Accelerator Pedal Position Sensor: Description

The Accelerator Pedal Position Sensor (APPS) is a variable resistor that provides the PCM with an input signal (voltage) (Fig 1). The signal represents throttle blade position. As the position of the accelerator pedal changes, the resistance of the APPS changes (Fig 2).

Fig 1: Identifying Accelerator Pedal Position Sensor (APPS) Module

Courtesy of DAIMLERCHRYSLER CORP.

Fig 2: APPS Module Open

Courtesy of DAIMLERCHRYSLER CORP.