C1204
C1204 AWD SOLENOIDDescription
Controls electric controlled coupling by command current from AWD control unit.
DTC Logic
C1204:
DTC CONFIRMATION PROCEDURE
1. DTC REPRODUCTION PROCEDURE
With CONSULT-III
1. Turn the ignition switch OFF to ON.
2. Perform AWD control unit self-diagnosis.
Is DTC "C1204" detected?
YES >> Proceed to diagnosis procedure. Refer 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. Refer to DLN-21, "Diagnosis Procedure". Power Supply and Ground Circuit
2. CHECK AWD SOLENOID 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 damaged 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.
4. Check the continuity between AWD solenoid harness connector and the ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace damaged parts.
4. CHECK AWD SOLENOID
Check the resistance between AWD solenoid harness connector terminals. Refer to "Component Inspection".
Is the inspection result normal?
YES >> GO TO 5.
NO >> AWD solenoid is malfunctioning. Replace electric controlled coupling.
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.
NO >> Repair or replace damaged 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 harness connector terminals.
Is the inspection result normal?
YES >> INSPECTION END
NO >> AWD solenoid is malfunctioning. Replace electric controlled coupling.