Accelerator Pedal Position Sensor: Description and Operation

GF30.20-P-2010IC Component Description For The Accelerator Pedal Sensor
- ENGINE 647.961 in MODEL 211
- ENGINE 648.960 in MODEL 220
- ENGINE 648.961 in MODEL 211

Arrangement





B37 Accelerator pedal sensor

The accelerator pedal sensor is located above on the accelerator pedal module in the driver footwell at the right front.





View of accelerator pedal module
B37 Accelerator pedal sensor
a Kick-down simulator (or kickdown switch (S16/6))

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 enable the driver to sense with his foot the point at which the accelerator pedal is fully depressed (full load position).

For model 220 until model year 02 the kickdown switch switch was installed instead of the kick-down simulator.





Body (internal circuit)
1 Pin 1: Power supply (5 V) from CDI control unit (N3/9)
3 Pin 3: Ground connection
4 Pin 4: Signal voltage 1 (approx. 0.20 to 2.25 V)
5 Pin 5: Signal voltage 2 (approx. 0.40 to 4.50 V)
6 Pin 6: Ground connection
B Magnetic flux density
LL Closed throttle position.
FL Full-load position
X Hall element

Function
The accelerator pedal sensor consists of a shaft with a ring magnet. This rotates in a printed circuit board with stator in the two fixed Hall elements. This produces a change in the voltage.
Information on the accelerator pedal position is transmitted in the form of two signal voltages (0.20 to 2.25 V and 0.40 to 4.50 V) to the CDI control module.

The accelerator pedal sensor can only be replaced completely by an accelerator pedal module.