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.
  Is this DTC active?
  
  Yes
  - Refer to U0001-CAN C BUS for 1500, 2500 and 3500, or U0001-CAN C BUS CIRCUIT for 3500 Cab & 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.