| Item name | Spare part number | Description |
| 1 | - | Gear |
| 2 | - | electrical connector |
The steering wheel angle sensor detects the steering angle and rate of change of the steering wheel angle. This data is transmitted over the high speed CAN bus (controller network) in place with a quality factor and are used by the ABS module (anti-lock braking system) to control CBC and DSC.
The steering wheel angle sensor is attached to the steering column pivot bracket with three screws. The steering angle sensor gear engages with the plastic drive flange on the lower column shaft. Inside the steering angle sensor, a gear meshes with a gear train containing magnets. The interface between the vehicle's wiring and the steering wheel angle sensor's internal circuits is provided by an eight-pin electrical connector.
The steering wheel angle sensor uses the magnetic resistivity effect to evaluate the direction of magnetic fields to measure the angular position of the lower shaft and thus the steering angle. As the steering wheel is turned, the lower steering column shaft turns a gear in the steering angle sensor, which drives the gear train and rotates the magnets on the gears. The direction of the magnetic fields is constantly monitored by the steering angle sensor and converted into steering angle and steering wheel speed.
Whenever the following conditions are met together, the steering angle sensor performs a plausibility check:
- The car is moving in a straight line.
- The vehicle speed is 20-25 km/h.
- The top stage of the transfer case is on.
- The brake pedal is not pressed.
- ABS not active (anti-lock braking system), DSC and ETC.
The steering angle sensor uses wheel speed, yaw, and lateral acceleration signals to detect straight ahead motion. If all conditions are met at the same time, the steering angle sensor checks the steering angle, which should be 0±15°. If the steering angle is out of the specified range during two consecutive checks, the steering angle sensor changes the quality factor to "accuracy does not match the specified" until the end of the current ignition cycle and stores a fault code. At the beginning of each ignition cycle, a signal quality factor is set "with a given accuracy".
The status of the steering angle sensor can be determined using T4.
When replacing a steering angle sensor, the new sensor must be calibrated using T4. Also, recalibration of the steering wheel angle sensor is required whenever its position relative to the steering column is violated, as well as when the upper and lower parts of the steering column are separated.
C0862 Steering Angle Sensor Wiring Harness Connector
C0862 Steering Angle Sensor Wiring Harness Connector Pins
| contact no | Description | Enter exit |
| 1-4 | Not used | - |
| 5 | Ignition power | Entrance |
| 6 | High speed CAN bus signal (controller network) | Enter exit |
| 7 | High Speed CAN Bus Signal Low (controller network) | Enter exit |
| 8 | Weight | - |
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