探讨目前国际上广泛使用的诊断通信协议KWP2000及K 线通信原理，基于其完成了共 轨系统故障诊断通信子模块的设计，并进行硬件和软件的开发-Discussion is currently widely used in international diagnostic communication protocols KWP2000 and K lines of communication theory, based on their completion of common-rail syst