ISO 20730-3:2021

INTERNATIONAL ISO
STANDARD 20730-3
First edition
2021-10
Road vehicles — Vehicle interface
for electronic Periodic Technical
Inspection (ePTI) —
Part 3:
Data definitions
Véhicules routiers — Interface de véhicule pour le contrôle technique
périodique électronique (ePTI) —
Partie 3: Définition des données
Reference number
© ISO 2021
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Published in Switzerland
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviated terms.2
4.1 Symbols . 2
4.2 Abbreviated terms . 2
5 Informative guidance for considering ePTI relevance . 2
6 ePTI-relevant system list, DIDs and RIDs . 3
Annex A (normative) ePTI-relevant system list . 4
Annex B (normative) DID definitions.9
Annex C (normative) Routine definitions . .36
Annex D (normative) Templates for proposed identifiers and names .42
Bibliography .43
iii
Foreword
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electrotechnical standardization.
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www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 31,
Data communication.
A list of all parts in the ISO 20730 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
Introduction
Roadworthiness testing is a part of a wider regime designed to ensure that vehicles are kept in
a safe and environmentally acceptable condition during their use. This regime covers periodic
roadworthiness testing of vehicles and technical roadside inspections of vehicles used for commercial
road transport activities and provides a vehicle registration procedure allowing for the suspension of
a vehicle’s authorization to be used in road traffic where the vehicle constitutes an immediate risk to
road safety. Periodic testing is the main tool to ensure roadworthiness. Technical roadside inspections
of commercial vehicles are merely complementary to periodic testing.
An ePTI system list, which is defined in this document, summarizes ePTI-relevant systems and specifies
a defined name (system), a unique identifier (ePTI system identifier) and a description for each ePTI
system. All the definitions in this document refer to this ePTI system list.
The ISO 20730 series is based on the Open Systems Interconnection (OSI) basic reference model specified
[1] [3]
in ISO/IEC 7498-1 and ISO/IEC 10731, which structures communication systems into seven layers.
When mapped on this model, the application protocol and data link framework requirements specified/
referenced in the ISO 20730 series are structured according to Figure 1.
Figure 1 illustrates a standard-based documentation concept, which consists of the following main
clusters:
— vehicle diagnostic communication framework: covers all relevant basic vehicle diagnostic
communication specifications of OSI layers 7, 6, and 5;
— vehicle diagnostic communication use case framework: covers the master specification, which
specifies use cases und requirements of subject matter of OSI layer 7;
— presentation layer framework: covers all data relevant specifications of OSI layer 6;
— conformance test plan: covers the conformance test plan requirements of the use cases and
communication requirements of OSI layers 7, 6, and 5;
— lower OSI layer framework: covers all vehicle diagnostic protocol standards of OSI layers 4, 3, 2, and
1, which are relevant and referenced by the use case specific standard.
v
Figure 1 — ePTI document reference according to OSI model
vi
INTERNATIONAL STANDARD ISO 20730-3:2021(E)
Road vehicles — Vehicle interface for electronic Periodic
Technical Inspection (ePTI) —
Part 3:
Data definitions
1 Scope
This document specifies ePTI-relevant system identifiers, data identifiers, routine identifiers, input/
output control identifiers, data types, CompuMethods (computations), and units.
This document describes ePTI systems' data definitions and associated technical requirements.
The technical requirements of data definitions of emissions-related systems are specified in other
[4] [5]
standards, e.g. the ISO 15031 series , the ISO 27145 series , and SAE J1979DA.
The ePTI system list defined in this document summarizes ePTI-relevant systems and specifies a
defined name (system), a unique identifier (ePTI system identifier) and a description for each ePTI-
relevant system.
This document does not specify any type of test method or pass/fail criteria of the ePTI-relevant system
during a PTI.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 3779, Road vehicles — Vehicle identification number (VIN) — Content and structure
ISO 14229-1, Road vehicles — Unified diagnostic services (UDS) — Part 1: Application layer
ISO 20730-1, Road vehicles — Vehicle interface for electronic Periodic Technical Inspection (ePTI) — Part 1:
Application and communication requirements
SAE J1979DA, Digital Annex of E/E Diagnostic Test Modes
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 14229-1, ISO 20730-1 and the
following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www. iso. org/o bp
— IEC Electropedia: available at https:// www.e lectropedia. org/
3.1
error
indicates an erroneous status
3.2
currently not available
information cannot be reported at time of request
3.3
not installed
information cannot be reported because the source is physically not available
4 Symbols and abbreviated terms
4.1 Symbols
--- empty table cell or feature undefined
4.2 Abbreviated terms
Cvt convention
DID data identifier
IOID input output identifier
IOCT input output control
LSB least significant byte
M mandatory
MI malfunction indicator
MSB most significant byte
O optional
RCTP routineControlType
RCOR routineControlOptionRecord
RID routine identifier
SPN suspect parameter number
TP tyre pressure
U user optional
5 Informative guidance for considering ePTI relevance
ePTI-relevant systems are all vehicle systems and components, that when not operating to their design
criteria, affect the safety of the vehicle. These are vehicle systems that perform at least one of the
following functions:
a) deceleration of the vehicle;
b) longitudinal, lateral and yaw stabilization of vehicle movements;
c) hold the vehicle stationary;
d) change of angle >3° on any steered wheel, while vehicle speed is ≥15 km/h;
e) adjustment of the intensity and/or direction of the road illumination;
f) change of the signal image of the vehicle lighting devices, while vehicle speed is ≥15 km/h;
g) protecting the survival space of road users;
h) adjustment of the behaviour of the suspension and shock absorbers;
i) monitoring and control of tyre air pressure;
j) adjustment of the aerodynamic devices;
k) high voltage electrical propulsion ≥60 V;
l) changes in visibility;
m) hazard warning and emergency related communication;
n) generation of external warning for, e.g. pedestrian attention in regard to electric vehicle;
o) adjustment of the vehicle height or tilt;
p) automatically controlled acceleration.
The criteria and definition should be updated as technology progresses.
EXAMPLE The “automatic emergency brake” vehicle system can perform the “deceleration” function and is
therefore an ePTI-relevant vehicle system.
6 ePTI-relevant system list, DIDs and RIDs
The ePTI-relevant system list shall be in accordance with Annex A. The status of Annex A is normative.
The DID definitions shall be in accordance with Annex B. The status of Annex B is normative.
The RID definitions shall be in accordance with Annex C. The status of Annex C is normative.
The templates for identifier definitions shall be in accordance with Annex D. The status of Annex D is
normative.
Annex A
(normative)
ePTI-relevant system list
The ePTI-relevant systems are identified based on the functional criteria in Clause 5. Table A.1
specifies ePTI-relevantSystemIdentifier, ePTI-relevant system name, symbolic name and ePTI system
description. The symbolic names provide the possibility , for example, to make a unique reference to
diagnostic description information in case a diagnostic service is not yet implemented using the ePTI-
relevantSystemIdentifier as specified in this document. Symbolic names use the character set ISO 8859-
[2]
1 in the range of 30 to 39 (0, 1, … 9), 41 to 5A (A, B, … Z), and 5F (_).
16 16 16 16 16
Table A.1 — Definition of ePTI-relevant system identifiers and names
ePTISys- ePTI-relevant Symbolic name ePTI system description
tem-Identi- system name
fier
0000 Reserved RESRVD Reserved by this document for future standardi-
zation.
0001 Generic ePTI SYS_GENERIC_INFO This “
...