A231740 2036668-
Service Bulletin Details
Public Details for: A231740 2036668-
This informational bulletin contains diagnosis instructions for the n290 fuel metering valve.
- 2017 - 2016 - 2015 - 2014 - 2013 -
Models from 2017
| 2017 AUDI Q5 |
Models from 2016
| 2016 AUDI A6 |
| 2016 AUDI A7 |
| 2016 AUDI A8 |
| 2016 AUDI Q5 |
Models from 2014
| 2014 AUDI A6 |
| 2014 AUDI A7 |
| 2014 AUDI Q5 |
| 2014 AUDI Q7 |
Models from 2013
| 2013 AUDI A3 |
| 2013 AUDI A8 |
| 2013 AUDI Q7 |
23 MIL on, rough running, no start (DTCs P0087, P0088, and/or P0191) (TDI only) 23 17 40 2036668/4 March 29, 2017. Supersedes Technical Service Bulletin Group 23 number 15-35 dated June 30, 2015 for reasons listed below. Model(s) Year VIN Range Vehicle-Specific Equipment A3 2013, 2015 All TDI clean diesel A6 2014, 2016 All TDI clean diesel A7 2014 - 2016 All TDI clean diesel A8 2013, 2016 All TDI clean diesel Q5 2014 - 2017 All TDI clean diesel Q7 2013 - 2015 All TDI clean diesel Condition REVISION HISTORY Revision Date Purpose 4 - Revised header data (Added model years 2014 - 2016 and models A6, A7, Q5) 3 06/30/2015 Revised header data (Removed model years 2009 - 2012; added model years 2015 - 2016) Revised title (Updated service number) 2 03/20/2014 Revised title Revised Technical Background (Updated information) Revised Service (Updated Tip at end of section) MIL on. No start or rough running. One or more of the following DTCs is stored in the engine control module, J623 (address word 0001): DTC P0087 (Fuel Rail/System Pressure - Too Low) DTC P0088 (Fuel Rail/System Pressure - Too High) Page 1 of 6 © 2017 Audi 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 Audi 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. DTC P0191 (Fuel Rail Pressure Sensor "A" Circuit Range/Performance) Technical Background When diagnosing a MIL on, no-start, or rough running concern on a common rail diesel vehicle, and no root cause is found after checking all other components and following all GFF diagnostic procedures, it may be necessary to check for metallic particles in the High Pressure Fuel Pump. Production Solution No production change required. Service Note: Removing the N290 fuel metering valve to inspect for metallic particles should only be considered as a last step after all GFF diagnostic procedures have been performed, including testing supply volume to the high pressure fuel pump (low pressure side) and checking for internal leakage from the injectors and N276 pressure regulating valve. Note: Before the N290 fuel metering valve is removed, the area surrounding the valve (Figure 1) must be sprayed with a cleaner and dried with compressed air to ensure that all debris is removed from the area. Fuel system components may be damaged if any debris enters the fuel system. Figure 1. Area surrounding the valve. Page 2 of 6 © 2017 Audi 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 Audi 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. 1. Remove the N290 fuel metering valve and inspect the valve and valve bore for the presence of metallic particles (Figure 2). Proceed with the appropriate section below. Figure 2. Fuel metering valve and valve bore with metallic particles (A), and without metallic particles (B). If metallic particles are found on the N290 fuel metering valve or in the valve bore: 1. Contact the Audi Technical Assistance Center (TAC) and open a TAC ticket before continuing with the repair. Before contacting TAC, attach the following to the TAC ticket: GFF diagnostic log Clear pictures showing the metallic particles in the N290 fuel metering valve and bore (Figure 3 and Figure 4). Figure 3. Example of a clear picture showing the metallic particles in the N290 fuel metering valve. Page 3 of 6 © 2017 Audi 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 Audi 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. Figure 4. Example of a clear picture showing the metallic particles in the valve bore. Note: If a fuel system replacement is necessary, ensure that the fuel injector return line is properly seated and sealed once installed. Inspect for seepage at the fuel injector return line connector after the test drive. If seepage is found, the condition must be corrected. Tip: Be sure to include the 7-digit technical service bulletin number in the repair order comments. If metallic particles are not found on the N290 fuel metering valve or in the valve bore: 1. Do NOT replace the high pressure fuel pump. Page 4 of 6 © 2017 Audi 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 Audi 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. Note: To prevent fuel system damage, ensure that the N290 fuel metering valve is free of contaminants before reinstalling. Additionally, ensure that neither O-ring (Figure 5) is damaged. If either O-ring is damaged, replace the high fuel pressure pump. To prevent damaging the O-rings when reinstalling the N290 fuel metering valve, lubricate them with diesel fuel. Figure 5. N290 fuel metering valve O-rings. 2. Use light pressure to reinstall the N290 fuel metering valve into the valve bore. 3. Install and hand tighten both M5 fasteners, ensuring that the threads are clean and dry. Pre-tighten to 2 Nm, then to 6.5 – 7 Nm. 4. Use a paint marker or equivalent to mark the top of the N290 fuel metering valve with a white dot (Figure 6). Figure 6. White dot on N290 fuel metering valve. 4. Continue with diagnosis. Page 5 of 6 © 2017 Audi 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 Audi 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. Tip: Be sure to include the 7-digit technical service bulletin number in the repair order comments. All TDI clean diesel high pressure fuel pumps that have been replaced in conjunction with this Technical Service Bulletin will be requested for return. These replacement parts will be reviewed to verify the presence of metallic particles on the N290 metering valve and within the bore to ensure that the submitted part matches the information submitted with the ATA. Warranty This bulletin is informational only, and is not applicable to any Audi Warranty. Additional Information All parts and service references provided in this TSB (2036668) are subject to change and/or removal. Always check with your Parts Department and service manuals for the latest information. ©2017 Audi 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 Audi 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. Page 6 of 6 © 2017 Audi 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 Audi 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.