'03 Touareg comm issue

MartinsX · Sep 15, 2016

Look's like I have got similar situation like this T5 http://forums.ross-tech.com/showthread.php?7619-Transporter-T5-strange-communication-issues
Only I have Touareg. Mainly everything directly on K-line talks to diagnostics, everything on CAN - not. Can gateway is part of Instrument panel. Is there the same as for T5, that CAN to diagnostic socket as by WD is not active? Do Instruments have separate fuse for CAN Gateway part? Panel is illuminated with ignition on, several warning lights (ABS, battery, seatbelts, etc) came on and off as they should do. Any ideas?

Code:

Friday,16,September,2016,02:07:52:32442
VCDS -- Windows Based VAG/VAS Emulator Running on Windows XP x86
VCDS Version: 16.8.1.1
Data version: 20160902 DS256
www.Ross-Tech.com


VIN: WVGZZZ7LZ3D008689   License Plate: 


Chassis Type: 7L (7L - VW Touareg (2003 > 11/2006))
Scan: 01 02 03 05 06 08 09 11 13 15 16 17 18 19 1C 22 29 32 34 36
          37 39 3C 46 47 55 56 57 64 65 68 69 6C 6D 6E 75 76 77
 
VIN: WVGZZZ7LZ3D008689   
-------------------------------------------------------------------------------
Address 01: Engine        Labels: Redir Fail!
   Part No SW: 070 906 016 D    HW: 028 101 073 6
   Component: V10 5,0L EDCG000AGMŖ5264  
   Coding: 0000127
   Shop #: WSC 00018 264 05222
   VCID: 1129DF7B0B17C0CA37-517C

No fault code found.
Readiness: 0 0 X X X 

-------------------------------------------------------------------------------
Address 02: Auto Trans        Labels: 09D-927-750.lbl
   Part No: 09D 927 750 E
   Component: AL 600 6Q           0318  
   Coding: 0012328
   Shop #: WSC 31414 000 00000
   VCID: 306F7AFFA05DE9C218-50E8

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes        Labels: 7L0-907-379-MK25.lbl
   Part No: 7L0 907 379 B
   Component: ESP ALLRAD MK25     0106  
   Coding: 0022785
   Shop #: WSC 31414 000 00000
   VCID: 387F42DF482D318250-5140

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: 7L6-907-040.clb
   Part No: 7L6 907 040 D
   Component: CLIMAtronic R/L     0302  
   Coding: 0001020
   Shop #: WSC 31414 000 00000
   VCID: 31697FFBAB57E0CA17-5140

6 Faults Found:
01810 - Actuating Motor for Temperature Flap; Right (V159) 
            000 -  -  - Intermittent
00710 - Defroster Flap Positioning Motor (V107) 
            000 -  -  - Intermittent
00668 - Supply Voltage Terminal 30 
            002 - Lower Limit Exceeded - Intermittent
01592 - Air Quality Sensor (G238) 
            010 - Open or Short to Plus
01336 - Company Data Bus for Comfort System 
            004 - No Signal/Communication - Intermittent
01299 - Diagnostic Interface for Data Bus (J533) 
            013 - Check DTC Memory

-------------------------------------------------------------------------------
Address 11: Engine II        Labels: Redir Fail!
   Part No SW: 070 906 016 D    HW: 028 101 073 6
   Component: V10 5,0L EDCG000AGSŖ5264  
   Coding: 0000127
   Shop #: WSC 00018 264 05222
   VCID: 1129DF7B0B17C0CA37-517C

No fault code found.

-------------------------------------------------------------------------------
Address 22: AWD        Labels: None
   Part No: 0AD 927 755 BE
   Component: TRANSFERCASE        0122  
   Shop #: WSC 00000 000 00000
   VCID: 7F0D69C32D83C6BAD1-515E

No fault code found.

-------------------------------------------------------------------------------
Address 34: Level Control        Labels: 7Lx-907-553-34.clb
   Part No: 7L6 907 553 B
   Component: LUFTFDR.-CDC- 3C1P1 3650  
   Coding: 0015520
   Shop #: WSC 02237 264 61425
   VCID: 387F42DF482D318250-515E

1 Fault Found:
00145 - Rear Right Dampening Adjustment Valve (N339) 
            012 - Electrical Fault in Circuit - Intermittent

-------------------------------------------------------------------------------
Address 46: Central Conv.        Labels: 7L0-959-933.lbl
   Part No: 7L0 959 933 C
   Component: BF HSG              3214  
   Coding: 0000065
   Shop #: WSC 00020 264 61507
   VCID: 3C775ECF7C151DA2B4-4ACE

   Subsystem 1 - Part No: 7L0 959 701 B
   Component: Tuersteuergeraet FS 0104

   Subsystem 2 - Part No: 7L0 959 702 B
   Component: Tuersteuergeraet BF 0104

   Subsystem 3 - Part No: 7L0 959 703 B
   Component: Tuersteuergeraet HL 0104

   Subsystem 4 - Part No: 7L0 959 704 B
   Component: Tuersteuergeraet HR 0104

   Subsystem 5 - Part No: 7L0 907 719 
   Component:    Neigungssensor   0018

   Subsystem 6 - Part No: 7L6 951 171 
   Component: A  Innenraumsensor  0019

4 Faults Found:
00486 - Front Passengers Outside Door Handle Central Locking Button (E370) 
            007 - Short to Ground
00929 - Locking Module for Central Locking; Front Passenger Side (F221) 
            008 - Implausible Signal - Intermittent
00108 - Signal Central Locking SAVE/LOCK Rear Right 
            008 - Implausible Signal
00931 - Locking Module for Central Locking; Rear Right (F223) 
            008 - Implausible Signal

End-------------------------(Elapsed Time: 10:29)--------------------------

Jack@European_Parts · Sep 15, 2016

Is your interface trying TP 1.6....?
I believe there is a fuse and will have a look being back soon.

MartinsX · Sep 15, 2016

I'm working on it

All CAN's disconnected - Instruments alive. Will try to connect them back one-by-one

Code:

Friday,16,September,2016,02:59:59:32442
VCDS Version: Release 16.8.1 Running on Windows XP x86
www.Ross-Tech.com

                Address 17: Instruments       Labels: 7L6-920-xxx-7LA.lbl
Control Module Part Number: 7L6 920 880 C
  Component and/or Version: KOMBIINSTRUMENT RB4 2835
           Software Coding: 0007111
            Work Shop Code: WSC 00020 264 61507
                      VCID: 377D41E345333EFA59-515E
8 Faults Found:

01310 - Level Control System Control Module (J197) 
            004 - No Signal/Communication
01314 - Engine Control Module 
            004 - No Signal/Communication
01315 - Transmission Control Module 
            004 - No Signal/Communication
01316 - ABS Control Module 
            004 - No Signal/Communication
01321 - Control Module for Airbags (J234) 
            004 - No Signal/Communication
02053 - Control Module for Transfer Case (J646) 
            004 - No Signal/Communication
01336 - Company Data Bus for Comfort System 
            004 - No Signal/Communication
01305 - Databus for Infotainment 
            004 - No Signal/Communication

MartinsX · Sep 15, 2016

Comfort CAN is the "bad guy". Next step will be very long - to follow all wires and disconnect all modules on Comfort CAN. Maybe someone knows typical places or modules where things go wrong on Touareg's Comfort CAN?

Jack@European_Parts · Sep 15, 2016

I'd start with 0x19

photo uploading websites

MartinsX · Sep 15, 2016

Thanks, Jack!
Fuses are ok. Something on comfort CAN shuts it down completely. Shorted wires, water damages inside some module etc. I have seen by myself on another Touaregs corroded wire connections on comfort CAN inside plastic tunnels on floor. But then it was open circuit and just some modules behind middle pillars lost comm's.
I don't like Mercedes, but they have got one nice thing - CAN termination points. There it is possible to disconnect and connect several CAN lines just by unplugging and plugging back connectors.

MartinsX · Sep 20, 2016

Do anyone know, are physical layouts/drawings of wiring looms available in any VAG service manual? Like a lot of Japanese car's service manuals have those included. I haven't seen any for VAG's except some really ancient Audi. Could be useful at least to locate CAN connection points to separate different lines going in different directions.
Now I have more than half modules disconnected from Comfort CAN, still the same, CAN is blocked, 11,5V on CAN-Low and 0,3V on CAN-High, if measured against chassis ground

Jack@European_Parts · Sep 20, 2016

Twisted pairs is the key.............
First things first...........isolated.
Can gateway talk on bench?

MartinsX · Sep 20, 2016

That all will be continued tomorrow evening. Some nights I use to sleep, too

themadscientist · Sep 27, 2016

I'm about to pull the van back in to get back to business on it. When you say you disconnected all the CANs, did you mean that you unplugged the outgoing CAN wires from the back of the cluster?

MartinsX · Sep 27, 2016

Yes, first of all I disconnected complete plug with all CAN's. Later I disconnected only suspected CAN lines by removing pins from connector shell.
Overall update for now - I have discovered 4 modules making battery voltage on CAN-low wire. Probably CAN gateway inside cluster is damaged too, it works different each time I switch on ignition. Waiting for replacement cluster now.

themadscientist · Sep 27, 2016

MartinsX said:
Yes, first of all I disconnected complete plug with all CAN's. Later I disconnected only suspected CAN lines by removing pins from connector shell.
Overall update for now - I have discovered 4 modules making battery voltage on CAN-low wire. Probably CAN gateway inside cluster is damaged too, it works different each time I switch on ignition. Waiting for replacement cluster now.

I just tried that on the T5. Disconnected the green cluster plug. Still no comms with cluster or anything besides 01 and 46.

MartinsX · Sep 27, 2016

Bypass/disconnect all K line wiring and make one straight wire from diagnostic socket pin 7 to cluster's blue connector pin 25. Ignition on and try to connect to addresses 17 and 19.

themadscientist · Sep 27, 2016

MartinsX said:
Bypass/disconnect all K line wiring and make one straight wire from diagnostic socket pin 7 to cluster's blue connector pin 25. Ignition on and try to connect to addresses 17 and 19.

OK, I'll try this right now. Do I leave the green connector unplugged?

MartinsX · Sep 27, 2016

For first test leave it unplugged.

themadscientist · Sep 27, 2016

Alright, ran an isolated wire from pin 7 at DLC to pin 25 k line on cluster blue plug and tested it for continuity to make sure my connection was good. Tried to connect to 17 and 19 with green unplugged - no access. Tried it with green plugged in - no access.

Bad cluster?

MartinsX · Sep 27, 2016

If all original K-line wires were disconnected, then probably yes, cluster's K-line interface is out of order. Is cluster alive by itself? All warning lamps etc lit up with ignition on? Tried Test command in VCDS Options menu?

themadscientist · Sep 27, 2016

Yeah cluster has always worked fine. Test command shows same thing k1-ok k2-ok CAN-not ready

EDIT: I have some different clusters I could use for testing purposes. A mk4 golf and 2002 a4. Will it do anything permanent to the immobilizer if I plug one in to see if I can connect to it?

EDIT 2: Perhaps if I disconnect the ECM it should prevent any permanent faults?

Jack@European_Parts · Sep 27, 2016

Don't do this unless you verify the schematic's............ :banghead:

MartinsX · Sep 27, 2016

Jack, if he connects only 15, 30, 31 and K according WD, nothing wrong can happen.

'03 Touareg comm issue

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