C1661

C1661 4WAS FRONT LOCK SOLENOID VALVE





DTC Logic

DTC DETECTION LOGIC






DTC CONFIRMATION PROCEDURE
1.RECHECK DTC
With CONSULT-III
1. Turn the ignition switch from OFF to ON.
2. Perform self-diagnosis for "4WAS(FRONT)".
Is DTC "C1661" detected?
YES - Proceed to diagnosis procedure. SEE Diagnosis Procedure.
NO - INSPECTION END




Diagnosis Procedure
1.CHECK 4WAS FRONT LOCK SOLENOID VALVE CIRCUIT (1)
1. Turn the ignition switch OFF.
2. Disconnect 4WAS front control unit harness connector.
3. Check the resistance between 4WAS front control unit harness connectors.





4. Check the continuity between 4WAS front control unit harness connector terminal and the ground.





Is the inspection result normal?
YES - GO TO 4.
NO - GO TO 2.
2.CHECK 4WAS FRONT LOCK SOLENOID VALVE CIRCUIT (2)
1. Turn the ignition switch OFF.
2. Disconnect 4WAS front actuator harness connector.
3. Check the resistance between 4WAS front actuator harness connector and 4WAS front control unit harness connector.





Is the inspection result normal?
YES - GO TO 3.
NO - Repair or replace error-detected parts.
3.CHECK 4WAS FRONT SOLENOID VALVE
Check 4WAS front solenoid valve. SEE Component Inspection (4WAS Front Lock Solenoid Valve).
Is the inspection result normal?
YES - GO TO 4.
NO - Replace 4WAS front actuator. Removal And Installation.
4.CHECK INFORMATION
With CONSULT-III
1. Connect 4WAS front actuator harness connector.
2. Check the "DATA MONITOR" value of each DTC detected with the self-diagnosis function. 4WAS Main Control Unit.
Is each data the standard value?
YES - Check each harness connector pin terminal for disconnection.
NO - Replace 4WAS front control unit. 4WAS Front Control Unit.
- Before replacing 4WAS front control unit, record the self-diagnosis results (history). SEE Special Repair Requirement.




Component Inspection (4WAS Front Lock Solenoid Valve)
1.CHECK 4WAS FRONT SOLENOID VALVE
1. Turn the ignition switch OFF.
2. Disconnect 4WAS front actuator harness connector.
3. Check the resistance between 4WAS front actuator connectors.





4. Check the continuity between 4WAS front actuator connector and the ground.





Is the inspection result normal?
YES - INSPECTION END.
NO - Replace 4WAS front actuator. Removal And Installation.




Special Repair Requirement
Before replacing 4WAS front control unit, record the self-diagnosis results (history).

CAUTION:
- Never erase the memory (history) of self-diagnosis results when replacing 4WAS front control unit after diagnosis.
- Erase the memory of the self-diagnosis results (record) after printing out or recording all the values of "DATA MONITOR".