Diagnostic Test

WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

VERIFY DTC IS ACTIVE

NOTE:

Make sure the battery is fully charged before proceeding.

Turn the ignition on.
With the scan tool, read DTCs and record on the repair order.
Is the DTC active?

Yes
- Refer to U0155-87-LOST COMMUNICATION WITH CLUSTER/CCN - MISSING MESSAGE and perform the U0155-00-Lost Communication with Cluster/CCN diagnostic procedure.
No
- Refer to STORED LOST COMMUNICATION DTCS and perform the Stored Lost Communication DTCs diagnostic procedure.