Transfer Clutch Pressure Test: Inspection

Lift up the vehicle.
Remove the test plug.

Fig 1: Locating Test Plug
Courtesy of SUBARU OF AMERICA, INC.
Set the ST1, ST2 and ST3 to transmission.
ST1 498575400 OIL PRESSURE GAUGE ASSY

ST2 498897700 OIL PRESSURE ADAPTER SET

ST3 18681AA000 PRESSURE GAUGE ADAPTER

NOTE: ST3 Used with genuine O-ring (part No. 806911080) attached to PRESSURE GAUGE ADAPTER.

Fig 2: Setting ST1, ST2 And ST3 To Transmission
Courtesy of SUBARU OF AMERICA, INC.
Lower the vehicle.
Connect the Subaru Select Monitor to the data link connector and read the current data.

Check the transfer clutch pressure as in secondary pressure (line pressure) test. Ref. to SECONDARY PRESSURE (LINE PRESSURE) TEST .

NOTE:

Use Subaru Select Monitor for switching to FWD mode. Ref. to AWD ON/OFF SWITCHING MODE .
If no oil pressure is produced, if it does not change in AWD mode or if oil pressure is produced in FWD mode, there may be a problem in the control valve body.

RANGE POSITION CHART

Range position	ON Duty ratio (%)	Accelerator opening angle (%)	Standard transfer clutch pressure kPa (kg/cm² , psi)
Range position	ON Duty ratio (%)	Accelerator opening angle (%)	AWD mode	FWD mode
Manual mode (2nd)	95 - 100	Fully opened (100)	1,000 - 1,200 (10.2 - 12.2, 145 - 174)	-
	60	Adjust ON Duty ratio to 60%.	400 - 700 (4.1 - 7.1, 58 - 102)	-
	0	Fully closed (0)	-	0 (0, 0)
N or P	0	Fully closed (0)	0	-