AUTOMATIC TRANSAXLE SYSTEM (for Sedan) > HYDRAULIC TEST



PERFORM HYDRAULIC TEST


    G024063E03

  1. Measure the line pressure.

    NOTICE:
    1. Perform the test at the normal operating ATF (Automatic Transmission Fluid) temperature 50° to 80°C (122° to 176°F).
    2. The line pressure test must always be carried out by pairs of technicians. One technician must observe the condition of the wheels and wheel stoppers outside the vehicle, while the other is performing the test.
    3. Prevent the SST hose from interfering with the exhaust pipe.
    4. This test must be conducted after checking and adjusting the engine.
    5. Perform this test with the air conditioning OFF.
    6. Do not continue the stall test for more than 5 seconds.

    1. Warm up the ATF.

    2. Lift the vehicle up.

    3. Remove the engine under cover.

    4. Remove the test plug on the transmission case center right side and connect SST.

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

    5. Connect the Techstream to the DLC3.

    6. Turn the ignition switch to ON.

    7. Turn the Techstream on.

    8. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data.

    9. Fully apply the parking brake and chock all 4 wheels.

    10. Start the engine and check the idling speed.

    11. Keep your left foot pressing firmly on the brake pedal and shift into the D position.

    12. Measure the line pressure when the engine is idling.

    13. Depress the accelerator pedal all the way down. Quickly read the highest line pressure when engine speed reaches stall speed.

    14. Perform the test in the R position in the same manner.

      Standard line pressure:

      Condition
      		D position kPa (kgf / cm2, psi)
      		R position kPa (kgf / cm2, psi)
      Idling
      		372 to 412 kPa
      (3.8 to 4.2 kgf/cm2, 54 to 60 psi)
      		553 to 623 kPa
      (5.6 to 6.4 kgf/cm2, 80 to 90 psi)
      Stall
      		1126 to 1226 kPa
      (11.5 to 12.5 kgf/cm2, 163 to 178 psi)
      		1664 to 1864 kPa
      (17.0 to 19.0 kgf/cm2, 241 to 270 psi)

      Evaluation: 
      Problem
      		Possible Cause
      Measured values are higher than specified values in all positions
      1. Shift solenoid valve SLT defective
      2. Regulator valve defective
      Measured values are lower than specified values in all positions
      1. Shift solenoid valve SLT defective
      2. Regulator valve defective
      3. Oil pump defective
      Pressure is low in D position only
      1. D position circuit fluid leak
      2. Forward clutch defective
      Pressure is low in R position only
      1. R position circuit fluid leak
      2. Reverse clutch defective
      3. 1st and reverse brake defective