Operation Feature

4WAS FRONT ACTUATOR

It is driven by 4WAS front motor.
The front steering gear ratio (4WAS front actuator) changes with 4WAS front motor and the gear shaft when releasing the lock structure (4WAS front lock solenoid valve).

NOTE: The lock structure is released when turning 4WAS lock solenoid valve ON.

The lock structure (holder) absorbs force and applies the lock when applying strong force to 4WAS front actuator.

CAUTION: Replace 4WAS front actuator when the system breaks down due to the excessive external force (rotating direction) applied to 4WAS front actuator.

4WAS REAR ACTUATOR

It is driven by 4WAS rear motor.
The irreversible efficiency performance hypoid 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.