ISO 14229-7-2022 PDF

Full title and description

Road vehicles — Unified diagnostic services (UDS) — Part 7: UDS on local interconnect network (UDSonLIN). This International Standard defines an application profile and implementation requirements for running UDS diagnostic services over the Local Interconnect Network (LIN) used in automotive electronic control systems.

Abstract

This document specifies UDSonLIN, an application profile that references ISO 14229‑1 and ISO 14229‑2 and sets out LIN-specific requirements and restrictions for diagnostic communication on LIN clusters. It covers additional constraints, service primitive definitions, data link and physical layer considerations, and requirements for LIN commander and responder nodes acting as gateways between LIN clusters and backbone networks.

General information

• Status: Published.
• Publication date: 25 April 2022.
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 43.180 (Diagnostic, maintenance and test equipment).
• Edition / version: Edition 2 (2022 revision).
• Number of pages: 18 (ISO edition).

Scope

Specifies the UDS application profile and implementation requirements for using Unified Diagnostic Services over LIN (UDSonLIN). The standard constrains and adapts the general UDS definitions from ISO 14229‑1 and ISO 14229‑2 to the characteristics and limitations of LIN, defines service primitive parameters and interfaces, and describes how LIN commander and responder nodes shall behave, including routing and gatewaying to backbone networks.

Key topics and requirements

• Definition of the UDSonLIN application profile and mapping to ISO 14229‑1 and ISO 14229‑2.
• LIN‑specific additional requirements and implementation restrictions for UDS services (message length, buffering, addressing).
• Service primitive and interface definitions for A_Data.req, A_Data.ind, A_Data.conf and data/link layer primitives.
• Requirements for LIN commander and responder nodes, including diagnostic classes, routing, and gateway behavior between LIN clusters and backbone networks.
• Interaction with LIN transport protocol (ISO 17987 series) and recommendations for interoperability with other backbone transports (e.g., CAN/ISO 15765).

Typical use and users

Used by automotive OEMs, Tier‑1 suppliers, ECU and diagnostic-tool developers, test houses, and systems integrators implementing or validating UDS diagnostic functionality over LIN clusters. Typical use cases include producing LIN ECUs that support UDS services, configuring LIN gateway/commander nodes to route diagnostics to backbone networks, and defining test suites for conformance.

Related standards

Part of the ISO 14229 UDS series and closely related to ISO 14229‑1 and ISO 14229‑2 (service and transport definitions). Interacts with the LIN family ISO 17987 (LIN transport and protocol parts) and with other vehicle network diagnostics standards such as ISO 15765‑2 (diagnostics over CAN). The 2022 edition replaces ISO 14229‑7:2015.

Keywords

UDS, UDSonLIN, LIN, automotive diagnostics, ISO 14229, diagnostic services, ECU, LIN commander, LIN responder, transport protocol, gateway, ISO 17987.

FAQ

Q: What is this standard?

A: ISO 14229‑7:2022 is the part of the Unified Diagnostic Services family that defines how UDS is implemented on the Local Interconnect Network (LIN), providing an application profile and LIN‑specific implementation requirements.

Q: What does it cover?

A: It covers LIN‑specific additions and restrictions to UDS, service primitive and interface definitions, data link and physical layer considerations for LIN, and requirements for commander/responder node behavior and routing between LIN clusters and backbone networks.

Q: Who typically uses it?

A: OEMs, Tier‑1 suppliers, ECU and diagnostic tool developers, test laboratories and integrators working on vehicle diagnostics over LIN.

Q: Is it current or superseded?

A: It is the current ISO edition published in 2022 (Edition 2), which replaces ISO 14229‑7:2015.

Q: Is it part of a series?

A: Yes — it is Part 7 of the ISO 14229 series (Unified Diagnostic Services). Other parts define the core UDS services and transport mechanisms; Part 7 provides the LIN application profile and LIN‑specific requirements.

Q: What are the key keywords?

A: UDS, UDSonLIN, LIN, diagnostics, ECU, transport protocol, ISO 14229, ISO 17987.