道路车辆.开放式诊断数据交换(ODX).第2部分:有关排放的诊断数据

[中文适用范围]： 本部分ISO 22901旨在确保诊断数据流信息可供诊断工具应用程序制造商使用，以简化售后汽车服务行业的支持。ODX建模的诊断数据与模块化车辆通信接口（MVCI）（ISO 22900-2和ISO 22900-3）的软件要求兼容。ODX建模的诊断数据可使MVCI设备与车辆[ECU(s)]通信，并解释外部测试设备与ECU(s)之间交换的消息中包含的诊断数据。对于符合ODX的外部测试设备，无需进行软件编程即可将诊断数据转换为技术人员可读的信息以供外部测试设备显示。本部分ISO 22901包含以ODX描述的排放相关OBD数据示例。数据示例源自ISO 15031（所有部分）。示例包括：故障代码、数据参数、识别数据和通信参数。排放相关OBD ODX建模的诊断数据描述了：排放相关ECU的通信协议规范；排放相关OBD协议和数据链路层以及排放相关ECU软件的通信参数；相关的车辆接口描述（连接器和引脚排列）；ECU网络的诊断功能描述。本部分ISO 22901基于根据ISO 15765-4 DoCAN协议派生和格式化的排放相关诊断数据。定义和XML表示示例适用于ISO 15031-5中引用的所有其他协议。 [外文原描述]： ISO 22901-2:2011 is intended to ensure that diagnostic data stream information is available to diagnostic tool application manufacturers to simplify the support of the aftermarket automotive service industry. The ODX modelled diagnostic data are compatible with the software requirements of the Modular Vehicle Communication Interface (ISO 22900-2 and ISO 22900-3). The ODX modelled diagnostic data can enable an MVCI device to communicate with the vehicle [ECU(s)] and interpret the diagnostic data contained in the messages exchanged between the external test equipment and the ECU(s). For ODX-compliant external test equipment, no software programming is necessary to convert diagnostic data into technician-readable information for display by the external test equipment. ISO 22901-2:2011 contains emissions-related OBD data examples described in ODX. The data examples derive from ISO 15031 (all parts). The emissions-related OBD ODX modelled diagnostic data describe the protocol specification from diagnostic communication of emissions-related ECUs; the communication parameters for the emissions-related OBD protocols and data link layers and for emissions-related ECU software; the related vehicle interface description (connectors and pin-out); and the functional description of diagnostic capabilities of a network of ECUs. ISO 22901-2:2011 is based on emissions-related diagnostic data derived and formatted according to the ISO 15765-4 DoCAN protocol. The definitions and XML representation is exemplary for all other protocols that are referenced in ISO 15031-5.