GB/T 42193.4-2022Road vehicles - Communication between vehicle and external equipment for emissions-related diagnostics - Part 4: External test equipment (English PDF)

foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules for Standardization Documents"

drafting.

This document is part 4 of GB/T 42193 "Communication of emission-related diagnostics between road vehicles and external equipment".

GB/T 42193 has issued the following parts.

--- Part 1.General information and use case definitions;

--- Part 2.Guidelines for terms, definitions, abbreviations and abbreviations;

--- Part 3.Requirements and use of diagnostic connectors and related circuits;

--- Part 4.External test equipment;

--- Part 7.Data link security.

This document is equivalent to ISO 15031-4.2014 "Communication of emission-related diagnostics between vehicles and external equipment on road vehicles Part 4

Section. External Test Equipment".

Please note that some contents of this document may refer to patents. The issuing agency of this document assumes no responsibility for identifying patents.

Introduction

GB/T 42193 consists of multiple parts, which together provide a coherent and organized set of specifications for the convenience of emissions

Close diagnostics.

GB/T 42193 consists of 7 parts.

--- Part 1.General information and use case definitions. The purpose is to provide a general overview of emission-related diagnostics between the vehicle and external equipment

Information and use case definitions intended to provide an introduction to the series of documents.

--- Part 2.Guidelines for terms, definitions, abbreviations and abbreviations. Communication of emission-related diagnostics between the vehicle and external equipment

Terms, definitions, abbreviations and abbreviations provide guidance and aim to unify the rules.

--- Part 3.Requirements and use of diagnostic connectors and related circuits. Connection of emissions-related diagnostics between the vehicle and external equipment

Provides requirements for connectors and associated circuitry designed to enable standard access to OBD data.

--- Part 4.External test equipment. It specifies the communication establishment method between the vehicle and the external test equipment and the requirements of the external test equipment.

The request is designed to allow external test equipment to effectively access the vehicle through OBD services.

--- Part 5.Emissions-related diagnostic services. Specifies the emission-related diagnostic service requirements between vehicles and external equipment, aiming to unify

Communication requirements.

--- Part 6.Definition of diagnostic trouble codes. Specifies the format and description of fault codes for emissions-related diagnostics between vehicles and external equipment

The aim is to unify the fault code format.

--- Part 7.Data link security. Provides guidance on vehicle diagnostic data link protection of road vehicle modules against illegal intrusion, aiming at

Provides guidance on protecting your vehicle from unauthorized access through the vehicle diagnostics connection.

GB/T 42193 includes within the scope of emission-related on-board diagnostics (OBD), between the OBD system of the vehicle and the test equipment passing the vehicle

communication between.

To achieve the above objectives, this document uses ISO /IEC 7498-1 and ISO /IEC 10731, the basic reference for Open Systems Interconnection (OSI).

model, which divides the communication system into seven layers. When mapping the services described in GB/T 42193 to the model, it can be divided into the following levels

(Table 1).

---Application layer (layer 7), see.

* ISO 15031-5 (emission related OBD);

* ISO 27145-3 (WWH-OBD).

--- Presentation layer (layer 6), see.

* ISO 15031-2, SAEJ1930-DA;

* ISO 15031-5, SAEJ1979-DA;

* ISO 15031-6, SAEJ2012-DA(OBD);

* ISO 27145-2, SAEJ2012-DA (WWH-OBD).

---Session layer (layer 5), see.

* ISO 14229-2 supports ISO 15765-4DoCAN and ISO 14230-4DoK-Line protocols;

* ISO 14229-2 is not applicable to SAEJ1850 and ISO 9141-2 protocols.

---Transport layer (layer 4), see.

* DoCAN. ISO 15765-2 transport layer protocol and network layer services;

* SAEJ1850.ISO 15031-5 emissions-related diagnostic services;

* ISO 9141-2.ISO 15031-5 emissions-related diagnostic services;

* DoK-Line. ISO 14230-4, ISO 15031-5 emissions-related diagnostic services.

---Network layer (layer 3), see.

* DoCAN. ISO 15765-2 transport layer protocol and network layer services;

* SAEJ1850.ISO 15031-5 emissions-related diagnostic services;

* ISO 9141-2.ISO 15031-5 emissions-related diagnostic services;

* DoK-Line. ISO 14230-4, ISO 15031-5 emissions-related diagnostic services.

---Data link layer (layer 2), see.

* DoCAN. ISO 15765-4, ISO 11898-1;

* SAEJ1850;

* ISO 9141-2;

* DoK-Line. ISO 14230-2.

---Physical layer (layer 1), see.

* DoCAN. ISO 15765-4, ISO 11898-1, ISO 11898-2;

* SAEJ1850;

* ISO 9141-2;

* DoK-Line. ISO 14230-1.

Table 1 Statutory emission-related OBD/WWH-OBD diagnostic specifications applicable to OSI layers

Applicability OSI Layer 7 emission-related OBD communication requirements emission-related WWH-OBD communication requirements

according to

ISO /IEC

7498-1 and

ISO /IEC

10731 Division

7 floors

application layer

(layer 7)

presentation layer

(layer 6)

session layer

(layer 5)

transport layer

(layer 4)

Network layer

(tier 3)

data link layer

(tier 2)

physical layer

(tier 1)

ISO 15031-5 ISO 27145-3

ISO 15031-2, ISO 15031-5,

ISO 15031-6SAEJ1930-DA/SAEJ1979-DA

ISO 27145-2

SAEJ1930-DA/SAEJ1979-DA

SAEJ2012-DA(OBD) SAEJ2012-DA(WWH-OBD)

Not applicable to ISO 14229-2

ISO 15031-5

ISO

14230-4

ISO 15765-2

SAE

J1850

ISO

9141-2

ISO

14230-2

ISO 11898-1

ISO

14230-1

ISO 11898-1

ISO 11898-2

ISO

15765-4

ISO 15765-2

ISO 11898-1

ISO 11898-1

ISO 11898-2

ISO

27145-4

ISO

13400-2

ISO

13400-3

Emissions related to road vehicles between vehicles and external equipment

Diagnostic communication part 4. external test equipment

1 Scope

This document specifies a set of standard diagnostic services (OBD services) and external test equipment (including scan tool equipment) provided by vehicles, which

These external devices provide complete, efficient and secure access to all public OBD (On-Board Diagnostics) compliant with this document on any vehicle

Serve.

This document specifies the following.

--- The communication establishment method between the vehicle equipped with OBD and the external test equipment;

--- A set of diagnostic services provided by external test equipment to perform the services defined in ISO 15031-5.

This document does not preclude additional performance or functionality of external test equipment, and it is the responsibility of the designer of the external test equipment to ensure that this additional functionality or functionality

There is no adverse effect on OBD-equipped vehicles (connected to external test equipment) or the external test equipment itself.

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references

For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to

this document.

GB/T 41590.2-2022 K-line-based diagnostic communication for road vehicles Part 2.Data link layer (ISO 14230-2.

2016, IDT)

Note. The content cited in this document has no technical differences from ISO 14230-2.2013.

GB/T 41590.4-2022 K-line-based diagnostic communication for road vehicles Part 4.Requirements for emission-related systems

(ISO 14230-4.2000, IDT)

ISO 7637-2.2011 Road vehicles electrical transient disturbances due to conduction and coupling Part 2.Electrical transients along power lines

Note. GB/T 21437.2-2021 Test methods for electrical disturbances caused by conduction and coupling of electrical/electronic components of road vehicles Part 2.Along the power line

Conducted emissions and immunity to electrical transients (ISO 7637-2.2011, MOD)

ISO 9141-2.1994 Road vehicle diagnostic system Part 2.CARB requirements for exchanging digital information (Road

ISO 15031-1 Road vehicles Communication of emissions-related diagnostics between vehicles and external equipment Part 1.General information and use

Note. GB/T 42193.1-2022 Communication of emission-related diagnostics between road vehicles and external equipment Part 1.General information and use cases

Example definition (ISO 15031-1.2010, IDT)

ISO 15031-2 Road vehicles Communication of emissions-related diagnostics between vehicles and external equipment Part 2.Terms, definitions, abbreviations and