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.

VERIFY THE DTC IS ACTIVE
NOTE:
Make sure the IOD fuse is installed and the battery is fully charged before proceeding.
1. Turn the ignition on.
2. With the scan tool, read active DTC's.
  Is the DTC active at this time?
  
  Yes
  - Refer to U0121-LOST COMMUNICATION WITH ABS and perform the diagnostic procedure.
  No
  - Refer to STORED LOST COMMUNICATION DTC's and perform the diagnostic procedure.