C1204

C1204 AWD SOLENOID

Description

Controls electric controlled coupling by command current from AWD control unit.


DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. DTC REPRODUCTION PROCEDURE

With CONSULT
1.Turn the ignition switch OFF to ON.
2.Perform self-diagnosis for "ALL MODE AWD/4WD".
Is DTC "C1204" detected?
YES- Proceed to diagnosis procedure. .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK AWD SOLENOID POWER SUPPLY

1.Turn the ignition switch OFF.
2.Disconnect AWD control unit harness connector.
3.Check the voltage between AWD control unit harness connector and ground.





Is the inspection result normal?
YES- GO TO 2.
NO- Perform the trouble diagnosis for power supply circuit. Power Supply And Ground Circuit.

2. CHECK AWD CONTROL UNIT GROUND

Check the continuity between AWD control unit harness connector and ground.





Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace error-detected parts.

3. CHECK AWD SOLENOID CIRCUIT

1.Disconnect AWD solenoid harness connector.
2.Check the continuity between AWD control unit harness connector and AWD solenoid harness connector.





3.Check the continuity between AWD control unit harness connector and the ground.





Is the inspection result normal?
YES- GO TO 4.
NO- Repair or replace error-detected parts.

4. CHECK AWD SOLENOID

Check the resistance between AWD solenoid harness connector terminals. .
Is the inspection result normal?
YES- GO TO 5.
NO- AWD solenoid is malfunctioning. Replace electric controlled coupling. Exploded View (VQ-35HR), Exploded View (VK-50VE).

5. CHECK TERMINALS AND HARNESS CONNECTORS

1.Check AWD control unit pin terminals for damage or loose connection with harness connector.
2.Check AWD solenoid pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES- Replace AWD control unit. Exploded View.
NO- Repair or replace error-detected parts.


Component Inspection


1. CHECK AWD SOLENOID

1.Turn the ignition switch OFF.
2.Disconnect AWD solenoid harness connector.
3.Check the resistance between AWD solenoid connector terminals.





Is the inspection result normal?
YES- INSPECTION END
NO- AWD solenoid is malfunctioning. Replace electric controlled coupling. Exploded View (VQ-35HR), Exploded View (VK-50VE).