ISO 15031-3:2016 道路車両—排出ガス関連の診断のための車両と外部機器間の通信—パート3：診断コネクタと関連する電気回路：仕様と使用 | ページ 2

3.1 用語と定義

このドキュメントでは、SAE J1962 の用語と定義が適用されます。

Foreword

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The committee responsible for this document is ISO/TC 22, Road vehicles, Subcommittee SC 31, Data communication.

This second edition cancels and replaces the first edition (ISO 15031-3:2004), which has been technically revised.

ISO 15031 consists of the following parts, under the general title Road vehicles — Communication between vehicle and external equipment for emissions-related diagnostics:

• Part 1: General information and use case definition
• Part 2: Guidance on terms, definitions, abbreviations and acronyms
• Part 3: Diagnostic connector and related electrical circuits: Specification and use
• Part 4: External test equipment
• Part 5: Emissions-related diagnostic services
• Part 6: Diagnostic trouble code definitions
• Part 7: Data link security

Introduction

ISO 15031 consists of a number of parts which, taken together, provide a coherent self-consistent set of specifications to facilitate emissions-related diagnostics. ISO 15031-1 provides an introduction to the series of International Standards. ISO 15031-2 through ISO 15031-7 are based on SAE recommended practices. This part of ISO 15031 is based on SAE J1962 (Diagnostic connector).

ISO 15031 includes the communication between the vehicle's on-board diagnostic (OBD) systems and test equipment implemented across vehicles within the scope of the legislated emissions-related OBD.

To achieve this, it is based on the Open Systems Interconnection (OSI) Basic Reference Model in accordance with ISO/IEC 7498-1 and ISO/IEC 10731, which structures communication systems into seven layers. When mapped on this model, the services specified by ISO 15031 are broken into the following in accordance with Table 1.

• Diagnostic services (layer 7), specified in the following:
  • ISO 15031-5 (emissions-related OBD);
  • ISO 27145-3 (WWH-OBD).

• Presentation layer (layer 6), specified in the following:

  • ISO 15031-2, SAE J1930-DA;
  • ISO 15031-5, SAE J1979-DA;
  • ISO 15031-6, SAE J2012-DA (OBD);
  • ISO 27145-2, SAE J2012-DA (WWH-OBD).

• Session layer services (layer 5), specified in the following:

  • ISO 14229-2 supports ISO 15765-4 DoCAN and ISO 14230-4 DoK-Line protocols;
  • ISO 14229-2 is not applicable to the SAE J1850 and ISO 9141-2 protocols.

• Transport layer services (layer 4), specified in the following:

  • DoCAN: ISO 15765-2 Transport protocol and network layer services;
  • SAE J1850: 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 services (layer 3), specified in the following:

  • DoCAN: ISO 15765-2 Transport protocol and network layer services;
  • SAE J1850: 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), specified in the following:

  • DoCAN: ISO 15765-4, ISO 11898-1;
  • SAE J1850;
  • ISO 9141-2;
  • DoK-Line: ISO 14230-2.

• Physical layer (layer 1), specified in the following:

  • DoCAN: ISO 15765-4, ISO 11898-1, ISO 11898-2;
  • SAE J1850;
  • ISO 9141-2;
  • DoK-Line: ISO 14230-1.

1 Scope

This part of ISO 15031 references the latest publication of SAE J1962.

On-board diagnostic (OBD) regulations require road vehicles to be equipped with a standardized connector for purposes of access to OBD information by ISO 15031-4 compliant external test equipment. This part of ISO 15031 describes the requirements for the physical connection and associated pin usage to allow for standard access to the OBD data.

The first edition of this part of ISO 15031 was based on SAE J1962 and was intended to meet European OBD requirements for 2000 and later model year vehicles, and added a modified connector type to accommodate vehicles with a 24 V system. This revised part of ISO 15031 is technically equivalent to SAE J1962 with the exception of the specific requirements identified in the document.

This part of ISO 15031 specifies additional requirements related to right hand driven (RHD) vehicles.

Annex A and Annex B are for information and not required to fulfil emissions-related OBD.

2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

SAE J1962:2015, Diagnostic connector

3 Terms, definitions and abbreviated terms

3.2 Abbreviated terms

Bibliography