•  Line pressure is adjusted to provide clutches with the required pressure and maintain oil pump wear at a minimum.

•  Predetermined line pressure characteristics that match engine driving force during shifting are utilized and an optimal characteristic is temporarily selected according to shift conditions in order to minimize transaxle shock.

•  Line pressure learning control is performed to minimize shift shock and other negative characteristics due to deviation of parts and deterioration over time. Shift shock may increase after the negative battery cable is removed since this clears the learning data but the shock will gradually be reduced as the vehicle is driven.