NHTSA ID Number: 10171335
Manufacturer Communication Number: A3720922058450_1
TSB/Document Date: 2020-03-05
Summary
This bulletin contains repair instructions for scuffing or rubbing on the transmission harness that can cause a multitude of DTCs to appear.
37 Transmission malfunction, DTC P17F600, P17F500, P17F400, P18C400, U008000, and/or U010100 in the
TCM or ECM
37 20 92 2058450/1 February 10, 2020.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
A6, A7
2019 - 2020
All
Not Applicable
Condition
Customer states:
One or more of the following customer statements may be present:
A transmission malfunction indicator is displayed in the instrument cluster.
Multiple other warnings might be displayed in the instrument cluster.
The parking lock cannot be engaged or disengaged.
A drive position is unable to be selected.
The fuse has blown for the transmission control module (TCM), J217 (address word 0002).
Workshop findings:
The customer concern can often be re-produced while manipulating the transmission harness near the cross
brace.
One or more of the following DTCs may be stored in the TCM, J217 (address word 0002):
DTC P17F600 (Parking lock solenoid Electrical error).
DTC P17F500 (Parking lock solenoid Open circuit).
DTC P17F400 (Parking lock solenoid Short circuit to ground).
DTC P18C400 (parking lock solenoid, implausible signal).
DTC U008000 (Vehicle Communication Bus F).
The following DTC may be stored in the engine control module (ECM), J623 (address word 0001):
DTC U010100 (Lost Communication with TCM).
The following DTC may be stored in the data bus diagnostic interface, J533 (address word 0019):
DTC U11B000 (FlexRay data bus branch 2 faulty) as sporadic or static.
DTC U112100 (Data bus missing message).
Page 1 of 14
© 2020 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.
Technical Background
Due to routing deviations during production, the transmission harness may come in contact with the transmission
crossmember and chafe over time.
OR
The body harness containing the FlexRay circuit to the transmission may rub against the mounting bracket of the
driver assist systems control module, J1121 (address word 00A5).
Production Solution
Optimized transmission wiring harness and routing implemented in production.
Service
Before starting repairs, ensure the faults, symptoms and customer concern apply before proceeding. If the
customer concern is related to the transmission harness chaffing, the symptoms or faults can usually be
duplicated while moving the wire harness.
Inspection of the transmission and body harness:
1. Thoroughly inspect the
transmission and body side
wiring harness and routing
near the areas depicted in
Figures 1 and 2.
Note: Harness damage
can be very subtle. Even a
light chafing of the harness
wrap can cause DTCs.
Figure 1. Common areas for harness damage. Also depicted is the original
routing concept.
Page 2 of 14
© 2020 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 2. Body harness inspection near the area of transmission connector.
2. If there is no damage found as described above and/or the harness rework as described below has already
been performed, proceed with standard diagnosis and repair procedures.
If there is no damage found and DTC
U11B000 (FlexRay data bus branch 2
faulty) is stored, inspect for chafing
near the J1121 mounting bracket
shown in Figure 3.
Note: If damage is found as
shown in Figure 3, please create a
TAC case, include photos, and a
clear description of your findings.
Figure 3. The area where the body harness may rub.
Page 3 of 14
© 2020 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:
The J1121 is located under the driver’s seat. For this reason, thoroughly inspect the harness as described in step
1 before inspecting the location in Figure 3.
3. If the customer concern, faults and damage are found as described above in step 1, proceed with the
remainder of this TSB.
Transmission harness repair and re-work instructions:
1. Repair the damaged
sections of the
transmission or body
harness as needed per
the repair manual
(Figure 4).
Note: Ensure the
repairs are staggered
as needed to avoid
large bunches in the
harness or that repairs
are not made at critical
flex points.
Figure 4. Close-up of transmission harness rub through against the transmission brace.
2. Remove the
transmission harness
from the vehicle.
Measure 195mm from
the forward branch
towards the rear of the
transmission harness.
Fit a new clip, part
number N 106 598 01
at this location (Figure
5).
Figure 5. New clip fitted 195mm from the forward branch of the transmission harness.
Page 4 of 14
© 2020 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.
3. Measure 200mm
from the center of the
newly fitted clip
towards the rear of the
harness. Install a new
clip with part number N
106 598 01 at this
location
The opening of both
clips should point in the
same direction as the
original clips (Figure 6).
The old clips can now
be removed.
Figure 6. Second new clip shown installed near the rear of the transmission harness.
Tip:
It is helpful to mark the harness with a yellow tire crayon at the location to install the new cable ties. This way, the
cable tie can be left slightly loose and then tightened at the end of the procedure. This will aid in orientation of the
harness.
4. Add the 100mm
protective sleeve, part
number N 108 705 01
to the transmission
harness.
Place the sleeve 10mm
from the new rear clip
then fully wrap the
sleeve with tape N 105
920 02.
Figure 7. Installation location of protective sleeve.
Page 5 of 14
© 2020 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.
Wrap the sleeve up to
the rear branch of the
transmission harness
between the green
lines (Figure 8).
A moderate to firm
pressure should be
used while wrapping
the harness.
Figure 8. Protective sleeve and final wrapping.
Transmission cross brace deburring:
1. Using a half-round
file, lightly chamfer and
smooth out the
transmission cross
brace at the locations
indicated by the red
line in Figure 9.
Note: Cross
brace is shown
removed for clarity, do
not remove the brace
during service.
Figure 9. Red line depicts areas to be de-burred.
Page 6 of 14
© 2020 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.
2. Avoid removing
excessive amounts of
material or deforming
the cross brace during
re-work.
Ensure the areas at the
red lines in Figure 9
are smooth and free of
any burrs before
proceeding.
Tip:
It is not necessary to
remove the
transmission harness
connector bracket
when using the half
round file.
Figure 10. Deburring of the transmission cross brace.
Transmission Harness Routing:
1. Route the
transmission harness
back over the cross
brace.
Reconnect the forward
connectors of the
transmission harness
Note:
Cross brace is shown
removed for clarity, do
not remove the brace
during service.
Figure 11. New harness routing and clip locations.
Page 7 of 14
© 2020 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.
2. Secure the cable
with the newly attached
clips (Figures 11–13).
Front clip attachment
point on the cross
brace (Figure 12).
Figure 12. Attachment point of forward clip.
Page 8 of 14
© 2020 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.
3. Attach the rear clip
to the cross brace at
the location (Figure
13).
Figure 13. New routing and clip location.
Page 9 of 14
© 2020 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.
4. Install both
transmission harness
connectors into the
brackets.
Ensure the harness is
routed as depicted in
Figure 14.
Figure 14. New transmission harness routing.
5. Install harness clip
3D0 971 838 L to the
transmission wiring
harness.
Attach the new clip to
the bottom center of
the connector bracket.
Tip:
Install the clip at the
central point of the
connector bracket first,
position the harness
and then tighten the
cable tie. This will aid
in orientation of the
harness.
Figure 15. Installation of clip 3D0 971 838 L.
Page 10 of 14
© 2020 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.
Body harness re-work:
Additional insulation is needed on the body side of the transmission harness.
1. Install approximately
130mm of corrugated
pipe N 107 327 01 to
both ends of the body
harness sections that
connect to the
transmission harness
(Figure 16).
Figure 16. Corrugated pipe N 107 327 01 added to body harness.
Page 11 of 14
© 2020 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.
2. Using harness tape
N 105 920 02, wrap
both corrugated tubes
to the body harness
leaving a gap between
the windings (Figure
17).
Ensure the pipe is fixed
to the harness with the
tape to prevent the
tube from sliding on the
harness.
Ensure the body
harness is routed as
depicted in Figure 17.
Tip:
Double check that all
cable ties are tight
before returning the
vehicle to the
customer.
Figure 17. Fully wrapped corrugated tub and final harness routing.
Warranty
Claim Type:
110 up to 48 Months/50,000 Miles.
G10 for CPO Covered Vehicles – Verify Owner.
If the vehicle is outside any warranty, this Technical Service Bulletin is informational
only.
Service Number:
9781
Damage Code:
0024
Labor Operations:
Remove and install noise insulation
1082 1900
See SRT
Central wiring harness repair
9709 41XX
See SRT
(depends on
number of wire
repairs needed)
Page 12 of 14
© 2020 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.
Diagnostic Time:
Claim Comment:
Repair wiring harness for gearbox control unit
9781 4199
80 TU
GFF
0150 0000
Time stated on
the diagnostic
protocol (Max 50
TU)
Road test prior to the service procedure
0121 0002
10 TU
Road test after the service procedure
0121 0004
10 TU
As per TSB #2058450/1
All warranty claims submitted for payment must be in accordance with the Audi
Warranty Policies and Procedures
Manual. Claims are subject to review or audit by Audi
Warranty.
Required Parts and Tools
The part numbers mentioned in this TSB are different than the ones listed in ETKA. Only use parts listed in this
TSB, this includes superseding part numbers!
Part Number
Part Description
Quantity
See ETKA
Fasteners, Bolts, Nuts, and Screws as needed per the
Repair Manual
See ETKA/ELSA
N10659801
Harness Clip
02
3D0971838L
Harness Clip
01
N10870501
Protective Sleeve
01
N10592002
2000mm
N10732701
Corrugated Pipe
130mm
Additional Information
All parts and service references provided in this TSB (2058450) are subject to change and/or removal.
©2020 Audi
of America, Inc. All rights reserved. The 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
Page 13 of 14
© 2020 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.
these materials be modified or reposted to other sites without the prior expressed written permission of the
publisher.
Page 14 of 14
© 2020 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.
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TSB/Document ID: A3720922058450_1
Replacement Service Bulletin Number:
MFR Communication Date: 2020-02-10
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: POWER TRAIN
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