Hydraulic Pressure Test
HYDRAULIC PRESSURE TESTS1. 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)
CAUTION: The fluid temperature should be within 70 - 80°C (1158 - 176°F) during the test.
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: 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 ("DA "pressure is approximately the same as the "DR" pressure, so measurements are not needed)
RV: Reverse clutch pressure port
OD: Overdrive clutch pressure port
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 not within the standard value, stop the engine and refer to the Hydraulic pressure test diagnosis table.
8. Recover 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. On completion, start the engine and check that there are no leaks around the plugs.
STANDARD HYDRAULIC PRESSURE TEST
HYDRAULIC PRESSURE TEST DIAGNOSIS TABLE:
OIL SEAL LAYOUT:
NOTE: If the torque converter pressure is tested, the range speed should be 1,500 r/min or less.