Transfer Clutch Pressure Test: Inspection

Check the transfer clutch pressure in accordance with the following procedures, in the same manner as with line pressure. <Ref. to LINE PRESSURE TEST . >

ST 498897700 OIL PRESSURE ADAPTER SET

ST 498575400 OIL PRESSURE GAUGE ASSY

NOTE: Before setting in FWD mode test, install the spare fuse on FWD mode switch. (Only models with MPT)

Fig 1: Identifying Test Plug

Courtesy of SUBARU OF AMERICA, INC.

NOTE:

If no oil pressure is produced or if it does not change in AWD mode, the transfer duty solenoid or the control valve body may be malfunctioning.
If oil pressure is produced in FWD mode, there is the same problem as the AWD mode. (Only models with MPT)

DIAGNOSIS PROCEDURE

Range position	ON Duty ratio (%)	Throttle position (%)	Standard transfer clutch pressure kPa (kg/cm² , psi)
Range position	ON Duty ratio (%)	Throttle position (%)	AWD mode	FWD mode
2	95	Fully opened (100)	1,000 - 1,200 (10.2 - 12.2, 145 - 174)	-
	60	Adjust ON Duty ratio to 60%.	500 - 700 (5.1 -7.1, 73 - 102)	-
	5	Fully closed (0)	-	0 (0, 0)
N or P	5	Fully closed (0)	0	-