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Transfer Clutch Pressure Test: Inspection

CAUTION: Vehicle components are extremely hot immediately after driving and performing the transfer clutch pressure test. Be wary of receiving burns from heated parts.
  1. Lift up the vehicle.
  2. Remove the plug.
    G09481927Courtesy of SUBARU OF AMERICA, INC.
  3. Set the ST1, ST2, ST3 and ST4 to the transmission.
    CAUTION: Be careful when setting tools so that the ST1 and ST2 do not touch the exhaust pipes.
    NOTE:
    • Use ST1 with genuine union screw (Part No. 801914010) and gasket (Part No. 803914060) attached.
    • Use the ST3 with genuine O-ring (part No. 806911080) attached.

    Preparation tool: 

    ST1: ADAPTER HOSE B (34099AC020)

    ST2: ADAPTER HOSE A (34099AC010)

    ST3: PRESSURE GAUGE ADAPTER (18681AA000)

    ST4: OIL PRESSURE GAUGE ASSY (498575400)

    G13199976Courtesy of SUBARU OF AMERICA, INC.
    G13199977Courtesy of SUBARU OF AMERICA, INC.
  4. Lower the vehicle.
  5. Connect the Subaru Select Monitor to the data link connector and read the current data.
  6. Check the transfer clutch pressure as in secondary pressure test. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>SECONDARY PRESSURE TEST .
    NOTE:
    • Turn OFF the X mode switch and perform inspection.
    • If oil pressure is not produced or it does not change, the control valve body may be malfunctioning.
    Range position TRF current (mA) Accelerator pedal opening angle (%) Transfer clutch pressure kPa (kgf/cm2 , psi)
    D 950 - 1000 Fully opened (100) 1, 000 - 1, 200 (10.2 - 12.2, 145 - 174)
    N or P 600 Adjust ON Duty ratio to 60%. 400 - 700 (4.1 - 7.1, 58 - 102)
    0 Fully closed (0) -
    0 Fully closed (0) 0
  7. Lift up the vehicle.
  8. Remove the ST.
  9. With a new O-ring, install the plug using ST1 and ST2.
    CAUTION:
    • Before installing O-rings, apply sufficient amount of CVTF to avoid damage and deformation.
    • Use SUBARU genuine CVTF.
    • Be careful not to incorrectly install or fail to install O-rings and other such parts.
    NOTE: Tighten the plug while directly aligning ST2 and torque wrench.

    Preparation tool: 

    ST1: SOCKET (18270AA040)

    ST2: SPECIAL TOOL CONDENSER (73099SG000)

    Tightening torque: 

    Calculation formula

    T = 25 N.m (2.5 kgf-m, 18.4 ft-lb) x L/(100 mm (3.94 in) + L)

    T: Tightening torque

    L: Effective length of torque wrench

    NOTE: If the effective length of the torque wrench used is unknown, consult the manufacturer of the torque wrench.
    G13199978Courtesy of SUBARU OF AMERICA, INC.
    G10268072Courtesy of SUBARU OF AMERICA, INC.
  10. Lower the vehicle.
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