Steering Angle Sensor
1.Steering angle sensor
The Steering angle sensor is mounted at the bottom of the steering spindle at the base of the upper steering column assembly.
The sensor is equipped with a processor and is directly linked to the CAN bus to communicate with the ABS ECU.
The sensor utilizes two potentiometers to determine the steering angle and the rate of steering. These are the raw signals the steering angle microprocessor utilizes to create the steering angle signal for broadcast on the CAN bus.
If the ID differs due to component replacement it will be necessary to enter the diagnostic system of the ABS system to initiate the steering angle sensor calibration. DSC will not be available on the vehicle until the steering angle sensor is calibrated. Once complete a new ID number is generated and the DSC ECU and Steering angle sensor are properly mated.
The DSC logic checks the plausibility of the steering angle sensor against the other DSC inputs (front wheel speeds, rotation and DSC sensor). If battery voltage is interrupted, the current steering wheel rotation is recalculated by the ABS ECU evaluating the wheel speeds.
Replacement steering angle sensors must be coded when installed in the vehicle prior to the calibration procedure in order to add the VIN to the angle sensor. Re-calibration is carried out by turning the steering lock to lock with the engine running while stationary.