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 DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE

NOTE:

Make sure the battery voltage is between 10 and 16 volts before proceeding.

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

Yes
- Refer to DTC INDEX and perform the CAN C Signal Missing - Bus Off Performance diagnostic procedure.
No
- Refer to STORED LOST COMMUNICATION DTCS and perform the Stored Lost Communication DTCs diagnostic procedure.