Inspection and Verification
WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
- Verify the customer concern.
- Verify the exterior lighting system of the vehicle is operating correctly. If not, refer to the appropriate PINPOINT TEST.
- Visually inspect for obvious signs of electrical damage.VISUAL INSPECTION CHART
Electrical - Battery Junction Box (BJB) fuse(s):
- 22 (30A) (Trailer Brake Control (TBC) module)
- 26 (30A) (trailer tow parking lamps)
- 55 (10A) (trailer tow battery charge relay coil)
- 70 (10A) (trailer tow reversing lamps)
- 90 (25A) (trailer tow battery charge relay switch side)
- 100 (25A) (trailer tow turn relays)
- Body Control Module (BCM) fuse 31 (5A) (stoplamp switch input)
- Wiring, terminals or connectors
- Trailer tow connector
- Trailer tow stop/turn relays
- Trailer tow battery charge relay
- Trailer tow parking lamp relay
- TBC module (aftermarket)
- Trailer
- Battery Junction Box (BJB) fuse(s):
- If the concern is not visually evident, verify the symptom. GO to SYMPTOM CHART .