RAM 2500 Truck 2WD V10-8.0L VIN W (2003)
Accelerator Pedal Position Sensor: Description and Operation
ACCELERATOR PEDAL POSITION SENSOR
The Accelerator Pedal Position Sensor (APPS) assembly is located under the vehicle battery tray. A cable connects the assembly to the accelerator
pedal. A plastic cover with a movable door is used to cover the assembly.
The APPS is used only with the 5.7L V-8 engine.
The Accelerator Pedal Position Sensor (APPS) is a linear potentiometer. It provides the Powertrain Control Module (PCM) with a DC voltage signal
proportional to the angle, or position of the accelerator pedal. The APPS signal is translated (along with other sensors) to place the throttle plate (within
the throttle body) to a pre-determined position.
A mechanical cable is used between the accelerator pedal and the APPS assembly. Although a cable is used between the pedal and APPS, a mechanical
cable is not used at the throttle body. Throttle plate position is electrically determined.
