C1669

C1669 INCOMPLETE LOCK RELEASE

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.
- 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


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. PRECONDITIONING

If "DTC CONFIRMATION PROCEDURE" has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.
- GO TO 2.

2. RECHECK DTC

With CONSULT
1.Turn the ignition switch from OFF to ON.
2.Perform 4WAS front control unit self-diagnosis.
Is DTC "C1669" detected?
YES- Proceed to diagnosis procedure. .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK INFORMATION

- Check that any item below is applicable.
- The steering force is heavy when 4WAS warning lamp is ON.
- The power steering system error is detected (oil leakage, belt tension, steering force etc.).
Is the item applicable?
YES- Perform the symptom diagnosis for the steering system. Noise, Vibration and Harshness (NVH) Troubleshooting.
NO- Replace 4WAS front actuator. Service and Repair.


Special Repair Requirement


AFTER REPLACING 4WAS FRONT ACTUATOR

- Perform 4WAS front actuator adjustment after replacing 4WAS front actuator. Special Repair Requirement (Pattern 2).