该部分指定了应用法定 OBD 的 CAN 系统相关的发送要求，该通讯网络由一
个配有单个或多个相关发送的 ECU 和外部测试设备构成。 该部分基于对法定
OBD 指定了标准限制的 ISO 15765-2，ISO11898-1 和 ISO11898-2 的基础上
并未指定车辆内的 CAN 总线结构。应用法定 OBD 的车辆应遵守外部测试设
备的要求。(This section specifies the sending requirements associated with the application of the OBD system for the statutory CAN
Each consists of a single or multiple associated ECU and external test equipment. This section is based on the statutory
OBD specifies standard restrictions based on ISO 15765-2, ISO11898-1, and ISO11898-2
The CAN bus structure in the vehicle is not specified. Vehicles subject to statutory OBD shall comply with external test settings
Preparation requirements.)