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Steering Angle Sensor (SAS) Service
Steering Angle Sensor Calibration permanently stores the current steering
wheel position as the straight-ahead position in the steering angle sensor
EEPROM. Therefore, the front wheels and the steering wheel must be set
exactly to the straight-ahead position before calibration. In addition, the
vehicle identification number is also read from the instrument cluster and
stored permanently in the steering angle sensor EEPROM. On successful
completion of calibration, the steering angle sensor fault memory is
automatically cleared.
Calibration must always be carried out after the following operations:
Steering wheel replacement
Steering angle sensor replacement
Any maintenance that involves opening the connector hub from the
steering angle sensor to the column
Any maintenance or repair work on the steering linkage, steering gear
or other related mechanism
Wheel alignment or wheel track adjustment
Accident repairs where damage to the steering angle sensor or
assembly, or any part of the steering system may have occurred
Figure 5-17
Sample BMS Screen 8
