Abstract: An electric power steering control device includes a motor controller for controlling an electric motor providing the assisting steering torque; and a clutch controller for controlling an electromagnetic clutch selectively connecting the assisting steering torque of the motor to the steering system. The degree of engagement (connection) of the clutch corresponds to the clutch current command level I.sub.C. When the vehicle speed is above a predetermined speed V.sub.0 (i.e., during high speed driving), the clutch current I.sub.C is set at a predetermined half current level I.sub.CR. During low vehicle speeds below V.sub.0, the clutch current I.sub.C is gradually decreased to the half current level I.sub.CR as the vehicle speed increases to V.sub.0. When the steering torque T is above a first predetermined level T1 indicative of an abnormality during high speed operation, the clutch current I.sub.C is set at a minimal level I.sub.CO. The steering torque T is returned to the half current level I.sub.