V971201 2031104

Technical Bulletin
Model(s)
Year
Touareg
2003-2004
Eng. Code
Trans. Code
VIN Range From
VIN Range To
All
All
All
3.2L
(BAA)
Condition
97 12 01 October 9, 2012 2031104
Diagnostic Connector - No ECM Communication
Some model year 2003 – 2004 V6 Touareg’s may exhibit a loss of communication through the OBD diagnostic
connector.
Technical Background
The signal ground wire may be missing from pin 5 of the diagnostic connector.
Production Solution
Not Applicable
Service
Procedure
1. Disconnect battery.
2. Remove the under dash covers and loosen the diagnostic connector from under the dash panels.
3. Open approximately 200mm of the harness from behind the diagnostic connector.
4. Insert prefabricated ground terminal P/N 000979011 into position 5 of the diagnostic connector and splice
together with the wire from position 4 approximately 15 – 20 cm from the diagnostic connector.
5. Verify continuity from pins 4 and 5 of the diagnostic connector to the body ground bolt on the A pillar.
6. Re-cover the section of harness opened for the repair.
Page 1 of 2
© 2012 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other
intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice.
No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or
otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the publisher.
Technical Bulletin
7. Re-assemble diagnostic connector and under dash panels.
8. Reconnect battery.
9. Verify communication with tester.
Warranty
Information Only.
Required Parts and Tools
Part Description
Part No:
Quantity
Flat Connector with Retaining
Lug
000979011
1
Tool Description
Tool No:
Wiring Harness Repair Kit
VAS 1978B
Additional Information
All part and service references provided in this Technical Bulletin are subject to change and/or removal.
Always check with your Parts Dept. and Repair Manuals for the latest information.
Page 2 of 2
© 2012 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other
intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice.
No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or
otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the publisher.