A control system for opening or closing an opening-closing member when a foreign material is caught by the opening-closing member. The event that the opening-closing member catches the foreign material is decided on the basis of a driving state of a motor for driving the opening-closing member such as a power window. For example, the event that the event of catching the foreign material is decided when a driving acceleration or a driving velocity is less than a predetermined threshold X or Y, respectively. Each of the thresholds X and Y is set basically on the basis of the previous driving acceleration and velocity of the opening-closing member. The thresholds X and Y are corrected on the basis of a condition exerting an influence upon the driving state of the motor, for example, on the basis of a driving voltage or a resistance to a sliding movement of the opening-closing member.