Hydraulic Test

WARNING: This page is about a different car, the 2005 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

PERFORM HYDRAULIC TEST

Measure the line pressure.

NOTE:

Perform the test at the normal operating ATF (Automatic Transmission Fluid) 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 stoppers outside the vehicle while the other is performing the test.
Be careful to prevent SST hose from interfering with the exhaust pipe.
This check must be conducted after checking and adjusting engine.
Perform under condition that A/C is OFF.
When conducting stall test, do not continue more than 10 seconds.
1. Warm up the ATF (Automatic Transmission Fluid).
2. Lift the vehicle up.
3. Remove the test plug on the transmission case center right side and connect SST.
  SST 09992-00095 (09992-00231, 09992-00271)
4. Fully apply the parking brake and chock the 4 wheels.
5. Start the engine and check idling speed.
6. Keep your left foot pressing 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 engine speed reaches stall speed.
9. In the same manner, do the test in the R position.
  
  Fig 1: Measuring Line Pressure
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Specified line pressure:

SPECIFICATION LINE PRESSURE

Condition	D position kPa (kgf / cm² , psi)	R position kPa (kgf / cm² , psi)
Idling	362 to 420 kPa (3.7 to 4.2 kgf/cm² , 53 to 59 psi)	500 to 580 kPa (5.1 to 5.9 kgf/cm² , 73 to 84 psi)
Stall test	1,360 to 1,460 kPa (13.8 to 14.9 kgf/cm² , 196 to 212 psi)	1,295 to 1,415 kPa (13.2 to 14.4 kgf/cm² , 188 to 205 psi)

Evaluation:

Fig 2: Problem And Possible Causes Chart