GB/T 41590.1-2022Road vehicles - Diagnostic communication over K-Line (DoK-Line) - Part 1: Physical layer (English PDF)

Foreword

This Document was drafted as per the rules specified in GB/T 1.1-2020 Directives for

Standardization - Part 1.Rules for the Structure and Drafting of Standardizing Documents.

This Document was Part 1 of GB/T 41590 Road Vehicles - Diagnostic Communication over K-

Line (DoK-Line). GB/T 41590 has published the following parts.

--- Part 1.Physical Layer;

--- Part 2.Data Link Layer;

--- Part 3.Application Layer;

--- Part 4.Requirements for Emission-Related Systems.

This Document equivalently adopts ISO 14230-1.2012 Road Vehicles - Diagnostic

Communication over K-Line (DoK-Line) - Part 1.Physical Layer.

Please note some contents of this Document may involve patents. The issuing agency of this

Document shall not assume the responsibility to identify these patents.

This Document was proposed by the Ministry of Industry and Information Technology of the

People's Republic of China.

This Document shall be under the jurisdiction of National Technical Committee of Auto

Standardization (SAC/TC 114).

Drafting organizations of this Document. Zhejiang Geely Holding Group Co., Ltd.; Dongfeng

Motor Group Company Limited; China FAW Group Co., Ltd.; Great Wall Motor Company

Limited; Pan-Asia Technical Automotive Center Co., Ltd.; Huizhou Desay SV Automotive Co.,

Ltd.; Xingkedi Technology (Taizhou) Co., Ltd.; FAW-Volkswagen Automotive Co., Ltd.; SAIC

GM Wuling Automobile Company Limited; Chery Automobile Co., Ltd.; CATARC

Automotive Test Center (Tianjin) Co., Ltd.; and CATARC (Tianjin) Automotive Engineering

Research Institute Co., Ltd.

Chief drafting staffs of this Document. Xia Liping, Niu Yujiao. Yao Zaiqi, Chen Jinghua, Li

Yan, Wang Zhen, Hong Yu, Liu Bin, Sun Wang, Wu Yuzhi, Shi Xiaomi, Zhang Dingyu, Gao

Changbin, Liu Le, Han Guangsheng, Wang Cong, Xing Baojia, Li Dongdong, Sun Zhilei, and

Wang Lichong.

Road Vehicles - Diagnostic Communication over K-Lin

(DoK-Line) - Part 1.Physical Layer

1 Scope

This Document specifies the physical layer, based on ISO 9141 (all parts), on which the

diagnostic services shall be implemented.

This Document is based on the physical layer described in ISO 9141-2, but expanded to allow

for road vehicles with either 12 V D.C. or 24 V D.C. voltage supply.

NOTE. In this Document, values given in parentheses apply to 24 V D.C. systems.

2 Normative References

The provisions in following documents become the essential provisions of this Document

through reference in this Document. For the dated documents, only the versions with the dates

indicated are applicable to this Document; for the undated documents, only the latest version

(including all the amendments) is applicable to this Document.

ISO 7637-1 Road Vehicles - Electrical Disturbances from Conduction and Coupling - Part

1 Definitions and General Considerations

NOTE. GB/T 21437.1-2021 Road Vehicles - Test Method of Electrical Disturbances from

Conduction and Coupling - Part 1.Definitions and General Considerations (ISO 7637-1.2015,

MOD)

ISO 7637-2 Road Vehicles - Electrical Disturbances from Conduction and Coupling - Part

2 Electrical Transient Conduction along Supply Lines Only

NOTE. GB/T 21437.2-2021 Road Vehicles - Test Method of Electrical Disturbances from

Conduction and Coupling - Part 2.Electrical Transient Conduction along Supply Lines Only (ISO

7637-2.2011, MOD)

ISO/IEC 10731 Information Technology - Open Systems Interconnection - Basic

Reference Model - Conventions for the Definition of OSI Services

NOTE. GB/T 17967-2000 Information Technology - Open Systems Interconnection - Basic

Reference Model - Convention for the Definition of OSI Services (idt ISO/IEC 10731.1994)

ISO 14230-2 Road Vehicles - Diagnostic Communication over K-Line (DoK-Line) - Part

2 Data Link Layer

NOTE. GB/T 41590.2-2022 Road Vehicles - Diagnostic Communication over K-Line (DoK-Line)

- Part 2.Data Link Layer (ISO 14230-2.2016, IDT)

ISO 15031-2 Road Vehicles - Communication between Vehicle and External Equipment

for Emissions-Related Diagnostics - Part 2.Guidance on Terms, Definitions,

Abbreviations and Acronyms

3 Terms, Definitions, Symbols and Abbreviated Terms

4 Conventions

This Document is based on the conventions discussed in the OSI Service Conventions (ISO/IEC

10731) as they apply for communication services.

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