DTC C1909: 4WAS Main Control Unit: Description

4WAS rear actuator and the power steering solenoid valve is controlled by each sensor signal.
The fail-safe functions stops the rear wheel angle (the front wheel is the steering wheel cutting angle) when the electric components and the mechanical components are malfunctioning.
The protection function mode stops 4WAS system intermittently when the input signal does not input to 4WAS main control unit.
4WAS front control unit and 4WAS main control unit control the best control of 4WAS system by 4WAS communication line.