A dog clutch includes: a first rotational member; a second rotational member; a clutch member; an electromagnetic coil; and a position detecting portion. A control method for the dog clutch, includes: supplying an exciting current to the electromagnetic coil when the clutch member is moved from the non-connecting position toward the connecting position; and promptly reducing the exciting current when the position detecting portion detects that the clutch member has moved to the connecting position.

When a clutch relay connects between a control device and a vehicle electric power source in response to outputting of a clutch OFF signal from an electronic control device to the clutch relay, a timer circuit starts a control operation for energizing coil portions. When a predetermined time period elapses, the timer circuit terminates energization of the coil portions. When the clutch relay connects between the control device and the vehicle electric power source in response to outputting of a clutch ON signal from the electronic control device to the relay, the timer circuit starts a control operation for energizing the coil portions. When a predetermined time period elapses, the timer circuit terminates energization of the coil portions.

A dog clutch includes: a first rotational member; a second rotational member; a clutch member; an electromagnetic coil; and a position detecting portion. A control method for the dog clutch, includes: supplying an exciting current to the electromagnetic coil when the clutch member is moved from the non-connecting position toward the connecting position; and promptly reducing the exciting current when the position detecting portion detects that the clutch member has moved to the connecting position.

A method of controlling an actuator for a drivetrain disconnect assembly includes actuating a solenoid to achieve multiple phases of movement, where the movement may be controlled differently in the different phases. The method includes actuating a solenoid of an actuator to drive a first clutch member along an axis and relative to a second clutch member between a first position, a second position, a third position and a fourth position. Movement of the first clutch member between the second position and the third position is at a faster rate than is the movement of the first clutch member: a) between the first position and the second position; and b) between the third position and the fourth position.