这是一个基于OBD2的随车诊断协议ISO9141-1,进行汽车通信必须要支持此协议才能正常通信-This is one of the escorts for OBD2 diagnostic protocol ISO9141-1. vehicle communications must support this agreement can be normal communication

是基于OBD2的ISO9141-3协议是从事汽车通信编程的必需东东，主要定义了汽车通信测试的协议-OBD2 is based on the ISO9141-3 agreement is involved in automobile communication programming Eastern necessary, definition of a major communication vehicle testing agreement

汽车通讯协议Iso9141用户指南.有助于理解ISO9141到RS232的通讯编程.

ISO 9141 INTERFACE pcb