For 1990-2009 cars

Causes | Action
--- | ---
The Transmission Fluid Pressure is too low. | Preform the Line Pressure Check .
The Torque Converter is defective. | Replace the Torque Converter.
Loss of fluid in the circuit between the Accumulator and the Brake Band |

1. Search for the leaking part.
2. Replace the leaking part.

The Brake band is incorrectly adjusted. | Adjust the Brake Band.
The Free Wheel (Planetary Set or 4th Gear Unit) is defective. | Replace the Free Wheel (Planetary Set or 4th Gear Unit).
There is fluid loss in the Converter Clutch Fluid Circuit. |

1. Search for the leaking part.
2. Replace the leaking part.