1、19服务——读取诊断故障码信息(ReadDTCInformation) 1、01子服务 通过状态掩码去查找与其相匹配的故障个数。 通过该服务诊断仪能够请求ECU中DTC状态与DTC状态掩码相匹配的故障码个数。如果某一个故障码的实际状态位为1，并且DTC状态掩码中的相应位也为1，那么就 ...

For all its '81 vehicles, GM introduced a computer-controlled engine-management system named Computer Command Control. It became known as CCC or C-3. The engine controller—first called an engine ...