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 the active DTCs.
Does the scan tool display; U0020-00-CAN B BUS OFF PERFORMANCE as active?

Yes
- For this code, perform the U0011-00-CAN INTERIOR BUS OFF PERFORMANCE diagnostic procedure in this section. Refer to U0011-00-CAN INTERIOR BUS OFF PERFORMANCE .
No
- Refer to STORED LOST COMMUNICATION DTCS and perform the Stored Lost Communication DTCs diagnostic procedure.