ISO 15765-1:2011
(Main)Road vehicles — Diagnostic communication over Controller Area Network (DoCAN) — Part 1: General information and use case definition
Road vehicles — Diagnostic communication over Controller Area Network (DoCAN) — Part 1: General information and use case definition
ISO 15765-1:2011 gives an overview of the structure and the partitioning of ISO 15765, and shows the relationships between the different parts. It also defines the diagnostic network architecture. The terminology defined in this part is common for all diagnostic networks and is used throughout all parts of ISO 15765. The diagnostic communication over controller area network (DoCAN) protocol supports the standardized service primitive interface as specified in ISO 14229‑2.
Véhicules routiers — Communication de diagnostic sur gestionnaire de réseau de communication (DoCAN) — Partie 1: Informations générales et définition de cas d'usage
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 15765-1
Second edition
2011-10-15
Road vehicles — Diagnostic
communication over Controller Area
Network (DoCAN) —
Part 1:
General information and use case
definition
Véhicules routiers — Communication de diagnostic sur gestionnaire de
réseau de communication (DoCAN) —
Partie 1: Informations générales et définition de cas d’usage
Reference number
ISO 15765-1:2011(E)
©
ISO 2011
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ISO 15765-1:2011(E)
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ii © ISO 2011 – All rights reserved
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ISO 15765-1:2011(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and abbreviated terms . 1
3.1 Terms and definitions . 1
3.2 Abbreviated terms . 1
4 Conventions . 2
5 Overview of ISO 15765 . 2
5.1 General . 2
5.2 Open Systems Interconnection (OSI) model . 2
6 Diagnostic network architecture . 4
6.1 Diagnostic network . 4
6.2 Diagnostic sub-network . 4
6.3 Diagnostic gateway . 4
7 DoCAN use case overview and principles . 4
7.1 Overview . 4
7.2 DoCAN use case clusters . 4
8 DoCAN use case definition . 5
8.1 Use case 1 — Vehicle inspection and repair . 5
8.2 Use case 2 — Vehicle/ECU software reprogramming . 5
8.3 Use case 3 — Vehicle/ECU assembly line inspection and repair . 6
Bibliography . 7
© ISO 2011 – All rights reserved iii
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ISO 15765-1:2011(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 15765-1 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 3, Electrical
and electronic equipment.
This second edition cancels and replaces the first edition (ISO 15765-1:2004), which has been technically
revised.
ISO 15765 consists of the following parts, under the general title Road vehicles — Diagnostic communication
over Controller Area Network (DoCAN):
— Part 1: General information and use case definition
— Part 2: Transport protocol and network layer services
— Part 3: Implementation of unified diagnostic services (UDS on CAN)
— Part 4: Requirements for emissions-related systems
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ISO 15765-1:2011(E)
Introduction
This document set includes the communication between the vehicle’s on-board diagnostic (OBD) systems and
test equipment implemented across vehicles within the scope of the legislated OBD.
It has been established in order to apply the emissions-related diagnostic services as specified in ISO 15031-5.
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 structure communication systems into seven layers as shown
in Table 1.
Table 1 — Enhanced and legislated-OBD diagnostic specifications applicable to the OSI layers
Vehicle
manufacturer Legislated OBD Legislated WWH-OBD
Applicability OSI 7 layers
enhanced (on-board diagnostics) (on-board diagnostics)
diagnostics
ISO 14229-1,
Application (layer 7) ISO 15031-5 ISO 27145-3, ISO 14229-1
ISO 14229-3
ISO 15031-2, ISO 27145-2, SAE 1930-DA,
ISO 15031-5, SAE J1979-DA, SAE J2012-DA,
Vehicle manufacturer ISO 15031-6, SAE J1939:2011,
Presentation (layer 6)
specific SAE J1930-DA, Appendix C (SPN),
SAE J1979-DA, SAE J1939-73:2010,
SAE J2012-DA Appendix A (FMI)
Seven layer
according to
Session (layer 5) ISO 14229-2
ISO/IEC 7498-1
Transport protocol
and
ISO 15765-4,
(layer 4)
ISO/IEC 10731 ISO 15765-2 ISO 15765-2
ISO 15765-2
Network (layer 3)
Data link (layer 2) ISO 11898-1,
ISO 15765-4 ISO 27145-4
ISO 11898-2,
ISO 15765-4,
ISO 11898-3, ISO 11898-1,
ISO 11898-1,
ISO 11898-5, ISO 11898-2
Physical (layer 1)
ISO 11898-2
or
user defined
The application layer services covered by ISO 14229-3 have been defined in compliance with diagnostic
services established in ISO 14229-1 and ISO 15031-5, but are not limited to use only with them. ISO 14229-3
is also compatible with most diagnostic services defined in national standards or vehicle manufacturer’s
specifications.
The transport protocol and network layer services covered by this part of ISO 15765 have been defined to be
independent of the physical layer implemented, and a physical layer is only specified for legislated OBD.
For other application areas, ISO 15765 can be used with any CAN physical layer.
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INTERNATIONAL STANDARD ISO 15765-1:2011(E)
Road vehicles — Diagnostic communication over Controller
Area Network (DoCAN) —
Part 1:
General information and use case definition
1 Scope
This part of ISO 15765 gives an overview of the structure and the partitioning of ISO 15765, and shows the
relationships between the different parts. It also defines the diagnostic network architecture. The terminology
defined in this part of ISO 15765 is common for all diagnostic networks and is used throughout all parts of
ISO 15765.
The diagnostic communication over controller area network (DoCAN) protocol supports the standardized
service primitive interface as specified in ISO 14229-2.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced document
(including any amendments) applies.
ISO/IEC 7498-1, Information technology — Open Systems Interconnection — Basic Reference Model: The
Basic Model
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/IEC 7498-1 apply.
3.2 Abbreviated terms
For the purposes of this document, the following abbreviated terms apply.
DoCAN diagnostic communication over controller area network
CAN controller area network
ECU electronic control unit
FMI failure mode indicator
OBD on-board diagnostics
SPN suspect parameter number
WWH-OBD world-wide harmonized on-board diagnostics
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ISO 15765-1:2011(E)
4 Conventions
ISO 15765 is based on the conventions discussed in the OSI Service Conventions (ISO/IEC 10731) as they
apply for diagnostic services.
5 Overview of ISO 15765
5.1 General
ISO 15765 is applicable to vehicle diagnostic systems implemented on a CAN communication network as
specified in ISO 11898.
ISO 15765 has been established in order to define common requirements for vehicle diagnostic systems
implemented on a CAN communication link as specified in ISO 11898.
Although primarily intended for diagnostic systems, ISO 15765 has been developed to also meet requirements
from other CAN-based systems needing a network layer protocol.
5.2 Open Systems Interconnection (OSI) model
ISO 15765 is based on the Open Systems Interconnection (OSI) Basic Reference Model as specified in
ISO/IEC 7498-1 which structures communication systems into seven layers.
All parts of ISO 15765 are guided by the OSI service conventions as specified in ISO/IEC 10731 to the extent
that they are applicable to diagnostic services. These conventions define the interaction between the service
user and the service provider through service primitives.
The aim of this subclause is to give an overview of the OSI model and show how it has been used as a guideline
for this part of ISO 15765. It also shows how the OSI service conventions have been applied to ISO 15765.
The OSI model structures data communication into seven layers called, from top down, application layer
(layer 7), presentation layer (layer 6), session layer (layer 5), transport protocol layer (layer 4), network layer
(layer 3), data link layer (layer 2) and physical layer (layer 1).
A subset of these layers is used in ISO 15765, which specifies the application, session, transport protocol,
network, data link and physical layers
...
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