Clutch Pedal Position (CPP) Switch
WARNING: This page is about a different car, the 1995 Ford RV Cutaway, 1995 Ford Econoline, 1995 Ford Cutaway, and 1995 Ford Club Wagon. However, it is still accessible from the selected car via links, so may be relevant.
The neutral drive input gives an indication of transmission load to the PCM. This signal affects air/fuel ratio and idle speed.