Rotor position sensor
New: The steering angle sensor in the steering column switch cluster (SZL) has been discontinued.
The steering wheel angle is now determined via the rotor position sensor of the electromechanical power steering (EPS). The rotor position sensor is integrated in the EPS control unit. The EPS supplies the non-linearised values for the steering angle. The ICM calculates the steering wheel angle.
There are 2 rotor position sensors (redundancy) on the printed circuit board of the control unit. Both sensors use the principle of the Hall effect (Hall sensor with magnet wheel). The magnet wheel is attached to the shaft of the servomotor.
| Item | Explanation |
|---|---|
| 1 | EPS control unit |
| 2 | 6-pin plug connection (steering momentum sensor) |
| 3 | Plug connection 2-pin (voltage supply) |
| 4 | six-pin plug connection |
| 5 | Servomotor |
Communication with the DSC (on FlexRay) and EPS (on PT-CAN) takes place via the central gateway module (ZGM). Depending on vehicle: Communication via Front Electronic Module (FEM).