Kia Sportage: Coupling Assembly / Oil hydraulic Motor(Actuator) Description and operation
The 4WD ECM controls the Pump Motor Pump (Actuator) to generating an oil pressure.
The pressure engages a multiple disk clutch to transfer torque to the rear wheels.
The torque to the rear wheels varies according to the pressure on the clutch.

Inspection
All units are filled up with coupling fluid (ultra-low viscosity ATF)
prior to shipping. Inspect ...
Other information:
Removal
1.
Disconnect the PCV hose (A).
2.
Remove the PCV valve (B).
Inspection
1.
Insert a thin stick (A) into the PCV valve (B) from the threaded side
to check that the plunger ...
Replacement
1.
Remove the rear door trim.
(Refer to Rear Door - "Rear Door Trim")
2.
Remove the rear door belt outside weatherstrip (A) after loosening the
mounting screw.
3.
...