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Line Pressure Test: Inspection

WARNING: This page is about a different variant/trim than selected.
WARNING: During the line pressure test, confirm safety in the vicinity and make sure no person is around the vehicle.
CAUTION: Vehicle components are extremely hot immediately after driving. Be wary of receiving burns from heated parts.
  1. Check the engine oil level. Ref. to LUBRICATION (H4DO (EXCEPT FOR HEV))>ENGINE OIL>INSPECTION .
  2. Check the engine coolant level. Ref. to COOLING (H4DO (EXCEPT FOR HEV))>ENGINE COOLANT>INSPECTION .
  3. Remove the test plug (line pressure), and install ST1, ST2 and ST3.
    CAUTION: Because the ATF will flow out, install ST1, ST2 and ST3 quickly.
    NOTE:
    • Prepare the container for draining of engine oil.
    • Before removing the test plug (line pressure), connect install ST1, ST2 and ST3.
    • Use the ST3 with genuine O-ring (part No. 806911080) attached.

    Preparation tool: 

    ST1: OIL PRESSURE GAUGE ASSY (498575400)

    ST2: OIL PRESSURE ADAPTER SET (498897700)

    ST3: PRESSURE GAUGE ADAPTER (18681AA010)

    G13603961Courtesy of SUBARU OF AMERICA, INC.
  4. Set the gauge so that it can be seen from the driver's seat.
  5. Turn off all systems causing an electrical load, such as headlights, A/C, seat heater and rear defogger.
  6. Apply the parking brake.
  7. Turn to READY ON.
  8. Turn OFF the pre-collision brake function.
  9. Check the ATF level. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TH2A)>AUTOMATIC TRANSMISSION FLUID>INSPECTION .
  10. Place wheel chocks at the front and rear of all wheels.
  11. Record the line pressure with the engine idling.
    CAUTION: Perform the line pressure inspection within the [ATF Temp.] range of 35 - 45°C (95 - 113°F).

    Specification: 

    0.04 - 0.09 MPa (0.41 - 0.92 kgf/cm2 , 5.80 - 13.05 psi)

  12. Remove the ST (oil pressure gauge assembly, oil pressure adapter set, and pressure gauge adapter), and then install the test plug (line pressure) using a new O-ring.
    CAUTION: Because the ATF will flow out, install the test plug (line pressure) quickly.
    NOTE: Apply ATF to the O-ring.

    Tightening torque: 

    22 N.m (2.2 kgf-m, 16.2 ft-lb)

  13. Check the ATF level. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TH2A)>AUTOMATIC TRANSMISSION FLUID>INSPECTION .
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