This function performs initiation and calibration of the active steering.
The function must be run after the following operations:
Control unit for active steering (AL) has been replaced.
Control unit steering column (SZL) has been replaced.
Control unit for integrated chassis management (ICM) has been replaced.
Steering gear has been replaced.
Work on the steering column.
Always before performing a wheel alignment.
After a steering angle calibration has been run.
Or replacement or reprogramming of the DSC control unit.
Test conditions:
Ignition on, engine off - the engine is started during the procedure.
There may be no control module faults in the following systems: Active steering (AL), Control unit steering column (SZL), Integrated chassis management (ICM).
The vehicle must be standing on level ground.
The steering wheel is straight and the front wheels point straight forward.
Procedure:
Start the function.
The servomotor's rotation position angle is reset.
Start the engine. Press "OK" to continue.
The active steering's end-positions are calibrated by turning the steering wheel back and forth.
Adaptation data is reset and fault memory for active steering is erased.
Turn off both the engine and the ignition. Press "OK" to continue.
After 10 seconds, turn on the ignition again. Press "OK" to continue.
If operation start/adjustment of active steering succeeded, the conditions are now OK for a shaft measurement/shaft alignment.
Press "YES" if a shaft measurement/shaft alignment should be done on the vehicle, press "NO" to exit the function.
To perform a shaft measurement/shaft alignment, the engine must be started and the front wheels must be in the straight ahead position. Press "OK" to continue.
Set the total steering angle to 0° (+/-1°) by turning the steering wheel. Press "OK" to continue.
After a correct setting, turn off the engine and turn on the ignition again. Press "OK" to continue.
Now run the shaft measurement/shaft alignment, always keep an eye on the total steering angle shown. The value must stop at 0° (+/-1°) during the shaft measurement/shaft alignment.
Following shaft measurement/shaft alignment. Press "OK" to exit the function.
The function is complete.
If the vehicle is equipped with EPS (electric power steering) the "Adaptation of end-positions" function must now be run in the EPS control module.