ISO 15031-3:2023

Road vehicles — Communication between vehicle and external equipment for emissions-related diagnostics — Part 3: Diagnostic connector and related electrical circuits: Specification and use

This document 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 external test equipment. This document describes the requirements for the physical connection and associated pin usage to allow for standard access to the OBD data. This document is technically equivalent to SAE J1962 with the exception of the specific requirements identified and the specification of additional requirements related to right hand driven (RHD) vehicles.

Véhicules routiers — Communications entre un véhicule et un équipement externe pour le diagnostic relatif aux émissions — Partie 3: Connecteur de diagnostic et circuits électriques associés: spécifications et utilisation

General Information

• Status: Published
• Publication Date: 05-Feb-2023
• ICS: 13.040.50 - Transport exhaust emissions
• ICS: 43.040.10 - Electrical and electronic equipment
• ICS: 43.180 - Diagnostic, maintenance and test equipment
• Technical Committee: ISO/TC 22/SC 31 - Data communication
• Drafting Committee: ISO/TC 22/SC 31 - Data communication
• Current Stage: 6060 - International Standard published
• Start Date: 06-Feb-2023
• Due Date: 19-May-2023
• Completion Date: 06-Feb-2023

Relations

• Revises: ISO 15031-3:2016 - Road vehicles — Communication between vehicle and external equipment for emissions-related diagnostics — Part 3: Diagnostic connector and related electrical circuits: Specification and use
• Effective Date: 06-Jun-2022

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 15031-3
Third edition
2023-02
Road vehicles — Communication
between vehicle and external
equipment for emissions-related
diagnostics —
Part 3:
Diagnostic connector and related
electrical circuits: Specification and
use
Véhicules routiers — Communications entre un véhicule et un
équipement externe pour le diagnostic relatif aux émissions —
Partie 3: Connecteur de diagnostic et circuits électriques associés:
spécifications et utilisation
Reference number
ISO 15031-3:2023(E)
© ISO 2023

---------------------- Page: 1 ----------------------
ISO 15031-3:2023(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
  © ISO 2023 – All rights reserved

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ISO 15031-3:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 1
5 Conventions . 2
6 Technical requirements overview . 2
7 Physical layer . 2
7.1 PM – Data link connector (DLC) requirements . 2
7.1.1 PM – RHD vehicle DLC system performance requirements . 2
7.1.2 PM – RHD vehicle DLC location and position . 2
7.1.3 PM – RHD vehicle DLC securely mounted . 2
7.1.4 PM – RHD vehicle DLC mounting direction and tolerance . 2
7.2 PM – DLC Ethernet support layout . 3
7.3 PM – ACL for on-board pyrotechnic devices . 3
Bibliography . 4
iii
© ISO 2023 – All rights reserved

---------------------- Page: 3 ----------------------
ISO 15031-3:2023(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 31,
Data communication.
This third edition cancels and replaces the second edition (ISO 15031-3:2016), which has been
technically revised.
The main changes are as follows:
— restructuration of the document;
— introduction of requirement numbers, names and definitions;
— update of the dated references to SAE J1962:201607.
A list of all parts in the ISO 15031 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
  © ISO 2023 – All rights reserved

---------------------- Page: 4 ----------------------
ISO 15031-3:2023(E)
Introduction
The ISO 15031 series 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 overview about communication between vehicle and external equipment for emissions-related
diagnostics. ISO 15031-2 through ISO 15031-7 are based on SAE recommended practices. This document
is based on SAE J1962 (diagnostic connector).
The first edition of this document was based on SAE J1962 and was inte
...

2022-11-17
ISO/PROOF PRF 15031-3:2022(E)
ISO/TC 22/SC 31
Secretariat: DIN
Date: 2022-12-07
Road vehicles — Communication between vehicle and external
equipment for emissions-related diagnostics —
Part 3:
Diagnostic connector and related electrical circuits:
specificationSpecification and use
Véhicules routiers — Communications entre un véhicule et un équipement externe pour le diagnostic
relatif aux émissions —Partie 3: Connecteur de diagnostic et circuits électriques associés: spécifications et
utilisation
Partie 3: Connecteur de diagnostic et circuits électriques associés: spécifications et utilisation
Document type:  Error! Reference source not found.
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Document stage:  (50) PROOF
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---------------------- Page: 1 ----------------------
Copyright notice
This
PROOF stage
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Document stage:  (50) PROOF
Document language:  Error! Reference source not found.

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---------------------- Page: 2 ----------------------
ISO/PROOF PRF 15031-3:2022(E)
© ISO document is a working draft 2022
All rights reserved. Unless otherwise specified, or committee draft and is copyright-protected by ISO. While required
in the reproductioncontext of working drafts or committee drafts in any form for use by participants in the
ISO standards development process is permitted without prior permission from ISO, neither its implementation, no
part of this document nor any extract from itpublication may be reproduced, stored or utilized otherwise in any
form or transmitted in any form for any other purposeby any means, electronic or mechanical, including
photocopying, or posting on the internet or an intranet, without prior written permission from ISO. Permission can
be requested from either ISO at the address below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
E-mail: [e-mail]
Website: www.iso.orgRequests for permission to reproduce this document for the purpose of selling it should be
addressed as shown below or to ISO's member body in the country of the requester:
[Indicate the full address, telephone number, fax number, telex number, and electronic mail address, as
appropriate, of the Copyright Manager of the ISO member body responsible for the secretariat of the TC or SC
within the framework of which the working document has been prepared.]
Reproduction for sales purposes may be subject to royalty payments or a licensing agreement.
Violators may be prosecuted.

Published in Switzerland
© ISO 2022 – All rights reserved iii
© ISO 2022 – All rights reserved iii

---------------------- Page: 3 ----------------------
ISO/PROOF PRF 15031-3:2022(E)
Contents Page
Foreword . v
Introduction . vi
Part 3: Diagnostic connector and related electrical circuits: Specification and use . 1
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 1
5 Conventions . 2
6 Technical requirements overview . 2
7 Physical layer . 2
7.1 PM – Data link connector (DLC) requirements . 2
7.1.1 PM – RHD vehicle DLC system performance requirements . 2
7.1.2 PM – RHD vehicle DLC location and position . 2
7.1.3 PM – RHD vehicle DLC securely mounted . 2
7.1.4 PM – RHD vehicle DLC mounting direction and tolerance . 3
7.2 PM – DLC Ethernet support layout . 3
7.3 PM – ACL for on-board pyrotechnic devices . 3
Bibliography . 4

iv
iv © ISO 2022 – All rights reserved
 © ISO 2022 – All rights reserved

---------------------- Page: 4 ----------------------
ISO/PROOF PRF 15031-3:2022(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Field Code Changed
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any
patent rights identified during the development of the document will be in the Introduction and/or on
the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the World
Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 31,
Data communication.
This third edition cancels and replaces the second edition (ISO 15031-3:2016), which has been
technically revised.
The main changes are as follows:
— — restructured restructuration of the document;
— — introduction of requirement numbers, names and definitions;
— — updatedupdate of the dated references to SAE J1962:201607.
A list of all parts in the ISO 15031 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
© ISO 2022 – All rights reserved v
© ISO 2022 – All rights reserved v

---------------------- Page: 5 ----------------------
ISO/PROOF PRF 15031-3:2022(E)
Introduction
The ISO 15031 series 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
overview about communication between vehicle and external equipment for
...

INTERNATIONAL ISO
STANDARD 15031-3
Third edition
Road vehicles — Communication
between vehicle and external
equipment for emissions-related
diagnostics —
Part 3:
Diagnostic connector and related
electrical circuits: Specification and
use
Véhicules routiers — Communications entre un véhicule et un
équipement externe pour le diagnostic relatif aux émissions —
Partie 3: Connecteur de diagnostic et circuits électriques associés:
spécifications et utilisation
PROOF/ÉPREUVE
Reference number
ISO 15031-3:2022(E)
© ISO 2022

---------------------- Page: 1 ----------------------
ISO 15031-3:2022(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
PROOF/ÉPREUVE © ISO 2022 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 15031-3:2022(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 1
5 Conventions . 2
6 Technical requirements overview . 2
7 Physical layer . 2
7.1 PM – Data link connector (DLC) requirements . 2
7.1.1 PM – RHD vehicle DLC system performance requirements . 2
7.1.2 PM – RHD vehicle DLC location and position . 2
7.1.3 PM – RHD vehicle DLC securely mounted . 2
7.1.4 PM – RHD vehicle DLC mounting direction and tolerance . 2
7.2 PM – DLC Ethernet support layout . 3
7.3 PM – ACL for on-board pyrotechnic devices . 3
Bibliography . 4
iii
© ISO 2022 – All rights reserved PROOF/ÉPREUVE

---------------------- Page: 3 ----------------------
ISO 15031-3:2022(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 31,
Data communication.
This third edition cancels and replaces the second edition (ISO 15031-3:2016), which has been
technically revised.
The main changes are as follows:
— restructuration of the document;
— introduction of requirement numbers, names and definitions;
— update of the dated references to SAE J1962:201607.
A list of all parts in the ISO 15031 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
PROOF/ÉPREUVE © ISO 2022 – All rights reserved

---------------------- Page: 4 ----------------------
ISO 15031-3:2022(E)
Introduction
The ISO 15031 series 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 overview about communication between vehicle and external equipment for emissions-related
diagnostics. ISO 15031-2 through ISO 15031-7 are based on SAE recommended practices. This document
is based on SAE J1962 (diagnostic connector).
The first edition of this document 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 ty
...