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  1. 11-15-2008 12:13 PM #1
    O2VW1.8T
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    ECM Power Relay Load Circuit: (J271)

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    Where is this located on my 04 audi A4 1.8T. Freakin coilpack blew up, caught on fire a little. Replaced the coilpacks but dont know where this relay is located can anyone help me out. thanks
    MK4 GTi 1.8T converted to AWD
    New 1/8th mile 7.36@102mph-27psi 93 octane, no meth
    New build times 23psi pump 11.9@126mph-96mph in the 1/8th
    04' A4 1.8t frontrak converted to quattro, was RWD for a lil now its quattro finally
    2011 JSW Tdi 6speed manual
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  2. 11-15-2008 12:54 PM #2
    old guy
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    Re: ECM Power Relay Load Circuit: (J271)

    It is located in the ECU box. Clicky click (Be sure to scroll down)

    Cheers!
    '03 A4 5-MT Motoza tuned Frankenturbo F21L With full supporting mods. Sold (and missed dearly).
    '13 A5 6-MT Needs more Fun Stuff: Neuspeed PM / 3.0 TDI Intercooler / H&R OE Sport Springs / Bilstein B8 Shocks / TyrolSport Brake Stiffeners / ECS Short Shifter / S5 Side Skirts / RS Grille
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  3. 11-15-2008 01:57 PM #3
    O2VW1.8T
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    Re: ECM Power Relay Load Circuit: (J271)

    found it, Dont know how i missed the 30 amp fuse on the side of the dash.
    MK4 GTi 1.8T converted to AWD
    New 1/8th mile 7.36@102mph-27psi 93 octane, no meth
    New build times 23psi pump 11.9@126mph-96mph in the 1/8th
    04' A4 1.8t frontrak converted to quattro, was RWD for a lil now its quattro finally
    2011 JSW Tdi 6speed manual
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  4. 11-15-2008 03:28 PM #4
    Don Supreme
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    A4 2.0T
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    MD

    Re: ECM Power Relay Load Circuit: (J271)

    How much did the replacement cost?
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  5. 12-19-2008 04:15 AM #5
    O2VW1.8T
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    Re: ECM Power Relay Load Circuit: (J271)

    Quote Originally Posted by Don Supreme View Post
    How much did the replacement cost?
    It was just a fuse
    MK4 GTi 1.8T converted to AWD
    New 1/8th mile 7.36@102mph-27psi 93 octane, no meth
    New build times 23psi pump 11.9@126mph-96mph in the 1/8th
    04' A4 1.8t frontrak converted to quattro, was RWD for a lil now its quattro finally
    2011 JSW Tdi 6speed manual
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  6. 07-23-2011 01:35 PM #6
    Jon1231
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    The info you posted for the other guy was helpful... leading me to my problem... which is: Performed all tests till I got to "test box" in reference to pin 23 because I read other than system voltage between 4 and 6 to check for relay activation. Would love to know where to obtain book that you got the info from or any info at all would be greatly appreciated. Original OBD 2 code was P0688 and after messing with it, can now only get a P0600. Thanks.
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  7. 09-01-2014 01:46 AM #7
    tchuck
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    '04 A4 1.8T Avant tip
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    Portland, OR

    Quote Originally Posted by old guy View Post
    It is located in the ECU box. Clicky click (Be sure to scroll down)

    Cheers!
    I just wanted to raise this thread from the dead to thank old guy for being such a badass in general, and also for this link. My B6 died randomly in my driveway today and after pulling no less than a bajillion fault codes and following the procedures outlined in this link I was able to diagnose a faulty J271 ECM voltaqe supply relay.

    EDIT: It wasn't the relay. I replaced it and the issue persists. Upon further investigation I found my coil plug harness is shorting. Repair in progress.
    Last edited by tchuck; 09-05-2014 at 01:24 AM.
    ŠTimtronic
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  8. 12-02-2014 10:24 AM #8
    sepanskB6
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    Quote Originally Posted by tchuck View Post
    I just wanted to raise this thread from the dead to thank old guy for being such a badass in general, and also for this link. My B6 died randomly in my driveway today and after pulling no less than a bajillion fault codes and following the procedures outlined in this link I was able to diagnose a faulty J271 ECM voltaqe supply relay.

    EDIT: It wasn't the relay. I replaced it and the issue persists. Upon further investigation I found my coil plug harness is shorting. Repair in progress.
    Just curious what was the part number for the relay and harness and costs for both? I am in the same mess you are in right now.
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  9. 12-02-2014 10:42 AM #9
    AudiA4_20T
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    http://store.034motorsport.com/harne...wire-coil.html
    - Clint

    Current : 2013 Q5 3.0T Prestige S-Line - 11.6@117 - 034 Stage2+ FBO
    Gone : One of the first ever 2.7T Swaps - White '04 S4 2.7T - Stage 2+
    Gone : Fastest B6 A4 ever - 464awhp/12.1@116
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  10. 12-02-2014 11:35 AM #10
    tchuck
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    '04 A4 1.8T Avant tip
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    Quote Originally Posted by sepanskB6 View Post
    Just curious what was the part number for the relay and harness and costs for both? I am in the same mess you are in right now.
    My problem was the coil harness, and I rebuilt it with new Oem connectors. They are $15 each from le dealer, but you can find them cheaper.
    .

    .

    .

    .

    .


    Currently it's wrapped up in the thick Oem heat shielding and looks just like it did before.
    ŠTimtronic
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