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    1. Senior Member PowerDubs's Avatar
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      05-16-2017 02:39 PM #1
      I'm hoping the mods will let this stay- as I am throwing up a distress flag for help quickly!!

      I know there is a Mk2 TT specific forum but it is dead. And this isn't an engine oriented problem so the technical forum won't help either.

      2008 TT 3.2 awd stick

      My wife tried to start her car to go to work this morning. She came back into me and said the car was freaking out.

      She tried to start it- said every light on the dash came on, beeping, the trunk spoiler went up on its own, etc.


      The car cranks over fine, but won't start. The dash is going nuts with lights and messages. Telling me to push in the clutch to start when I already am, telling me the brakes have a fault and to drive carefully to nearest workshop.

      I scanned with vagcom and basically got every possible code in the book. I cleared and they just come back. Most say unable to connect or can not be reached.

      I bought a new battery as a first step- swapped it and no change in behavior.

      No idea where to start but as you can imagine, I need to fix this so she can get to work.

      Total system meltdown. Question is- what controls everything on this car?











      Sent from my iPhone using Tapatalk
      -Josh

      1-12-5-8-3-10-6-7-2-11-4-9

    2. Member GLI Dan's Avatar
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      05-16-2017 02:45 PM #2
      http://www.ttforum.co.uk/forum/viewt...37036&start=30

      Guy in that thread seemed to have been throwing the same codes and it wound up being a faulty relay. I believe that makes sense. There are so many codes for various parts of the car that it isn't something mechanical its an electrical/communication issue with the computer that controls those components.
      Quote Originally Posted by DzlDub View Post
      Cars are ****ing awesome, anyone who doesn't want a car is a communist.
      Disclaimer: Generally, I strongly dislike people.
      Prior Vehicles: MkIV GLI - e46 330ci

    3. Forum Sponsor TyrolSport's Avatar
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      05-16-2017 04:46 PM #3
      check canbus
      Last edited by TyrolSport; 05-18-2017 at 01:08 PM.

    4. Member
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      05-16-2017 05:16 PM #4
      Seems like all the control modules that cannot be reached are on the powertrain communication network, or at least most of them. Any recent work/repairs? Have access to wire diagrams? Have an oscilloscope to check if powertrain communication is reaching the gateway control module?

      What are the DTCs in the control modules that can be reached?

    5. Member TurboREX's Avatar
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      05-16-2017 05:17 PM #5
      ignition switch? I know the 2.8L VR throws an electrical $hit fit when the ignition switch is going bad, maybe the same with the 3.2L?

    6. Senior Member PowerDubs's Avatar
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      05-16-2017 05:18 PM #6
      Dan- thanks for the suggestion. I was hopeful that it would work- but I just pulled the dash apart and tested the 460 relay. It is fine.

      Anyone have any other ideas on what I can test myself in my driveway? I'd hate to have to have it towed to a dealer for them to throw a pile of parts at it until something works.
      -Josh

      1-12-5-8-3-10-6-7-2-11-4-9

    7. Senior Member PowerDubs's Avatar
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      05-16-2017 05:21 PM #7
      Quote Originally Posted by Audi_Mechanic View Post
      Seems like all the control modules that cannot be reached are on the powertrain communication network, or at least most of them. Any recent work/repairs? Have access to wire diagrams? Have an oscilloscope to check if powertrain communication is reaching the gateway control module?

      What are the DTCs in the control modules that can be reached?

      No repairs ever outside of a serp belt tensioner that grenaded. No scope.

      I'll do a full scan and post it up.
      -Josh

      1-12-5-8-3-10-6-7-2-11-4-9

    8. Senior Member PowerDubs's Avatar
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      05-16-2017 05:27 PM #8
      Quote Originally Posted by TurboREX View Post
      ignition switch? I know the 2.8L VR throws an electrical $hit fit when the ignition switch is going bad, maybe the same with the 3.2L?

      The switch appears to be working correctly.


      Problem with computers is they can do weird things on networks.

      My Mk4 R32 had a haldex controller go bad- and the car threw a million different codes. Unplugged it and everything went back to normal.

      Back when I was a computer tech at a college- we lost internet in an entire multistory building. Couldn't figure it out. Finally we unplugged each floor at the server room until we found what floor was causing the problem- then unplugged each classroom on that floor to narrow it down- then each row of PC in that room and then each PC. Ended up being a single computer had a bad network card- brought down the whole building. 2 minute fix that took us all night (after midnight) to find...

      Worst part is- compared to cars- that was easy.
      -Josh

      1-12-5-8-3-10-6-7-2-11-4-9

    9. Member cuppie's Avatar
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      05-16-2017 05:52 PM #9
      You'll also get help if you post this in the Vag-Com forum here. FYI: Posting the full Auto-scan is required there.
      (it would help here, too - a lot more info than just that phone pic. )
      - Cup
      '88 Scirocco 16v, 'tastefully' modified.
      Click here for my Cincy pics
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    10. Senior Member PowerDubs's Avatar
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      05-16-2017 05:54 PM #10
      VCDS Version: Release 14.10.2 (x64)
      Data version: 20150311
      www.Ross-Tech.com

      Tuesday,16,May,2017,17:47:03:46067

      Chassis Type: 8J (1K0)
      Scan: 01 03 08 09 0F 14 15 16 17 19 22 25 37 42 44 46 47 52 55 56
      65 77

      VIN: TRUDD38J781002778 Mileage: 168480km-104688miles

      01-Engine -- Status: Cannot be reached 1100
      03-ABS Brakes -- Status: Cannot be reached 1100
      04-Steering Angle -- Status: Cannot be reached 1100
      08-Auto HVAC -- Status: Malfunction 0010
      09-Cent. Elect. -- Status: Malfunction 0010
      0F-Digital Radio -- Status: Malfunction 0010
      14-Susp. Elect. -- Status: Cannot be reached 1100
      15-Airbags -- Status: Cannot be reached 1100
      16-Steering wheel -- Status: OK 0000
      17-Instruments -- Status: OK 0000
      19-CAN Gateway -- Status: Malfunction 0010
      22-AWD -- Status: Cannot be reached 1100
      25-Immobilizer -- Status: OK 0000
      37-Navigation -- Status: Malfunction 0010
      42-Door Elect, Driver -- Status: OK 0000
      44-Steering Assist -- Status: Cannot be reached 1100
      46-Central Conv. -- Status: Malfunction 0010
      47-Sound System -- Status: Malfunction 0010
      52-Door Elect, Pass. -- Status: OK 0000
      55-Headlight Range -- Status: Cannot be reached 1100
      56-Radio -- Status: Malfunction 0010
      65-Tire Pressure -- Status: Malfunction 0010
      77-Telephone -- Status: OK 0000

      -------------------------------------------------------------------------------
      Address 01: Engine
      Cannot be reached

      -------------------------------------------------------------------------------
      Address 03: ABS Brakes
      Cannot be reached

      -------------------------------------------------------------------------------
      Address 08: Auto HVAC Labels: None
      Part No SW: 8J0 820 043 AA HW: 8J0 820 043 AA
      Component: J255 Klima 1 Zone 0060
      Revision: 00H07003 Serial number: 00000001026113
      Coding: 1048614
      Shop #: WSC 01236 785 00200
      VCID: 65CABC28ACD23509FD9-8030

      2 Faults Found:
      01314 - Engine Control Module
      008 - Implausible Signal
      Freeze Frame:
      Fault Status: 01101000
      Fault Priority: 5
      Fault Frequency: 1
      Reset counter: 204
      Mileage: 168486 km
      Time Indication: 0
      Date: 2017.05.16
      Time: 09:00:15

      01206 - Signal for Duration of Ignition Off Time
      008 - Implausible Signal
      Freeze Frame:
      Fault Status: 01101000
      Fault Priority: 7
      Fault Frequency: 1
      Reset counter: 204
      Mileage: 168486 km
      Time Indication: 0
      Date: 2017.05.16
      Time: 00:00:23


      -------------------------------------------------------------------------------
      Address 09: Cent. Elect. Labels: 8P0-907-279-23-H.lbl
      Part No SW: 8P0 907 279 H HW: 8P0 907 279 H
      Component: Bordnetz-SG H46 1802
      Revision: 00H46000 Serial number: 00000006851361
      Coding: F1041E83C0141C0003180000180000000028EE075A250802
      Shop #: WSC 01236 785 00200
      VCID: 428047B41D3C223138B-8017

      Subsystem 1 - Part No: 8J1 955 119 Labels: 1KX-955-119.CLB
      Component: Wischer AU354 H06 0060
      Coding: 00064784
      Shop #: WSC 01236

      Subsystem 2 - Part No: 4E0 910 557 A Labels: 8K0-955-559.CLB
      Component: REGENLICHTSENSORH13 0090
      Coding: 00149804
      Shop #: WSC 01236

      3 Faults Found:
      01321 - Control Module for Airbags (J234)
      004 - No Signal/Communication
      Freeze Frame:
      Fault Status: 01100100
      Fault Priority: 2
      Fault Frequency: 1
      Reset counter: 204
      Mileage: 168486 km
      Time Indication: 0
      Date: 2017.05.16
      Time: 00:05:00

      Freeze Frame:
      ON
      Voltage: 12.20 V
      OFF
      ON
      OFF
      OFF
      OFF

      01314 - Engine Control Module
      004 - No Signal/Communication
      Freeze Frame:
      Fault Status: 01100100
      Fault Priority: 2
      Fault Frequency: 1
      Reset counter: 204
      Mileage: 168486 km
      Time Indication: 0
      Date: 2017.05.16
      Time: 00:05:00

      Freeze Frame:
      ON
      Voltage: 12.20 V
      OFF
      ON
      OFF
      OFF
      OFF

      01309 - Power Steering Control Module (J500)
      004 - No Signal/Communication
      Freeze Frame:
      Fault Status: 01100100
      Fault Priority: 2
      Fault Frequency: 1
      Reset counter: 204
      Mileage: 168486 km
      Time Indication: 0
      Date: 2017.05.16
      Time: 00:05:00

      Freeze Frame:
      ON
      Voltage: 12.20 V
      OFF
      ON
      OFF
      OFF
      OFF


      -------------------------------------------------------------------------------
      Address 0F: Digital Radio Labels: 8E0-035-593-SIR.lbl
      Part No SW: 8E0 035 593 H HW: 8E0 035 593 H
      Component: SDAR SIRIUS H06 0080
      Revision: 00000000 Serial number: AUZ4Z7G0070587
      Shop #: WSC 00000 000 00000
      VCID: 2E580304B9A4B651CC3-807B

      1 Fault Found:
      02635 - Tuner Not Enabled/Activated
      000 - -
      Freeze Frame:
      Fault Status: 01100000
      Fault Priority: 7
      Fault Frequency: 29
      Reset counter: 185
      Mileage: 167369 km
      Time Indication: 0
      Date: 2017.04.26
      Time: 06:29:03


      -------------------------------------------------------------------------------
      Address 14: Susp. Elect.
      Cannot be reached

      -------------------------------------------------------------------------------
      Address 15: Airbags
      Cannot be reached

      -------------------------------------------------------------------------------
      Address 16: Steering wheel Labels: 8P0-953-549-F.lbl
      Part No SW: 8P0 953 549 F HW: 8P0 953 549 F
      Component: J0527 H36 0070
      Coding: 0004041
      Shop #: WSC 01236 785 00200
      VCID: 418248B8183A3929211-8014

      Subsystem 1 - Part No: XXXXXXXXXXX
      Component: E0221 H06 0030

      No fault code found.

      -------------------------------------------------------------------------------
      Address 17: Instruments Labels: 8J0-920-xxx-17-MY7.lbl
      Part No SW: 8J0 920 990 C HW: 8J0 920 990 C
      Component: KOMBIINSTR. VDO H21 0070
      Revision: D0H21004 Serial number: 2242G004003811
      Coding: 0117268
      Shop #: WSC 43273 067 57207
      VCID: 32601774AD9C92B1A8B-8067

      No fault code found.

      -------------------------------------------------------------------------------
      Address 19: CAN Gateway Labels: 1K0-907-530-V2.clb
      Part No SW: 1K0 907 530 K HW: 1K0 907 951
      Component: J533__Gateway H12 0170
      Revision: H12 Serial number: 33001073300203
      Coding: FD8F03EA27004100
      Shop #: WSC 01236 785 00200
      VCID: 2F661E00BEAEBF59C75-807A

      1 Fault Found:
      01312 - Powertrain Data Bus
      014 - Defective
      Freeze Frame:
      Fault Status: 01101110
      Fault Priority: 1
      Fault Frequency: 6
      Reset counter: 204
      Mileage: 168486 km
      Time Indication: 0
      Date: 2017.05.16
      Time: 09:00:11


      -------------------------------------------------------------------------------
      Address 22: AWD
      Cannot be reached

      -------------------------------------------------------------------------------
      Address 25: Immobilizer Labels: 1K0-920-xxx-25.clb
      Part No SW: 8J0 920 990 C HW: 8J0 920 990 C
      Component: KOMBIINSTR. VDO H21 0070
      Revision: D0H21004 Serial number: AUX7Z0G2FNT0OS
      Shop #: WSC 00000 000 00000
      VCID: 32601774AD9C92B1A8B-8067

      No fault code found.

      -------------------------------------------------------------------------------
      Address 37: Navigation Labels: 8E0-035-192-RNSE.lbl
      Part No SW: 8J0 035 192 B HW: 8J0 035 192 B
      Component: RNS-E US3 H10 0150
      Revision: 01S Serial number: AUZBZ7G3800895
      Coding: 0619637
      Shop #: WSC 08353 444 54433
      VCID: 2854F51C9B40E86106F-807D

      1 Fault Found:
      01316 - ABS Control Module
      004 - No Signal/Communication
      Freeze Frame:
      Fault Status: 01100100
      Fault Priority: 5
      Fault Frequency: 1
      Reset counter: 204
      Mileage: 168486 km
      Time Indication: 0
      Date: 2017.05.16
      Time: 09:00:31

      Freeze Frame:
      Bin. Bits: 0010
      Mileage: 168480 km
      Count: 1605
      Clock: 09:00


      -------------------------------------------------------------------------------
      Address 42: Door Elect, Driver Labels: 8P0-959-801-MAX1.lbl
      Part No: 8J8 959 801 C
      Component: Tuer-SG H02 0060
      Coding: 0001077
      Shop #: WSC 01236 785 00200
      VCID: 3D7A344864C25DC9459-8068

      No fault code found.

      -------------------------------------------------------------------------------
      Address 44: Steering Assist
      Cannot be reached

      -------------------------------------------------------------------------------
      Address 46: Central Conv. Labels: 8J0-959-433.lbl
      Part No: 8J0 959 433 A
      Component: KSG H08 0070
      Coding: 9B90328201382D290F0FC88A0477
      Shop #: WSC 01236 785 00200
      VCID: 346C116C57889C81BA7-8061

      Subsystem 1 - Part No: 1K0 951 605 C
      Component: LIN BACKUP HORN H03 1301

      Subsystem 2 - Component: NGS n.mounted

      Subsystem 3 - Component: IRUE n.mounted

      2 Faults Found:
      00625 - Vehicle Speed Signal
      004 - No Signal/Communication
      01321 - Control Module for Airbags (J234)
      004 - No Signal/Communication

      -------------------------------------------------------------------------------
      Address 47: Sound System Labels: 8J0-035-223.lbl
      Part No SW: 8J0 035 223 C HW: 8J0 035 223 C
      Component: J525 Amp High H04 0110
      Revision: PROD_01 Serial number: 00000000009708
      Coding: 0246116
      Shop #: WSC 01236 785 00200
      VCID: 244CE12CE7680C012A7-8071

      1 Fault Found:
      01316 - ABS Control Module
      004 - No Signal/Communication
      Freeze Frame:
      Fault Status: 01100100
      Fault Priority: 6
      Fault Frequency: 9
      Reset counter: 204
      Mileage: 168486 km
      Time Indication: 0
      Date: 2017.05.16
      Time: 09:00:11


      -------------------------------------------------------------------------------
      Address 52: Door Elect, Pass. Labels: 8P0-959-802-MAX1.lbl
      Part No: 8J8 959 802 C
      Component: Tuer-SG H02 0060
      Coding: 0001077
      Shop #: WSC 01236 785 00200
      VCID: 3E78334469C446D15C3-806B

      No fault code found.

      -------------------------------------------------------------------------------
      Address 55: Headlight Range
      Cannot be reached

      -------------------------------------------------------------------------------
      Address 56: Radio Labels: 8E0-035-192-RNSE.lbl
      Part No SW: 8J0 035 192 B HW: 8J0 035 192 B
      Component: RNS-E US3 H10 0150
      Revision: 01S Serial number: AUZBZ7G3800895
      Coding: 0619637
      Shop #: WSC 08353 444 54433
      VCID: 2854F51C9B40E86106F-807D

      1 Fault Found:
      01316 - ABS Control Module
      004 - No Signal/Communication
      Freeze Frame:
      Fault Status: 01100100
      Fault Priority: 5
      Fault Frequency: 1
      Reset counter: 204
      Mileage: 168486 km
      Time Indication: 0
      Date: 2017.05.16
      Time: 09:00:31

      Freeze Frame:
      Bin. Bits: 0010
      Mileage: 168480 km
      Count: 1605
      Clock: 09:00


      -------------------------------------------------------------------------------
      Address 65: Tire Pressure Labels: 8J0-907-273.lbl
      Part No SW: 8J0 907 273 A HW: 8J0 907 273 A
      Component: J502_RDK H02 0300
      Revision: --H02-D0 Serial number: 12679671862102
      Coding: 0840019
      Shop #: WSC 01236 785 00200
      VCID: 2F661E00BEAEBF59C75-807A

      1 Fault Found:
      01316 - ABS Control Module
      004 - No Signal/Communication
      Freeze Frame:
      Fault Status: 01110100
      Fault Priority: 6
      Fault Frequency: 1
      Reset counter: 204
      Mileage: 168486 km
      Time Indication: 0
      Date: 2017.05.16
      Time: 09:00:20

      Freeze Frame:
      Not Recogn.
      Bin. Bits: 00001000 00000001
      Voltage: 13.60 V
      Text: 12,5°C;n.erkannt; n.erkannt


      -------------------------------------------------------------------------------
      Address 77: Telephone Labels: 8P0-862-335.lbl
      Part No SW: 8P0 862 335 J HW: 8P0 862 335 J
      Component: FSE_255x BT H26 0290
      Revision: 00000000 Serial number: 00000005025076
      Coding: 0011477
      Shop #: WSC 01236 785 00200
      VCID: 3D7A344864C25DC9459-8068

      No fault code found.

      End-------------------------(Elapsed Time: 02:24)--------------------------
      -Josh

      1-12-5-8-3-10-6-7-2-11-4-9

    11. Member OOOO-A3's Avatar
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      05-16-2017 06:04 PM #11
      Quote Originally Posted by PowerDubs View Post
      what controls everything on this car?
      Satan.


      Since some of the items in your scan seem to be Body Control Module and others seem to be Powertrain.... is it possible a mouse found and chewed a critical CANBUS cable? Is the car parked outside? Literally everything is saying that it can't communicate.

    12. Senior Member PowerDubs's Avatar
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      05-16-2017 06:05 PM #12
      Forgot that the modules it says unavailable such as the engine will connect if I go into them by themselves-

      Tuesday,16,May,2017,17:48:42:46067
      VCDS -- Windows Based VAG/VAS Emulator
      VCDS Version: 14.10.2.0 (x64)
      Data version: 20150311
      www.Ross-Tech.com




      Address 01: Engine Labels: 022-906-032-BDB.lbl
      Control Module Part Number: 022 906 032 HF HW: 022 906 032 GP
      Component and/or Version: TT-3.2-HS-LEV2 G UM21
      Software Coding: 0000172
      Work Shop Code: WSC 00001 000 00000
      VCID: 56A88BE4E2B4AE91643-5120
      3 Faults Found:

      049154 - Powertrain Databus
      U0002 - 008 - No Communications - Intermittent
      Freeze Frame:
      Fault Status: 00101000
      Fault Priority: 0
      Fault Frequency: 254
      Reset counter: 255
      Mileage: 0 km
      Time Indication: 0

      Freeze Frame:
      RPM: 0 /min
      Load: 0.0 %
      Speed: 0.0 km/h
      Temperature: 25.0°C
      Temperature: 30.0°C
      Absolute Pres.: 990.0 mbar
      Voltage: 11.938 V

      049153 - Powertrain Databus
      U0001 - 008 - Unspecified Malfunction
      Freeze Frame:
      Fault Status: 01101000
      Fault Priority: 0
      Fault Frequency: 2
      Reset counter: 255
      Mileage: 0 km
      Time Indication: 0

      Freeze Frame:
      RPM: 0 /min
      Load: 0.0 %
      Speed: 0.0 km/h
      Temperature: 21.0°C
      Temperature: 29.0°C
      Absolute Pres.: 990.0 mbar
      Voltage: 12.192 V

      001299 - Incorrect Immobilizer Key
      P0513 - 008 -
      Freeze Frame:
      Fault Status: 01101000
      Fault Priority: 0
      Fault Frequency: 2
      Reset counter: 255
      Mileage: 0 km
      Time Indication: 0

      Freeze Frame:
      RPM: 1185 /min
      Load: 43.5 %
      Speed: 0.0 km/h
      Temperature: 24.0°C
      Temperature: 29.0°C
      Absolute Pres.: 990.0 mbar
      Voltage: 10.668 V


      Readiness: 0000 0000
      -Josh

      1-12-5-8-3-10-6-7-2-11-4-9

    13. Senior Member Air and water do mix's Avatar
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      05-16-2017 06:37 PM #13
      So it acts like the battery is bad, yet cranks over (which is the highest load the battery gets). If one of the VAG-COM experts doesn't come up with anything I'm going to suggest a low voltage situation possibly caused by corrosion or a bad ground.

      Also, I'm curious since this is out of my wheelhouse, so I'm hanging in here for the long haul.

      Best of luck with it!
      Quote Originally Posted by Boyz in da Park
      Proletariat, Bourgeoise - Everybody smellin' my potpourri...

    14. Senior Member PowerDubs's Avatar
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      05-16-2017 09:02 PM #14
      Quote Originally Posted by cuppie View Post
      You'll also get help if you post this in the Vag-Com forum here. FYI: Posting the full Auto-scan is required there.

      I made a post there as well- but unfortunately it is also a ghost town. Look at the first couple pages and most posts are unanswered.
      -Josh

      1-12-5-8-3-10-6-7-2-11-4-9

    15. Senior Member patrikman's Avatar
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      05-16-2017 09:06 PM #15
      +1 vote for ignition switch. Because a 1998 Jetta GLX is pretty much the same car right? Right? I dunno, that's how mine behaved.

      initiative comes to thems that wait


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    16. Member
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      05-16-2017 09:06 PM #16
      Battery would be my guess.

    17. Member CoreyB's Avatar
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      05-16-2017 09:24 PM #17
      The car has a gateway control module, and this definitely looks like a CAN-bus issue. In order to check if you have activity on the network an o-scope is needed. I would locate the gateway and make sure that all wiring and connectors going into it are in good shape. It looks like neither your CAN-high or low wires are talking. If wiring isn't an issue then the module itself is. Also, if you haven't yet, checking all fuses is a good place to start. Judging by the faults present it seems to be an issue only on the powertrain side which would be high-speed CAN.

      If you do not have the proper tools needed to diagnose this kind of problem then fixing it will be a nightmare. It may be easier and most likely faster to bring the car in to be fixed. Without an o-scope and gateway breakout box it will be very hard to track down what is bringing down the network.

      Find any control units located on the floor or under the seats as these are the most susceptible to damage, especially water damage. If you've ever found the car with wet carpets then there could definitely be water damaged control units.

      Best of luck

      P.S. to those saying ignition switch, without seeing a wiring diagram for the car I wouldn't completely rule it out, but with something of this vintage, there's a 95% chance that it would have little affect on the full electrical system of the car. Almost everything on this vehicle is using a data bus to communicate. Multiple control units need to talk just for the vehicle to start.
      Last edited by CoreyB; 05-16-2017 at 09:28 PM.
      Have a Porsche related question, or need specific info about a Porsche model? Please feel free to ask. I am a certified Porsche tech

    18. Member BUJonathan's Avatar
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      05-16-2017 09:30 PM #18
      To add this: Definitely smells like a CAN bus issue. Generally one module acts as the head of the CAN bus. On Fords it's the instrument cluster -- not sure if VW/Audis are the same or not. But I would start with troubleshooting the cluster and Body Control Module (BCM) and inspect the wiring going to/from those modules as well.
      =

    19. 05-16-2017 09:39 PM #19
      I am going to 3rd a CAN issue and 2nd everything CoreyB mentioned.

      Not sure if Audi was using a separate Gateway module on the 08 TT, but IIRC earlier models used the instrument cluster as the gateway. I have seen 1 defective module take down a network, you may end up having to unplug modules 1 at a time and looking to see if you can communicate with the others. The ABS module in the B5 Passat was pretty good at taking down the CAN.

      Good luck!

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      05-16-2017 09:40 PM #20
      This is confirmation of powertrain CAN failure:

      'Address 19: CAN Gateway Labels: 1K0-907-530-V2.clb
      Part No SW: 1K0 907 530 K HW: 1K0 907 951
      Component: J533__Gateway H12 0170
      Revision: H12 Serial number: 33001073300203
      Coding: FD8F03EA27004100
      Shop #: WSC 01236 785 00200
      VCID: 2F661E00BEAEBF59C75-807A

      1 Fault Found:
      01312 - Powertrain Data Bus
      014 - Defective

      Freeze Frame:
      Fault Status: 01101110
      Fault Priority: 1
      Fault Frequency: 6
      Reset counter: 204
      Mileage: 168486 km
      Time Indication: 0
      Date: 2017.05.16
      Time: 09:00:11

      Seeing how you can force communication with ECM, it might be operating in 1 wire mode or the OBD2 connector has a direct connecting to powertrain/ECM. What's the VIN? Later on I can take a look at TSBs and sift through wire diagrams to see if I can suggest an area to check. If you have another mk5 platform car, try swapping gateways to see if communication is restored, no codings/adaptations should be performed. Can't say if that will piss off the immobilizer or component protection.

    21. Member jddaigle's Avatar
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      05-16-2017 09:42 PM #21
      The Mk5 Golf platform has a dedicated CAN Gateway module.
      - Jeff
      B6 Passat 3.6 & 4motion Resource Thread
      Now: 2008 VW Passat 3.6 4motion Wagon, 2013 Fiat 500 Sport
      Then: 1987 Volvo 745GLE, 1989 Volvo 740GL, 1994 Volvo 940T, 1995 Infiniti G20, 2000 VW Passat 1.8T, 2001 VW Jetta Wolfsburg Ed (x2), 2004 VW Golf TDI, 2006 Jetta TDI

    22. Senior Member PowerDubs's Avatar
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      05-16-2017 10:08 PM #22
      -Josh

      1-12-5-8-3-10-6-7-2-11-4-9

    23. Member BUJonathan's Avatar
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      05-16-2017 11:55 PM #23
      Quote Originally Posted by jddaigle View Post
      The Mk5 Golf platform has a dedicated CAN Gateway module.
      Quote Originally Posted by PowerDubs View Post
      Ignore my prior comment about the instrument cluster... your car uses a separate module as the head (or gateway) for the CAN bus. I would start with the Gateway module, and also check the wake-up line wiring going to the unit.
      =

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      05-16-2017 11:59 PM #24
      Going over wire diagrams didn't help, no detail to where in the car the wires go. I was hoping to see an intermediate connector that possibly would be listed in component locations, but no luck. Components on the Powertrain CAN (option dependent):

      E313 - Selector lever
      F189 - tiptronic switch
      J431 - Headlamp range control module
      J492 - All wheel drive control module
      J500 - Power steering control module
      J527 - Steering column electronics control module
      J533 - Data bus on board diagnostic interface
      J623 - Engine control module
      J743 - DSG transmission Mechatronic
      J869 - Structure borne sound control module

      You can try unplugging these one by one to see if communication is restored, just like how you described your PC network diagnosis. It's a long shot so if some of the components are difficult to access then you can hold off for now.

      Ignition switch for the mk5 golf platform was total crap, but I don't see it killing only the Powertrain CAN. Same ignition switch was used in Golf, Jetta, Passat maybe, A3/TT/R8. Audi TSB for the switch is listed for random door lock/unlock while driving, radio turning on/off. Their failure will store different trouble codes not all listed in the TSB, sometimes they even cause battery drain. Probably not your problem, but is something to think about. When you first scanned it, were there any DTCs for 'S contact'?

      Since you don't have a scope, the repair manual lists a procedure for testing the communication circuit between ECM and Gateway:

      CAN-Bus Terminal Resistance, Checking

      Special tools and workshop equipment required

      Multimeter.
      Wiring diagram.

      Test requirement

      A CAN-Bus malfunction was recognized.

      The Engine Control Module (ECM) - J623- fuses OK.

      Battery voltage at least 12.5 volts.

      All electrical consumers such as, lights and rear window defroster, switched off.

      Vehicles with automatic transmission, shift selector lever into position “P” or “N”.

      A/C switched off.

      Ground (GND) connections between engine/transmission/chassis OK.

      Ignition switched off.


      Function

      The Engine Control Module (ECM) -J623- communicates with other CAN-Bus capable control modules.

      The control modules are connected by two data bus wires which are twisted together (CAN_High and CAN_Low), and exchange information (messages). Missing information on the CAN-bus is recognized as a malfunction by the Engine Control Module (ECM) -J623- and the other control modules connected to the CAN-bus.

      Trouble-free operation of the CAN-Bus requires that it have a terminal resistance. This central terminal resistance is located in the Engine Control Module (ECM) -J623-.

      Procedure

      – Disconnect the Data Bus On Board Diagnostic Interface -J533- electrical harness connector.

      Note: The Engine Control Module (ECM) -J623- must remain connected for the following step.

      – Using a Multimeter, check the Data Bus On Board Diagnostic Interface -J533- electrical harness connector terminals 6 to 16 for resistance.

      Specified value: 60 to 72 O (at approx. 20° C)

      If the specified value was not obtained:

      – Check the wiring connection for an open circuit, short circuit to Battery (+) or Ground (GND).
      – Check the wiring connection for damage, corrosion, loose or broken terminals.
      – If necessary, repair the faulty wiring connection

      If no malfunction is found in the wiring:

      – Replace the Engine Control Module (ECM) -J623-. Refer to → Chapter.

      If the specified value was obtained:

      Checking wiring:

      If the manufacturers test box is being used. Perform the following step.

      – Install the Test Box 105 Pin -VAG1598/31-. Refer to → Rep. Gr.24.

      If the manufacturers test box is not being used. Perform the following step.

      – Remove the Engine Control Module (ECM) -J623-. Refer to → Chapter.
      – Using a Multimeter, check the Data Bus On Board Diagnostic Interface -J533- electrical harness connector to the Engine Control Module (ECM) -J623- electrical harness connector T81 for resistance.

      Data Bus On Board Diagnostic Interface -J533- electrical harness connector terminals:

      6 (Can_Bus Low) - orange with brown stripe
      16 (Can_Bus High) - orange with black stripe

      Engine Control Module (ECM) -J623- electrical connector T81 (81 pin connector) terminals or test box sockets

      58
      60

      Specified value: 1.5 Ohm Max.

      If the specified value was not obtained:

      – Check the wiring connection for an open circuit, short circuit to Battery (+) or Ground (GND).
      – Check the wiring connection for damage, corrosion, loose or broken terminals.
      – If necessary, repair the faulty wiring connection.

      If no malfunction is found in the wiring:

      – Replace the Data Bus On Board Diagnostic Interface -J533-.

      Final procedures

      After repair work, the following work steps must be performed in the following sequence:

      1 - Check the DTC memory. Refer to → Chapter.
      2 - If necessary, erase the DTC memory. Refer to → Chapter.
      3 - If the DTC memory was erased, generate readiness code. Refer to → Chapter.

      End of diagnosis.


      That was a copy and paste, had to edit it some. Contains text links to other portions of the repair manual which won't work for you. If your testing leads to where it says to replace the ECM, don't take it too seriously. If it takes you to replacing the gateway, it might be a little trustworthy. That is where having a scope helps so you can see if communication signals are reaching the gateway on CAN high and low. Repair manual says the gateway control module is located next to the steering column, looks to be on the center console side of the steering column. It will have a bunch of twisted pair wires running to it.

      ECM and other control modules might have measured value blocks for network communication. If it does, and the values show that communication is okay with networks other then powertrain or control modules not on powertrain, then you can use that info to help determine if the gateway is bad or if powertrain CAN is genuinely cut off from the rest of vehicle.

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      05-17-2017 07:55 AM #25
      Quote Originally Posted by Audi_Mechanic View Post
      Going over wire diagrams didn't help, no detail to where in the car the wires go...
      Holy crap!

      Can you fit that engine with carburetors?
      Quote Originally Posted by Boyz in da Park
      Proletariat, Bourgeoise - Everybody smellin' my potpourri...

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