An over-running clutch (10) includes an outer race (12) and an inner race (20) defining a gap (24) therebetween. A plurality of rolling elements (26) are positioned between the inner and outer races. A retainer (28) interconnects the rolling elements. A first biasing element (34) biases the retainer to hold the rolling elements such that the inner and outer races are free to rotate relative to one another. An actuator (42) selectively forces the rolling elements to a position where the rolling elements engage and wedge between the inner and outer races, thereby locking the clutch. A sensor (52) is adapted to detect the engagement of the clutch and to send a corresponding signal.