Auxiliary Powertrain Control Module
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.
Auxiliary Powertrain Control Module (APCM) is locate behind center of dash panel. Manufacturer does not provide removal and installation procedure for APCM.