Diagnostic Aids
WARNING: This page is about a different car, the 2003 Ford Pickup, 2003 Ford F550 Super Duty, 2003 Ford F450 Super Duty, 2003 Ford Excursion, and 2003 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Functions may not be available if operator has deprogrammed them.
Perform this test only when directed by a symptom test, or if no DTCs are present and Auxiliary Powertrain Control Module (APCM) does not control engine RPM. Auxiliary powertrain control system provides an operator interface to the drive-by-wire powertrain control system to effect charge protection, RPM control and manual throttle control between 1300-2500 RPM. This test is only intended to diagnose the following components and circuits:
- Wiring Harness Circuits (VPWR, GND, BUS (+), BUS (-) & Hi-Mount Brakelight)
- APCM