【摘要】 车载自诊断方法是现代汽车电控系统故障诊断的一种重要方法,它能连续不断地检测有关系统的故障。以第二代车载自诊断(OBDII)标准为基础,分析该系统的主要应用技术,如:相关的网络通讯协议、与车下诊断设备通讯的相关标准等等,并对车载自诊断方法的发展趋势进行了深入分析。更多还原

【Abstract】 On-board diagnosis is an important method for electronic-controlled system fault diagnosis of modern automobiles and it can test emission-related system faults continuously.Based on OBDII standard,some key application technologies used for the system,such as network communication protocol,off-board communication standards,have been analyzed and the analysis of the development trend of the on-board diagnosis system is made.更多还原