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).
现代汽车车载自诊断（OBD）系统存在一个OBD不能监测出故障（误诊）的区域，该区域定义为自诊断系统的“盲区”。
The onboard diagnosis systems of modern motor vehicles have areas in which they cannot diagnose system faults. The area is defined as'blind area'of the diagnosis system.
现代汽车车载自诊断（OBD）系统存在一个OBD不能监测出故障（误诊）的区域，该区域定义为自诊断系统的“盲区”。
The onboard diagnosis systems of modern motor vehicles have areas in which they cannot diagnose system faults. The area is defined as'blind area'of the diagnosis system.
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