1、 _ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising ther
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3、publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-49
4、70 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/J1939/3_201511 SURFACE VEHICLE RECOMMENDED PRACTICE J1939-3 NOV2015 Issued 2008-
5、12 Revised 2015-11 Superseding J1939-3 DEC2008 On Board Diagnostics Implementation Guide RATIONALE SAE J1939-03 was revised based upon ongoing industry discussions with ARB on HD OBD implementations, including US EPAs IM best practices memorandum, the use of 500K communications in 2016MY engines and
6、 SAE J1939-84 experiences for 2013 MY engines. FOREWORD The SAE J1939 series of SAE Recommended Practices has been developed by the Truck and Bus Control and Communications Network Subcommittee of the Truck and Bus Electrical and Electronics Committee. The objectives of the subcommittee are to devel
7、op information reports, recommended practices, and standards concerned with the requirements, design, and usage of ECUs, that transmit electronic signals and control information among vehicle components. The usage of these recommended practices is not limited to truck and bus applications. Other app
8、lications may be accommodated with immediate support being provided for construction and agricultural equipment, and stationary power systems. These documents are intended as a guide toward standard practice and are subject to change to keep pace with experience and technical advances. The SAE J1939
9、-03 On Board Diagnostics Implementation Guide identifies key requirements, guidelines, and recommendations on the design and integration of vehicle networks with service tools that query the vehicle for regulated diagnostics. ARB, US EPA, EU and WWH OBD regulations were considered for the developmen
10、t of SAE J1939-03. TABLE OF CONTENTS 1. SCOPE 3 1.1 Introduction 3 1.2 Identification of HDV Diagnostic Methods . 4 1.2.1 SAE J1939 Approach for HD OBD, OBD II, and WWH OBD 4 1.2.2 ISO 15765 Approach for HD OBD and OBD II 4 1.2.3 ISO 27145 Approach for WWH OBD . 4 1.3 Verification of OBD Requirement
11、s . 4 1.3.1 SAE J1939-84 4 1.3.2 SAE J1699-3 4 1.3.3 WWH OBD . 5 2. REFERENCES 5 2.1 Applicable Publications 5 2.2 Government Documents 6 SAE INTERNATIONAL J1939-3 NOV2015 Page 2 of 53 3. SYMBOLS AND ABBREVIATED TERMS . 7 4. REQUIREMENTS AND GUIDELINES FOR OBD IMPLEMENTATION USING SAE J1939 8 4.1 Ph
12、ysical Layer Definition . 8 4.1.1 Signal Definition . 8 4.1.2 Media . 9 4.1.3 Topology 9 4.1.4 AC Termination 9 4.2 Diagnostic Connector . 9 4.2.1 Power Connection 9 4.2.2 Battery+ Fusing 9 4.3 Data Link Layer Definition 9 4.3.1 Physical Address Definitions . 10 4.3.2 PDU Format for CAN Identifiers
13、10 4.3.3 Request/Response System . 10 4.3.4 Transport Services . 11 4.4 Network Layer Definition 11 4.4.1 Network Layer 11 4.4.2 Recommended Network Topology for OBD Devices 11 4.4.3 Network Layer and Network Management 12 4.4.4 Address Claim 12 4.4.5 Network Capabilities for Service Tools 12 4.5 Ap
14、plication Layer . 12 4.5.1 Broadcast Messages . 12 4.5.2 Diagnostics Services 13 5. VEHICLE INTEGRATION PRINCIPLES FOR OBD 13 5.1 MIL Illumination and Diagnostics . 13 5.2 Additional Instrumentation Diagnostics 14 5.3 Multiplexed Vehicle Architectures 14 6. GENERAL SERVICE TOOL REQUIREMENTS 14 6.1 S
15、ingle Purpose SAE J1939 Service Tool 14 6.2 Multi-Purpose Service Tools 14 6.3 Power Connection 15 6.4 Application of SAE J1939 15 6.4.1 General Requirements . 15 6.4.2 Diagnostic Services . 15 7. SERVICE TOOL INITIALIZATION . 15 7.1 Automatic Protocol Detection 15 7.2 Identification of SAE J1939 OB
16、D Support . 15 7.3 OBD Network Device Identification 15 7.4 Identification of SAE J1939 WWH-OBD Support 16 7.5 Parametric Data Table Construction 16 8. HD OBD AND OBD II INSPECTION AND MAINTENANCE CLIENT SERVER INTERACTION 20 8.1 Inspection and Maintenance Process Summary . 20 8.2 MIL Status 23 8.2.
17、1 Aggregation of DM1 MIL Status for IM 23 8.2.2 Scope of Aggregation 23 8.3 Diagnostic Readiness and Monitor Status . 23 8.3.1 Service Tool Request . 23 8.3.2 OBD System Response . 24 8.4 Detected Failures . 24 8.4.1 HD OBD and OBD II Detected Failures . 24 8.4.2 WWH OBD Detected Failures . 25 SAE I
18、NTERNATIONAL J1939-3 NOV2015 Page 3 of 53 9. WWH OBD VOBD IMPLEMENTATION GUIDELINES . 25 9.1 WWH OBD Information Use Cases . 26 9.2 VOBD Function for SAE J1939 26 9.3 VOBD Function Implementation Architecture 26 9.4 VOBD Function Vehicle Level Aggregation . 27 9.5 VOBD Function Use Case 2 and Use Ca
19、se 3 Considerations 28 10. NOTES . 30 10.1 Marginal Indicia 30 Appendix A Index of WWH OBD Support . 31 Figure 1 Application of SAE J1939 standards to open system network layer concepts 8 Figure 2-1 Automatic protocol detection process summary 17 Figure 2-2 Automatic protocol detection process summa
20、ry, page 2 . 18 Figure 2-3 Automatic protocol detection process summary, page 3 . 19 Figure 3-1 HD OBD and OBD II inspection/maintenance (im) process summary for SAE J1939 21 Figure 3-2 HD OBD readiness check inspection as defined by US EPA best practice 22 Figure 4 VOBD function architecture exampl
21、es . 27 Figure 5 VOBD Function vehicle readiness aggregation . 28 Figure 6 Use case 2 examples 29 Figure B1 SAE J1939-03 heavy duty HD-OBD I/M Test process start 37 Figure B2 SAE J1939-03 heavy duty HD-OBD I/M test process page a . 38 Figure B3 SAE J1939-03 heavy duty HD-OBD I/M test process page b
22、. 39 Figure B4 SAE J1939-03 heavy duty HD-OBD I/M test process page c . 40 Figure B5 SAE J1939-03 heavy duty HD-OBD I/M test process page d . 41 Figure B6 SAE J1939-03 heavy duty HD-OBD I/M test process page e . 42 Figure B7 SAE J1939-03 heavy duty HD-OBD I/M test process page f 43 Figure B8 SAE J19
23、39-03 heavy duty HD-OBD I/M test process page g . 44 Figure B9 SAE J1939-03 heavy duty HD-OBD I/M test process page h . 45 Figure B10 SAE J1939-03 heavy duty HD-OBD I/M test process page i 46 Figure B11 SAE J1939-03 heavy duty HD-OBD I/M test process page j 47 Figure B12 SAE J1939-03 heavy duty HD-O
24、BD I/M test process page k . 48 Figure B13 SAE J1939-03 heavy duty HD-OBD I/M test process page l 49 Figure B14 SAE J1939-03 heavy duty HD-OBD I/M test process page m 50 Figure B15 SAE J1939-03 heavy duty HD-OBD I/M test process page n . 51 Table 1 MIl Status aggregation operator 23 Table 2 IM Failu
25、re detection for fault combinations 25 Table A1 WWH OBD use case 1 mapping . 31 Table A2 WWH OBD use case 2 mapping . 32 Table A3 WWH OBD use case 3 mapping . 34 Table A4 WWH OBD fault reporting messages by status and severity class . 35 1. SCOPE 1.1 Introduction SAE J1939-03 provides requirements a
26、nd guidelines for the implementation of On Board Diagnostics (OBD) on heavy-duty vehicles (HDV) using the SAE J1939 family of standards. The guidelines identify where the necessary information to meet OBD regulations may be found among the SAE J1939 document set. Key requirements are identified here
27、 to insure the interoperability of OBD scan tools across individual OBD compliant vehicles. Market-defined regulations permit the use of SAE J1939 to meet OBD requirements. Implementers are cautioned to obtain and review the specific regulations for the markets where their products are sold. This do
28、cument is focused on guidelines and requirements to satisfy the State of California Air Resources Board (ARB), the authors of 13 CCR 1971.1, United States Environmental Protection Agency, Euro IV and V requirements from European Commission directives, and UN/ECE WP 29 GRPE WWH OBD Global Technical R
29、egulation (GTR). SAE INTERNATIONAL J1939-3 NOV2015 Page 4 of 53 1.2 Identification of HDV Diagnostic Methods There are three approaches for providing OBD services. SAE J1939 provides OBD services that are integrated with known powertrain control messages and methods for HDV. This document focuses on
30、 the use of SAE J1939 to satisfy OBD requirements. ISO 15765-4 and ISO 27145 are identified as comparative references. These standards define methods for on board diagnostics communications that are independent of vehicles powertrain control and information methods. The three approaches are identifi
31、ed below. 1.2.1 SAE J1939 Approach for HD OBD, OBD II, and WWH OBD SAE J1939 provides an open systems approach for the integration of HDV components. Within this approach, diagnostic methods and messages are provided to achieve HD OBD, OBD II, and WWH OBD requirements. This specification provides gu
32、idelines and requirements for the implementation of HD OBD, OBD II and WWH OBD requirements using SAE J1939 constructs. The SAE J1939 series of standards does not define scan tool standards in a document structure that is equivalent to SAE J1978 (ISO 15031-4) or ISO 27145. In SAE J1939, standardized
33、 scan tools are applications of the requirements given in SAE J1939, SAE J1939-01, SAE J1939-21, SAE J1939-31, SAE J1939-71, SAE J1939-73, SAE J1939-81, and SAE J1939-84. Section 4 discusses the SAE J1939 document structure and its application to scan tools. Subsequent sections discuss topics of par
34、ticular interest in the development of standardized scan tool for SAE J1939. 1.2.2 ISO 15765 Approach for HD OBD and OBD II ISO 15765-4 may be used as described therein to satisfy HD OBD and OBD II requirements for Heavy Duty Vehicles. ISO 15765-4 outlines the individual parts that comprise the diag
35、nostic requirements for OBD. If ISO 15765 is selected, the implementer shall follow the directives given in ISO 15765-4. Under ISO 15765-4, ISO 15031 describes OBD Service Tool requirements and the OBD message interface in ISO-15031-4 and ISO 15031-5. SAE J1978 is equivalent to ISO 15031-4, and SAE
36、J1979 is equivalent to ISO 15031-5. 1.2.3 ISO 27145 Approach for WWH OBD ISO 27145 defines data and messaging to satisfy WWH OBD requirements. Implementers may choose to fulfill ISO 27145 when required to meet WWH OBD requirements in local regulations. ISO 27145 defines a VOBD concept for providing
37、a logical function for vehicle-level on-board diagnostics using wireline Ethernet and wireline CAN. The logical function may be implemented as a gateway or virtually within one or more compliant modules. This document discusses the process required when implementing the VOBD function for WWH OBD usi
38、ng messages defined in SAE J1939-73. Presently, GTR 5 is best represented in Annex 9b of UN ECE R49. 1.3 Verification of OBD Requirements ARB and US EPA regulations require verification of OBD requirements to assure standardized scan tool interoperation. Compliance to standardized communication requ
39、irements for scan tools is determined by SAE J1939-84 and SAE J1699-3. 1.3.1 SAE J1939-84 SAE J1939-84 provides methods to verify interaction between the service tool and vehicle for the SAE J1939 approach. SAE J1939-84 standardizes the qualification of vehicles for use with HD OBD and OBD II scan t
40、ools that support SAE J1939. SAE J1939-84 adapts the concepts of SAE J1699 as enabled by SAE J1939-73, SAE J1939-71, and SAE J1939-21. 1.3.2 SAE J1699-3 SAE J1699-3 describes the qualification of vehicles for use with scan tools for the ISO 15765-4 / ISO 15031-4 approach. SAE J1699-3 does not apply
41、to vehicles using SAE J1939 diagnostics. SAE INTERNATIONAL J1939-3 NOV2015 Page 5 of 53 1.3.3 WWH OBD The WWH OBD GTR recognizes SAE J1939-73 as a means to support WWH OBD. This document supports the definitions in SAE J1939-73 with specific requirements and process guidelines to eliminate misinterp
42、retation of the messages defined in -73. Specific requirements for formal evaluation of engines or vehicles are not defined within the GTR. 2. REFERENCES 2.1 Applicable Publications The following documents contain provisions, which through reference in this text constitute provisions for SAE J1939-0
43、3. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, users are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below, as may be required by local regulations. For undat
44、ed references, the latest edition of the normative document referred to applies. ISO and IEC maintain registries of currently valid International Standards. 2.1.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and C
45、anada) or 724-776-4970 (outside USA), www.sae.org. SAE J1699-3 Vehicle OBD II Compliance Test Cases SAE J1979-DA J1979-DA, Digital Annex of E/E Diagnostic Test Modes SAE J1939 Serial Control and Communications Heavy Duty Vehicle Network Top-Level Document SAE J1939DA SAE J1939 Digital Annex SAE J193
46、9-1 On-Highway Equipment Control and Communication Network SAE J1939-11 Physical Layer, 250 Kbps, Twisted Shielded Pair SAE J1939-13 Off-Board Diagnostic Connector SAE J1939-14 Physical Layer, 500 Kbps SAE J1939-15 Reduced Physical Layer, 250k Bits/Sec, Un-Shielded Twisted Pair (UTP) SAE J1939-21 Da
47、ta Link Layer SAE J1939-31 Network Layer SAE J1939-71 Vehicle Application Layer SAE J1939-73 Application Layer - Diagnostics SAE J1939-81 Network Management SAE J1939-84 OBD Communications Compliance Test Cases for Heavy Duty Components and Vehicles SAE J1978 OBD II Scan Tool - Equivalent to ISO/DIS
48、 15031-4: December 14, 2001 SAE J1979 E/E Diagnostic Test Modes SAE J2284-2 High Speed CAN (HSC) for Vehicle Applications at 250 Kbps SAE INTERNATIONAL J1939-3 NOV2015 Page 6 of 53 2.2 Government Documents HD OBD and WWH OBD regulations and related information are available at www.arb.ca.gov, www.ep
49、a.gov, eur-lex.europa.eu, and www.unece.org/trans. California Code Regulations, Title 13, Section 1968.2, Malfunction and Diagnostic System Requirements for 2004 and Subsequent Model-Year Passenger Cars, Light-Duty Trucks, and Medium-Duty Vehicles and Engines (OBD II) (California Air Resources Board (CARB) Publications are available from the, Air Resources Board, Haagen-S
