Input Signals

Input Signals
^ DSC signals (wheel speeds, yaw rate and lateral acceleration)
^ Steering angle
^ Total (summation) steering angle
^ Position of electric servomotor of actuating unit
The active front steering control unit is initialized when the ignition is turned on.
The active front steering actuating unit cannot be activated during the initialization procedure. The sensor signals are checked and calibrated if necessary.
If faults are detected, either the Error fault status is adopted or yaw rate control is deactivated. In the case of the "Error" fault status, it is not possible to activate the actuating unit. The "Drive" status is adopted after successful initialization.
The active front steering control unit sends the current message corresponding to the required flow rate to the SGM via the PTCAN.