Touareg T1 - Lamp for Low Beam; Left (M29) 007 - Short to Ground

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hallkbrdz

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I bought the '06 v10 Touareg about a month ago. The headlights worked when I bought it, but were very dim. It had cheap bulbs in it that probably burnt the chrome (lovely).

I replaced the hardly insulated short jumper behind trays that somehow worked, and the bulbs with Sylvania Basic D1S. Both lows worked but were still not very bright. After a week the left light fails to turn on, right at the start of a trip of course...

I then bought a new Valeo ballast and replaced the left one thinking that was the problem. Still no left light, shows the below error in VCDS:

Address 09: Cent. Elect. Labels:. 7Lx-937-049-V1.clb
Part No: 7L6 937 049 N
Component: 3002
Coding: 0111838
Shop #: WSC 22188 444 89171
VCID: 4796E2DA3580D07718-5120

00978 - Lamp for Low Beam; Left (M29)
007 - Short to Ground (BUT WHERE?)

Thinking it was the internal headlight module wiring, I bought and replaced the headlight units with new Valeo ones, swapping the low bulbs and ballasts. Still no left light! I cleared the code, turned the vehicle off. Started it up - still the same error.

I tested the short 3-wire jumper from the ballast to the bulb, and it appears to be fine as I swapped left and rights with no change. Then I poked around in VCDS some more and realized that if I select 39 - the right headlight, it connects to the controller fine. If I select 29 - the left headlight, nothing. VCDS cannot find it! The rest of the lights work fine on that side (high, turn, marker). From what I can tell these are all driven from the "Vehicle Electrical System Central Control Unit" module under that dash.

I'm still looking for a good wiring diagram for 2006 xenons so I can actually test voltages and find the short to ground (if that is still true, and not something that just needs to be re-coded or reset). Recommendations?

Thanks in advance,
Bryan

Here is a full scan I did earlier before replacing anything:


Code:
Monday,12,August,2019,13:43:53:11556
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 19.6.1.0 (x64)
Data version: 20190529 DS308.0
[url]www.Ross-Tech.com[/url]


VIN: WVGPT77L46D063114   License Plate: TOURAG
Mileage: 339690km-211073mi   Repair Order: 



--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
0111838

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: WVGPT77L46D063114   Mileage: 339690km-211073miles
-------------------------------------------------------------------------------
Address 01: Engine        Labels: Redir Fail!
   Part No SW: 070 906 016 CQ    HW: 028 101 196 2
   Component: V10 5,0L EDCG000AGMª8472  
   Revision: --H02---    Serial number: VWZ3Z0F6459651
   Coding: 0060575
   Shop #: WSC 66565 257 00032
   VCID: 61C21C42BB648E47F6-5120

No fault code found.
Readiness: 0 0 0 0 1 

-------------------------------------------------------------------------------
Address 02: Auto Trans        Labels: 09D-927-750.clb
   Part No SW: 09D 927 750 DP    HW: 09D 927 750 DP
   Component: AL 750 6A           0856  
   Revision: 00H37000    Serial number:               
   Coding: 0004216
   Shop #: WSC 31414 000 00000
   VCID: 7F06BA3A2DD058B7E0-513C

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes        Labels: 7L0-907-379-MK25.lbl
   Part No: 7L0 907 379 G
   Component: ESP ALLRAD MK25     0203  
   Coding: 0022786
   Shop #: WSC 31414 000 00000
   VCID: 3D7A8032675C8AA7B2-513C

No fault code found.

-------------------------------------------------------------------------------
Address 05: Acc/Start Auth.        Labels: None
   Part No SW: 7L0 909 137 A    HW: 5WK 485 02
   Component: 29 Kessy            6700  
   Revision: 67005915    Serial number: VWZ3Z0F6459651
   Coding: 0147688
   Shop #: WSC 31414 000 00000
   VCID: 3162AC02AB047EC726-513C

   Subsystem 1 - Part No: XXXXXXXXXXX 
   Component: ELV                 XXXX

No fault code found.

-------------------------------------------------------------------------------
Address 06: Seat Mem. Pass        Labels: None
   Part No: 7L0 959 760 
   Component: Sitzverstellung     0701  
   Shop #: WSC 00000 000 00000
   VCID: 77F6521A05E060F7A8-513C

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: None
   Part No: 7L6 907 044 T
   Component: CLIMAtronic 2+2     4222  
   Coding: 0021030
   Shop #: WSC 31414 000 00000
   VCID: 458AE8D20F8CC267EA-513C

   Subsystem 1 - Part No: 7L6 907 049 E
   Component: CLIMAtronic FOND    0400

2 Faults Found:
00710 - Defroster Flap Positioning Motor (V107) 
            000 - -
02600 - Rear Right Temperature Flap Motor (V314) 
            000 - - - Intermittent

-------------------------------------------------------------------------------
Address 09: Cent. Elect.        Labels:. 7Lx-937-049-V1.clb
   Part No: 7L6 937 049 N
   Component:                     3002  
   Coding: 0111839
   Shop #: WSC 22188 444 89171
   VCID: 4796E2DA3580D07718-513C

1 Fault Found:
00907 - Intervention load Management 
            000 - -

-------------------------------------------------------------------------------
Address 11: Engine II        Labels: Redir Fail!
   Part No SW: 070 906 016 CQ    HW: 028 101 196 2
   Component: V10 5,0L EDCG000AGSª8472  
   Revision: --H02---    Serial number: VWZ3Z0F6459651
   Coding: 0060575
   Shop #: WSC 66565 257 00032
   VCID: 61C21C42BB648E47F6-513C

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags        Labels: 3D0-909-601.lbl
   Part No: 3D0 909 601 H
   Component: 05 Airbag 8.4E++H01 0562  
   Revision: BB38727     Serial number: 0007756?      
   Coding: 0012341
   Shop #: WSC 31414 000 00000
   VCID: 2854416698DE3F0FF1-5120

   Subsystem 1 - Part No: 7L0 959 339 C
   Component: BF-Gewichtsens. 006 0008

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel        Labels: 7L6-953-549.lbl
   Part No: 7L6 953 549 F
   Component: Lenksaeulenmodul    3501  
   Coding: 0010032
   Shop #: WSC 31414 790 00001
   VCID: 4280F3CE1EA2F55FCF-5120

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments        Labels: 7L6-920-xxx-7LA.lbl
   Part No: 7L6 920 981 R
   Component: KOMBIINSTRUMENT RB8 3211  
   Coding: 0005231
   Shop #: WSC 31414 000 00000
   VCID: 4894E1E6389EDF0F11-513C

No fault code found.

-------------------------------------------------------------------------------
Address 18: Aux. Heat        Labels: 7L6-819-008.clb
   Part No: 7L6 815 071 D
   Component: Standheizung E1MAC   
   Coding: 0000100
   Shop #: WSC 31414 000 00000
   VCID: 336EA60A51184CD754-5120

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway        Labels: 6N0-909-901-19.lbl
   Part No: 6N0 909 901 
   Component: Gateway K<>CAN      0101  
   Coding: 0000006
   Shop #: WSC 22188 444 52556
   VCID: 70E46906608E37CF69-513C

No fault code found.

-------------------------------------------------------------------------------
Address 1C: Position Sensing        Labels: 7L6-919-879.lbl
   Part No: 7L6 919 879 A
   Component: JCI PathPoint       2200  
   Shop #: WSC 00000 000 00000
   VCID: 458AE8D20F8CC267EA-5120

No fault code found.

-------------------------------------------------------------------------------
Address 22: AWD        Labels: None
   Part No: 0AD 927 755 AT
   Component: TRANSFERCASE        0114  
   Shop #: WSC 00000 000 00000
   VCID: 0D1A10F2177C7A27E2-513C

No fault code found.

-------------------------------------------------------------------------------
Address 34: Level Control        Labels: 7Lx-907-553-34.clb
   Part No: 7L0 907 553 F
   Component: LUFTFDR.-CDC- 3C3P1 3081  
   Coding: 0015521
   Shop #: WSC 31414 000 00000
   VCID: 36689F1E426A59FF73-513C

No fault code found.

-------------------------------------------------------------------------------
Address 36: Seat Mem. Drvr        Labels: None
   Part No: 7L0 959 760 
   Component: Sitzverstellung     0703  
   Shop #: WSC 00000 000 00000
   VCID: 77F6521A05E060F7A8-513C

No fault code found.

-------------------------------------------------------------------------------
Address 37: Navigation        Labels: 7L6-919-887-DVD.lbl
   Part No: 7L6 919 887 M
   Component:      Navigation     0047  
   Coding: 0000101
   Shop #: WSC 31414 000 00000
   VCID: 50A4C986C0CE17CF49-513C

No fault code found.

-------------------------------------------------------------------------------
Address 39: Right Light        Labels: 3D0-909-158.lbl
   Part No: 3D0 909 158 
   Component: EVG GDL+AutoLWR(r)  0001  
   Coding: 0000003
   Shop #: WSC 31414 000 00000
   VCID: 67D6025A5540F07738-5102

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv.        Labels: 7L0-959-933.lbl
   Part No: 7L0 959 933 J
   Component:    HSG              5115  
   Coding: 0000085
   Shop #: WSC 31414 000 00000
   VCID: 438EF6CA01B8FC57C4-4B00

   Subsystem 1 - Part No: 7L0 959 701 H
   Component: Tuersteuergeraet FS 0201

   Subsystem 2 - Part No: 7L0 959 702 H
   Component: Tuersteuergeraet BF 0201

   Subsystem 3 - Part No: 7L0 959 703 D
   Component: Tuersteuergeraet HL 0201

   Subsystem 4 - Part No: 7L0 959 704 D
   Component: Tuersteuergeraet HR 0201

6 Faults Found:
00927 - Terminal 30 (Right) 
            011 - Open Circuit - Intermittent
01516 - Terminal 30; Left 
            011 - Open Circuit - Intermittent
00926 - Terminal 30 
            011 - Open Circuit - Intermittent
00668 - Supply Voltage Terminal 30 
            002 - Lower Limit Exceeded - Intermittent
01134 - Alarm Horn (H12) 
            000 - -
00488 - Rear Right Outside Door Handle Central Locking Button (E372) 
            007 - Short to Ground

-------------------------------------------------------------------------------
Address 47: Sound System        Labels: 7Lx-035-4xx-47.lbl
   Part No: 7L6 035 456 
   Component: 08K Audioverst.     0105  
   Shop #: WSC 00000 000 00000
   VCID: 70E46906608E37CF69-5120

   Subsystem 1 - Part No: 7L6 035 456 
   Component: 08K Audioverst.     0105

No Faults Found
  or DTCs not supported by controller
  or a communication error occurred

-------------------------------------------------------------------------------
Address 56: Radio        Labels: 7L6-035-186-DVD.lbl
   Part No: 7L6 035 186 E
   Component:        Radio        0047  
   Coding: 0014062
   Shop #: WSC 31414 000 00000
   VCID: 356A98125F6C52E77A-5120

No fault code found.

-------------------------------------------------------------------------------
Address 68: Wiper Electr.        Labels: 7L0-955-119-V2.clb
   Part No: 7L0 955 119 K
   Component: Front Wiper         4027  
   Coding: 0000341
   Shop #: WSC 31414 000 376832
   VCID: 3C7C8D367C4683AF85-513C

   Subsystem 2 - Part No: 1K0 955 559 T  Labels: 1K0-955-559-AF.CLB
   Component: RegenLichtSens 011  1110  
   Coding: 00208933
   Shop #: WSC 31414  

No fault code found.

-------------------------------------------------------------------------------
Address 69: Trailer        Labels: 7L0-907-383-1D2.lbl
   Part No SW: 7L0 907 383 G    HW: 7L0 907 383 G
   Component: ANHAENGERELEKTRONIK 8854  
   Coding: 0000002
   Shop #: WSC 31414 000 00000
   VCID: 38749126487EAF8F61-5120

No fault code found.

-------------------------------------------------------------------------------
Address 6C: Back-up Cam.        Labels: 5N0-907-441.clb
   Part No SW: 7L6 907 441     HW: 7L6 907 441 
   Component: J772__Rearview      0051  
   Revision: 00H07000    Serial number:    PA8 J620637
   Coding: 0000101
   Shop #: WSC 31414 000 00000
   VCID: 72E0630E6E8205DF9F-513C

No fault code found.

-------------------------------------------------------------------------------
Address 6E: Ctrl Head Roof        Labels: None
   Part No: 7L6 919 044 T
   Component: DACHDISPLAY         0539  
   Revision: 00900539    Serial number: 2009289.07    
   Shop #: WSC 31414 000 00000
   VCID: 4894E1E6389EDF0F11-5120

No fault code found.

-------------------------------------------------------------------------------
Address 76: Park Assist        Labels: Redir Fail!
   Part No: 7L0 919 283 F
   Component: 0E Einparkhilfe     1107  
   Shop #: WSC 00000 000 00000
   VCID: 397294227374B6879E-513C

No fault code found.

End-------------------------(Elapsed Time: 09:50)--------------------------
 
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   #2  

PetrolDave

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I'm still looking for a good wiring diagram for 2006 xenons so I can actually test voltages and find the short to ground (if that is still true, and not something that just needs to be re-coded or reset). Recommendations?
erWin?

Buy a short subscription, enter your Vin and download every document relevant to your T1 - even if you don't need them now you may need them in the future :thumbs:
 
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   #3  

hallkbrdz

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Yes, I have the erWin wiring diagrams, although they are wrong in regards to the HID bulb. Pins 6 and 8 are for the halogen high beam, not the HID. That of course is from the jumper from the J567 Left Headlight Range Control Module.

I don't see that anything is wrong ground wise that would set off that code - at least now. Is that a stored fault that I somehow need to clear? If not - where does that come from?

Below is what I traced out, and the Volts column shows what I found at each pin with the headlights on in the high-beam mode with the headlight module disconnected.

Code:
Pin		Black 14	        White 12	        Size Volts	Actually goes to
1		blk			blk			0.35	     6		Ctrl - J567 Left Headlight Range Control Module - Headlight Range Adjustment Connection 
2		blk			blk			0.75	     14	Ctrl - +v J567 Left Headlight Range Control Module - Plus Connection 3
3		orange		orange		0.5	     0.18	Blk +v - N395 Left Headlight Reflector Adjustment Solenoid
4		li			li			0.5	     14	Blk +v - M1 Left Parking Light
5		red			red			0.75	     0.39	Ctrl GND - J567 Left Headlight Range Control Module - From J519 Vehicle Electrical System
6		orange		orange		1.5	     0.19	(1) Blk +v - M30 Left High Beam Headlight (passing)
7		brn			brn			0.5	     0		Ctrl GND - J567 Left Headlight Range Control Module
8		brn			brn			1.5	     0		(1) Brn GND - M30 Left High Beam Headlight  (passing) and N395 Left Headlight Reflector Adjustment Solenoid
9		li			li			0.75	     0.13	Blk +v M5 Left Front Turn Signal Light
10		brn			brn			1.0	     0		Brn GND - M5 Left Front Turn Signal Light and M1 Left Parking Light
11		blk			blk			0.35	     9.16	Ctrl - J567 Left Headlight Range Control Module - OBD Connection 1
12		blk			blk			0.35	     11.52	Ctrl - J567 Left Headlight Range Control Module - Headlight Range Adjustment Connection
13		Unused		N/A
14		Unused		N/A

Notes:

Voltage reference is to Pin 10 as ground

(1) erWin shows J343 Left High-intensity Gas Discharge Lamp Control Module
J343 Left High-intensity Gas Discharge Lamp Control Module connects through J567 Left Headlight Range Control Module
 
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   #4  

hallkbrdz

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I tried swapping the right headlight into the left side - no surprise, no low beam.

I then measured the same pins on the right side. Pin voltages side by side:

Code:
Pin - Left / Right
1 - 6 / 6
2 - 14 / 14
3 - 0.18 / 14
4 - 14 / 14
5 - 0.39 / 14
6 - 0.19 / 0.05
7 - 0 / 0 - Ground
8 - 0 / 0 - Ground
9 - 0.13 / 0.18
10 - 0 / 0 - Reference ground 
11 - 9.16 / 9.12
12 - 11.52 / 11.52
So to activate the low beam I should have +14 on 3 and 5 where I now have what look like low float voltages - not shorts. So the J519 Vehicle Electrical System Control Module seems suspect.

I see in erWin references to a self diagnostic. Can I do that with VCDS?

If I do need to replace the J519, which I believe is the BCM 7L6937049(N) - where would I code that?

Thanks in advance
 
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   #5  

MartinsX

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Maybe check fuses and wiring first ;)
 
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hallkbrdz

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Maybe check fuses and wiring first ;)
I did. The fuses are fine (verified with a VOM) and all of the wiring was replaced with new, except for the main harness. Based on the voltage values, nothing is actually shorted to ground. Before with the cracked and missing insulation - sure.

For now I'm just going to splice in a relay in the headlight tray jumper triggered by the running lights for 3 and 5 to supply voltage for the low beam.
 
   #7  

hallkbrdz

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Resolved. It was a bad contact on the left #35 fuse. Checked good (12v both sides), but found it as I got desperate and removed and reinserted every single fuse. Figures...

35 15A Vehicle electrical system control module – Headlamps (high/low beam)
 
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