那個傳感器，Hood關上，觸點開路。
換言之，隻要觸點開路，告警燈就不會亮。
The hood sensor is a simple electrical switch. When the hood is closed, the switch is open. When the hood is open, the switch is closed and a warning is illuminated on the dash.
https://www.yourmechanic.com/services/hood-sensor-switch-replacement
