ISO INTERNATIONAL STANDARD 15031-4 Second edition 2014-02-15 Road vehicles Communication between vehicle and external equipment for emissions-related diagnostics - Part 4: External test equipment Vehicules routiers - Communications entre un veéhicule et un équipement externe pour le diagnostic relatif aux émissions Partie 4: Equipement d'essai externe Reference number IS015031-4:2014(E) LSO @ IS0 2014 I without license from IHS Not for Resale IS0 15031-4:2014(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2014 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 Case postale 56:CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyright@iso.org Web www.iso.org Published in Switzerland @ IS0 2014 - All rights reserved No reproductic networking permited without license from IHS Not for Resale IS0 15031-4:2014(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references 3 Terms, definitions, symbols, and abbreviated terms ..2 3.1 Terms and definitions . 2 3.2 Abbreviated terms . .2 3.3 Symbols .3 4 Conventions ..3 5 Document overview .3 6 Required functions of the external test equipment ..5 7 Communication protocols 8 Connections to the vehicle ..5 9 Network access ..6 9.1 Automatic determination of communication interface .6 9.2 Multiple tester communication .7 9.3 Handling of no response from the vehicle ..8 9.4 Handling of multiple responses from the vehicle .8 9.5 Message structure .9 9.6 Diagnostic trouble codes monitoring 9 9.7 Obtaining and displaying OBD emissions-related current data, freeze frame data, and test parameters and results. 9 9.8 Code clearing 10 9.9 On-board diagnostic evaluation .10 9.10 Use of StopCommunication service associated with IS0 14230-4 (optional) ..10 10 User interface ..10 10.1 Display. ..10 10.2 User input. ..11 11 Power requirements ..11 11.1 Vehicle battery voltage support ..11 11.2 Vehicle battery current consumption ..12 12 Electromagnetic compatibility (EMC) ..12 13 Conformance testing .12 Annex A (informative) Recommended external test equipment common user interface displays.13 Annex B (normative) Initialization and identification of IS0 14230-4/IS0 9141-2 protocols. ...26 Bibliography .31 iii se with IS ed without license from IHS Not for Resale