Toyota Corolla (E120): Hydraulic test

1. Perform hydraulic test

  1. Measure the line pressure.

Notice

:

  • Do the test at normal operation atf temperature 50 to 80 °c (122 to 176 °f).
  • The line pressure test should always be carried out in pairs. One technician should observe the conditions of wheels or wheel stopper outside the vehicle while the other is doing the test.
  • Be careful to prevent sst’s hose from interfering with the exhaust pipe.

  1. Warm up the atf.
  2.  Remove the test plug on the transaxle case front left side and connect sst.

    Sst 09992–00095 (09992–00231, 09992–00271)

  3.  fully apply the parking brake and chock the 4 wheels.
  4.  Connect an obd ii scan tool or hand–held tester to the dlc3.
  5.  Start the engine and check the idling speed.
  6.  Keep your left foot pressed firmly on the brake pedal and shift into the d position.
  7.  Measure the line pressure when the engine is idling.
  8.  Depress the accelerator pedal all the way down.

    Quickly read the highest line pressure when the engine speed reaches the stall speed.

  9. Do the test in the r position in the same way.

Specified line pressure:

Evaluation:

Evaluation:

Problem

Possible cause

If the measured values at all positions are higher
  • Line pressure control solenoid (slt) defective
  • Regulator valve defective
If the measured values at all positions are lower
  • Line pressure control solenoid (slt) defective
  • regulator valve defective
  • oil pump defective
  • o/d direct clutch defective
If pressure is low in the d position only
  • D position circuit fluid leak
  • forward clutch defective
If pressure is low in the r position only
  • R position circuit fluid leak
  • direct clutch defective
  • 1st and reverse brake defective
    Share this page:

    Other materials:

    Inspection procedure
    Hand–held tester: 1 Perform active test by hand–held tester(operation of circuit opening relay) Connect the hand–held tester to the dlc3.  turn the ignition switch on and push the hand–held tester main switch on.  select the item ”diagnosis / enhanced obd ii / active ...

    Installing child restraints
    Follow the child restraint system manufacturer's instructions. Firmly secure child restraints to the seats using the LATCH anchors or a seat belt. Attach the top tether strap when installing a child restraint. The lap/shoulder belt can be used if your child restraint system is not compatible ...

    Manual air conditioning system
    Air conditioning controls The display and button positions will differ depending on the type of the system. Fan speed control switch Temperature control switch "MAX A/C" switch "A/C" switch Outside air mode switch Recirculated air mode switch Airflow mode control switch Rear window defogge ...