C1204

C1204 AWD SOLENOID





DTC Logic

DTC DETECTION LOGIC






DTC CONFIRMATION PROCEDURE
1.DTC REPRODUCTION PROCEDURE
With CONSULT-III
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. SEE Diagnosis Procedure.
NO - INSPECTION END




Diagnosis Procedure
1.CHECK AWD SOLENOID POWER SUPPLY (1)
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.





4. Turn the ignition switch OFF.

CAUTION:
Never start the engine.
5. Check the voltage between AWD control unit harness connector and ground.





Is the inspection result normal?
YES - GO TO 3.
NO - GO TO 2.
2.CHECK AWD SOLENOID POWER SUPPLY (2)
1. Turn the ignition switch OFF.
2. Check the 10A fuse (#33)
3. Check the harness for open or short between AWD control unit harness connector No.9 terminal and 10A
(#33).
Is the inspection result normal?
YES - Perform the trouble diagnosis for power supply circuit. Battery Power Supply.
NO - Repair or replace error-detected parts.
3.CHECK AWD CONTROL UNIT GROUND
Check the continuity between AWD control unit harness connector and ground.





Is the inspection result normal?
YES - GO TO 4.
NO - Repair or replace error-detected parts.
4.CHECK AWD SOLENOID CIRCUIT (1)
Check the resistance between AWD control unit terminals.





Is the inspection result normal?
YES - GO TO 7.
NO - GO TO 5.
5.CHECK AWD SOLENOID CIRCUIT (2)
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 6.
NO - Repair or replace error-detected parts.
6.CHECK AWD SOLENOID
Check AWD solenoid. SEE Component Inspection.
Is the inspection result normal?
YES - GO TO 7.
NO - AWD solenoid is malfunctioning. Replace electric controlled coupling. Exploded View.
7.CHECK TERMINALS AND HARNESS CONNECTORS
- Check AWD control unit pin terminals for damage or loose connection with harness connector.
- Check AWD solenoid pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES - Replace AWD control unit. Service and Repair.
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.