阐述车载自诊断系统对传感器、电控单元、执行器和多路传输系统的诊断原理；
The author describes diagnostic principles of the OBD(On Board Diagnostic)system for sensors, ECU, actuators and SWS(Smart Wiring System).
安保系统主要使用运动传感器和开关将信号传递到电控单元。
The system basically uses motion sensors and switches to feed signals to anelectronics control unit.
氧传感器在电控发动机上的应用，实现了电控单元对发动机的闭环控制。
The oxygen sensor on electrically controlled engine application, has realized the electrically controlled unit to the engine closed-loop control.
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