Rear Actuator - Honda Prelude 1993 Service Manual

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Component Function & Operation

Roa? actuator:

The rear actuator is mounted at the rear oI the car to steer the rear wheels. The motor, built into the actuator, is made up

of a stato. with a permanent magnet. a rotor. and brushes that pass electricjty to the commutators. The motor is

mounted on the same axis as the steering shaft screw, making the rear actuator compact and light in weight. The rear ac-

tuato. also contains the rear main steering angle sensor and the rear sub steering angle sensor.

The 4WS control unit drives the electric motor with DC current. lt switches the current polarity to change the motor's

direction. Two strong return springs, one at each end ot the actuator, provide a centering action. They return the rear

wheels to the straight-ahead position whenever current is cut to the motor.

REAR SUB STEERING

ANGLE SENSOR

ACTUATOR HOUSING

REAR MAIN STE€RING

ANGLE SENSOB

RETURN SPRING

STEERII{G SHAFT SCREW

RECIRCULATING BALL SCREW

Mov6s to l€ft:

Moves to right:

The return spring compresses when the steering shaft

screw moves to right or left. When the motor is OFF,

the stesring shaft screw is held in the straight ahead

(neutral) position by the force oJ the return spring.

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