C1668
C1668 LOCK HOLDER GAP DETECTDescription
^ 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.
- Gear 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
C1668:
DTC CONFIRMATION PROCEDURE
1.RECHECK DTC
With CONSULT-III
1. Turn the ignition switch from OFF to ON.
2. Perform 4WAS front control unit self-diagnosis.
Is DTC "C1668" detected?
YES >> Proceed to diagnosis procedure. Refer to "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
1.PERFORM SELF-DIAGNOSIS (4WAS FRONT CONTROL UNIT)
With CONSULT-III
1. Start the engine.
CAUTION:
Stop the vehicle.
2. Perform 4WAS front control unit self-diagnosis. Check that DTC "C1668" is detected.
CAUTION:
^ Replace 4WAS front actuator when the diagnosis history remains.
^ Never repair the malfunctioning part in 4WAS front actuator adjustment without replacing 4WAS front actuator.
>> Replace 4WAS front actuator. Refer to STC-168, "Symptom Table". 4WAS Symptoms
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