Gearbox pressure test

GEARBOX PRESSURE TEST

WARNING: During pressure testing, keep clear of front wheels as they may be rotating. Ensure vehicle is properly supported during the tests.

CAUTION: Connect the tool; be sure not to allow dust and other foreign particles to enter the inspection hole.

CAUTION: Before testing, be sure the transmission fluid is filled to the proper level.

1. Raise the car.

WARNING: Support on axle stands.

2. Warm up the engine (the radiator cooling fan comes on), then stop the engine and connect a tachometer.
3. Connect tools 18G 1554 and 18G 1554 – 2 to each inspection hole.
4. Start the engine, and measure the respective pressure as follows:
   Line Pressure
   Clutch Pressure
   Throttle B Pressure
   Clutch Low/High Pressure
5. Install a new washer and the sealing bolt in the inspection hole, and tighten to 18 Nm.

Note: Fit new aluminium washers.

Line Pressure Measurement

A      Lock – up control solenoid valve assembly

B      Line pressure inspection hole

1. Apply the handbrake and chock both rear wheels securely.
2. Run the engine at 2,000 rev/min.
3. Select N or P.

Note: Higher pressures may be indicated if measurements are made in selector positions other than N or P.

4. Measure line pressure.
   Line pressure = 7.5 to 8.5 kg/cm²
5. If line pressure is low or non – existent, suspect torque converter, pump, pressure regulator or torque converter check valve fault.