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G476 Short to Ground fault

Djwoody Dec 18, 2014

  1. Djwoody

    Djwoody Member

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    Hi.
    My Cruise Control has stopped working on my A4 B8 and I have a fault coming up in VCDS which is:
    03182 - Clutch Position Snesor (G476) Short to Ground.

    I have replaced the G476 sensor (which is intergrated into the Master Cylinder) and the fault is still there.

    Does anyone have any information on this?

    Thanks
    Chris




    Wednesday,17,December,2014,19:06:20:62129

    VCDS -- Windows Based VAG/VAS Emulator

    VCDS Version: 14.10.0.0

    Data version: 20141022





    VIN: License Plate: 2014-12-17-CHRIS







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

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





    Address 53: Parking Brake Labels: 8K0-907-801-V1.clb

    Control Module Part Number: 8K0 907 801 E HW: 8K0 907 801 E

    Component and/or Version: EPB Audi B8 H05 0060

    Software Coding:

    Work Shop Code: WSC 00000 000 00000

    VCID: 316C81DF68DBEBA9D05-8064

    1 Fault Found:



    03182 - Clutch Position Sensor (G476)

    007 - Short to Ground

    Freeze Frame:

    Fault Status: 01100111

    Fault Priority: 6

    Fault Frequency: 1

    Reset counter: 240

    Mileage: 143530 km

    Time Indication: 0

    Date: 2014.12.17

    Time: 19:03:22



    Freeze Frame:

    Voltage: 12.00 V

    Count: 52

    Speed: 0.0 km/h

    Hex Value: 0x0263

    Hex Value: 0x0001

    Hex Value: 0x1010
     
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  3. V2brett

    V2brett Member

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    Be interested to see a fix for this too mate as i have the same problem. Keep me posted on how you get on.
     
  4. Djwoody

    Djwoody Member

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    Have you replaced the master cylinder?
    I changed mine and I still have the error and not fixed yet :-(
     
  5. desertstorm

    desertstorm Moderator Staff Member Moderator VCDS Map User quattro Audi A4 Audi Avant Owner Group TDi

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    When you see a short to ground quite often the problem is a blown fuse or supply issue.
    Here is some info on what the switch does it's for the A5 but is relevant

    http://www.audi-portal.com/en/diagnostic/sensors.html?sensor=476&model=6

    click on these links when you goto the page linked above for info on the sensor.
    upload_2015-1-12_20-22-30.png
    Looking at the wiring diagram there appear to be 2 fused supplies going to the module

    upload_2015-1-12_20-24-19.png

    Appears to be fuse 2 on fuse carrier ST1 and ST2 in fuse holder C
    This is located at the end of the dash on the drivers side

    upload_2015-1-12_20-29-41.png

    Check fuse 2 in both ST1 and ST2 , shown as being a 5A fuse.

    Karl.
     
  6. V2brett

    V2brett Member

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    No not yet bud it was going to be my next port of call, just with me doing mostly short journeys i dont miss the cruise that much.
    Reading that youve changed yours and still have the fault has put me off doing it though, 1 for the expense and 2 for the chance it wont work now.

    Do you have any other ideas or things your thinking of trying?

    Funny thing is my car shows no other indication of this fault apart from the parkbrake not auto releasing which is liveable with, ie it starts ok everytime.
     
  7. V2brett

    V2brett Member

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    Thanks for the info desertstorm, i have checked both those fuses and they appeared to be ok. I will have a good read of that link though and see what i can find out.

    Cheers

    Brett
     
  8. desertstorm

    desertstorm Moderator Staff Member Moderator VCDS Map User quattro Audi A4 Audi Avant Owner Group TDi

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    There is a connection to the EPB module that you can see on the above circuit diagram J540 is the module that controls that.
     
    V2brett likes this.
  9. desertstorm

    desertstorm Moderator Staff Member Moderator VCDS Map User quattro Audi A4 Audi Avant Owner Group TDi

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    If the fuses are good I would use a multimeter and check that there is power on the 2 supplies feeding the switch, also check the fuses with a multimeter.

    Karl.
     
    V2brett likes this.
  10. V2brett

    V2brett Member

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    Hi guys, just to update this thread i now have my cruise control and auto handbrake release all sorted for £50. It was the park brake module that was at fault.
    Just want to say thanks to Karl for the wiring diagrams as i studied these and decided to take the plunge and bought a used H revision module off ebay. My old module is an E revision like yours dj woody.

    Dj woody if you are going to also try this on yours i can help with sourcing a module, i missed 1 on ebay last weekend but the guy only got back to me today saying it hasnt sold. I think £40 would get it delivered to you.

    Cheers for all the help guys.
     
  11. desertstorm

    desertstorm Moderator Staff Member Moderator VCDS Map User quattro Audi A4 Audi Avant Owner Group TDi

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    Glad it's sorted, and didn't cost too much.
    Karl.
     
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  13. dsw88

    dsw88 New Member VCDS Map User

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    Hi guys sorry to bump an old thread but i've currently got this problem on my A5 where the auto release wont work with no other warnings on the dash, anyone know where the EPB module is on the A5?
     
  14. vag-tech

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

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    Live data possible on relevant measuring blocks (driver buckle switch; clutch switch; driver occupancy; etc)?
     
  15. R0cket

    R0cket Active Member Team Aruba Blue TFSI Owners Group Team V6 VCDS Map User Team Phantom

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    I have an error similar but mines 14 defective. I’m guessing I’ll be replacing the sensor soon.

    first noticed the gear indicator was missing occasionally and then my hill hold assist said it was unavailable. Then the cruise control wouldn’t work at all and finally found out the handbrake needed manually pressing.
     

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