Case IH 5118-19 - UCM – UCM: Trailer brake controller present, but not installed

A hardware/software configuration mismatch where the system expects a module that is not physically installed, or a loss of CAN communication between the vehicle controller and the trailer brake module.

• MAGNUM AFS Connect

1. 1

   Hardware Verification: Physically inspect the tractor to determine if a trailer brake controller is actually installed.

2. 2

   Configuration Check: If the controller is not installed but code 5118-19 is active, check the UCM software configuration to see if the feature was accidentally enabled.

3. 3

   Communication Check: If the controller is installed and code 5118-13 is active, test the CAN communication network and wiring harness between the UCM and the trailer brake controller for open circuits, shorts, or high resistance.

1. 1

   Inspect the trailer brake controller and its wiring harness for physical damage, corrosion, or disconnected plugs.

2. 2

   If the tractor is equipped with a trailer brake controller, repair or replace the damaged CAN communication lines between the trailer brake controller and the UCM to resolve the loss of communication (Code 5118-13).

3. 3

   If the tractor is NOT equipped with a trailer brake controller but the UCM is searching for it (Code 5118-19), connect the Case IH diagnostic tool, navigate to the UCM configuration menu, and update the software configuration to reflect that the trailer brake controller is 'Not Installed'.

4. 4

   Clear the fault codes from the UCM and cycle the ignition key to verify the communication/configuration error does not return.