ISO 13400-3:2016规定了基于IEEE 802.3 100BASE-TX的物理和数据链路层的车辆通信接口和测试设备要求。 该接口作为车辆和测试设备之间基于IP的通信的物理基础。本文件规定了以下方面: -信号和接线示意图要求，以确保车辆接口和以太网以及测试设备通信接口的物理层兼容性； -发现/识别车内诊断以太网接口； -激活和停用车内诊断以太网接口； -机械和电气诊断连接器要求； -此版本已修改为包含两个以太网管脚分配的标识。

ISO 13400-3:2016 specifies the vehicle communication interface and test equipment requirements for a physical and data link layer based on IEEE 802.3 100BASE-TX. This interface serves as the physical basis for IP-based communication between the vehicle and test equipment. This document specifies the following aspects: - requirements for signal and wiring schematics in order to ensure physical layer compatibility of the vehicle interface and Ethernet networks and test equipment communication interfaces; - discovery/identification of the in-vehicle diagnostic Ethernet interface; - activation and deactivation of the in-vehicle diagnostic Ethernet interface; - mechanical and electrical diagnostic connector requirements; - this edition has been modified to include the identification of two Ethernet pin assignments.