ISO 15765-4-2021

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Road vehicles — Diagnostic

communication over Controller Area

Network (DoCAN) —

Part 4:

Requirements for emissions-related

systems

Véhicules routiers — Diagnostic sur gestionnaire de réseau de

communication (DoCAN) —

Partie 4: Exigences applicables aux systèmes associés aux émissions

INTERNATIONAL

STANDARD

ISO

15765-4

Fourth edition

2021-07

Reference number

ISO 15765-4:2021(E)











CP 401 • Ch. de Blandonnet 8



Phone: +41 22 749 01 11



Website: www.iso.org

Published in Switzerland

ISO 15765-4:2021(E)

Foreword ..........................................................................................................................................................................................................................................v

Introduction ................................................................................................................................................................................................................................vi

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Termsanddefinitions ..................................................................................................................................................................................... 1

4 Symbols and abbreviated terms ........................................................................................................................................................... 2

  ......................................................................................................................................................................................................... 2

4.2 Abbreviated terms ............................................................................................................................................................................... 3

5 Conventions ............................................................................................................................................................................................................... 4

6 Application ................................................................................................................................................................................................................. 4

  ......................................................................................................... 4

  .................................................................................................................. 4

  ................................................................................................................... 4

6.1.3 Others ........................................................................................................................................................................................ 4

  .............................................................. 4

6.3 Bit rate validation procedure ...................................................................................................................................................... 5

6.3.1 bitrateRecord ...................................................................................................................................................................... 5

6.3.2 Bit rate validation ............................................................................................................................................................ 5

  ........................................................................ 6

  .................................................................................................................................... 7

  ................................................................................. 7

  ................................................................................. 9

6.5 Support of ECUNAME reporting............................................................................................................................................ 11

7 Application layer (AL) ..................................................................................................................................................................................11

8 Session layer (SL) ..............................................................................................................................................................................................12

9 Transport layer (TL) ......................................................................................................................................................................................12

10 Network layer (NL) ..........................................................................................................................................................................................12

  ........................................................................................................................................................................................................ 12

  .................................................................................................................................................................... 12

10.2.1 Timing parameter values .......................................................................................................................................12

  .........................................................................................13

  ................................................................ 14

10.3 Addressing formats .......................................................................................................................................................................... 15

  ....................................................................................... 15

10.3.2 Functional addressing .............................................................................................................................................. 15

  .................................................................................................................................................... 15

  .................................................................................................................................................... 16

  ......................................................................................................................................... 16

10.4.2 OBDonUDS or OBDonEDS server/ECU ......................................................................................................16

10.5 Mapping of diagnostic addresses .........................................................................................................................................16

  .................................................................................................. 16

  ............................................................................................................................................... 17

  ............................................................................................................................................... 18

11 Data link layer (DLL) .....................................................................................................................................................................................18

12 Physical layer (PHY) .......................................................................................................................................................................................18

  ........................................................................................................................................................................................................ 18

12.2 Bit rates ...................................................................................................................................................................................................... 19

12.3 CAN bit timing ...................................................................................................................................................................................... 19

12.3.1 Parameter values .......................................................................................................................................................... 19

Contents Page

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标签： #ISO

摘要：

ISO 15765-4-2021 是一项关于车辆控制器局域网（CAN）诊断通信的国际标准，主要规定了基于 CAN 总线的诊断协议（DoCAN）在道路车辆中的应用要求。该标准是 ISO 15765 系列的一部分，重点覆盖了网络层服务、定时参数、流量控制机制以及诊断消息的封装与传输规则，确保不同厂商的电子控制单元（ECU）之间能够实现可靠、兼容的诊断数据交换。2021 年版更新了与统一诊断服务（UDS）协议及其他排放相关诊断标准的互操作性要求，并支持扩展的车辆网络拓扑结构。本标准广泛应用于汽车 OB

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ISO 15765-4-2021

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