Pedal Position Sensor/Switch D Input Low
– Accelerator Pedal Position (APP) Sensor harness is open or shorted
– Accelerator Pedal Position (APP) Sensor poor electrical connection
– Faulty Control Module ( )
The Accelerator Pedal Position (APP) sensor is mounted on theto detect the angle of the accelerator pedal. This sensor is electronically controlled and uses Hall-effect elements.
In the accelerator pedal position sensor, the voltage applied to terminals VPA and VPA2 of the Engine Control Module (ECM) changes between 0 V and 5 V in proportion to the angle of the accelerator pedal. The VPA is a signal to indicate the actual accelerator pedal angle and is used for thecontrol. VPA2 is used to detect malfunctions of the sensor itself.
The ECM monitors the accelerator pedal angle from VPA and VPA2 signal outputs, and controls themotor based on these signals.