C1204
C1204 AWD SOLENOIDDescription
^ Controls electric controlled coupling by command current from AWD control unit.
DTC Logic
DTC DETECTION LOGIC
C1204:
DTC CONFIRMATION PROCEDURE
1. DTC REPRODUCTION PROCEDURE
With CONSULT-III
1. Turn the ignition switch OFF to ON.
2. Perform the self-diagnosis.
Is DTC "C1204" detected?
YES >> Proceed to diagnosis procedure. Refer to: "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
1. AWD SOLENOID VALVE POWER SUPPLY INSPECTION
1. Turn the ignition switch OFF.
2. Disconnect AWD control unit harness connector.
3. Turn the ignition switch ON.
CAUTION: Never start the engine.
4. Check the voltage between AWD control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Check the following. If any items are damaged, repair or replace damaged parts.
^ 10A fuse (#33) open
^ Short among 10A fuse (#33) connector, AWD control unit harness connector No. 9 terminal and the ground
^ Open between the battery and AWD control unit harness connector No. 9 terminal
2. AWD SOLENOID VALVE GROUND INSPECTION
1. Turn the ignition switch OFF.
2. 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)
Check the resistance between AWD control unit harness connector terminals.
Is the inspection result normal?
YES >> GO TO 5.
NO >> GO TO 4.
4. 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 terminals.
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 5.
NO >> Repair or replace damaged parts.
5. CHECK AWD SOLENOID
Check the resistance between AWD solenoid harness connector terminals.
Is the inspection result normal?
YES >> GO TO 6.
NO >> AWD solenoid is malfunctioning. Replace electric controlled coupling.
6. 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.