Accelerator Pedal Position (App) Sensor
WARNING: This page is about a different car, the 2019 Jaguar XF. However, it is still accessible from the selected car via links, so may be relevant.
Accelerator pedal demand is communicated to the PCM by two potentiometers located in the APP sensor. The PCM uses the two signals to determine the position, rate of movement and direction of movement of the pedal.
The PCM supplies a 5V reference voltage and a ground for each potentiometer.