UDS诊断服务ppt课件

UDS诊断服务,什么是UDS？,UDS-Unifieddiagnosticservices(统一诊断服务)俗称14229.形象的说：就是使用一套仪器，对当前汽车出现的问题进行分析。而这套仪器与汽车交谈所使用的语言就是UDS（不是唯一的方法）。,2,2,基本时间参数,3,3,寻址方式,4,根据物理地址的不同进行访问-只能访问单个ECU节点,根据功能的不同进行访问-能访问多个ECU节点,物理寻址,功能寻址,4,诊断服务,5,5,否定响应（1）,6,6,否定响应（2）,7,7,DiagnosticSessionControl,8,服务请求格式,8,DiagnosticSessionControl,9,正响应格式,负响应格式,9,ECUReset,10,服务请求格式,10,ECUReset,11,正响应格式,负响应格式,11,ClearDiagnosticInformation,12,服务请求格式,12,ClearDiagnosticInformation,13,正响应格式,负响应格式,13,ReadDTCInformation,14,服务请求格式,ReportNumberofDTCbyStatusMask,14,ReadDTCInformation,15,正响应格式,负响应格式,ReportNumberofDTCbyStatusMask,15,ReadDTCInformation,16,服务请求格式,ReportDTCbyStatusMask,16,ReadDTCInformation,17,正响应格式,ReportDTCbyStatusMask,17,ReadDTCInformation,18,负响应格式,ReportDTCbyStatusMask,18,ReadDTCInformation,19,服务请求格式,ReportDTCSnapshotIdentification,19,ReadDTCInformation,20,正响应格式,ReportDTCSnapshotIdentification,20,ReadDTCInformation,21,负响应格式,ReportDTCSnapshotIdentification,21,ReadDTCInformation,22,服务请求格式,ReportDTCExtendedDataRecordbyDTCNumber,22,ReadDTCInformation,23,正响应格式,ReportDTCSnapshotIdentification,23,ReadDTCInformation,24,负响应格式,ReportDTCSnapshotIdentification,24,ReadDTCInformation,25,服务请求格式,ReportSupportedDTC,25,ReadDTCInformation,26,正响应格式,ReportSupportedDTC,26,ReadDTCInformation,27,负响应格式,ReportSupportedDTC,27,ReadDatabyIdentifier,28,服务请求格式,28,ReadDatabyIdentifier,29,正响应格式,负响应格式,29,SecurityAccess,30,服务请求格式,Step1:Requestseed,30,SecurityAccess,31,正响应格式,负响应格式,Step1:Requestseed,31,SecurityAccess,32,服务请求格式,Step2:Seedsecuritykey,32,SecurityAccess,33,正响应格式,负响应格式,Step2:Seedsecuritykey,33,CommunicationControl,34,服务请求格式,34,CommunicationControl,35,正响应格式,负响应格式,35,WriteDatabyIdentifier,36,服务请求格式,36,WriteDatabyIdentifier,37,正响应格式,负响应格式,37,RoutineControl,38,服务请求格式,38,RoutineControl,39,正响应格式,39,RoutineControl,40,负响应格式,40,TesterPresent,41,服务请求格式,41,TesterPrese