Symptom Chart
WARNING: This page is about a different car, the 2012 Ford Pickup, 2012 Ford F550 Super Duty, 2012 Ford F450 Super Duty, and 2012 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
SYMPTOM CHART
| Condition |
Possible Sources |
Action |
- All the trailer lamps are inoperative
|
- Wiring, terminals or connectors
- Trailer tow connector
- Trailer
|
|
- The trailer stop/turn lamp is inoperative
|
- Fuse
- Wiring, terminals or connectors
- Trailer tow connector
- Trailer tow stop/turn relay
- Trailer
|
|
- The trailer parking lamps are inoperative
|
- Fuse
- Wiring, terminals or connectors
- Trailer tow connector
- Trailer tow parking lamp relay
- Trailer
|
|
- The trailer reversing lamps are inoperative
|
- Fuse
- Wiring, terminals or connectors
- Trailer tow connector
- Trailer tow reversing lamp relay
- Trailer
|
|
- The trailer lamps are on continuously
|
- Wiring, terminals or connectors
- Trailer tow relay
- Trailer
|
|
- The trailer battery charging is inoperative/does not operate correctly
|
- Fuse
- Wiring, terminals or connectors
- Trailer tow connector
- Trailer tow battery charge relay
- Trailer
|
|
- The trailer electric brakes are inoperative/always applied
|
- Fuse
- Wiring, terminals or connectors
- Trailer tow connector
- Trailer Brake Control (TBC) module (aftermarket)
- Trailer
- Body Control Module (BCM)
|
|