Hydraulic Pressure Tests

HYDRAULIC PRESSURE TESTS

CAUTION: The transmission fluid temperature should be between 70-80°C (158-176°F) during the test.

1. Check the transmission fluid level and temperature. Check engine coolant temperature.
- Transmission fluid level: "HOT" mark on the dipstick
- Transmission 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.

<UNDERSIDE VIEW>:

<5A/T>:

3. Connect the special tools (3.0 MPa (427 psi) oil pressure gauge [MD998330] and adapters [MD998332, MD998900, MB992018 [5A/T]]) to each pressure discharge port.

NOTE:
- 2ND: Second brake pressure port
- UD: Underdrive clutch pressure port
- LR: Low-reverse brake pressure port
- DR: Torque converter release pressure port
- DA: Torque converter apply pressure port
- RV: Reverse clutch pressure port
- OD: Overdrive clutch pressure port
- DIR: Direct clutch pressure port [5A/T]
- RED: Reduction brake pressure port [5A/T]

4. Restart the engine.
5. Check that there are no leaks around the special tool port adapters.
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.

<4A/T>:

<5A/T>:

STANDARD HYDRAULIC PRESSURE TABLE

[4A/T]


[5A/T]

HYDRAULIC PRESSURE TEST DIAGNOSIS TABLE

HYDRAULIC PRESSURE TESTS (PART 1):

HYDRAULIC PRESSURE TESTS (PART 2):

HYDRAULIC PRESSURE TESTS (PART 3):