Procedures

Differential Clutch Oil Inspection

1. Warning
The hydraulic pressure in the differential clutch is very high. To prevent personal injury, wait for at least 10 minutes before removing any parts from the differential clutch.

Note
The following steps must be followed to ensure the proper fluid level for the differential clutch fluid.

Run the engine at idling speed for 5 minutes to distribute the fluid.

2. In park, cycle throttle to wide open throttle briefly 5 times to cycle solenoids to purge air.
3. Turn OFF the engine.

4. Note
Ensure that the vehicle is as level as possible.

Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.

Note
Ensure that the vehicle is as level as possible.

5. Warning
It is very important to observe maximum cleanliness when working on the differential clutch. Dirt particles can seriously damage the function and service life of the differential clutch.

Note
- Both the fluid level and the clutch motor current parameter requirements must be met to ensure the differential clutch is filled to specifications.
- The differential clutch fluid should be level with the bottom threads of the fluid level inspection plug hole.

Remove the fluid level inspection plug (1) and check the differential clutch fluid level. If the fluid level is low, add 50 ml (1.7 ounces) of fluid.





6. Add the proper differential clutch fluid, if needed.
7. Refer to Fastener Caution.

Install the fluid level inspection plug (1) and tighten to 14 Nm (10 lb ft).

8. Install the scan tool.

9. Note
When the clutch pump motor cycles from OFF to ON the current will also cycle from 0 mA to 2500-3500 mA. DTC C0407 64 is set when the pump current is CONSTANTLY BELOW 2500 mA.

With engine running, observe the scan tool Rear Differential Clutch Pump Motor Current parameter. The parameter display should be between 2500-3500 mA when the pump is on. If the parameter is constantly below 2500 mA, recheck the fluid level.

10. Repeat steps 1-6 to ensure that the differential clutch fluid level is correct.
11. Remove the supports and lower the vehicle.