Normal Operation - Manual Transmission
WARNING: This page is about a different car, the 2007 Ford Pickup, 2007 Ford F550 Super Duty, 2007 Ford F450 Super Duty, and 2007 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
Voltage is suppled to the reversing lamp relay coil directly from the PCM power relay. The reversing lamp relay coil ground is controlled by the reversing lamp switch through circuit 324 (YE/LG). The reversing lamp relay is supplied voltage from the CJB fuse 8 (15A). When the reversing lamp relay is energized, voltage is routed to the reversing lamps through circuit 140 (BK/PK).
Possible Causes
- Circuit 140 (BK/PK) short to voltage
- Circuit 324 (YE/LG) short to ground
- Circuit 963 (BK/LG) short to ground
- Reversing lamp relay
- Reversing lamp switch (manual transmission)
- CJB
- PCM (automatic transmission)