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9
SAS Calibration
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
NOTE
1. Autel accepts no responsibility for any accident or injury arising from
servicing the SAS system. When interpreting DTCs retrieved from the
vehicle, always follow the manufacturer
’s recommendation for repair.
2. All software screens shown in this manual are examples, actual test
screens may vary for each vehicle being tested. Observe the menu titles
and onscreen instructions to make correct option selections.
3. Before starting procedure, make sure vehicle has ESC. Look for button
on dash.
Take
Toyota
as an example.
While performing the
Zero Point Calibration
on Toyota vehicles, do not tilt,
move or shake the vehicle. The vehicle must remain in a stationary condition
throughout the entire process. Be sure to perform the procedure on a level
surface with an inclination of less than 1%.
