Pedal position sensor
The pedal position sensor is mounted on the servo unit in the engine compartment. The sensor has several functions. It is used to:
- register rapid pedal movements for emergency brake assistance
- shut off the traction control during braking
- to diagnose the function of the brake lamp switch
- it is used by the engine control module (ECM) for cruise control. The signal is transmitted via the control area network (CAN).
The sensor, which responds to the push rod for the pedal, is a sliding potentiometer. 0 mm corresponds to 0 V and 38.5 mm movement corresponds to approximately 95 % of battery voltage (Ubat ).