Pinpoint Test AE: The Trailer Battery Charging Is Inoperative
WARNING: This page is about a different car, the 2005 Ford Pickup, 2005 Ford F550 Super Duty, 2005 Ford F450 Super Duty, and 2005 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
- AE1 CHECK VOLTAGE FOR THE BATTERY CHARGE AT THE TRAILER TOW CONNECTOR
- Key in OFF position.
- Disconnect: Trailer Tow C4099 (7-pin).
- Disconnect the trailer from the vehicle.
- Key in ON position.
- Measure the voltage between trailer tow C4099-5, circuit 49 (OG) and ground.
- Is the voltage greater than 10 volts?
- Yes : Vehicle is operating correctly. HAVE the trailer repaired by an authorized camper/trailer repair center.
- No : GO to AE2.
- AE2 CHECK CIRCUIT 49 (OG) FOR AN OPEN
- Key in OFF position.
- Disconnect: Central Junction Box (CJB) C270k.
- Key in ON position.
- Measure the voltage between CJB C270k-4, circuit 49 (OG), (component side) and ground.
- Is the voltage greater than 10 volts?
- Yes : REPAIR the circuit. TEST the system for normal operation.
- No : INSTALL a new CJB. TEST the system for normal operation.