Patent ID: 6863336

Claim:
A powered sliding device for a vehicle sliding door, comprising: a vehicle sliding door slidably attached to a vehicle body; a wire drum connected to the sliding door through a wire cable and arranged to be rotated by power of a motor; a clutch mechanism for transmitting the power of the motor to the wire drum; an electromagnetic brake arranged to apply braking to the wire drum using a solenoid as driving source; a controller for controlling the motor and the electromagnetic brake; a battery; and a switch transistor arranged to be turned on by a Hi signal from an output port of the controller and to be turned off by a Lo signal from the output port, said switch transistor sending electricity to the solenoid when being turned on; wherein an interval between the solenoid and the switch transistor is connected through a line where the voltage level is raised when the switch transistor is turned off and is lowered when the switch transistor is turned on; wherein the way of the line is connected through a failure detecting circuit to an input port of the controller; wherein it is arranged that normality and abnormality of each of the solenoid and the switch transistor can separately be detected by the combination of a signal from the output port and a voltage level inputted to the input port.