Sas - Xtool N9EV User Manual

SAS

Steering Angle Sensors (SAS) System Calibration permanently stores the current steering wheel position as the straight-
ahead position in the SAS EEPROM. Therefore, the front wheels and the steering wheel must be set exactly to the straight-
ahead position before calibration. In addition, the VIN is also read from the instrument cluster and stored permanently in the
SAS EEPROM. On successful completion of calibration, the SAS fault codes will be automatically cleared.
To reset the steering angle, you need to first find the relative zero point position for the car to drive in a straight line. Taking
this position as a reference, the ECU can calculate the accurate angle for left and right steering.
After replacing the steering angle position sensor, replacing steering mechanical parts (such as steering gearbox, steering
column, end tie rod, steering knuckle), performing four-wheel alignment, or repairing the car body, you must reset the
steering angle.
The operation guidelines of the SAS function are shown as below:
1. Enter the SAS menu and choose relevant models according to the vehicle being tested.
2. Enter the Set steering angle sensor menu and follow the instructions displayed.
3. Wait until the following instruction is displayed and press Yes after completing the instructions shown.
4. Follow the instructions displayed and press OK after completing the instructions shown.
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