ISO 7639:1985
(Main)Road vehicles - Diagnostic systems - Graphical symbols
Road vehicles - Diagnostic systems - Graphical symbols
Specifies graphical symbols for diagnostic testers: marking of controls, indicators and tell-tales; use for indications on screens, and similar variable indicating systems; marking of connections and other input and output openings. Tabulates the terms and functions in English and French together with the graphical symbols of concern.
Véhicules routiers — Systèmes de diagnostic — Symboles graphiques
La présente Norme internationale spécifie les symboles graphiques pour bancs de diagnostic en ce qui concerne le marquage des commandes, indicateurs et témoins; l'utilisation pour les indications sur écrans et autres systèmes similaires d'indication de variables; le marquage des connexions et autres entrées et sorties. NOTE -- Pour les symboles graphiques pour les commandes, indicateurs et témoins dans les véhicules routiers, voir l'ISO 2575.
General Information
- Status
- Published
- Publication Date
- 24-Jul-1985
- Technical Committee
- ISO/TC 22/SC 31 - Data communication
- Drafting Committee
- ISO/TC 22/SC 31/WG 5 - Test equipment/Data eXchange Formats
- Current Stage
- 9093 - International Standard confirmed
- Start Date
- 28-Jun-2021
- Completion Date
- 13-Dec-2025
Overview
ISO 7639:1985 - Road vehicles - Diagnostic systems - Graphical symbols - defines a standardized set of graphical symbols for diagnostic testers used with road vehicles. The standard specifies symbols for the marking of controls, indicators and tell‑tales; for on‑screen and other variable indicating systems; and for marking connections and other input/output openings. ISO 7639 also tabulates the terms and functions in English and French alongside the corresponding graphical symbols.
Key topics and requirements
- Scope of use
- Symbols intended for diagnostic testers and vehicle diagnostic equipment.
- Applies to physical markings (controls, indicators, tell‑tales) and displayed indications (screens, raster/parade displays).
- Symbol categories covered
- Electrical and measurement symbols: voltage, frequency, current, resistance, capacitance.
- Emissions and gas identifiers: NOx, CO2, CO, HC.
- General control and interface symbols: main switch (on/off), circuit breaker, fuse, earth/ protective earth, input/output, data I/O.
- Vehicle function and component symbols: spark/compression engines (2‑ and 4‑stroke), rotary engines, pressure and temperature measurement, engine speed and windows, ignition components (coil terminals, ignition sensors), battery, generator/alternator, starter motor, motors (AC/DC), compressor/vacuum pump, strobe, throttle valve, waveform recorder, measuring cables, etc.
- Documentation style
- Symbols are presented with reference numbers and bilingual terms. Where applicable, references to other ISO/IEC standards and publications are noted in a “Remarks” column.
- Interoperability note
- ISO 7639 cross‑references other relevant symbol standards (see Related Standards).
Practical applications and users
Who uses ISO 7639:
- Diagnostic tool manufacturers - ensure consistent, internationally recognized symbols on handheld or bench testers and user interfaces.
- Vehicle OEMs and suppliers - standardize service equipment and workshop displays for compatibility across makes and regions.
- Service technicians and workshops - benefit from consistent iconography on testers and displays to speed fault diagnosis.
- Technical writers and UI designers - implement accurate symbols in manuals, on‑screen diagnostics and training materials.
- Regulators and standards bodies - reference standardized symbols for compliance and safety documentation.
Practical benefits:
- Improves user comprehension, reduces ambiguity in diagnostics, and supports international consistency for vehicle service equipment.
Related standards
- ISO 2575 - Road vehicles: Symbols for controls, indicators and tell‑tales (related use on vehicle panels)
- ISO 7000 - Graphical symbols for use on equipment: Index and synopsis
- ISO 1219 - Fluid power systems: Graphic symbols
- ISO 2972 - Numerical control of machines: Symbols
- IEC Publication 417 - Graphical symbols for use on equipment
- IEC 617‑4 - Graphical symbols for diagrams (Passive components)
Keywords: ISO 7639, graphical symbols, diagnostic testers, road vehicles, vehicle diagnostics, diagnostic systems, diagnostic equipment symbols.
Frequently Asked Questions
ISO 7639:1985 is a standard published by the International Organization for Standardization (ISO). Its full title is "Road vehicles - Diagnostic systems - Graphical symbols". This standard covers: Specifies graphical symbols for diagnostic testers: marking of controls, indicators and tell-tales; use for indications on screens, and similar variable indicating systems; marking of connections and other input and output openings. Tabulates the terms and functions in English and French together with the graphical symbols of concern.
Specifies graphical symbols for diagnostic testers: marking of controls, indicators and tell-tales; use for indications on screens, and similar variable indicating systems; marking of connections and other input and output openings. Tabulates the terms and functions in English and French together with the graphical symbols of concern.
ISO 7639:1985 is classified under the following ICS (International Classification for Standards) categories: 01.080.20 - Graphical symbols for use on specific equipment; 43.180 - Diagnostic, maintenance and test equipment. The ICS classification helps identify the subject area and facilitates finding related standards.
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Standards Content (Sample)
International Standard
Norme internationale
INTERNATIONAL ORGANIZATION FOR STANDARDlZATION.MEWlYHAPO&HAR OPrAHHSAlWlR ll0 CTAH~PTM3A~t+lWORGANlSATlON INTERNATIONALE DE NORMALISATION
- Diagnostic systems - Graphical symbols
Road vehicles
First edition - 1985-08-01
- SystGmes de diagnostic -
VQhicuIes routiers
Symboles graphiques
Premihe hdition - 1985-08-01
r
\
Ref. No./Mf. no : IS0 76394985 (E/F)
UDWCDU 629.113 : 620.1.05 : 003.6
w
-
Descriptors : road vehicles, diagnosis, checking equipment, graphic symbols. / Descripteurs : v6hicule routier, diagnostic, materiel de
verification, symbole graphique.
Price based on 9 pages/Prix base sur 9 pages
v>
Foreword
IS0 (the International Organization for Standardization) is a worldwide federation of
national standards bodies (IS0 member bodies). The work of preparing International
Standards is normally carried out through IS0 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, govern-
mental and non-governmental, in liaison with ISO, also take part in the work.
Draft International Standards adopted by the technical committees are circulated to
the member bodies for approval before their acceptance as International Standards by
the IS0 Council. They are approved in accordance with IS0 procedures requiring at
least 75 % approval by the member bodies voting.
International Standard IS0 7639 was prepared by Technical Committee ISO/TC 22,
Road vehicles.
0 International Organization for Standardization, 1985
Printed in Switzerland
ii
Avant-propos
L’ISO (Organisation internationale de normalisation) est une federation mondiale
d’organismes nationaux de normalisation (cornit& membres de I’ISO). L’elaboration
des Normes internationales est confide aux comites techniques de I’ISO. Chaque
comite membre interesse par une etude a le droit de faire partie du comite technique
tree a cet effet. Les organisations internationales, gouvernementales et non gouverne-
mentales, en liaison avec I’ISO, participent egalement aux travaux.
Les projets de Normes internationales adopt& par les comites techniques sont soumis
aux comites membres pour approbation, avant leur acceptation comme Normes inter-
nationales par le Conseil de I’ISO. Les Normes internationales sont approuvees confor-
mement aux procedures de I’ISO qui requierent I’approbation de 75 % au moins des
comites membres votants.
La Norme internationale IS0 7639 a et6 elaboree par le comite technique ISO/TC 22,
Whicules rou tiers.
Organisation internationale de normaiisation, 1985
Imprim en Suisse
This page intentionally left blank
INTERNATIONAL STANDARD
IS0 76394985 (E/F)
NORME INTERNATIONALE
Road vehicles - Diagnostic Whicules routiers - .
systems - Graphical Systemes de diagnostic -
symbols Symboles graphiques
1 Scope and field of application
1 Objet et domaine d’application
This International Standard specifies graphical symbols for
La presente Norme internationale specific les symboles graphi-
diagnostic testers :
ques pour banes de diagnostic en ce qui concerne
-
marking of controls, indicators and tell-tales;
- le marquage des commandes, indicateurs et temoins;
-
use for indications on screens, and similar variable in- - I’utilisation pour les indications sur ecrans et autres
.
dicating systems;
systemes similaires d’indication de variables;
-
marking of connections and other input and output
- le marquage des connexions et autres entrees et sor-
openings.
ties.
NOTE - For graphical symbols on controls, indicators and tell-tales in
NOTE - Pour les symboles graphiques pour les commandes, indica-
road vehicles, see IS0 2575.
teurs et temoins dans les vehicules routiers, voir I’ISO 2575.
2 References
2 Rgf&ences
IS0 1219, Fluid power systems and components - Graphic
IS0 1219, Transmissions h ydrauliques et pneumatiques -
symbols. S ymboles graphiques.
IS0 2575, Vehicules routiers - Symboles pour les com-
IS0 2575, Road vehicles - Symbols for controls, indicators
mandes, indica teurs et temoins.
and tell- tales.
IS0 2972, Commande numerique des machines - Symboles.
IS0 2972, Numerical control of machines - Symbols.
IS0 7oo0, Symboles graphiques utilisables sur le materiel -
IS0 7000, Graphical symbols for use on equipment - Index
and synopsis. Index et tableau synoptique.
IEC Publication 417, Graphical symbols for use on equipment Publication CEI 417, Symboles graphiques utilisables sur le
materiel - Index, releve et compilation des feuilles
- Index, sun/e y and compilation of the single sheets.
individuelles.
IEC Publication 617-4, Graphical symbols for diagrams - Publication CEI 617-4, Symboles graphiques pour schemas -
Part 4: Passive components. Partie 4 : Composants passifs.
3 Graphical symbols
3 Symboles graphiques
NOTE - Les numeros de reference des symboles apparaissant dans
NOTE - Reference numbers of symbols appearing in other Inter-
d’autres Normes internationales et Publications CEI sont indiques dans
national Standards and IEC Publications are given under “Remarks”.
la colonne ((Remarques)).
IS0 7639-1985 (E/F)
3.1 SignsBignes
Term, function (Graphical) symbol Remarks
No.
Remarques
NO Terme, fonction Symbole (graphique)
3.1.1 Voltage; frequency . , ,V , , . H z 2; ;ampzE; exemple :
Tension; frequence
3.1.2 Voltage
Tension
V
3.1.3 High voltage
Haute tension
kV
3.1.4 Electrical current
Courant electrique
A
3.1.5 Electrical resistance
Resistance electrique
a
3.1.6 Capacitance
Capacite
v
3.1.7 Nitrogen oxides
Oxydes d’azote
NOX
3.1.8 Carbon dioxide
Dioxyde de carbone
co
3.1.9 Carbon monoxide
Monoxyde de carbone
co
3.1 .I0 Hydrocarbons
Hydrocarbures
HC
IS0 76394985 (E/F)
3.2 General sym bols/Symboles ghkaux
No. Term, function
(Graphical) symbol Remarks
NO Terme, fonction
Symbole (graphique) Remarques
3.2.1 Main switch, on
IECKEI 417-5007
Commutateur general de mise en tension
-1
3.2.2 Main switch, off IECKEI 417-5008
Commutateur general de mise hors tension
3.2.3 Main switch, on/off
IECKEI 4175010
Commutateur general
3.2.4 Circuit breaker
Coupe-circuit
@
3.2.5 Fuse \ , IECKEI 417-5016
Fusible
.
.
3.2.6 Earth (ground)
IECKEI 417-5017
Terre (masse)
3.2.7 Protective earth (ground) IECKEI 417-5019
Terre de protection
_L
Frame, chassis, common return
3.2.8 IECKEI 417-5020
Structure; ch&sis; retour commun
A7
Zero adjustment
3.2.9 IS0 7000-0540
Mise B zero
+o+
3.2.10 Gauging
Verification
3.2.11 Adjustment of parameter IECKEI 417-5004
Reglage de parametre
3.2.12 Remote control
Commande B distance
IS0 7639-1985 (E/F)
No. Term, function (Graphical) symbol Remarks
NO Terme, fonction Symbole (graphique) Remarques
3.2.13 Brake, on I so 7000-0020
Frein serre
+Q
3.2.14 Brake, off
IS0 7000-0021
Frein desserre
IS0 7000-0017
3.2.15 Automatic process
Processus automatique
@
3.2.1
...
The article titled "ISO 7639:1985 - Road vehicles - Diagnostic systems - Graphical symbols" discusses the specifications of graphical symbols for diagnostic testers in road vehicles. These symbols are used for marking controls, indicators, tell-tales, indications on screens, and other input and output openings. The article includes a table that lists the terms and functions in both English and French, along with the corresponding graphical symbols.
기사 제목: ISO 7639:1985 - 도로 차량 - 진단 시스템 - 그래픽 심볼 기사 내용: 진단 테스터를 위한 그래픽 심볼에 대한 명세를 설명합니다. 제어장치, 지시등 및 알림등의 표시, 화면 및 유사한 가변 표시 시스템에 대한 표시 및 연결 및 기타 입력 및 출력 개구부에 대한 표시를 위해 사용됩니다. 해당하는 그래픽 심볼과 함께 영어와 프랑스어의 용어와 기능을 정리한 표를 포함하고 있습니다.
記事のタイトル:ISO 7639:1985 - 道路車両-診断システム-グラフィカルシンボル 記事の内容:診断テスターのためのグラフィカルシンボルの仕様について説明しています。コントロール、インジケーター、警告灯のマーキング、画面や類似の可変表示システムへの表示、接続やその他の入出力口のマーキングに使用されます。関連する英語とフランス語の用語と機能をグラフィカルシンボルとともにリスト化した表も含まれています。










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