9-3 (9440) V6-2.8L Turbo (2008)
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The position sensor (pulse sensor) for the seat is a Hall sensor integrated in the motor that changes the angle of the seat. The motor shaft has a 2-pole
magnetic ring (north/south) mounted on it. There is a Hall sensor in the motor end plate that is sensitive to changes in magnetic field.
Connect
The Hall sensor element pin 4 is voltage fed with B+ from the seat control module (357Dk) pin 29.The Hall sensor element is influenced by the magnetic
ring, which changes polarity 2 times per revolution, the voltage from the Hall sensor pin 2 to the control module pin 30 is decisive in order to calculate
the speed. The control module input interprets a voltage of 1.1 to 2.5 V as low and a voltage between 3.5 and 4.8 V as high.
Diagram 4D/5D
Diagram CV
