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
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