ISO 14229-1:2020

Road vehicles — Unified diagnostic services (UDS) — Part 1: Application layer

This document specifies data link independent requirements of diagnostic services, which allow a diagnostic tester (client) to control diagnostic functions in an on-vehicle electronic control unit (ECU, server) such as an electronic fuel injection, automatic gearbox, anti-lock braking system, etc. connected to a serial data link embedded in a road vehicle. It specifies generic services, which allow the diagnostic tester (client) to stop or to resume non-diagnostic message transmission on the data link. This document does not apply to non-diagnostic message transmission on the vehicle's communication data link between two electronic control units. However, this document does not restrict an in-vehicle on-board tester (client) implementation in an ECU in order to utilize the diagnostic services on the vehicle's communication data link to perform bidirectional diagnostic data exchange. This document does not specify any implementation requirements.

Véhicules routiers — Services de diagnostic unifiés (SDU) — Partie 1: Couche application

General Information

• Status: Published
• Publication Date: 06-Feb-2020
• ICS: 43.180 - Diagnostic, maintenance and test equipment
• Technical Committee: ISO/TC 22/SC 31 - Data communication
• Drafting Committee: ISO/TC 22/SC 31/WG 2 - Vehicle diagnostic protocols
• Current Stage: 9092 - International Standard to be revised
• Completion Date: 09-Oct-2023

Relations

• Consolidated By: ISO 16090-1:2022 - Machine tools safety — Machining centres, milling machines, transfer machines — Part 1: Safety requirements
• Effective Date: 06-Jun-2022
• Amended By: ISO 14229-1:2020/Amd 1:2022 - Road vehicles — Unified diagnostic services (UDS) — Part 1: Application layer — Amendment 1
• Effective Date: 08-Jan-2022
• Revises: ISO 14229-1:2013 - Road vehicles — Unified diagnostic services (UDS) — Part 1: Specification and requirements
• Effective Date: 10-Dec-2016

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 14229-1
Third edition
2020-02
Road vehicles — Unified diagnostic
services (UDS) —
Part 1:
Application layer
Véhicules routiers — Services de diagnostic unifiés (SDU) —
Partie 1: Couches application
Reference number
ISO 14229-1:2020(E)
©
ISO 2020

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ISO 14229-1:2020(E)

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ISO 14229-1:2020(E)
Contents Page
Foreword . ix
Introduction . x
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols and abbreviated terms . 5
5 Conventions . 5
6 Document overview . 6
7 Application layer services . 7
7.1 General . 7
7.2 Format description of application layer services . 9
7.3 Format description of service primitives . 9
7.3.1 General definition. 9
7.3.2 Service request and service indication primitives . 10
7.3.3 Service response and service confirm primitives . 11
7.3.4 Service request-confirm and service response-confirm primitives . 11
7.4 Service data unit specification . 12
7.4.1 Mandatory parameters . 12
7.4.2 Vehicle system requirements . 14
7.4.3 Optional parameters - A_AE, application layer remote address . 15
8 Application layer protocol . 15
8.1 General definition. 15
8.2 A_PDU, application protocol data unit . 16
8.3 A_PCI, application protocol control information . 16
8.4 SI, service identifier .
...