Diagnostic Test

WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

INTEGRATED TRAILER BRAKE MODULE (ITBM) INTERNAL CONDITION
1. The ITBM is reporting internal errors.
  NOTE:
  Before continuing, check the ITBM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.
2. Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits.
3. Perform any Technical Service Bulletins (TSB) that may apply.
  Were there any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the ITBM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Replace the Integrated Trailer Brake Module (ITBM) in accordance with the Service Information.
  - Perform the ITBM VERIFICATION TEST. Refer to STANDARD PROCEDURE .