Diagnostic Test

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

CHECK FOR ACTIVE DTC
1. With the scan tool, read the active DTCs.
2. Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 90 seconds.
3. With the scan tool, read the active DTCs.
  Does the scan tool display this DTC as active?
  
  Yes
  - Go To 2.
  No
  - If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
LEFT TRAILER TOW RELAY
1. Turn the ignition off.
2. Install a substitute relay in place of the original Left Trailer Tow Relay.
3. Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 90 seconds.
4. With the scan tool, read the active FCM DTCs.
  Does the scan tool display this DTC as active?
  
  Yes
  - Replace the FCM in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Replace the original Left Trailer Tow Relay.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .