Steering Angle Sensor

Steering angle sensor
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The task of the steering angle sensor is to record the steering wheel angle while driving.
The EDC control unit processes both the real steering angle as well as the steering angle speeds, i.e. changes in angle. In this way, the variables of the steering angle as well as the steering angle speed have an influence on the switching logic of the EDC system.
The steering angle sensor is mounted on the steering column spindle.The sensor consists of 2 wipers offset by 90 degrees. The measuring range of the steering angle sensor extends from 180 degrees left to 180 degrees right and the straight-ahead position, i.e. the centre position of the steering wheel marks the 0 degree setting.

Important!
If the steering angle sensor is changed or if it is necessary to carry out work on the front axle system, front wheels/steering system, the so-called steering angle offset must be carried out on completion of this work.The diagnosis program is used for this purpose.
The steering angle offset is selected under the point SERVICE FUNCTIONS. After setting the front wheels in the straight ahead-position, the control unit carried out the offset procedure automatically after pressing the confirmation button. The 0 degrees setting of the steering angle sensor now agrees with the physical straight-ahead position of the front wheels.
Slight deviations which may occur because the straight-ahead position of the steering wheels can only be set by eye, are compensated by the EDC control unit itself when driving.
The EDC control unit powers the steering angle sensor with a 5 Volt supply.Data transfer to the control unit takes place via 2 signal lines.