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HYDRAULIC PRESSURE TESTS




The A/T fluid temperature should be between 70 - 80 °C (158 - 176°F) during the test.
1.Check the A/T fluid level and temperature. Check engine coolant temperature.
A/T fluid level: "HOT" mark on the dipstick
A/T fluid temperature: 70 - 80°C (158 - 176°F)
Engine coolant temperature: 80 - 100°C (176 - 212°F)
2.Raise the vehicle so that the wheels are free to turn.

3.Connect the special tools [3.0 MPa (427 psi) oil pressure gauge (MD998330) and adapters (MD998332, MD998900)] to each pressure discharge port.
NOTE:
UC: Underdrive clutch pressure port

RC: Reverse clutch pressure port

OC: Overdrive clutch pressure port

LB: Low-reverse brake pressure port

2B: Second brake pressure port

TA: Torque converter apply pressure port

TR: Torque converter release pressure port

4.Restart the engine.
5.Check that there are no leaks around the special tool port adaptors.
6.Measure the hydraulic pressure at each port under the conditions given in the standard hydraulic pressure table, and check that the measured values are within the standard value ranges.
7.If the pressure is not within the standard value, stop the engine and refer to the hydraulic pressure test diagnosis table.
8.Remove the O-ring from the port plug and replace it.
9.Remove the special tool, and install the plugs to the hydraulic pressure ports.
10.Start the engine and check that there are no leaks around the plugs.