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 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 DTCs.
  Is this DTC active at this time?
  
  Yes
  - Refer to U0168-LOST COMMUNICATION WITH VEHICLE SECURITY CONTROL MODULE (WIRELESS IGNITION NODE OR WIN) for 1500, 2500 and 3500 or U0168-LOST COMMUNICATION WITH VEHICLE SECURITY CONTROL MODULE (WIRELESS IGNITION NODE OR WIN) for 3500 Cab and Chassis, 4500 and 5500 diagnostic procedure.
  No
  - Refer to STORED LOST COMMUNICATION DTCS for 1500, 2500 and 3500 or STORED LOST COMMUNICATION DTCS for 3500 Cab and Chassis, 4500 and 5500.