Resolved Terminal 30 woes

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O

oldo

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G'day,
New to posting but old reader of others probs for proactive reasons.
Touareg v10 7l 2003 117k: throwing dtc 001598-001 (voltage upper limit exceeded) on address 34 only, already checked fuses, relays, relevant grounds to the circuit, alternator and voltage regulator, DFM and L volts and j197 inside and out; all good. New oem compressor fitted (working), no other oem or aftermarket electricals added. Nowhere on the car can I find an 18+v reading, thought I'd found a spike at one point, but turned out to be a dmm battery about to see its last days. Any and all advice gratefully accepted. Scan below is from yesterday on a fully charged battery with charger attached and includes measuring block readings at end.
Code: 
Monday,30,January,2023,15:20:38:31167
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 22.10.0.1 (x64)  HEX-V2 CB: 0.4623.4
Data version: 20221026 DS344.0
www.Ross-Tech.com

Dealer/Shop Name: BD5449C69E7ABAFD

VIN: WVGZZZ7LZ3D015002   License Plate:
Mileage: 217990km-135452mi   Repair Order: 30011st



--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


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: WVGZZZ7LZ3D015002   Mileage: 217990km-135452miles
-------------------------------------------------------------------------------

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


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: WVGZZZ7LZ3D015002   Mileage: 217990km-135452miles
-------------------------------------------------------------------------------
Address 01: Engine        Labels: Redir Fail!
   Part No SW: 070 906 016 D    HW: 028 101 073 6
   Component: V10 5,0L EDCG000AGMª5264 
   Coding: 0000127
   Shop #: WSC 07980 995 47021
   VCID: 117FB82D6D7EE17374C-5160
   VINID: 9E65EAAAA1DCA8350004500008CD1061DA

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

-------------------------------------------------------------------------------
Address 02: Auto Trans        Labels: 09D-927-750.clb
   Part No: 09D 927 750 E
   Component: AL 600 6Q           0318 
   Coding: 0004136
   Shop #: WSC 31414 000 00000
   VCID: 30391DA9C634C87B5B2-5160

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: 382925892E44103B132-5160

No fault code found.

-------------------------------------------------------------------------------
Address 05: Acc/Start Auth.        Labels: 3D0-909-13x-05.lbl
   Part No SW: 3D0 909 137 F    HW: 3D0 909 137 F
   Component: 1N Kessy            6850 
   Revision: 00H24072    Serial number: VWZ3Z0C3044535
   Coding: 0147688
   Shop #: WSC 07980 995 47021
   VCID: 2A0D0FC1E0E8B2AB956-5160

   Subsystem 1 - Part No: XXXXXXXXXXX
   Component: ELV                 XXXX

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: 7L6-907-040.clb
   Part No: 7L6 907 040 D
   Component: CLIMAtronic R/L   X 2714 
   Coding: 0001020
   Shop #: WSC 31414 000 00000
   VCID: 313F18ADCD3EC17354C-5160

8 Faults Found:
02100 - Footwell Flap Motor (V261)
            000 - -
00657 - Positioning Motor for Central Vents (V102)
            000 - -
01596 - Motor for Outside/Recirculated Air Flap (V154)
            000 - - - Intermittent
00710 - Defroster Flap Positioning Motor (V107)
            000 - - - Intermittent
01592 - Air Quality Sensor (G238)
            014 - Defective
01336 - Company Data Bus for Comfort System
            004 - No Signal/Communication - Intermittent
01299 - Diagnostic Interface for Data Bus (J533)
            008 - Implausible Signal - Intermittent
01207 - Control Module for Auxiliary Heater (J364)
            004 - No Signal/Communication

-------------------------------------------------------------------------------
Address 09: Cent. Elect.        Labels:. 7Lx-937-049-V1.clb
   Part No: 7L6 937 049 L
   Component:                     2702 
   Coding: 0113916
   Shop #: WSC 31414 000 00000
   VCID: 45D75C7D69B67DD3984-5160

No fault code found.

-------------------------------------------------------------------------------
Address 11: Engine II        Labels: Redir Fail!
   Part No SW: 070 906 016 D    HW: 028 101 073 6
   Component: V10 5,0L EDCG000AGSª5264 
   Coding: 0000127
   Shop #: WSC 08770 995 60151
   VCID: 117FB82D6D7EE17374C-5160

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags        Labels: 3D0-909-601.lbl
   Part No: 3D0 909 601 B
   Component:  4 Airbag 8.4E+ H07 0641 
   Coding: 0008244
   Shop #: WSC 00000 000 00000
   VCID: 221DE7E198D86AEBDD6-5160

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel        Labels: 7L6-953-549.lbl
   Part No: 7L6 953 549 B
   Component: Lenksäulenmodul     3201 
   Coding: 0000032
   Shop #: WSC 31414 000 00000
   VCID: 3E2533910C602E0BD9E-5160

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments        Labels: 7L6-920-xxx-7LA.lbl
   Part No: 7L6 920 880 C
   Component: KOMBIINSTRUMENT RB4 2810 
   Coding: 0007111
   Shop #: WSC 31414 000 00000
   VCID: 372B26B5235A1F431A8-5160

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway        Labels: 6N0-909-901-19.clb
   Part No: 6N0 909 901
   Component: Gateway K<>CAN      0101 
   Coding: 0000006
   Shop #: WSC 07980 995 47021
   VCID: 70B9DDA906B4887B1B2-5160

1 Fault Found:
01207 - Control Module for Auxiliary Heater (J364)
            004 - No Signal/Communication

-------------------------------------------------------------------------------
Address 1C: Position Sensing        Labels: 7L6-919-879.lbl
   Part No: 7L6 919 879
   Component: JCI PathPoint       1600 
   Shop #: WSC 00000 000 00000
   VCID: 04518179220C84DBCFA-5160

No fault code found.

-------------------------------------------------------------------------------
Address 22: AWD        Labels: None
   Part No: 0AD 927 755 BE
   Component: TRANSFERCASE        0122 
   Shop #: WSC 00000 000 00000
   VCID: 7F5B0E954BEAE703928-5160

No fault code found.

-------------------------------------------------------------------------------
Address 29: Left Light        Labels: 3D0-909-157.lbl
   Part No: 3D0 909 157
   Component: EVG GDL+AutoLWR(l)  X012 
   Coding: 0000003
   Shop #: WSC 31414 000 00000
   VCID: 6695BBF1347056CB71E-513C

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: 0015521
   Shop #: WSC 08770 995 60151
   VCID: 382925892E44103B132-5160

1 Fault Found:
01598 - Drive Battery Voltage
            001 - Upper Limit Exceeded

-------------------------------------------------------------------------------
Address 36: Seat Mem. Drvr        Labels: None
   Part No: 7L6 959 257
   Component: Steuergerät         0201 
   Shop #: WSC 00000 000 00000
   VCID: 7EA5F3914CE0EE0B99E-5160

No fault code found.

-------------------------------------------------------------------------------
Address 37: Navigation        Labels: 7L6-919-887-CD.lbl
   Part No: 7L6 919 887 A
   Component:      Navigation     0623 
   Coding: 0000002
   Shop #: WSC 31414 000 00000
   VCID: 44D14179628C44DB8FA-5160

No fault code found.

-------------------------------------------------------------------------------
Address 39: Right Light        Labels: 3D0-909-158.lbl
   Part No: 3D0 909 158
   Component: EVG GDL+AutoLWR(r)  X012 
   Coding: 0000003
   Shop #: WSC 39542 111 53260
   VCID: 678BB6F5337A4FC34A8-5160

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv.        Labels: 7L0-959-933.lbl
   Part No: 7L0 959 933 C
   Component: JY HSG              0102 
   Coding: 0000085
   Shop #: WSC 07980 995 47021
   VCID: 3C2139991A7C3C1BF7A-4B00

   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   0020

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

1 Fault Found:
00914 - Window Regulator Switch; Rear Left; Driver (E53)
            007 - Short to Ground

-------------------------------------------------------------------------------
Address 47: Sound System        Labels:
   VCID: 55F78C3D9C06CD53E84-5160
   Note: Excessive Comm Errors


-------------------------------------------------------------------------------
Address 56: Radio        Labels: 7L6-035-186-CD.lbl
   Part No: 7L6 035 186 A
   Component:        Radio        0623 
   Coding: 0005057
   Shop #: WSC 31414 000 00000
   VCID: 313F18ADCD3EC17354C-5160

No fault code found.

-------------------------------------------------------------------------------
Address 68: Wiper Electr.        Labels: 7L0-955-119-V1.clb
   Part No: 7L0 955 119 F
   Component: Front Wiper         2416 
   Coding: 0000004
   Shop #: WSC 00000 000 00000
   VCID: 372B26B5235A1F431A8-5160

No fault code found.

-------------------------------------------------------------------------------
Address 6E: Ctrl Head Roof        Labels: None
   Part No: 7L6 919 044 E
   Component: DACHDISPLAY         0529 
   Revision: 00000529    Serial number: 2009266.01   
   Shop #: WSC 00000 000 00000
   VCID: 392F208D154E0933ECC-5160

1 Fault Found:
02607 - Control Module (Relay?) for Aux. Water Heater (J737)
            004 - No Signal/Communication

End----(Elapsed Time: 08:32, VBatt start/end: 12.0V/12.0V. VIgn 12.0V)-----

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


                Address 34: Level Control  (7L6 907 553 B)

15:44:52
  11.52 V   Supply Voltage (Terminal 15)
  18.36 V   Supply Voltage (Terminal 30)
  0.0 km/h   Vehicle Speed
  Term 50 Off   Terminal 50 (Starter)
  4.99 V   Sensor Supply Voltage (Right)
  4.95 V   Sensor Supply Voltage (Left)
  Not Oper.   Level Control Button (E388)
  Not Oper.   
  Relay OFF   Compressor Relay (J403) Status
  -89.0 mm   Left Front Height Deviation
  -83.0 mm   Right Front Height Deviation
  -64.0 mm   Left Rear Height Deviation

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


                Address 34: Level Control  (7L6 907 553 B)

15:46:21
  Term 50 Off   Terminal 50 (Starter)
  -64.0 mm   Right Rear Height Deviation
  41.0   Left Front (G78) Absolute Height
  60.0   Right Front (G289) Absolute Height
  67.0   Left Rear (G76) Absolute Height
  76.0   Right Rear (G77) Absolute Height
  9.0°C   Compressor Temp. (G290)
  0.00 bar   Reservoir/Tank Pressure (G291)
  OFF   Drain/Relief Valve (N111)
  OFF   Accumulator Valve (N311)

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


                Address 34: Level Control  (7L6 907 553 B)

15:47:17
  Term 50 Off   Terminal 50 (Starter)
  5080   System Status
  5080   System Status

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


                Address 34: Level Control  (7L6 907 553 B)

15:47:41
  Term 50 Off   Terminal 50 (Starter)
  5080   System Status
  5080   System Status

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


Address 34,7L6 907 553 B,recoded (Short coding),from,0015521,to,0015521,(08770/995/60151),

--------------------------------------------------------------------------------
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                Address 09: Cent. Elect.  (7L6 937 049 L)

15:52:14
  8.0   CAN selector lever information
  OFF   Headlight aim control malfunct
  12.45 V   Starter battery

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


                Address 19: CAN Gateway  (6N0 909 901 )

15:55:58
  Engine 1   Engine Electronics
      Battery Management
  El.Ign.Lock 1   Electrical Ignition Lock
  N/A   Engine Electronics
  N/A   Brake Electronics (J104)
  N/A   Instrument Cluster (J285)
 
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Uwe

Uwe

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Hi and welcome.

Have you looked at MVB 001 in the module itself? It shows what it perceives the voltage (on both terminals 15 and 30) there. Physical reality is that it cannot be higher than actual battery / alternator voltage. If it shows higher than that, something is wrong with the voltage sensing circuit in the module.

-Uwe-
 
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Hi Uwe and thanks for the reply/welcome,
I'll do MVB 001 tomorrow, but your analysis the module might be toast is possibly good; the vehicle was parked parallel to 60+klik winds for a week or more and j197 worked overtime to keep the car level.
I'm just trying to avoid the vw cashcow syndrome; if it don't work buy a new (vw) one; this car has not seen or experienced a dealership, vw tech or indie tech in 17 years, I'd like to keep that in tact.
Cheers
oldo
 
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oldo

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Hi Uwe,
Showing the same Vs as the original scan, pulled the pcb again to try and workout where the stepdown circuit on the board is; needle in a haystack comes to mind sans printed circuit diagram. I'll try spoofing it with a couple of Buck converters 12v to 5v and see what pops up.
cheers
oldo
 
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oldo

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slight edit, only need to try one buck on pin4 which is the term30 side.
 
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oldo

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Partial success (the MIL now shows suspension settings and changes with input at selector, but fails with dtc after minutes still 01598 of 18.36v). Unsure which chip or voltage regulator ic is reporting overvoltage of exactly 6v or which chip is terminal 30 and which is terminal 15, assuming terminal 30 is lefthand side chip (it's the closest to the j197 terminal 30 pin in) as you look down at it. Anyone know which pin is RESET pin on xc505503vp8 0k50e (the chips used on the board) I'll try and peg it to ground, charge the board and force the reset... hopefully. Or even better a pinout diagram. Can only assume the board suffered a brown-out at some point and disrupted the
firmware or regulator ic circuit. Cannot desolder chip as the pins terminate at the board not through. Looking at the board it's also possible that it has one or more voltage regulators soldered through so will test and see if they are reporting erroneous voltages to the circuit and try to see if replaceable.
 
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Uwe

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I rather doubt that the problem here is a voltage regulator. Terminal 30 is simply un-switched system (battery) voltage. This is likely fed into a simple resistor divider and from there to an A2D pin on the microcontroller running this module. If one of the resistors in the divider goes out of spec or has a bad solder connection, then the voltage reading will be off.

-Uwe-
 
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oldo

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Makes for an interesting afternoon; thinking back to when I fitted the new compressor, it fired up normally for a minute then reverted to its fault state so could well be a resistor at the root of the prob because the mcu is reporting actual state of the system. If it is, don't see a way of repairing as soldering grains of rice is not one of my fortés, but finding it will kill an hour or two; help if I could find a pcb schematic/diagram but my research has turned up nothing from ate, hella or sachs
 
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oldo

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ok, got two parellel surface mounted diodes in a cluster of components (unknown, same size as rock salt and grains of rice) just after the relay one that has continuity both ends and 12.66v at both ends. Assuming it's shot. Hard to follow where it feeds as some of the pcb has conformal coating which hides the component reference and others you need an electron microscope to read. Will try mouser for the equivalent piece... more fun than buying another j197 and cheaper!
 
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RESOLVED. While taking voltages on the board I unintentionally shorted out the board from the first NEC relay to the first group of diodes. After some messsing around I was able to solder in a bridge to replace the shorted out area, tested the board and no immediate probs but was still reverting to fault after a couple of minutes. Removed board from circuit overnight. This morning the suspension had lifted car to basic setting, how remains a mystery as j197 was out of circuit, but have to assume the short caused shock reset and when I tested the board with engine running the day before the MIL fault was a remnant, and it was charging the resevoir with the MIL showing. Prior to yesterday the resevoir was flagging 0bar, will scan later today and send vcds scan. Probably not the best way to resolve the fault, but hey it's working!
 
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