Diagnostic Test

WARNING: This page is about a different car, the 2011 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 U0121-LOST COMMUNICATION WITH ABS and perform the U0121-Lost Communication with Anti-lock Brake Module diagnostic procedure.
  No
  - Refer to STORED LOST COMMUNICATION DTCS and perform the Stored Lost Communication DTCs diagnostic procedure.