ISO INTERNATIONAL STANDARD 27145-4 Second edition 2016-04-01 Road vehicles Implementation of World-Wide Harmonized On- Board Diagnostics (WWH-OBD) communication requirements Part 4: Connection between vehicle and test equipment Vehicules routiers - Mise en application des exigences de communication pour le diagnostic embarqué harmonise a I'échelle mondiale (WWH-OBD) - Partie 4: Connexion entre véhicule et équipement d'essai Reference number ISO 27145-4:2016(E) ISO International Organization for Standardization @ IS0 2016 ed without license from IHS IS0 27145-4:2016(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2016, Published in Switzerland All 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 internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org Licensee-ZHEJIANG INST OF STANDARDIZzRoISQ6- All rights reserved Not for Resale, 2016/6/2 08:44:35 networking permited without license from IHS IS0 27145-4:2016(E) Contents Page Foreword ..V Introduction.. ...vi 1 Scope.. ...1 2 Normative references 3 Terms, definitions and abbreviated terms. 3.1 Terms and definitions. ..2 3.2 Abbreviated terms... 4 Conventions .3 5 Document overview ..3 6 Vehicle and external test equipment connection requirements .4 6.1 Overview .4 6.2 Data link independent requirements 6.3 Support of only one WWH-OBD-compliant external test equipment at a time ..5 7 Wired CAN connection based on IS0 15765-4 .5 7.1 Network scenario requirements. .5 7.2 Initialization sequence .5 7.3 IS027145-3WWH-0BDprotocolvalidationseguence ..5 7.4 Application layer DoCAN. .5 7.4.1 General 7.4.2 Diagnostic protocol communication types. .6 7.4.3 Maximum number of WWH-OBD servers/ECUs ..6 7.4.4 Diagnostic protocol timing parameters. ..6 7.4.5 External test equipment logical addresses .6 7.4.6 Server/ECU logical addressing .6 7.5 Presentation layer... ..6 7.6 Session layer.. 7.7 Transport layer 7 7.7.1 Generalinformation 7.7.2 Mapping of data-link-independent service primitives onto DoCAN data- link-dependent service primitives. ..7 7.7.3 Mapping of T_PDU onto N_PDU for message transmission. 7 7.8 Network layer. .8 7.9 Data link layer. .8 7.10 Physical layer .8 7.11 Diagnostic connector ..8 8 Wired Ethernet connection based on IS0 13400 ..8 8.1 Network scenario requirements ..8 8.2 Initialization sequence. 8.3 IS027145-3WWH-0BD protocolvalidation sequence .12 8.4 Application layer — DolP ..13 8.4.1 General. ..13 8.4.2 Diagnostic protocol communication types ..13 8.4.3 Maximum number of WWH-OBD servers/ECUs ..14 8.4.4 Diagnostic protocol timing parameters . ..14 8.4.5 External test equipment logical addresses ..14 8.4.6 Server/ECU logical addressing ..14 8.5 Presentation layer... 8.6 Session layer ..14 8.7 Transport layer. .. 15 8.7.1 General information .15 ii icensee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 e with ISt ed without license from IHS Not for Resale, 2016/6/2 08:44:35 No reproduction or networking perm