Symptom Chart

WARNING: This page is about a different car, the 2012 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM CHART

Condition	Possible Sources	Action
No communication with the Trailer Brake Control (TBC) module	Fuse(s) Wiring, terminals or connectors TBC module	REFER to MODULE COMMUNICATIONS NETWORK .
The trailer brakes are inoperative	Fuse(s) Wiring, terminals or connectors Trailer tow connector TBC module Customer trailer	GO to PINPOINT TEST B .
The trailer brakes are always engaged	Wiring, terminals or connectors TBC module Customer trailer	GO to PINPOINT TEST C .
The message center intermittently displays TRAILER DISCONNECTED or WIRING FAULT ON TRAILER while towing a trailer	Wiring, terminals or connectors Customer trailer	GO to PINPOINT TEST A .
The message center displays TBC FAULT	DTCs present	RETRIEVE and RECORD the DTCs. REFER to the Trailer Brake Control (TBC) Module DTC Chart .
The message center displays TRAILER BRAKE MODULE FAULT when the vehicle is not equipped with a TBC module	Incorrect IPC configuration	CONFIGURE the IPC. REFER to PROGRAMMABLE PARAMETERS .
The message center displays WIRING FAULT ON TRAILER	Wiring, terminals or connectors TBC module Customer trailer	GO to PINPOINT TEST A .