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.

VERIFY DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE

NOTE:

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

Cycle the ignition on.
With the scan tool, read the active DTCs.
Does the scan tool display: U0001-00-CAN C BUS?

Yes
- For the DTC U0001-00 Can C Bus, use the U0002-00 Can C Bus Off Performance diagnostic procedure.
- Refer to the DTC INDEX - 1500 and perform the U0002-CAN C Bus Off Performance diagnostic procedure.
No
- Refer to DIAGNOSIS AND TESTING and perform the Stored Lost Communication DTCs diagnostic procedure.