Warning: No one should stand in front or behind the vehicle while testing.
Execution order
1. Before testing, check the levels of all operating fluids and, if necessary, top them up to normal. The transmission fluid temperature should be between 80–90°C, and the coolant temperature should be between 80–90°C.
2. Place chocks under the front and rear wheels.
3. Connect a tachometer to the engine.
4. Apply the parking brake and press the brake pedal.
5. Start the engine.
6. Move the selector lever to the "D" position. Press the brake pedal fully with your left foot and gently press the accelerator pedal with your right foot. When the engine speed no longer increases, read the tachometer and release the accelerator pedal. To avoid damage to the transmission, perform the test for 5 seconds. If more than one test is necessary with the engine running, move the selector lever to the N position and let the engine idle for 2 minutes. Running the engine at idle speed cools the transmission fluid and prevents its properties from deteriorating.
Engine crankshaft speed during testing of automatic transmission and engine operation together on a stationary vehicle (stall test): 2300–2700 min⁻¹.
7. Carry out the test in the same manner with the selector lever in position "R".
If the engine speed is higher than the specification in position D, the transmission fluid pressure is insufficient due to a leak in the rear clutch or overrunning clutch.
If the engine speed is higher than the specification in the R position, the transmission fluid pressure is insufficient due to a leak in the front clutch or the front low gear and reverse brake band.
If the engine speed is below the specification in position D, the transmission fluid pressure is insufficient due to wear of the oil pump or malfunction of the torque converter.