Diagnostic Test

WARNING: This page is about a different car, the 2014 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR AN ACTIVE DTC

NOTE:

If DTC U0002-00-CAN C BUS OFF PERFORMANCE is set in the Body Control Module (BCM), diagnose this DTC before continuing with this diagnostic procedure.

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

Yes
- Refer to DIAGNOSIS AND TESTING and perform the U0143-00-LOST COMMUNICATION WITH MULTI-PURPOSE MODULE diagnostic procedure.
No
- Refer to DIAGNOSIS AND TESTING and perform the STORED LOST COMMUNICATION DTCS diagnostic procedure.