1、BSI Standards PublicationBS ISO 15765-4:2016Road vehicles Diagnosticcommunication over ControllerArea Network (DoCAN)Part 4: Requirements for emissions-relatedsystemsBS ISO 15765-4:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 15765-4:2016.It supersedes
2、BS ISO 15765-4:2011+A1:2013 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee AUE/16, Data Communication (Road Vehicles).A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to
3、include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2016. Published by BSI StandardsLimited 2016ISBN 978 0 580 89344 5ICS 43.040.15Compliance with a British Standard cannot confer immunity fromlegal obligations.This B
4、ritish Standard was published under the authority of theStandards Policy and Strategy Committee on 30 April 2016.Amendments issued since publicationDate Text affectedBS ISO 15765-4:2016 ISO 2016Road vehicles Diagnostic communication over Controller Area Network (DoCAN) Part 4: Requirements for emiss
5、ions-related systemsVhicules routiers Diagnostic sur gestionnaire de rseau de communication (DoCAN) Partie 4: Exigences applicables aux systmes associs aux missionsINTERNATIONAL STANDARDISO15765-4Third edition2016-04-01Reference numberISO 15765-4:2016(E)BS ISO 15765-4:2016ISO 15765-4:2016(E)ii ISO 2
6、016 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2016, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the
7、internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47c
8、opyrightiso.orgwww.iso.orgBS ISO 15765-4:2016ISO 15765-4:2016(E)Foreword vIntroduction vi1 Scope . 12 Normative references 13 Terms, definitions, symbols and abbreviated terms . 23.1 Terms and definitions . 23.2 Symbols . 23.3 Abbreviated terms . 24 Conventions . 35 Document overview. 36 External te
9、st equipment initialization sequence 46.1 General . 46.2 Baudrate validation procedure . 76.2.1 BaudrateRecord 76.2.2 Baudrate validation . 76.2.3 External test equipment error detection provisions 96.3 CAN identifier validation procedure 96.3.1 CAN identifier validation procedure OBD 96.3.2 CAN ide
10、ntifier validation procedure WWH-OBD 117 Application layer .138 Session layer 149 Transport protocol layer .1410 Network layer .1410.1 General 1410.2 Network layer parameters . 1410.2.1 Timing parameter values . 1410.2.2 Definition of Flow Control parameter values .1510.2.3 Maximum number of legisla
11、ted OBD/WWH-OBD ECUs 1610.3 Addressing formats 1710.3.1 Normal and fixed addressing format .1710.3.2 Functional addressing 1710.3.3 Physical addressing 1710.4 CAN identifier requirements 1810.4.1 External test equipment . 1810.4.2 Legislated OBD/WWH-OBD server/ECU .1810.5 Mapping of diagnostic addre
12、sses . 1910.5.1 Legislated OBD/WWH-OBD CAN identifiers 1910.5.2 11 bit CAN identifiers .1910.5.3 29 bit CAN identifiers .2010.6 Support of ECUNAME reporting 2111 Data link layer 2112 Physical layer.2112.1 General 2112.2 External test equipment baudrates 2112.3 External test equipment CAN bit timing
13、2112.3.1 CAN bit timing parameter values . 2112.3.2 Nominal baudrate 250 kBit/s 2212.3.3 Nominal baudrate 500 kBit/s 2312.4 External test equipment 23 ISO 2016 All rights reserved iiiContents PageBS ISO 15765-4:2016ISO 15765-4:2016(E)12.4.1 General. 2312.4.2 CAN interface .2412.4.3 External test equ
14、ipment cable 26Bibliography .27iv ISO 2016 All rights reservedBS ISO 15765-4:2016ISO 15765-4:2016(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally c
15、arried out through ISO 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, governmental and non-governmental, in liaison with ISO, also take part in the wor
16、k. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the diffe
17、rent approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may
18、 be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patent
19、s).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles
20、 in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 22, Road vehicles, Subcommittee SC 31, Data communication.This third edition cancels and replaces the second edition (ISO 15765-4:2011), which ha
21、s been technically revised. It also incorporates the Amendment ISO 15765-4:2011/Amd 1:2013.ISO 15765 consists of the following parts, under the general title Road vehicles Diagnostic communication over Controller Area Network (DoCAN)1): Part 1: General information and use case definition Part 2: Tra
22、nsport protocol and network layer services Part 4: Requirements for emissions-related systems1) ISO 15765-3 Implementation of unified diagnostic services (UDS on CAN) has been withdrawn and replaced by ISO 14229-3 Road vehicles Unified diagnostic services (UDS) Part 3: Unified diagnostic services on
23、 CAN implementation (UDSonCAN) ISO 2016 All rights reserved vBS ISO 15765-4:2016ISO 15765-4:2016(E)IntroductionThis part of ISO 15765 has been established in order to define common requirements for vehicle diagnostic systems implemented on a Controller Area Network (CAN) communication link, as speci
24、fied in ISO 11898. Although primarily intended for diagnostic systems, it also meets requirements from other CAN-based systems needing a network layer protocol.To achieve this, it is based on the Open Systems Interconnection (OSI) Basic Reference Model, in accordance with ISO/IEC 7498-1 and ISO/IEC
25、10731, which structures communication systems into seven layers as shown in Table 1.Table 1 Enhanced and legislated OBD diagnostic specifications applicable to the OSI layersOSI 7 layers aVehicle- manufacturer- enhanced diagnosticsLegislated OBD (on-board diagnostics)Legislated WWH-OBD (on-board dia
26、gnostics)Application (layer 7)ISO 14229-1, ISO 14229-3ISO 15031-5 ISO 27145-3, ISO 14229-1Presentation (layer 6)Vehicle manufacturer specificISO 15031-2, ISO 15031-5, ISO 15031-6, SAE J1930-DA, SAE J1979-DA, SAE J2012-DAISO 27145-2, SAE 1930-DA, SAE J1979-DA, SAE J2012-DA, SAE J1939-DA (SPNs), SAE J
27、1939-73 Appendix A (FMIs)Session (layer 5) ISO 14229-2Transport protocol (layer 4)ISO 15765-2 ISO 15765-2ISO 15765-4ISO 15765-4, ISO 15765-2ISO 27145-4Network (layer 3)Data link (layer 2) ISO 11898-1 ISO 11898-1ISO 15765-4, ISO 11898-1Physical (layer 1)ISO 11898-1, ISO 11898-2, ISO 11898-3, or vehic
28、le manufacturer specificISO 11898-1, ISO 11898-2ISO 11898-1, ISO 11898-2a7 layers according to ISO/IEC 7498-1 and ISO/IEC 10731The application layer services covered by ISO 14229-3 have been defined in compliance with diagnostic services established in ISO 14229-1 and ISO 15031-5, but are not limite
29、d to use only with them.The transport protocol and network layer services covered by this part of ISO 15765 have been defined to be independent of the physical layer implemented, and a physical layer is only specified for legislated on-board diagnostics (OBD).For other application areas, ISO 15765 c
30、an be used with any CAN physical layer.vi ISO 2016 All rights reservedBS ISO 15765-4:2016Road vehicles Diagnostic communication over Controller Area Network (DoCAN) Part 4: Requirements for emissions-related systems1 ScopeThis part of ISO 15765 specifies requirements for Controller Area Networks (CA
31、N) where one or more controllers comply with on-board diagnostics (OBD) or world-wide harmonized on-board diagnostics (WWH-OBD) regulations. The network presumes the use of an external test equipment for inspection and repair diagnostics, as defined by the regulations. The CAN network requirements f
32、or the vehicle and the external test equipment are based on the specifications of ISO 15765-2, ISO 11898-1 and ISO 11898-2.This part of ISO 15765 places restrictions on those International Standards for the fulfilment of the regulations. It does not specify in-vehicle CAN bus architecture, but seeks
33、 to ensure that the vehicles regulated CAN communications comply with external test equipment requirements.This part of ISO 15765 defines the requirements to successfully establish, maintain and terminate communication with a vehicle that implements the requirements of the OBD/WWH-OBD regulations. P
34、lug-and-play communication capabilities among vehicles and test equipment are defined to assure the interoperation of external test equipment and vehicles. This part of ISO 15765 details all of the OSI layer requirements to achieve this goal.This part of ISO 15765 is the entry point for DoCAN (Diagn
35、ostic communication over Controller Area Network). Based on the results of the initialization, the external test equipment determines which protocol and diagnostic services are supported by the vehicles emissions-related system: legislated OBD: ISO 15031 (all parts); legislated WWH-OBD: ISO 27145 (a
36、ll parts).2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including
37、any amendments) applies.ISO 11898-1, Road vehicles Controller area network (CAN) Part 1: Data link layer and physical signallingISO 11898-2, Roadvehicles Controller area network (CAN) Part 2: High-speed medium access unitISO 15031-5, Road vehicles Communication between vehicle and external equipment
38、 for emissions-related diagnostics Part 5: Emissions-related diagnostic servicesISO 15765-2, Road vehicles Diagnostic communication over Controller Area Networks (DoCAN) Part 2: Transport protocol and network layer servicesISO 27145-3, Road vehicles Implementation of World-Wide Harmonized On-Board D
39、iagnostics (WWH-OBD) communication requirements Part 3: Common message dictionaryINTERNATIONAL STANDARD ISO 15765-4:2016(E) ISO 2016 All rights reserved 1BS ISO 15765-4:2016ISO 15765-4:2016(E)ISO 27145-4, Road vehicles Implementation of World-Wide Harmonized On-Board Diagnostics (WWH-OBD) communicat
40、ion requirements Part 4: Connection between vehicle and test equipment3 Terms, definitions, symbols and abbreviated terms3.1 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 15765-2 apply.3.2 SymbolsSymbol Definition UnitCAC1, CAC2capacitance of a.c. ter
41、mination FCCAN_Hcapacitance between CAN_H and ground potential FCCAN_Lcapacitance between CAN_L and ground potential FCDIFFcapacitance between CAN_H and CAN_L Ff oscillator tolerance HzlCABLEmaximum cable length between OBD/WWH-OBD connector and external test equipmentmProp_Seg propagation segmentPh
42、ase_Seg1 phase segment 1Phase_Seg2 phase segment 2RAC1, RAC2resistance of a.c. termination Sync_Seg synchronization segmenttBITbit time stBIT_RXreceive bit time stBIT_TXtransmit bit time stCABLEexternal-test-equipment cable propagation delay (without external test equipment CAN interface delay)stSEG
43、1timing segment 1 stSEG2timing segment 2 stSJWresynchronization jump width stSYNCSEGsynchronization segment stTOOLexternal test equipment CAN interface propagation delay (without external test equipment cable delay)stQtime quantum s3.3 Abbreviated termsBS block sizeCAN controller area networksCF con
44、secutive frameDLC data length codeDoCAN diagnostic communication over CANECU electronic control unitECM engine control moduleFC flow controlFF first frameFS flow status2 ISO 2016 All rights reservedBS ISO 15765-4:2016ISO 15765-4:2016(E)OBD on-board diagnosticsSA source addressSF single frameSJW sync
45、hronization jump widthSP nominal sample pointTA target addressTCM transmission control moduleWWH-OBD world-wide harmonized on-board diagnostics4 ConventionsISO 15765 is based on the conventions specified in the OSI Service Conventions (ISO/IEC 10731:1994) as they apply for diagnostic services.5 Docu
46、ment overviewFigure 1 illustrates the most applicable application implementations utilizing the DoCAN protocol. ISO 2016 All rights reserved 3BS ISO 15765-4:2016ISO 15765-4:2016(E)Figure 1 Diagnostic communication over CAN document reference according to OSI model6 External test equipment initializa
47、tion sequence6.1 GeneralThe external test equipment shall support the initialization sequence specified in this part of ISO 15765 (see Figure 2).4 ISO 2016 All rights reservedBS ISO 15765-4:2016ISO 15765-4:2016(E)The purpose of the external test equipment initialization sequence is to automatically
48、detect whether the vehicle supports legislated OBD or WWH-OBD on CAN using the physical layer specified in Clause 12.Furthermore, the initialization sequence determines the communication compliance status of vehicles by analysing their responses to ISO 15031-5 service 01160016(PID supported) request
49、s, or ISO 27145-3 service 2216F8161016(DID protocol identification) request with a positive response.Only vehicles that follow the WWH-OBD regimen will have ECUs that reply to the functional request service 2216DID F81016for protocol identification. Vehicles that respond only to the functional request service 0116PID 0016support earlier OBD communication methods. Vehicles that do not respond to either request do not support regulated OBD diagnostics under this part of ISO 15765. 6.3 d
