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Diagnostic Test

WARNING: This page is about a different car, the 2012 RAM Pickup and 2012 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. VERIFY THE DTC IS ACTIVE 
    NOTE:

    For vehicle communication problems, use the scan tool to refer to the Network Review Screen. The screen depicts a high level view of the vehicle network. Fault and problem areas appear in red. Selecting any of the network components allows access to the source of the problem.

    1. Turn the ignition on.
    2. With a scan tool, read DTCs.

      Is the DTC active at this time?

      Yes 

      • Diagnose the U0002-00 CAN C BUS OFF PERFORMANCE as the U0001 CAN C BUS CIRCUIT test.  Refer to DIAGNOSIS AND TESTING and perform the U0001-Can C Bus diagnostic procedure.

      No 

      • Refer to  DIAGNOSIS AND TESTING  and perform the Stored Lost Communication DTCs diagnostic procedure.
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