Patent ID: 8838341

Claim:
An electric drive steering locking apparatus comprising: a motor that actuates a locking member engaging with and disengaging from a steering shaft of a vehicle; a motor driving control unit that switches polarities of a driving current supplied from a main power supply to the motor, disconnects the driving current, and allows the motor to perform locking actuation or unlocking actuation of the locking member; a microcomputer that selectively outputs an unlocking actuation signal causing the locking member to perform the unlocking actuation and a locking actuation signal causing the locking member to perform the locking actuation to the motor driving control unit; a first switching unit that electrically connects and disconnects one side of a power supply route from the motor driving control unit to the motor; a checking power supply that is connected between the first switching unit and the motor to apply a predetermined voltage to the motor; a switch unit that electrically connects and disconnects a check current supplied from the checking power supply to the motor; a first diagnostic unit that is connected on a route from the checking power supply to the motor to output a voltage corresponding to an internal resistance of the motor; and a motor breakdown determination unit that determines a breakdown of the motor by the voltage input from the first diagnostic unit.