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ISO 14299-1 2020 是国际标准化组织（ISO）发布的一份标准，专门针对汽车诊断开发中的统一诊断服务（Unified Diagnostic Services, UDS）。该标准是汽车行业的重要规范，旨在促进不同制造商之间的通信一致性，确保汽车诊断和维修过程的高效和精确。 UDS 是一种应用层协议，用于汽车电子控制系统与诊断工具之间的通信。它定义了一套通用的服务，用于检测、诊断和修复车辆电子系统的故障。UDS 的应用层是基于OSI模型的七层网络模型构建的，主要集中在应用层和会话层的功能。 标准的第三版，发布于2020年，更新了先前的版本，以适应技术的最新发展和行业的变化需求。它包含了以下主要内容： 1. **范围**：ISO 14229-1 定义了应用于道路车辆电子控制单元（ECU）的诊断服务，涵盖了数据传输、故障检测、故障代码读取、数据流分析、软件更新等多个方面。 2. **引用标准**：在开发和实施UDS时，需要遵循其他相关的ISO标准和行业规范，确保兼容性和互操作性。 3. **术语和定义**：标准中提供了关键术语的明确定义，以便所有参与者能理解并统一使用，如“诊断会话”、“服务请求”和“响应”。 4. **符号和缩略词**：为了简化沟通，标准定义了一系列的符号和缩写，包括用于描述服务和数据传输的编码。 5. **服务描述**：UDS 提供的服务包括但不限于：诊断通信控制、安全访问、读数据ByIdentifier、写数据ByIdentifier、请求存储器快照、清除/删除故障码等。 6. **错误处理和确认机制**：标准规定了错误报告和确认机制，以确保诊断过程中数据的准确性和可靠性。 7. **安全措施**：考虑到汽车系统的安全性，UDS 还包括了访问控制和数据保护的规定，防止未经授权的访问和篡改。 8. **兼容性和升级**：UDS 标准考虑了现有系统的兼容性，同时也为未来的系统升级和技术进步留有空间。 9. **实施指南**：标准可能包含实施指南，帮助制造商和开发者理解如何将UDS集成到他们的产品和服务中。 UDS 的实施有助于提高汽车行业的效率，减少因不兼容问题导致的维修时间和成本。同时，随着电动汽车和自动驾驶技术的发展，UDS 在确保车辆安全和可靠运行方面的作用越来越重要。汽车制造商、诊断工具供应商以及维修技师都需要对ISO 14229-1 2020标准有深入的理解，以满足不断增长的复杂汽车电子系统的诊断需求。
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©
ISO 2020
Road vehicles — Unified diagnostic
services (UDS) —
Part 1:
Application layer
Véhicules routiers — Services de diagnostic unifiés (SDU) —
Partie 1: Couches application
INTERNATIONAL
STANDARD
ISO
14229-1
Third edition
2020-02
Reference number
ISO 14229-1:2020(E)
ISO 14229-1:2020(E)
ii © ISO 2020 – All rights reserved
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020
CP 401 • Ch. de Blandonnet 8
Phone: +41 22 749 01 11
Website: www.iso.org
Published in Switzerland
ISO 14229-1:2020(E)
© ISO 2020 – All rights reserved
iii
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 ..................................................................................................................................... 17
8.5 A_NR_SI, Negative response service identifier ................................................................................... 17
8.6 Negative response/confirmation service primitive ......................................................................... 18
8.7 Server response implementation rules ................................................................................................ 18
8.7.1 General definitions....................................................................................................................................... 18
8.7.2 General server response behaviour ...................................................................................................... 19
8.7.3 Request message with SubFunction parameter and server response behaviour ................. 21
8.7.4 Request message without SubFunction parameter and server response behaviour .......... 25
8.7.5 Pseudo code example of server response behaviour ...................................................................... 27
8.7.6 Multiple concurrent request messages with physical and functional addressing ................ 29
9 Service description conventions ............................................................................................................. 29
9.1 Service description ...................................................................................................................................... 29
9.2 Request message ........................................................................................................................................... 30
9.2.1 Request message definition ...................................................................................................................... 30
9.2.2 Request message SubFunction parameter $Level (LEV_) definition ......................................... 31
9.2.3 Request message data-parameter definition ..................................................................................... 33
9.3 Positive response message........................................................................................................................ 33
9.3.1 Positive response message definition ................................................................................................... 33
9.3.2 Positive response message data-parameter definition .................................................................. 34
ISO 14229-1:2020(E)
iv
© ISO 2020 – All rights reserved
9.4 Supported negative response codes (NRC_) ....................................................................................... 34
9.5 Message flow examples .............................................................................................................................. 35
10 Diagnostic and communication management functional unit ..................................................... 36
10.1 Overview ......................................................................................................................................................... 36
10.2 DiagnosticSessionControl (10
16
) service ............................................................................................. 36
10.2.1 Service description ...................................................................................................................................... 36
10.2.2 Request message .......................................................................................................................................... 40
10.2.3 Positive response message ....................................................................................................................... 41
10.2.4 Supported negative response codes (NRC_) ....................................................................................... 42
10.2.5 Message flow example(s) DiagnosticSessionControl – Start programmingSession ............ 43
10.3 ECUReset (11
16
) service ............................................................................................................................. 43
10.3.1 Service description ...................................................................................................................................... 43
10.3.2 Request message .......................................................................................................................................... 44
10.3.3 Positive response message ....................................................................................................................... 45
10.3.4 Supported negative response codes (NRC_) ....................................................................................... 46
10.3.5 Message flow example ECUReset ............................................................................................................ 47
10.4 SecurityAccess (27
16
) service................................................................................................................... 47
10.4.1 Service description ...................................................................................................................................... 47
10.4.2 Request message .......................................................................................................................................... 49
10.4.3 Positive response message ....................................................................................................................... 51
10.4.4 Supported negative response codes (NRC_) ....................................................................................... 51
10.4.5 Message flow example(s) SecurityAccess ............................................................................................ 52
10.5 CommunicationControl (28
16
) service ................................................................................................. 54
10.5.1 Service description ...................................................................................................................................... 54
10.5.2 Request message .......................................................................................................................................... 54
10.5.3 Positive response message ....................................................................................................................... 56
10.5.4 Supported negative response codes (NRC_) ....................................................................................... 56
10.5.5 Message flow example CommunicationControl (disable transmission of network
management messages)............................................................................................................................. 57
10.5.6 Message flow example CommunicationControl (switch a remote network into the
diagnostic-only scheduling mode where the node with address 000A
16
is connected
to) ....................................................................................................................................................................... 57
10.5.7 Message flow example CommunicationControl (switch to application scheduling
mode with enhanced address information, the node 000A
16
, which is connected to a
sub-network, is addressed) ...................................................................................................................... 58
10.6 Authentication (29
16
) service .................................................................................................................. 59
10.6.1 Service overview .......................................................................................................................................... 59
10.6.2 Authentication with PKI Certificate Exchange (APCE).................................................................... 60
10.6.3 Authentication with Challenge-Response (ACR) .............................................................................. 65
10.6.4 Common requirements .............................................................................................................................. 69
10.6.5 Request message .......................................................................................................................................... 71
10.6.6 Positive response message ....................................................................................................................... 78
10.6.7 Supported negative response codes (NRC_) ....................................................................................... 85
10.6.8 Message flow example(s) Authentication ........................................................................................... 86
10.7 TesterPresent (3E
16
) service .................................................................................................................. 108
10.7.1 Service description .................................................................................................................................... 108
10.7.2 Request message ........................................................................................................................................ 108
10.7.3 Positive response message ..................................................................................................................... 108
10.7.4 Supported negative response codes (NRC_) ..................................................................................... 109
10.7.5 Message flow example(s) TesterPresent ........................................................................................... 109
10.8 ControlDTCSetting (85
16
) service ......................................................................................................... 110
10.8.1 Service description .................................................................................................................................... 110
10.8.2 Request message ........................................................................................................................................ 111
ISO 14229-1:2020(E)
© ISO 2020 – All rights reserved
v
10.8.3 Positive response message..................................................................................................................... 112
10.8.4 Supported negative response codes (NRC_) ..................................................................................... 112
10.8.5 Message flow example(s) ControlDTCSetting ................................................................................. 113
10.9 ResponseOnEvent (86
16
) service ......................................................................................................... 114
10.9.1 Service description ................................................................................................................................... 114
10.9.2 Request message ........................................................................................................................................ 121
10.9.3 Positive response message..................................................................................................................... 127
10.9.4 Supported negative response codes (NRC_) ..................................................................................... 130
10.9.5 Message flow example(s) ResponseOnEvent ................................................................................... 131
10.10 LinkControl (87
16
) service ...................................................................................................................... 146
10.10.1 Service description ........................................................................................................................... 146
10.10.2 Request message ............................................................................................................................... 147
10.10.3 Positive response message ............................................................................................................ 149
10.10.4 Supported negative response codes (NRC_) ............................................................................ 149
10.10.5 Message flow example(s) LinkControl ...................................................................................... 150
11 Data transmission functional unit ....................................................................................................... 152
11.1 Overview ....................................................................................................................................................... 152
11.2 ReadDataByIdentifier (22
16
) service .................................................................................................. 153
11.2.1 Service description ................................................................................................................................... 153
11.2.2 Request message ........................................................................................................................................ 153
11.2.3 Positive response message..................................................................................................................... 154
11.2.4 Supported negative response codes (NRC_) ..................................................................................... 155
11.2.5 Message flow example ReadDataByIdentifier ................................................................................. 157
11.3 ReadMemoryByAddress (23
16
) service ............................................................................................. 159
11.3.1 Service description ................................................................................................................................... 159
11.3.2 Request message ........................................................................................................................................ 159
11.3.3 Positive response message..................................................................................................................... 161
11.3.4 Supported negative response codes (NRC_) ..................................................................................... 161
11.3.5 Message flow example ReadMemoryByAddress ............................................................................ 163
11.4 ReadScalingDataByIdentifier (24
16
) service .................................................................................... 166
11.4.1 Service description ................................................................................................................................... 166
11.4.2 Request message ........................................................................................................................................ 166
11.4.3 Positive response message..................................................................................................................... 166
11.4.4 Supported negative response codes (NRC_) ..................................................................................... 167
11.4.5 Message flow example ReadScalingDataByIdentifier .................................................................. 169
11.5 ReadDataByPeriodicIdentifier (2A
16
) service ................................................................................. 172
11.5.1 Service description ................................................................................................................................... 172
11.5.2 Request message ........................................................................................................................................ 176
11.5.3 Positive response message..................................................................................................................... 176
11.5.4 Supported negative response codes (NRC_) ..................................................................................... 177
11.5.5 Message flow example ReadDataByPeriodicIdentifier ................................................................ 180
11.6 DynamicallyDefineDataIdentifier (2C
16
) service ........................................................................... 191
11.6.1 Service description ................................................................................................................................... 191
11.6.2 Request message ........................................................................................................................................ 192
11.6.3 Positive response message..................................................................................................................... 195
11.6.4 Supported negative response codes (NRC_) ..................................................................................... 196
11.6.5 Message flow examples DynamicallyDefineDataIdentifier ........................................................ 197
11.7 WriteDataByIdentifier (2E
16
) service ................................................................................................. 212
11.7.1 Service description ................................................................................................................................... 212
11.7.2 Request message ........................................................................................................................................ 212
11.7.3 Positive response message..................................................................................................................... 213
11.7.4 Supported negative response codes (NRC_) ..................................................................................... 214
11.7.5 Message flow example WriteDataByIdentifier ............................................................................... 215
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