Symptom Chart
WARNING: This page is about a different car, the 2009 Ford RV Cutaway, 2009 Ford Econoline, 2009 Ford E450 Super Duty, and 2009 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
Symptom Chart
SYMPTOM CHART
| Condition |
Possible Sources |
Action |
- No communication with the Trailer Brake Control (TBC) module
|
- Fuse(s)
- Wiring, terminals or connectors
- TBC
module
|
|
- Without
a trailer connected to the vehicle and with the ignition key turned to the RUN position, the TBC
module display does not light up/prove out
|
- Fuse(s)
- Wiring, terminals or connectors
|
|
|
|
|
- Without
a trailer connected to the vehicle and with the ignition key turned to the RUN position, the TBC
module display lights up/proves out, but does not light up afterward (will not illuminate with input from the gain + button or slide lever)
|
- Instrument Cluster (IC) not configured for TBC
system
|
|
- When the ignition key is turned to the RUN position, the TBC
module display does light up/prove out but the trailer brakes are inoperative
|
- Fuse(s)
- Wiring, terminals or connectors
- TBC module
- Customer trailer
|
|
- The trailer brakes are always engaged
|
- Wiring, terminals or connectors
- TBC
module
- Customer trailer
|
|
- The message center intermittently displays TRAILER DISCONNECTED or WIRING FAULT ON TRAILER while towing a trailer
|
- Wiring, terminals or connectors
- Customer trailer
|
|
- The message center displays TBC
FAULT
|
- DTCs present
- IC
not configured for TBC
system
|
|
- The message center displays TRAILER FAULT
|
- Wiring, terminals or connectors
- TBC module
- Customer trailer
|
|