Method for controlling controlled lockup clutch of motor vehicle, involves detecting damage of connectivity of torque convertor lockup clutch or fall-through of primary or drive speed

摘要

The method involves detecting a damage of the connectivity of the torque converter lockup clutch or a fall-through of the primary or drive speed. The connectivity of the lock-up clutch is restored by a positive pressure pulse in the servo pressure of the lockup clutch when a damage of the connectivity of the torque converter lockup clutch or a fall-through of the primary or drive speed is detected.