Audi A3 Air Con Help

   #1  

judge360

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Hi everyone, I have an Audi A3 with an issue with the air conditioning system. VCDS gives me the fault code 00735 potentiometer position sensor for recirculation flap (G143). I need the location of this potentiometer, I believe its the V113 one I need I have been to the scrapyard today and tried all the one on the passenger side, however the code comes straight back, there are 3 more motors located on the drivers side, Ive tried the bottom one and that didn't work so it must be one of the other two but it looks like the dash needs to come out to get them out? Does anyone have any idea which motor is the V113 or have a diagram of the air condition system and its components? Thanks
 
   #2  

Uwe

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Hi and welcome.

Please post an Auto-Scan for context. Audi has made A3s for more than 20 years now, and needless to say, they're not all the same. But even knowing the model year isn't enough, because in any given model year, they were equipped with different HVAC controllers depending on things like engine and trim level.

-Uwe-
 
   #3  

Jack@European_Parts

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It would be really wise to use the RTFB and WD component locations & to identify an actual component location, versus taking shit apart in the scrap yard to roll the diagnostic dice!


http://wiki.ross-tech.com/wiki/index.php/Official_Factory_Repair_Information

JPPSG
https://forums.ross-tech.com/showth...essional-Problem-Solver-Guide-quot-JPPSG-quot



518NAMZSQSL._SX425_.jpg
 
   #4  

judge360

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Hi and welcome.

Please post an Auto-Scan for context. Audi has made A3s for more than 20 years now, and needless to say, they're not all the same. But even knowing the model year isn't enough, because in any given model year, they were equipped with different HVAC controllers depending on things like engine and trim level.

-Uwe-

Hi I will have to get back to you with that on Monday unfortunately.
 
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judge360

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Jack@European_Parts

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Yup but you can do on the cheap and print to pdf to save coins....
 
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judge360

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Hi Ive managed to get the auto scan data, here it is.

Code:
Saturday,06,July,2019,11:26:59:63801
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 19.6.1.0 (x64)
Data version: 20190529 DS308.0
www.Ross-Tech.com


VIN: WAUZZZ8P67A157651   License Plate: 
Mileage: 254730km-158281mi   Repair Order: 



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


Chassis Type: 8P (1K0)
Scan: 01 03 08 09 15 16 17 19 25 42 44 46 47 52 56 62 72 77

VIN: WAUZZZ8P67A157651   Mileage: 254730km-158281miles

01-Engine -- Status: Malfunction 0010
03-ABS Brakes -- Status: Malfunction 0010
04-Steering Angle -- Status: OK 0000
08-Auto HVAC -- Status: Malfunction 0010
09-Cent. Elect. -- Status: Malfunction 0010
15-Airbags -- Status: Malfunction 0010
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: Malfunction 0010
25-Immobilizer -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: OK 0000
46-Central Conv. -- Status: Malfunction 0010
47-Sound System -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
56-Radio -- Status: Cannot be reached 1100
62-Door, Rear Left -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
77-Telephone -- Status: Malfunction 0010
 
-------------------------------------------------------------------------------
Address 01: Engine        Labels: 03G-906-016-BKC.clb
   Part No SW: 03G 906 021 LS    HW: 03G 906 021 AN
   Component: R4 1,9L EDC G000SG  9182  
   Revision: --H06---    Serial number: AUX7Z0G0FNQ0JT
   Coding: 0000071
   Shop #: WSC 66565 257 00032
   VCID: 7BFE2B823A1C5997CC-802E

3 Faults Found:
005658 - Glowplug for Cylinder 1 (Q10) 
               P161A - 000 - Open Circuit
             Freeze Frame:
                    Fault Status: 01110000
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 255
                    Mileage: 254436 km
                    Time Indication: 0
                    Date: 2019.06.30
                    Time: 10:38:30

             Freeze Frame:
                    RPM: 945 /min
                    Speed: 0.0 km/h
                    Load: 0.0 %
                    Voltage: 12.01 V
                    Bin. Bits: 00101100
                    Temperature: 13.5°C
                    Bin. Bits: 10110000

005661 - Glowplug for Cylinder 4 (Q13) 
               P161D - 000 - Open Circuit
             Freeze Frame:
                    Fault Status: 01110000
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 255
                    Mileage: 254436 km
                    Time Indication: 0
                    Date: 2019.06.30
                    Time: 10:38:30

             Freeze Frame:
                    RPM: 945 /min
                    Speed: 0.0 km/h
                    Load: 0.0 %
                    Voltage: 12.01 V
                    Bin. Bits: 00101100
                    Temperature: 13.5°C
                    Bin. Bits: 10110000

005660 - Glowplug for Cylinder 3 (Q12) 
               P161C - 000 - Open Circuit
             Freeze Frame:
                    Fault Status: 01110000
                    Fault Priority: 0
                    Fault Frequency: 3
                    Reset counter: 255
                    Mileage: 254436 km
                    Time Indication: 0
                    Date: 2019.06.30
                    Time: 10:38:43

             Freeze Frame:
                    RPM: 882 /min
                    Speed: 0.0 km/h
                    Load: 0.0 %
                    Voltage: 14.29 V
                    Bin. Bits: 00101100
                    Temperature: 13.5°C
                    Bin. Bits: 10110000

Readiness: 0 0 0 0 0 

-------------------------------------------------------------------------------
Address 03: ABS Brakes        Labels: 1K0-907-379-MK60-F.lbl
   Part No SW: 1K0 907 379 AC    HW: 1K0 907 379 AC
   Component: ESP FRONT MK60      0101  
   Revision: 00H11001    
   Coding: 0021121
   Shop #: WSC 06314 000 00000
   VCID: 73EE03A2124C11D794-8026

1 Fault Found:
01435 - Brake Pressure Sensor 1 (G201) 
            012 - Electrical Fault in Circuit

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: 8P0-820-043.lbl
   Part No SW: 8P0 820 043 AC    HW: 8P0 820 043 AC
   Component: KlimavollautomatH19 0360  
   Revision: 096389      Serial number: 8P0820043AC   
   Shop #: WSC 00000 000 00000
   VCID: 6DDA15DA7468C72742-8038

1 Fault Found:
00735 - Potentiometer in Positioning Motor for Air recirculation Flap (G143) 
            001 - Upper Limit Exceeded
             Freeze Frame:
                    Fault Status: 01100001
                    Fault Priority: 3
                    Fault Frequency: 1
                    Reset counter: 247
                    Mileage: 254670 km
                    Time Indication: 0
                    Date: 2019.07.01
                    Time: 15:21:18

             Freeze Frame:
                    Voltage: 12.50 V
                    (no units): 48.0
                    Temperature: 21.0°C


-------------------------------------------------------------------------------
Address 09: Cent. Elect.        Labels:. 8P0-907-279-23-H.lbl
   Part No SW: 8P0 907 279 F    HW: 8P0 907 279 F
   Component: Bordnetz-SG     H43 1201  
   Revision: 00H43000    Serial number: 00000006622653
   Coding: E4885F01B014100000160000160000000008FA175C0100
   Shop #: WSC 06435 000 08192
   VCID: 40849C6E137AFA4FD9-8014

   Subsystem 1 - Part No: 8P2 955 119 E  Labels: 1KX-955-119.CLB
   Component: Wischer AU350   H01 0130  
   Coding: 00062736
   Shop #: WSC 06435  

   Subsystem 2 - Part No: 4E0 910 557 A  Labels: 8K0-955-559.CLB
   Component: REGENLICHTSENSORH13 0090  
   Coding: 00150573
   Shop #: WSC 06435  

2 Faults Found:
01800 - Light Switch (E1) 
            008 - Implausible Signal - Intermittent
             Freeze Frame:
                    Fault Status: 00101000
                    Fault Priority: 3
                    Fault Frequency: 1
                    Reset counter: 246
                    Mileage: 254670 km
                    Time Indication: 0
                    Date: 2019.07.01
                    Time: 15:16:00

             Freeze Frame:
                        OFF
                    Voltage: 13.00 V
                        OFF
                        ON
                        OFF
                        OFF
                        OFF

02195 - Dimmer Switch Instrument Panel & Switch Lighting (E20) 
            009 - Open or Short to Ground - Intermittent
             Freeze Frame:
                    Fault Status: 00101001
                    Fault Priority: 5
                    Fault Frequency: 1
                    Reset counter: 246
                    Mileage: 254670 km
                    Time Indication: 0
                    Date: 2019.07.01
                    Time: 15:16:00

             Freeze Frame:
                        OFF
                    Voltage: 13.00 V
                        OFF
                        ON
                        OFF
                        OFF
                        OFF


-------------------------------------------------------------------------------
Address 15: Airbags        Labels: 8P0-959-655-94.lbl
   Part No SW: 8P0 959 655 C    HW: 8P0 959 655 C
   Component:    Airbag 9.41  H13 4260  
   Revision: 91H13426    Serial number: 003620G3MP90  
   Coding: 0071612
   Shop #: WSC 06314 000 00000
   VCID: 428096661D76E85FCF-8016

   Subsystem 1 - Serial number: 6332DRB4048248ABU

   Subsystem 2 - Serial number: 6342DRB4038E52B0R

   Subsystem 3 - Serial number: 63528RB4020AC448K

   Subsystem 4 - Serial number: 63628RB4020AC803G

   Subsystem 5 - Serial number: 63729RB4020B540DI

   Subsystem 6 - Serial number: 63829RB4020B545EP

3 Faults Found:
01578 - Airbag Deactivation Warning Lamp; Passenger Side (K145) 
            009 - Open or Short to Ground - MIL ON
             Freeze Frame:
                    Fault Status: 11101001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 207
                    Mileage: 254546 km
                    Time Indication: 0
                    Date: 2019.06.30
                    Time: 17:07:28

02756 - Redundant signal path of Airbag cut-off switch - front passenger side (E224) 
            010 - Open or Short to Plus - MIL ON
             Freeze Frame:
                    Fault Status: 11101010
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 255
                    Mileage: 254637 km
                    Time Indication: 0
                    Date: 2019.07.01
                    Time: 13:10:56

01228 - Airbag Cut-Off Switch for Passenger Side (E224) 
            010 - Open or Short to Plus - MIL ON
             Freeze Frame:
                    Fault Status: 11101010
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 255
                    Mileage: 254637 km
                    Time Indication: 0
                    Date: 2019.07.01
                    Time: 13:10:57


-------------------------------------------------------------------------------
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: 0000022
   Shop #: WSC 06314 000 00000
   VCID: 4182996A1870F347D6-8014

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments        Labels: 8P0-920-xxx-17-MY7.lbl
   Part No SW: 8P0 920 951 D    HW: 8P0 920 951 D
   Component: KOMBIINSTR. VDO H20 0570  
   Revision: D0H20004    Serial number: 1240G004005173
   Coding: 0004413
   Shop #: WSC 00011 888 96745
   VCID: 3668FAB641BE44FF73-8062

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: 33001071110A70
   Coding: 3D3F03C207002103
   Shop #: WSC 06314 000 00000
   VCID: 2F66CFD2BEE4753730-807A

1 Fault Found:
01304 - Radio 
            004 - No Signal/Communication
             Freeze Frame:
                    Fault Status: 01100100
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 203
                    Mileage: 254436 km
                    Time Indication: 0
                    Date: 2019.06.28
                    Time: 15:46:17


-------------------------------------------------------------------------------
Address 25: Immobilizer        Labels: 1K0-920-xxx-25.clb
   Part No SW: 8P0 920 951 D    HW: 8P0 920 951 D
   Component: KOMBIINSTR. VDO H20 0570  
   Revision: D0H20004    Serial number: AUX7Z0G0FNQ0JT
   Shop #: WSC 00000 000 00000
   VCID: 3668FAB641BE44FF73-8062

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver        Labels: 8P0-959-801-MIN2.lbl
   Part No: 8P0 959 801 H
   Component: Tuer-SG         020 0090  
   Coding: 0000760
   Shop #: WSC 06314 000 00000
   VCID: 40849C6E137AFA4FD9-8014

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist        Labels: 1Kx-909-144-G2V3.clb
   Part No: 1K2 909 144 L
   Component: EPS_ZFLS Kl.078 H07 1806  
   Shop #: WSC 06314 000 00000
   VCID: 356AFDBA5CB84FE77A-8060

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv.        Labels: 8P0-959-433.lbl
   Part No: 8P0 959 433 F
   Component:    KSG          H08 0070  
   Coding: 9980202002186D098505489FC637
   Shop #: WSC 06314 000 00000
   VCID: 3F869F926E8485B7A0-806A

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

   Subsystem 2 - Part No: 1K0 907 719 C
   Component: Neigungssensor  005 0003

   Subsystem 3 - Part No: 8P0 951 177 
   Component: Innenraumueberw.H04 0020

1 Fault Found:
00955 - Key 1 
            005 - No or Incorrect Basic Setting / Adaptation

-------------------------------------------------------------------------------
Address 47: Sound System        Labels: 8Px-035-382.lbl
   Part No SW: 8P4 035 382     HW: 8P4 035 382 
   Component: AB2 SUBWOOFERBOXH04 0180  
   Revision: 00003       Serial number: 30674697043728
   Shop #: WSC 00000 000 00000
   VCID: 71E209AA685023C766-8024

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass.        Labels: 8P0-959-802-MIN2.lbl
   Part No: 8P0 959 802 H
   Component: Tuer-SG         020 0090  
   Coding: 0000760
   Shop #: WSC 06314 000 00000
   VCID: 4182996A1870F347D6-8014

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio
Cannot be reached

-------------------------------------------------------------------------------
Address 62: Door, Rear Left        Labels: 8P4-959-801.lbl
   Part No: 8P4 959 801 D
   Component: Tuer-SG         020 0070  
   Coding: 0000216
   Shop #: WSC 06314 000 00000
   VCID: 40849C6E137AFA4FD9-8014

No fault code found.

-------------------------------------------------------------------------------
Address 72: Door, Rear Right        Labels: 8P4-959-802.lbl
   Part No: 8P4 959 802 D
   Component: Tuer-SG         020 0070  
   Coding: 0000216
   Shop #: WSC 06314 000 00000
   VCID: 4182996A1870F347D6-8014

No fault code found.

-------------------------------------------------------------------------------
Address 77: Telephone        Labels: 8P0-862-335.lbl
   Part No SW: 8P0 862 335 H    HW: 8P0 862 335 H
   Component: FSE_255x BT     H26 0290  
   Revision: 00000000    Serial number: 00000005077909
   Coding: 0000120
   Shop #: WSC 06314 000 00000
   VCID: 3B7EEB827A9C99978C-806E

1 Fault Found:
01304 - Radio 
            004 - No Signal/Communication
             Freeze Frame:
                    Fault Status: 01100100
                    Fault Priority: 5
                    Fault Frequency: 1
                    Reset counter: 203
                    Mileage: 254436 km
                    Time Indication: 0
                    Date: 2019.06.28
                    Time: 15:46:12


End-------------------------(Elapsed Time: 02:03)--------------------------

Please ignore most the fault codes its the 00735 code I need the help with, Thanks
 
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   #8  

Uwe

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Have a look at MVBs 001 and 002 in the HVAC module and tell us what you see there.

-Uwe-
 
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Jack@European_Parts

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Open RTFB and then WD and search G143, familiarize yourself with component location and how it is wired.

Use DVOM and resistance decade box to authenticate the tracks using VCDS by blocks being observed as Uwe aforementioned.

If needed replace the G143 or repair wiring/change controller as required.

In meantime you move vent door manually to achieve function during hot weather and or authenticate the mechanical's are not the issue too or by obstructions from FOD.
 
   #10  

judge360

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Have a look at MVBs 001 and 002 in the HVAC module and tell us what you see there.

-Uwe-

How do I do that? Im not that good with VCDS, I could do with going on a course to learn how to use it properly.
 
   #11  

judge360

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Open RTFB and then WD and search G143, familiarize yourself with component location and how it is wired.

Use DVOM and resistance decade box to authenticate the tracks using VCDS by blocks being observed as Uwe aforementioned.

If needed replace the G143 or repair wiring/change controller as required.

In meantime you move vent door manually to achieve function during hot weather and or authenticate the mechanical's are not the issue too or by obstructions from FOD.

I take it that's with Erwin? I will have to wait until Monday for that.
 
   #14  

Uwe

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How do I do that? Im not that good with VCDS, I could do with going on a course to learn how to use it properly.
[Select]
[08-HVAC]
[Measuring blocks]

That will take you to a screen that looks like this:

measblocks01.png


Put 001 in the Group box on the first line and click [Go!]

Put 002 in the Group box on the second line and click [Go!]

Do this with the car's engine running and the A/C calling for cold air.

-Uwe-
 
   #15  

judge360

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Thanks Uwe, I will get on this tomorrow. How do I upload that screen shot?
 
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Uwe

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Thanks Uwe, I will get on this tomorrow. How do I upload that screen shot?
We don't need a screen shot. When the data you want is being displayed, click the [Add to Log] and it will be saved to a plain text file. You can copy & past the contents here.

But if/when you're inclined to post pictures of any kind (including screen shots), have a look at: How to Post Pictures.

-Uwe-
 
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judge360

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Hi I have the data from the measuring blocks, here they are:-


Address 08: Auto HVAC (8P0 820 043 AC)

17:20:46 Group 001: General
0.700 A A/C Regulating Valve (N280)
66.5 % A/C Regulating Valve (N280)
19.5 % High Pressure Sensor (G65)
5.0 bar Refrigerant Pressure

17:20:46 Group 002: Compressor Shut-Off Conditions
0.0 Current Shut-Off Condition
0.0 Last Shut-Off Condition
0.0 Last but One Shut-Off Condition
0.0 Last but Two Shut-Off Condition

17:20:46 Group 008: Air Recirculation Flap Control Motor (V113) / Potentiometer (G143)
133.0 Feedback Value (Actual)
132.0 Feedback Value (Specified)
51.0 Minimum Position (Lower Stop/Closed)
130.0 Maximum Position (Upper Stop/Open)


Thanks.
 
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   #18  

Uwe

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OK, so it's not being requested to shut off the compressor, and you have some pressure. My guess: Bad compressor pulley. Pulley spinning, but compressor internals are not.

-Uwe-
 
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judge360

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OK, so it's not being requested to shut off the compressor, and you have some pressure. My guess: Bad compressor pulley. Pulley spinning, but compressor internals are not.

-Uwe-

Thank you very much Uwe, we have a compressor. So why does it throw up a fault for the potentiometer G143?
 
   #20  

Uwe

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Thank you very much Uwe, we have a compressor. So why does it throw up a fault for the potentiometer G143?
I don't think the two are related. A malfunction in the recirc flap shouldn't cause a complete lack of cold air in any case.

-Uwe-
 
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