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calling aircon experts if possible

simonrad Mar 12, 2020

  1. simonrad

    simonrad New Member

    17
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    problem is as follows

    Audi A3 1.9tdi 2009, climate control, warm air on all settings down to 16 degrees, when 'LO' selected fan speeds up and temperature does drop a bit but possibly as outside air is drawn in?

    Went for a regas, told that 545g removed from system and 525g put in so seems to be holding onto the gas/ no leaks.

    No change to engine note/ rpm when AC switched on but larger silver pipe definatly chills down, thinner silver pipe still warm

    Tried to connect with VCDS but no information showing/ no communication?, (tried on another VAG car and lots of readings)

    Flaps reset

    I was told that even though the compressor is cooling the gas, the solenoid valve inside the pump could be faulty.

    Looking for ideas on how to proceed, what to check next, how to get VCDS readings etc

    thanks in advance for any input
     
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  3. vag-tech

    vag-tech Site Sponsor Site Sponsor Team Ibis VCDS Map User Audi A3

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    So if you got no comms with hvac module that’ll need looking into. Check power/ground to module first.
     
  4. simonrad

    simonrad New Member

    17
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    So I would need to check connections?, I can see a plug into the compressor, I read about fuses so I will see where they are located, any other areas to check connections/ wiring? Thanks

    Sent from my ONEPLUS A6003 using Tapatalk
     
  5. vag-tech

    vag-tech Site Sponsor Site Sponsor Team Ibis VCDS Map User Audi A3

    336
    125
    43
    Check fuse first. Then power/grounds at module.
    When you attempt to access with vcds, can you access the module at all? Can you post a full scan?
     
  6. simonrad

    simonrad New Member

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    Will start to investigate at the first opportunity, will try to find a fuse diagram for my car, when you refer to the HVAC module, is this the control unit below the radio or another unit? hopefully will be able to post a scan soon

    Sent from my ONEPLUS A6003 using Tapatalk
     
  7. simonrad

    simonrad New Member

    17
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    OK so I have run some tests and checks,


    a full scan with VCDS shows a fault with a glowplug which I was aware of but nothing on the HVAC system.

    I then ran some output tests and Measuring blocks and there seems to be a fault with the G65 pressure sensor

    The 3 pin plug to the condenser measures 12v with ignition on and 14v with the engine running

    If this plug is disconnected, AC can't be activated

    The2 pin plug to the compressor measures 0.81v with ignition or engine on and 9.63v with AC selected and engine on

    Any feedback is welcome, I'm presuming the results point to the G65 sensor although I read some owners have replaced this and that wasn't the problem.

    If I need to do any other checks etc please let me know,


    ----------------------------------------------------------------------------------
    VCDS Scan
    Saturday,14,March,2020,16:21:19:35001
    VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
    VCDS Version: 19.6.2.0 (x64)
    Data version: 20190930 DS308.0
    www.Ross-Tech.com


    VIN: WAUZZZ8P2AA044769 License Plate:


    Chassis Type: 8P-AU35 (1K0)
    Scan: 01 03 08 09 15 16 17 19 25 42 44 46 52 56

    VIN: WAUZZZ8P2AA044769 Mileage: 154640km-96088miles

    01-Engine -- Status: Malfunction 0010
    03-ABS Brakes -- Status: OK 0000
    04-Steering Angle -- Status: OK 0000
    08-Auto HVAC -- Status: OK 0000
    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
    -------------------------------------------------------------------------------
    Address 01: Engine Labels: 03G-906-021-BLS.clb
    Part No SW: 03G 906 056 S HW: 03G 906 021 AB
    Component: R4 1,9L EDC G000SG 2917
    Revision: --H11--- Serial number: AUX7Z0I7FNK02F
    Coding: 0000071
    Shop #: WSC 06314 000 00000
    VCID: 377D488446C53DF756-8062

    1 Fault Found:
    005659 - Glowplug for Cylinder 2 (Q11)
    P161B - 000 - Open Circuit
    Freeze Frame:
    Fault Status: 01110000
    Fault Priority: 3
    Fault Frequency: 1
    Reset counter: 255
    Mileage: 149985 km
    Time Indication: 0
    Date: 2019.11.10
    Time: 11:43:42

    Freeze Frame:
    RPM: 1050 /min
    Speed: 1.0 km/h
    Load: 4.7 %
    Voltage: 14.44 V
    Bin. Bits: 00101100
    Temperature: 1.8°C
    Bin. Bits: 10110000

    Readiness: 0 0 0 0 0

    -------------------------------------------------------------------------------
    Address 03: ABS Brakes (-----) Labels:. 1K0-907-379-60EC1F.clb
    Part No SW: 1K0 907 379 AN HW: 1K0 907 379 AN
    Component: ESP MK60EC1 H45 0107
    Revision: 00H45001
    Coding: 13422012092600FEC81204EA902200813800
    Shop #: WSC 06314 000 00000
    VCID: 7EF39DA0E97FCCBFD5-802A

    No fault code found.

    -------------------------------------------------------------------------------
    Address 08: Auto HVAC Labels: 8P0-820-043.lbl
    Part No SW: 8P0 820 043 BK HW: 8P0 820 043 BK
    Component: KlimavollautomatH09 0140
    Revision: 000443 Serial number: 8P0820043BK
    Shop #: WSC 00000 000 00000
    VCID: 76E38580014F84FF8D-8022

    No fault code found.

    -------------------------------------------------------------------------------
    Address 09: Cent. Elect. (J519) Labels:. 8P0-907-063.clb
    Part No SW: 8P0 907 063 A HW: 8P0 907 063 A
    Component: BCM PQ35 M 104 0575
    Revision: 00104 AH
    Coding: 0E000A2FB005F000207041E00100814C437A23AA117DC129E40008800040
    Shop #: WSC 00658 210 91781
    VCID: 326B79906DA7D8DF61-8066

    Subsystem 1 - Part No SW: 8P2 955 119 F HW: 8P2 955 119 F Labels: 1KX-955-119.CLB
    Component: Wischer AU350 H10 0040
    Coding: 00DD13

    Subsystem 2 - Part No SW: 8K0 910 557 HW: 8K0 955 559 A Labels: 8K0-955-559.CLB
    Component: REGENLICHTSEN H04 0003
    Coding: 024C2D

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

    Subsystem 4 - Part No: 1K0 951 605 C
    Component: LIN BACKUP HO H03 1301

    Subsystem 5 - Part No: 1K0 907 719 C
    Component: Neigungssenso 005 0003

    No fault code found.

    -------------------------------------------------------------------------------
    Address 15: Airbags (J234) Labels:* 8P0-959-655-10.clb
    Part No SW: 8P0 959 655 P HW: 8P0 959 655 P
    Component: Airbag AU1042 H06 0140
    Revision: -------- Serial number: 003FB002KRSK
    Coding: 303142413039303030384A55305238503053
    Shop #: WSC 06314 000 00000
    ASAM Dataset: EV_Airba10AURB4 001001
    ROD: EV_Airba10AURB4.rod
    VCID: 4FAD1064165595376E-801A

    Crash sensor for side airbag: driver side:
    Serial number: 34928RB400004F29DEFB

    Crash sensor for side airbag: front passenger side:
    Serial number: 35028RB400004F3219AI

    Crash sensor for side airbag: rear: driver side:
    Serial number: 35128RB400004F28DE8$

    Crash sensor for side airbag: rear: passenger side:
    Serial number: 35228RB400004F321C4H

    Crash sensor for front airbag: driver side:
    Serial number: 35547RB400004EEB426Z

    Crash sensor for front airbag: front passenger side:
    Serial number: 35647RB400004EEB3FFE

    No fault code found.

    -------------------------------------------------------------------------------
    Address 16: Steering wheel Labels: 8P0-953-549.lbl
    Part No SW: 8P0 953 549 K HW: 8P0 953 549 K
    Component: J0527 H37 0070
    Coding: 0002042
    Shop #: WSC 06314 000 00000
    VCID: 46833540312F547FDD-8012

    Subsystem 1 - Part No: XXXXXXXXXXX
    Component: E0221 H02 0030

    No fault code found.

    -------------------------------------------------------------------------------
    Address 17: Instruments Labels: 8P0-920-xxx-17-MY8.clb
    Part No SW: 8P0 920 982 J HW: 8P0 920 982 J
    Component: KOMBIINSTR. VDO H02 0980
    Revision: D0H02002 Serial number: 2247I002006844
    Coding: 0004428
    Shop #: WSC 12345 123 12345
    VCID: 408F2358130B7A4FE7-8014

    No fault code found.

    -------------------------------------------------------------------------------
    Address 19: CAN Gateway Labels:. 1K0-907-530-V4.clb
    Part No SW: 1K0 907 530 AA HW: 1K0 907 951
    Component: J533 Gateway H16 5223
    Revision: H16 Serial number: 4120K097300093
    Coding: E9801F06000202000101
    Shop #: WSC 06314 000 00000
    VCID: 66C3D5C051EF747F3D-8032

    No fault code found.

    -------------------------------------------------------------------------------
    Address 25: Immobilizer Labels: 1K0-920-xxx-25.clb
    Part No SW: 8P0 920 982 J HW: 8P0 920 982 J
    Component: KOMBIINSTR. VDO H02 0980
    Revision: D0H02002 Serial number: AUX7Z0I7FNK02F
    Shop #: WSC 00000 000 00000
    VCID: 408F2358130B7A4FE7-8014

    No fault code found.

    -------------------------------------------------------------------------------
    Address 42: Door Elect, Driver Labels: 8P0-959-801-MAX3.lbl
    Part No SW: 8P0 959 801 M HW: 8P0 959 801 M
    Component: Tuer-SG H04 0100
    Coding: 0000636
    Shop #: WSC 06314 000 00000
    VCID: 4581324C0C295F67D4-8010

    No fault code found.

    -------------------------------------------------------------------------------
    Address 44: Steering Assist Labels: 1K0-909-14x-GEN3.clb
    Part No: 1K0 909 144 H
    Component: EPS_ZFLS Kl. 232 2901
    Revision: 00H17000
    Shop #: WSC 02069 000 90108
    VCID: 2F6D70E4BE95F5370E-807A

    No fault code found.

    -------------------------------------------------------------------------------
    Address 52: Door Elect, Pass. Labels:. 1K0-959-702-MAX3.clb
    Part No SW: 8P0 959 802 M HW: 8P0 959 802 M
    Component: Tuer-SG H04 0100
    Coding: 0000636
    Shop #: WSC 06314 000 00000
    VCID: 46833540312F547FDD-8012

    No fault code found.

    -------------------------------------------------------------------------------
    Address 56: Radio Labels: 8J0-035-1xx-56.clb
    Part No SW: 8P0 035 152 E HW: 8P0 035 152 E
    Component: R Chorus2+ H02 0280
    Revision: 00H02000 Serial number: AUZ1Z2I5220776
    Coding: 0200021
    Shop #: WSC 06314 000 00000
    VCID: 2D516AECB49987273C-8078

    No fault code found.

    End-------------------------(Elapsed Time: 01:43)--------------------------
    basic settings 002 eng on.JPG
     

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