Diagnostic Test

WARNING: This page is about a different car, the 2011 RAM Pickup and 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

VERIFY 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 the active DTCs.
  Does the scan tool display active: U0146-LOST COMMUNICATION WITH CENTRAL GATEWAY?
  
  Yes
  - Refer to U0141-LOST COMMUNICATION WITH IPM (FCM/TIPM) for 1500, 2500 & 3500 or U0141-LOST COMMUNICATION WITH IPM (FCM/TIPM) for 3500 CAB & CHASSIS, 4500 & 5500 . and perform the U0141-Lost Communication with IPM (FCM/TIPM) diagnostic procedure.
  No
  - Refer to appropriate Electrical Diagnostic Information . and perform the Stored Lost Communication DTCs diagnostic procedure.