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Accelerator Pedal Sensor, Basic Function - GF30.20-P-2000A

Engine all (CAR) 

Fig 1: Accelerator Pedal Sensor Components Location - Engine All Car (Shown For Model 177)
G13771585Courtesy of MERCEDES-BENZ USA

Sample display for model 177 

Overview 

This document contains information on:

General 

The accelerator pedal sensor converts the mechanical actuation of the accelerator pedal into a voltage signal that corresponds to the accelerator pedal position.

Task 

The accelerator pedal sensor is integrated in the accelerator pedal pivot. The accelerator pedal sensor consists of a shaft with ring magnet. The ring magnet rotates in a printed circuit board with stator in two fixed Hall elements. This produces a change in the voltage.

Limp-home mode 

If the signal voltage of a Hall element fails, the signal voltage of the second Hall element is used and the engine enters limp-home mode.