Automatic Transaxle System Hydraulic Test

Transmission. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
U151F Automatic Transaxle. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

  1. PERFORM HYDRAULIC TEST

Automatic Transaxle System -- Hydraulic Test



PERFORM HYDRAULIC TEST
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.U151F Automatic Transaxle.Automatic Transaxle System.Automatic Transaxle System Hydraulic Test

  1. Measure the line pressure.

    NOTICE:
    1. Perform the test at the normal operating ATF temperature: 50 to 80°C (122 to 176°F).
    2. The line pressure test should always be performed with at least 2 people. One person should observe the condition of the wheels or wheel chocks while the other is performing the test.
    3. Be careful to prevent SST's hose from interfering with the exhaust pipe.
    4. This test must be performed after checking and adjusting the engine.
    5. Perform the test with the A/C OFF.
    6. When conducting the stall test, do not continue for more than 10 seconds.

    1. Warm up the ATF (Automatic Transmission Fluid).

    2. Lift the vehicle up.

    3. Remove the engine under cover.

    4. Connect the intelligent tester to the DLC3.

    5. Remove the test plug A on the transaxle case front left side and install SST.

      SST
      09992-00095(09992-00231,09992-00271)
      NOTICE:
      There is a difference between the installation point of the D position and R position.

    6. Start the engine.

    7. Using intelligent tester, shift to D position and hold 3rd gear by active test, and measure the line pressure in idling.

      Specified line pressure:
      Condition
      		D position kPa (kgf/cm2, psi)
      Idling
      		372 to 412 kPa
      (3.8 to 4.2 kgf/cm2, 54 to 60 psi)

    8. Turn the ignition switch off.

    9. Disconnect the connector of the transmission wire.

      HINT:
      Disconnect the connector only when performing the D position stall test.

    10. Start the engine.

    11. Firmly depress the brake pedal, shift to the D position, depress the accelerator pedal all the way down and check the line pressure while the stall test is performed.

      Specified line pressure:
      Condition
      		D position kPa (kgf/cm2, psi)
      Stall test
      		931 to 1,031 kPa
      (9.5 to 10.5 kgf/cm2, 135 to 150 psi)

    12. Turn the ignition switch off.

    13. Remove SST, and install the test plug A.

    14. Remove the test plug B, install SST and start the engine.

      SST
      09992-00095(09992-00231,09992-00271)

    15. Connect the transmission wire connector, depress the brake pedal firmly, shift to the R position and check the line pressure while the engine is idling and during the stall test.

      Specified line pressure:
      Condition
      		R position kPa (kgf/cm2, psi)
      Idling
      		672 to 742 kPa
      (6.9 to 7.6 kgf/cm2, 97 to 108 psi)
      Stall test
      		1,768 to 1,968 kPa
      (18.0 to 20.0 kgf/cm2, 256 to 285 psi)

    16. Remove SST, and install the test plug B.

    17. Clear the DTC.

      Evaluation:
      Problem
      		Possible cause
      Measured values at all positions are higher than specified
      1. Shift solenoid valve SLT defective
      2. Regulator valve defective
      Measured values at all positions are lower than specified
      1. Shift solenoid valve SLT defective
      2. Regulator valve defective
      3. Oil pump defective
      4. U/D (underdrive) direct clutch defective
      Pressure is low when shift lever is on D only
      1. D position circuit fluid leak
      2. Forward clutch defective
      Pressure is low when shift lever is on R only
      1. R position circuit fluid leak
      2. Reverse clutch defective
      3. 1st and reverse brake defective