obd简介及原理分析

在汽车故障诊断领域，针对诊断设备和汽车ECU之间的数据交换，各大汽车公司几乎都制订了相关的标准和协议。-obd Introduction and principles of analysis in the automotive fault diagnosis, diagnostic equipment and vehicle for data exchange between ECU, almost all the major car companies develop the relevant standards and protocols.