C1667

C1667 LOCK INSERTION

Description
^ Wiring connected to 4WAS front actuator is integrated with 4WAS front actuator.
^ 4WAS front actuator rotates together with steering wheel.
^ 4WAS front actuator mainly consists of five components. [4WAS front lock solenoid valve (lock structure), front wheel steering angle sensor, 4WAS front motor, gear shaft, and spiral cable]
- 4WAS front lock solenoid valve (lock structure) is controlled by the 4WAS front control unit, and locks/ unlocks 4WAS front actuator.
- If a strong force (rotation direction) is applied to 4WAS front actuator, the locking mechanism (holder) absorbs the force and locks 4WAS front actuator.
- Front wheel steering angle sensor detects a turning angle of 4WAS front motor.
- 4WAS front motor controls number of revolutions by a command value from the 4WAS front control unit.
- ear shaft is an output axis of 4WAS front motor. (Gear shaft = 4WAS front motor revolution + steering angle)
- Spiral cables mean the power line and signal lines of 4WAS front motor.

DTC Logic

C1667:

DTC CONFIRMATION PROCEDURE

1.RECHECK DTC

With CONSULT-III
1. Start the engine.

CAUTION:
Stop the vehicle.

2. Steer 30° leftward slowly. Steer 30° rightward. Return the steering wheel to the straight-ahead position.
3. Turn the ignition switch OFF.
4. Turn the ignition switch ON.
5. Perform 4WAS front control unit self-diagnosis.
Is DTC "C1667" detected?
YES >> Proceed to diagnosis procedure. Refer to "Diagnosis Procedure".
NO >> INSPECTION END

Diagnosis Procedure

1.CHECK 4WAS FRONT LOCK SOLENOID VALVE (LOCK STRUCTURE)

With CONSULT-III
1. Start the engine.

CAUTION:
Stop the vehicle.

2. Steer 30° leftward slowly. Steer 30° rightward. Return the steering wheel to the straight-ahead position.
3. Turn the ignition switch OFF.
4. Turn the ignition switch ON.
5. Perform 4WAS front control unit self-diagnosis.
Is DTC "C1667" detected?
YES >> Replace 4WAS front actuator.
NO >> GO TO 2.

2.CHECK INFORMATION

With CONSULT-III
1. Check the "DATA MONITOR" value of each DTC detected with the self-diagnosis function. Refer to STC-142, "Reference Value". 4WAS Front Control Unit
2. Perform 4WAS front control unit self-diagnosis.
Is each data the standard value?
YES >> GO TO 1.
NO >> Replace 4WAS front control unit.

Special Repair Requirement

AFTER REPLACING 4WAS FRONT ACTUATOR
^ Perform 4WAS front actuator adjustment after replacing 4WAS front actuator. Refer to STC-28, "4WAS FRONT ACTUATOR NEUTRAL POSITION ADJUSTMENT: Special Repair Requirement (Pattern 2)". 4WAS Front Actuator Neutral Position Adjustment