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Home >> Mercedes Benz >> 2009 >> E550 Base >> Repair and Diagnosis >> Body & Frame >> Sun Roof/T-Top/Convertible Top >> Sliding Roof, Soft Top -- E550 (211.072) >> Basic Knowledge >> Panoramic sliding roof position measurement, function - GF77.20-P-3008T

Panoramic sliding roof position measurement, function - GF77.20-P-3008T

MODEL 211.0 with CODE (413) Panorama sliding roof 

Position measurement 

The position counter in the overhead control panel control module (N70) counts the Hall pulses depending on the recognized direction of rotation of the panoramic sliding roof motor (M12/6m1).

Zero position 

The zero position is defined with the position "Panoramic sliding roof closed", i.e. the position counter is at zero.

Direction recognition 

The panoramic sliding roof Hall sensor 1 (M12/6b1) and panoramic sliding roof Hall sensor 2 (M12/6b2) are located on the shaft of the panoramic sliding roof motor (M12/6m1)

These respond to the movement of the magnet and each supply a square wave pulse for each revolution of the motor shaft.

The overhead control panel control module (N70) reads these Hall pulses.

The chronological offset between the pulses from the panoramic sliding roof Hall sensor 1 (M12/6b1) and pulses from the panoramic sliding roof Hall sensor 2 (M12/6b2) allows the overhead control panel control module (N70) to recognize the direction of rotation of the motor.

Overhead control panel control module, location/purpose/design GF82.20-P-4110T
Panorama sliding roof, location/purpose/design/function GF77.20-P-4104T