Short to GND - VW Golf Mk6 TDI

[ak77]

Hi team, can someone please assist as I'm stuck with Two electrical issues after replacing Coolant Pump-02.
I'm getting the same error as was the original cause for me doing the repairs. Now I have an additional issue of not having my radiator fans operating.
I have tested both on 12V battery and they work just fine.

Any Ideas? Please advise

Sunday,24,March,2024,08:03:06:41771
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64(VMWare)
VCDS Version 23.11.0.0
Data version: 20231027 DS351.0
www.Ross-Tech.com


VIN: WVWZZZ1KZ9W506232   License Plate:


Chassis Type: 1K-VW36 (1K0)
Scan: 01 02 03 08 09 15 16 17 19 25 42 44 46 52 56 62 72

VIN: WVWZZZ1KZ9W506232   Mileage: 196020km-121801miles

01-Engine -- Status: Malfunction 0010
02-Auto Trans -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
08-Auto HVAC -- Status: Malfunction 0010
09-Cent. Elect. -- Status: OK 0000
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
25-Immobilizer -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: OK 0000
46-Central Conv. -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
56-Radio -- Status: OK 0000
62-Door, Rear Left -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
 
-------------------------------------------------------------------------------
Address 01: Engine (CBA)       Labels: 03L-906-022-CBA.clb
   Part No SW: 03L 906 022 LB    HW: 03L 906 022 G
   Component: R4 2.0l TDI G000AG  9979 
   Revision: 13H01---    Serial number:              
   Coding: 0001078
   Shop #: WSC 18688 039 403977
   VCID: 70EFE3E06300381133-8025
   VINID: 9E69EAAAA05BA899C5006083084195CD38

2 Faults Found:
001681 - Fan 1 Control Circuit
               P0691 - 000 - Short to GND
             Freeze Frame:
                    Fault Status: 01100000
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 255
                    Mileage: 196023 km
                    Time Indication: 0
                    Date: 2018.08.15
                    Time: 22:54:15

             Freeze Frame:
                    RPM: 0 /min
                    Speed: 0.0 km/h
                    Temperature: 36.0°C
                    Temperature: 54.9°C
                    Temperature: 22.5°C
                    Lambda: 9.5 %
                    Lambda: 0.0 %

009756 - Coolant Pump 2
               P261C - 000 - Short to GND
             Freeze Frame:
                    Fault Status: 01100000
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 255
                    Mileage: 196023 km
                    Time Indication: 0
                    Date: 2018.08.15
                    Time: 22:54:56

             Freeze Frame:
                    RPM: 805 /min
                    Speed: 0.0 km/h
                    Voltage: 12.39 V
                    Lambda: 79.7 %
                    Bin. Bits: 10011111
                    Bin. Bits: 00000000
                    Temperature: 35.1°C

Readiness: 0 0 0 0 1

-------------------------------------------------------------------------------
Address 02: Auto Trans        Labels: 02E-927-770.clb
   Part No SW: 02E 300 052     HW: 02E 927 770 AJ
   Component: GSG DSG AG6     440 1913 
   Revision: 04844002    Serial number: 00000901080181
   Coding: 0000020
   Shop #: WSC 01357 011 00200
   VCID: 51A94664C84A11191C-8005

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels:. 1K0-907-379-60EC1F.clb
   Part No SW: 1K0 907 379 BE    HW: 1K0 907 379 BE
   Component: ESP MK60EC1   H31 0108 
   Revision: 00H31001   
   Coding: 163B400D09220000680D02E7901B0082B50000
   Shop #: WSC 00028 028 00001
   VCID: 76E3D5F8C1641621E9-8023

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J255)       Labels:| 5K0-907-044.clb
   Part No SW: 5K0 907 044 AJ    HW: 5K0 907 044 AJ
   Component: Climatronic   130 0305 
   Revision: 00002001   
   Coding: 0000000000
   Shop #: WSC 00000 000 00000
   ASAM Dataset: EV_Climatronic A01001
   ROD: EV_ClimaAutoBasis_VW36.rod
   VCID: 73E5ECECDA160309CE-8027

1 Fault Found:
13701888 - Function Restriction due to Faults in Other Modules
          U1113 00 [00001001] - -
          [New feature! Extended UDS fault detail is only supported by current gen. interfaces]
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 6
                    Fault Frequency: 1
                    Reset counter: 42
                    Mileage: 196023 km
                    Date: 2024.03.24
                    Time: 22:59:12


-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 1K0-937-08x-09.clb
   Part No SW: 1K0 937 086     HW: 1K0 937 086
   Component: BCM PQ35  M   020 0358 
   Revision: 00020000   
   Coding: 46180A3A902518C044080080140081E441510088436D8960648000000000
   Shop #: WSC 01357 011 00200
   VCID: 6DD1FA94B432D5F918-8039

   Subsystem 1 - Part No: 1K2 955 119 E  Labels: 1KX-955-119.CLB
   Component: Wischer 06020  21  0501
   Coding: 009795

   Subsystem 2 - Part No: 1K0 955 559 AH  Labels: 1K0-955-559-AG.CLB
   Component: RLS 180209 05  54  0402
   Coding: 0330AD

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 5K0-959-655.clb
   Part No SW: 5K0 959 655     HW: 5K0 959 655
   Component: AirbagVW10    033 0604 
   Serial number: 003C2D093S1S   Dataset Number: v00300535K0 0001
   Coding: 00003134
   Shop #: WSC 01357 011 00200
   ASAM Dataset: EV_AirbaVW10SMEVW360 A01009
   ROD: EV_AirbaVW10SMEVW360.rod
   VCID: 77FDD8FCCE6E6F29F2-8023

   Crash sensor for side airbag: driver side:
   Subsystem 1 - Part No SW: 5K0 959 354     HW: 5K0 959 354
   Component: S.Sens.Fahr.V  U01 ----
   Serial number: 5D634044ZZZZZZZZZZZZ

   Front Passenger's Side Airbag Crash Sensor:
   Subsystem 2 - Part No SW: 5K0 959 354     HW: 5K0 959 354
   Component: S.Sens.Beif.V  U01 ----
   Serial number: 044E2544ZZZZZZZZZZZZ

   Rear Side Airbag Crash Sensor (on driver's side):
   Component: S.Sens.Fahr.H  --- ----
   Serial number: 0208220BZZZZZZZZZZZZ

   Passenger side rear thorax airbag crash sensor:
   Component: S.Sens.Beif.H  --- ----
   Serial number: 3A41204BZZZZZZZZZZZZ

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel        Labels: 1K0-953-549-MY9.lbl
   Part No SW: 1K0 953 549 CD    HW: 1K0 953 549 CD
   Component: J0527           055 0111 
   Coding: 0001532
   Shop #: WSC 01357 011 00200
   VCID: 76E3D5F801641621E9-8023

   Subsystem 1 - Part No: 3C8 959 537 B  Labels: 3C8-959-537.CLB
   Component: E221__MFL-TAP   H4ÿ 0021 
   Coding: 00000226
   Shop #: WSC 00000 

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:| 5K0-920-xxx-17.clb-SRI1
   Part No SW: 5K0 920 870 C    HW: 5K0 920 870 C
   Component: KOMBI         H21 KOMBI         H21 00290029 
   Serial number: 00000000000000
   Coding: 170B00
   Shop #: WSC 01357 011 00200
   ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A04020
   ROD: N/A
   VCID: 2D513A947CB215F958-8079

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway        Labels:. 1K0-907-530-V4.clb
   Part No SW: 1K0 907 530 S    HW: 1K0 907 951
   Component: J533__Gateway   H16 0210 
   Revision:   H16       Serial number: 3400K0920410C6
   Coding: ED807F06000202000003
   Shop #: WSC 01357 011 00200
   VCID: 377D18FC46EEAF2932-8063

No fault code found.

-------------------------------------------------------------------------------
Address 25: Immobilizer (J334)       Labels:. 5K0-920-xxx-25.clb
   Part No SW: 5K0 920 870 C    HW: 5K0 920 870 C
   Component: IMMO          H21 0029 
   Serial number:              
   ASAM Dataset: EV_Immo_UDS_VDD_RM09 A03002
   ROD: EV_Immo_UDS_VDD_RM09_VW21.rod
   VCID: 2D513A947CB215F958-8079

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver        Labels:. 1K0-959-701-MIN3.clb
   Part No SW: 1K0 959 701 AM    HW: 1K0 959 701 AM
   Component: Tuer-SG         008 2042 
   Coding: 0000692
   Shop #: WSC 01357 011 00200
   VCID: 79F9DEC4307A795984-802D

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist        Labels: 1K0-909-14x-GEN3.clb
   Part No: 1K0 909 144 E
   Component: EPS_ZFLS Kl. 70     2501 
   Revision: 00H15000   
   Shop #: WSC 01357 011 00200
   VCID: 2C5737908FA81CF14F-8079

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass.        Labels:. 1K0-959-702-MIN3.clb
   Part No SW: 1K0 959 702 AM    HW: 1K0 959 702 AM
   Component: Tuer-SG         008 2042 
   Coding: 0000692
   Shop #: WSC 01357 011 00200
   VCID: 7AFBC1C8357C72418D-802F

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio (J503)       Labels:. 5M0-035-1xx-56.clb
   Part No SW: 6RD 035 187 B    HW: 6RD 035 187 B
   Component: Radio         541 5814 
   Revision: --------    Serial number: VWZZZ4H6290655
   Coding: 16000440040005
   Shop #: WSC 127395 840 08317
   VCID: 46836538F104C6A1B9-8013

No fault code found.

-------------------------------------------------------------------------------
Address 62: Door, Rear Left        Labels:. 1K0-959-703-GEN3.clb
   Part No SW: 1K0 959 703 AL    HW: 1K0 959 703 AL
   Component: Tuer-SG         007 2009 
   Coding: 0000144
   Shop #: WSC 01357 011 1012552
   VCID: 7AFBC1C8357C72418D-802F

No fault code found.

-------------------------------------------------------------------------------
Address 72: Door, Rear Right        Labels:. 1K0-959-704-GEN3.clb
   Part No SW: 1K0 959 704 AL    HW: 1K0 959 704 AL
   Component: Tuer-SG         007 2009 
   Coding: 0000144
   Shop #: WSC 01357 011 1012552
   VCID: 7BF5C4CC3A464B4996-802F

No fault code found.

End-------------------------(Elapsed Time: 02:20)--------------------------

 

[Uwe]

A "Short to GND" fault code on an actuator is often due to a missing +12V on the other side of the actuator. You'll want a multimeter and a wiring diagram to trouble-shoot these.

-Uwe-

 

[ak77]

A "Short to GND" fault code on an actuator is often due to a missing +12V on the other side of the actuator. You'll want a multimeter and a wiring diagram to trouble-shoot these.

-Uwe-

So you think this points to a direct short to ground in the actuator's control system. What control system?

I'm a bit confused about getting the below error:

13701888 - Function Restriction due to Faults in Other Modules
U1113 00 [00001001] - -

 

[Uwe]

So you think this points to a direct short to ground in the actuator's control system.

No. A missing +12V is not the same as a direct short to ground.

Most actuators are low-side switched by the control module they're connected to. They have +12V on one side, and the control module turns the actuator on by connecting the other side to ground. If +12V is missing from the other side of the actuator, due to something like a blown fuse, a broken wire, a connector that isn't plugged in, or a relay that isn't closing, then the control module sees that as a short to ground on the respective output.

I'm not saying that's necessarily what's going on here, but it's quite common. In any case, you're going to need a multimeter and a wiring diagram to trouble-shoot this further.

-Uwe-

 

[ak77]

Most o

No. A missing +12V is not the same as a direct short to ground.

Most actuators are low-side switched by the control module they're connected to. They have +12V on one side, and the control module turns the actuator on by connecting the other side to ground. If +12V is missing from the other side of the actuator, due to something like a blown fuse, a broken wire, a connector that isn't plugged in, or a relay that isn't closing, then the control module sees that as a short to ground on the respective output.

I'm not saying that's necessarily what's going on here, but it's quite common. In any case, you're going to need a multimeter and a wiring diagram to trouble-shoot this further.

-Uwe-

Do you know if these fans have a control module built-in or if this will be something separate on the other side of the firewall?

 

[ak77]

I have now tested the wires and replaced the Fan Control Module with a new one, but have the same result.
What else can I be looking at? Having recently replaced the ABS module could it be some issue with interference?

 

[ak77]

The diagnostic scan of your vehicle's Auto HVAC system indicates a fault with the following details:

• Fault Code: 13701888
• Fault Description: Function Restriction due to Faults in Other Modules
• Fault Code Description: U1113 00 [00001001]
• Status: Confirmed - Tested Since Memory Clear
• Freeze Frame Data:
  • Fault Priority: 6
  • Fault Frequency: 3
  • Reset counter: 46
  • Mileage: 196119 km
  • Date: 2127.14.31
  • Time: 00:06:30

 

[PatQ3]

I am relatively new here, but I would suggest that you set aside the HVAC issue for now and focus on tracing the shorts. Because the A/C puts a strain on the engine, and because your cooling system has issues, the computer might be limiting the A/C from working (to try to keep your car from overheating). I suspect that when you solve the fan and water pump issue your HVAC issue should clear (fingers crossed). Just to give you a couple of ideas on your short to ground issue (assuming you've checked the usual fuse boxes for blown ones), I've seen that some models have an additional fuse in the engine bay (aside from the fuse box). Here is an example from an earlier thread... https://forums.ross-tech.com/index.php?threads/9188/ Also, you might want to research your FCM for condition and what it controls (it could be a source of trouble as well for both of your shorts)...

 

[ak77]

I am relatively new here, but I would suggest that you set aside the HVAC issue for now and focus on tracing the shorts. Because the A/C puts a strain on the engine, and because your cooling system has issues, the computer might be limiting the A/C from working (to try to keep your car from overheating). I suspect that when you solve the fan and water pump issue your HVAC issue should clear (fingers crossed). Just to give you a couple of ideas on your short-to-ground issue (assuming you've checked the usual fuse boxes for blown ones), I've seen that some models have an additional fuse in the engine bay (aside from the fuse box). Here is an example from an earlier thread... https://forums.ross-tech.com/index.php?threads/9188/ Also, you might want to research your FCM for condition and what it controls (it could be a source of trouble as well for both of your shorts)...

Thanks for the input and advice. I'm not concentrating on the HVAC but I'm noting the protection issue fault due to other modules being faulty.

The fuses are all OK,
No damaged wires, all are perfectly grounded.
Voltage 12+ evident and bring power
Fans are in working order (activate direct battery power supply)

The interesting thing is the Secondary Coolant Pump at the bottom of the engine is showing an identical error as the Fans that run on different cable routes.

The only two things that were done on the car that I know of, is the ABS module was exchanged and reprogrammed with identical long code.
RCD360 unit was installed and separated Audio sensors were installed on the rear bumper. The car drove fine for 2 months after the last ABS changeover.

VCDS won't let me even get in the circuit to manually test the Fans.
The fans should be coming on after I turn on the AC but don't AC Runs fine and perfectly cold with no loss of power or dropped temp, in fact, more colder.
Just the HVAC is throwing priority 6 Error.

Any other ideas are welcome.

Thanks in advance

 

[PatQ3]

Well that sounds frustrating. Maybe take a look at this 7min video and see if it offers any help. Although he has the opposite issue in that his fan just won't ever turn off, the guy is does a diagnostic on the FCM (fan control module) showing some of the wiring and how he does the checks on it to see if it's faulty...

 

[ak77]

Well that sounds frustrating. Maybe take a look at this 7min video and see if it offers any help. Although he has the opposite issue in that his fan just won't ever turn off, the guy is does a diagnostic on the FCM (fan control module) showing some of the wiring and how he does the checks on it to see if it's faulty...

I think it has to be something else playing here, as I have new fans installed with the new module. I have the same short on the Coolant Pump 2. Also replaced new. How would they be related, what controls the Coolant Pump 2?

 

[PatQ3]

How about this for an idea (I've done similar in the past for diagnosing components to figure out where they line up in the daisy chain of signals)... since the fan issue is new from when you installed the new pump (and the old pump had its own same issue without the fan error), if you can reach the electrical plug connector for the new pump easy enough (and if you still have the old pump), you might want to try unplugging the new pump, plugging the old pump into the connector, turning the ignition one click, clear codes and run VCDS to see if the open circuit issue with the fan goes away. At least then you can know if the new fan error is potentially related to some fault with the new pump and can go from there.

 

[ak77]

How about this for an idea (I've done similar in the past for diagnosing components to figure out where they line up in the daisy chain of signals)... since the fan issue is new from when you installed the new pump (and the old pump had its own same issue without the fan error), if you can reach the electrical plug connector for the new pump easy enough (and if you still have the old pump), you might want to try unplugging the new pump, plugging the old pump into the connector, turning the ignition one click, clear codes and run VCDS to see if the open circuit issue with the fan goes away. At least then you can know if the new fan error is potentially related to some fault with the new pump and can go from there.

yes, I have done so the second time. This is when I get the error on the HVAC side of things warning me about other modules.
I'm just not sure what tells the Coolant pump 2 to operate ( what its purpose ), ECU could be the issue ? Guessing here .

 

[PatQ3]

Here's a discussion I found that you might find helpful (or not) in the sequence of things. Sounds like the Aux Pump might be controlled by your fan's FCM, at least it is in some models (https://www.vwvortex.com/threads/auxiliary-water-pump-operation.7068842/)

 

[nugentp]

I was looking for a WD for the CBAB engine code apparent on that Golf from Singapore but its not available to me - on the basis of 4-cyl 2.0 TDi 103kW one possible cousin is the BMM, but others may have better insight. I looked a different way and found the CBAB diagrams - lets see if any clues can be found.

 

[nugentp]

Most obvious thing to check first is Fuse SB24 - that protects coolant pump 2 (V17) and the rad fan controller (J293).
Should be a 10A fuse. 'SB' fuses in the plenum box.

 

[PatQ3]

Have you tried to look up what's available from Erwin Audi? (https://erwin.audiusa.com/erwin/showHome.do) I believe this is VW's official site for Audis (I don't know if they offer a similar access point for VWs, but if you know your sister car from Audi (at least with the engine type) you can try to see if you can pull that information down). For $35 you can get a daily pass and download anything unlimited you can find in PDF form. I downloaded my car's full data (wiring, eng, trans, service, repairs, interior, etc).

 

[nugentp]

I have an old copy of ELSAWIN - a treasure trove for anything sold in Europe up to 2017. I used ERWIN for other stuff of course.

 

[Bruce]

VAG offers erwin on their brands - in the How To at the top of every page - you'll find a link to the Official Factory Repair Information.

 

[nugentp]

Easiest way to check SB24 is to see if 12V is present on the blue/red or black wire at pin #2 on the 4-pin plug which connects to your J293 radfan controller. I also see a mistake in the diagram referencing T14a/6 which should be T14a/12 where it connects to the secondary water pump.

I am assuming pin #3 is an active low PWM signal from the ECU that determines the intensity of the fan operation by way of J293. Pin #1 is big fat 12V supply on the red wire while pin #4 is big fat 0V earth on the brown wire - pretty normal stuff if you are familiar with VAG wire colouring norms.