Accelerator pedal sensor, component description - GF30.20-P-2010SM

ENGINE 113.986 in MODEL 215, 220

ENGINE 113.987 in MODEL 209

ENGINE 113.988 in MODEL 203

ENGINE 113.989 in MODEL 171

View of accelerator pedal module

Fig 1: Identifying Accelerator Pedal Sensor And Kickdown Simulator - Engine 113.988

Task

The accelerator pedal sensor converts the mechanical operation input by the accelerator pedal into an electrical voltage corresponding to the accelerator pedal position.

The kickdown simulator is not an electrical component. It is designed to make it easier for the driver to sense with his foot the point at which the accelerator pedal is fully depressed (full load position).

On models 215 and 220, up to MJ 02, the kick-down switch is fitted instead of the kick-down simulator (S16/6).

Design (internal circuit)

Fig 2: Identifying Accelerator Pedal Sensor Design (Internal Circuit)

Function

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

Information on the accelerator pedal position is sent as two voltages at pin 4 (at around 0.2 to 2.25 V) and at pin 5 (at around 0.4 to 4.5 V) to the ME control unit (N3/10).

The accelerator pedal sensor is supplied with 5 V voltage through pin 1 by the ME control unit.

Pin 3 and 6 are ground connections.

The accelerator pedal sensor can only be replaced completely with an accelerator pedal module!