Accelerator Pedal Position (APP) Sensor
WARNING: This page is about a different car, the 2004 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.
The accelerator pedal position (APP) sensor is mounted on the accelerator pedal. The APP detects the position of the accelerator pedal and inputs this information as a voltage to the powertrain control module (PCM). The PCM uses the APP sensor information to aid in determining shift scheduling, electronic pressure control (EPC) and torque converter (TCC) control.