STEERING ANGLE SENSOR (SAS) 3. The steering angle sensor is fitted on the combiswitch. When the steering rotates the SAS inner part also rotates as it is locked to the clock spring. This way it can detect the angle through which the driver is rotating the steering. LOCATION The SAS is mounted on the combi-switch below the clock spring. OPERATING PRINCIPLE Steering Angle Sensor used for vehicle is an absolute angle measuring non-contact type sensor, it uses the Giant-Magneto-Resistive (GMR) effect for measuring the angle. The detection of the absolute angle is realized by means of magnetic toothed gears with different ratio called measuring gears. Steering wheel rotation will rotate these measuring gears, the GMR elements/sensors mounted above each of these gears change their resistance according to the magnetic field direction and detect the angular position of the measuring gears. The measured signals are signal conditioned and transmitted via CAN bus to the ESCi ECU MAKE OF THE SENSOR PIN OUT PIN NO DESCRIPTION 1 CAN L 2 CAN H 3 GROUND 4 VCC 5 NC 6 NC ELECTRONIC STABILITY CONTROL INTEGRATED PROGRAM (ESCi) 10
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