Diagnostic Test

WARNING: This page is about a different car, the 2012 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.

ACTIVE DTC
1. Ignition on, engine not running.
2. With a scan tool, read PCM DTCs.
  Is the DTC active at this time?
  
  Yes
  - Refer to DIAGNOSIS AND TESTING and perform the U0101-Lost Communication with TCM diagnostic procedure.
  No
  - Refer to DIAGNOSIS AND TESTING and perform the Stored Lost Communication DTCs diagnostic procedure.