4WAS SYSTEM: 4WAS Rear Actuator: Notes

4WAS rear actuator mainly consists of three components. (4WAS rear motor, motor shaft/HRH gear and rear wheel steering angle sensor)
4WAS rear actuator is activated by 4WAS rear motor.
The irreversible efficiency performance hypoid gear (motor shaft/HRH gear) secure the toe-stiffness of rear wheels against the road external force and keep the steering angle when system is malfunction.
The power from the pinion gear (motor side) is transmitted, but the pinion gear does not rotate as caused by the gear mechanical characteristics (teeth angle) even though the ring gear (tire side) starts to rotate.
The rear wheel steering angle increased/decreased degree is detected.