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Audi a8l 3.0tdi j17 location

Jpderv Jun 23, 2018

  1. Jpderv

    Jpderv New Member

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    Hi folks looking some help few weeks ago my a8 stopped and would not start checked pipes going into the high pressure pump and there was no fuel in them so suspected in tank pumps.

    If I supply power to the 2 pumps in the tank the car will run and drive about happily.

    After some digging about on the internet I found out that it's a j17 relay that supplies the pumps with power I tried looking everywhere and for the life of me I cannot find this relay.

    Does anyone know where it's located because I checked under the ECU kick panel on drivers side RHD checked in the boot can't find it anywhere.

    Interestingly when scanned with vcds there was only a few glow plug faults that's it really.

    I'm puzzled it's such a nice car to drive I know all I would have to do is run a switched positive to the pumps and it would run but I'd quite like to get it figured out.

    Thanks in advance.
     
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  3. Stokka

    Stokka Member

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  4. Jpderv

    Jpderv New Member

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  5. Stokka

    Stokka Member

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    It's worth a look mate, I imagine all the fuse and relay positions to be more or less the same
     
  6. Jpderv

    Jpderv New Member

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    I fell a bit silly now I was expecting to see J17 written on the relay but there just numbers I have found that on some a8s it's a 208 relay and on others it's 372 relay so with that information I should have a better chance of finding it now.

    Thanks for the info buddy
     
  7. desertstorm

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

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    What year is the car ?, apart from the relay it will be fused and there are probably several fuse boxes spread around the car.
     
  8. Jpderv

    Jpderv New Member

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    It's 2006 Audi A8 3.0 TDI I have checked 3 fuse box locations but so far none of them appear to have anything related to the fuel punp having said that if my fuse finding is anything like my relay finding I may have to give it a once over again lol.
     
  9. desertstorm

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

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    Looking at the wiring diagram there is a 20A fuse located in right rear boot area.

    upload_2018-6-27_16-51-27.png

    The relay is also located in the boot area if your engine is an ASB or BVJ it's the relay marked 3 .

    upload_2018-6-27_16-54-37.png


    Fuse box located in area marked 7/8/9
    upload_2018-6-27_16-55-57.png
     
  10. Jpderv

    Jpderv New Member

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    Pretty clear instructions there thanks buddy I'm bound to get to the bottom of the problem now will be sure to keep you guys updated.
     
  11. Jpderv

    Jpderv New Member

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    Bit of a depressing update sweated my nutts off in 35c temperatures and still can't find the relay removed glove compartment nothing in there removed panel underneath steering wheel unrelated relays in there pic included also checked in the boot I did find a 40a fuse but that was fine also in related relays I'm at a lose
     
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  13. Jpderv

    Jpderv New Member

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    This is the RHS below steering wheel
     

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  14. Jpderv

    Jpderv New Member

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    This is the trunk below the glove compartment
     

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  15. desertstorm

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

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  16. Jpderv

    Jpderv New Member

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    Nope I already checked in this locations and the relay I am looking for isn't there the problem is everyone keeps giving me information for 4.2 gas a8 mine is diesel 3.0
     
  17. desertstorm

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

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    The information I got from Elsawin is for an ASB or BVJ which are the 3.0 TDI and 4.2 TDI models. Yours should be an ASB. There isn't going to be any great difference in the fuel systems for a 3.0 TDI and 4.2 TDI engine.
     

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