Abstract: An electric drive steering locking apparatus according to an embodiment of the invention includes an electric motor, a motor driving control unit that allows the motor to perform locking actuation or unlocking actuation, a lower-level microcomputer that outputs an unlocking actuation signal and a locking actuation signal to the motor driving control unit, a first switching unit that electrically connects and disconnects a power supply route from the motor driving control unit to the motor, a checking power supply that applies a predetermined voltage to the electric motor; a switch unit that electrically connects and disconnects the checking power supply and the motor; a first diagnostic unit that outputs a voltage corresponding to an internal resistance of the electric motor; and a motor breakdown determination unit (lower-level microcomputer) that determines a breakdown of the electric motor by the voltage input from the first diagnostic unit.

Abstract: An electric drive steering locking apparatus according to an embodiment of the invention includes an electric motor, a motor driving control unit that allows the motor to perform locking actuation or unlocking actuation, a lower-level microcomputer that outputs an unlocking actuation signal and a locking actuation signal to the motor driving control unit, a first switching unit that electrically connects and disconnects a power supply route from the motor driving control unit to the motor, a checking power supply that applies a predetermined voltage to the electric motor; a switch unit that electrically connects and disconnects the checking power supply and the motor; a first diagnostic unit that outputs a voltage corresponding to an internal resistance of the electric motor; and a motor breakdown determination unit (lower-level microcomputer) that determines a breakdown of the electric motor by the voltage input from the first diagnostic unit.

Abstract: The invention provides a motor-driven steering lock apparatus which can improve a reliability of locking and unlocking operations, with a simple circuit structure. A power supply line from a battery and a driving means are connected by a switching means only at a time when a feed signal from a host first control means to a drive control means (CPU), a power supply-enabling signal from the host first control means and a power supply-enabling signal from a host second control means are input to the switching means.

Abstract: The invention provides a motor-driven steering lock apparatus which can improve a reliability of locking and unlocking operations, with a simple circuit structure. A power supply line from a battery and a driving means are connected by a switching means only at a time when a feed signal from a host first control means to a drive control means (CPU), a power supply-enabling signal from the host first control means and a power supply-enabling signal from a host second control means are input to the switching means.

Abstract: A keyless entry system for a vehicle is provided, on the vehicle, with detection distance setting circuit for changing a detection distance within which an electronic key can receive an activation signal. By carrying out predetermined operations, the keyless entry systems enters an adjustment mode wherein the detection distance can be changed by the detection distance setting circuit. With this configuration, the detection distance can be adjusted while the keyless entry system is mounted on the vehicle, whereby it is possible to attain a system causing no malfunction and ensuring high levels of security.

Abstract: A keyless entry system for a vehicle is provided, on the vehicle, with detection distance setting means for changing a detection distance within which an electronic key can receive an activation signal. By carrying out predetermined operations, the keyless entry system enters an adjustment mode wherein the detection distance can be changed by the detection distance setting means. With this configuration, the detection distance can be adjusted while the keyless entry system is mounted on the vehicle, whereby it is possible to attain a system causing no malfunction and ensuring high levels of security.