C1204

C1204 AWD SOLENOID

DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. PRECONDITIONING

If "DTC CONFIRMATION PROCEDURE" has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.
- GO TO 2.

2. PERFORM DTC CONFIRMATION

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)

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 ON.

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 (#62)
Revision: March 20122013 Infiniti JX
3.Check the harness for open or short between AWD control unit harness connector No.9 terminal and 10A
fuse (#62).
Is the inspection result normal?
YES- Perform the trouble diagnosis for power supply circuit. Refer to "Wiring Diagram BATTERY POWER SUPPLY -" Battery Power Supply.
NO- Repair or replace error-detected parts.

3. CHECK AWD SOLENOID 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 harness connector.





Is the inspection result normal?
YES- GO TO 7.
NO- GO TO 5.

5. CHECK AWD SOLENOID CIRCUIT (2)

1.Remove 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. Refer to "Component Inspection" .
Is the inspection result normal?
YES- GO TO 7.
NO- AWD solenoid is malfunctioning. Replace electric controlled coupling. Refer to "Removal and Installation" Electric Controlled Coupling.
Revision: March 20122013 Infiniti JX

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. Refer to "Removal and Installation" 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 harness connector terminals.





Is the inspection result normal?
YES- INSPECTION END
NO- AWD solenoid is malfunctioning. Replace electric controlled coupling. Refer to "Removal and Installation" Electric Controlled Coupling.
Revision: March 20122013 Infiniti JX