诊断通信系统 AUTOSAR 诊断系统下位机与外界的通信由 DCM 负责。DCM 模块的主要功能在于保证诊断的数 据流管理诊断状态, 尤其是诊断会话和安全状态.(The communication between the lower computer and the outside of the diagnostic communication system AUTOSAR diagnosis system is responsible for the DCM. The main functio