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5.3 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 recovering 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.
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