ISO 15031-5:2015旨在满足美国和欧洲以及未来可能采用类似要求的任何其他地区的车载诊断（OBD）法规的数据报告要求。它规定了:请求和响应消息的消息格式，外部测试设备的请求消息和车辆的响应消息之间以及这些消息和后续请求消息之间的时间要求，如果数据不可用，车辆和外部测试设备的行为，以及一组诊断服务，具有相应的请求和响应消息内容，以满足OBD规定。 ISO 15031-5:2015包括满足多个地区、车型年、发动机类型和车辆类型的OBD要求所需的能力。对于一些地区来说，这些规定还不是最终的，预计未来会发生变化。ISO 15031-5:2015不试图解释这些法规，也不包括所含诊断服务和数据参数对各种车辆应用的适用性。 ISO 15031-5:2015的用户负责验证ISO 15031本部分各条款对特定车辆、发动机、车型年和地区的适用性。 ISO 15031-5:2015规定了机动车和外部测试设备需要支持的诊断服务和功能寻址请求/响应消息，用于机动车排放相关数据的诊断目的。任何符合ISO 15031-4要求的外部测试设备都使用这些信息从车辆中检索排放相关信息。 ISO 15031-5:2015中的每一条规定了ISO 9141-2、ISO 14230-4、SAE J1850和ISO 15765-4现有条款的附加细节，取代了这些规范。 ISO 15031-5:2015参考了SAE J1979-DA（数字附录），其中包括PIDs、OBDMID、TID和信息类型的所有定义。 ISO 15031-5:2015提供了满足国家要求的机制- 具体法规以及ISO 15031-5:2015中包含的并非所有能力都是特定国家法规所要求的。ISO 15031-5:2015不被视为法规解释的最终权威。因此，读者应根据自己的具体需求确定ISO 15031-5:2015中定义的能力的适用性。

ISO 15031-5:2015 is intended to satisfy the data reporting requirements of On-Board Diagnostic (OBD) regulations in the United States and Europe and any other region that may adopt similar requirements in the future. It specifies: message formats for request and response messages, timing requirements between request messages from external test equipment and response messages from vehicles and between those messages and subsequent request messages, behaviour of both the vehicle and external test equipment if data are not available, and a set of diagnostic services, with corresponding content of request and response messages, to satisfy OBD regulations. ISO 15031-5:2015 includes capabilities required to satisfy OBD requirements for multiple regions, model years, engine types, and vehicle types. Those regulations are not yet final for some regions and are expected to change in the future. ISO 15031-5:2015 makes no attempt to interpret the regulations and does not include applicability of the included diagnostic services and data parameters for various vehicle applications. The user of ISO 15031-5:2015 is responsible for verifying the applicability of each clause of this part of ISO 15031 for a specific vehicle, engine, model year, and region. ISO 15031-5:2015 specifies diagnostic services and functionally addressed request/response messages required to be supported by motor vehicles and external test equipment for diagnostic purposes which pertain to motor vehicle emission-related data. Any external test equipment meeting the requirements of ISO 15031？4 use these messages to retrieve emissions-related information from the vehicle. Each clause in ISO 15031-5:2015 which specifies additional details to existing clauses of ISO 9141？2, ISO 14230？4, SAE J1850, and ISO 15765？4 supersede those specifications. ISO 15031-5:2015 references SAE J1979-DA (Digital Annex), which includes all definitions of PIDs, OBDMIDs, TIDs, and INFOTYPEs. ISO 15031-5:2015 provides the mechanism to satisfy the requirements included in the country-specific regulations and not all capabilities included in ISO 15031-5:2015 are required by the country-specific regulations. ISO 15031-5:2015 is not considered a final authority for interpretation of the regulations. Therefore, readers should determine the applicability of capabilities defined in ISO 15031-5:2015 for their own specific needs.