the Stored Lost Communication DTCs diagnostic procedure.