| 摘要 |
PURPOSE:To check operation in wiring and mechanism of an impact detection means by turning ON a second switch with the operation of the impact detection means in inspection to drive a display means. CONSTITUTION:When a starter switch 2 is turned ON for the start of an engine, a relay 3 operates to change a first switch 4 over to a contact (a). At the same time, a power source voltage is supplied to a coil 9 through the starter switch 2 to displace a mobile member 12 against an energizing force of a spring 11 and the switch 8 is opened with one end thereof. Under such a condition, a power source voltage is fed to a display means 5 through an ignition switch 1, a second switch 8 and the contact (a) of the first switch 4 to activate a display means 5. This enables the checking to see that the second switch 8 is closed correctly by impact detection means 11 and 12 and when the display means 5 is not operated, this allows the detection of possible disturbance such as disconnection in a wiring or disabling of the mobile member 12. |
