OEM MK4 management wiring => Mk1/2/3 harness install FAQ (Now with added dieselness!)

Discussion in 'Engines' started by rubjonny, Nov 8, 2013.

Page 4 of 46
  1. SLIMWADEY

    slimwadey Paid Member Paid Member

    Joined:
    Mar 4, 2012
    Likes Received:
    91
    Location:
    Thatcham Berkshire.
    Ps
    Will I need to install the brake or clutch switch?
    And I seem to have a sensor on the old intercooler, is this still used and if so do I tap it into my new intercooler somehow?
     
    slimwadey, Apr 23, 2014
    #61
  2. rubjonny

    rubjonny Administrator Staff Member Admin

    Joined:
    Oct 31, 2003
    Likes Received:
    3,318
    Location:
    Bracknell
    I always run the wires behind the fusebox in case, differing opinions on if you should keep them or not. launch control iirc needs them?

    for the intercooler i didnt think there was a sensor on them, is it a VAG unit or off another car?
     
    rubjonny, Apr 23, 2014
    #62
  3. SLIMWADEY

    slimwadey Paid Member Paid Member

    Joined:
    Mar 4, 2012
    Likes Received:
    91
    Location:
    Thatcham Berkshire.
    It's a valeo intercooler
    DSC_0033_zpsscwqlbcy.jpg DSC_0034_zpsltlifc98.jpg
     
    slimwadey, Apr 23, 2014
    #63
  4. rubjonny

    rubjonny Administrator Staff Member Admin

    Joined:
    Oct 31, 2003
    Likes Received:
    3,318
    Location:
    Bracknell
    thats the MAP sensor I believe, if there is nowhere in your intercooler or pipework for it then you'll need to mount it some other way

    the multi pin plug there is for the accelerator pedal the blue plug that goes to the ecu loom has been chopped off. so you'll either need to replace it, splice the plug back on, or just extend the blue plug wires and splice this end on it direct. no reason to have the blue plugs on there other than for convenience sake :)
     
    rubjonny, Apr 23, 2014
    #64
  5. SLIMWADEY

    slimwadey Paid Member Paid Member

    Joined:
    Mar 4, 2012
    Likes Received:
    91
    Location:
    Thatcham Berkshire.
    Right just before it chucked it down with rain i went and attempted to 'do a bit'

    Here is what's going on now

    The wires that will be eventually going towards the fusebox , these include the relay that needs extending with a black/purple that plug into the engine loom
    DSC_0042_zps4vlmlbnf.jpg

    ECU plugs , one through the hole and one not yet
    DSC_0043_zpsxnln3hf8.jpg

    What the chuff is this for ?
    DSC_0044_zpsnlz3cosj.jpg

    This i believe to be the power steering sensor wire ( to be binned)
    DSC_0041_zpszpnkmbio.jpg

    Any idea what this plug goes to ? i cant find anywhere on the engine, but some stuff has been removed so it may fit to that ?
    DSC_0046_zpsz2cz1fam.jpg

    Some stuff i removed today
    DSC_0048_zpsfuf1oyyj.jpg

    And a 14pin plug (now removed from my old mk4 non turbo loom )
    DSC_0049_zps0jgwkp2o.jpg

    Any feedback ?
    i have a feeling i'm not still getting it right somehow...........[:s]
     
    slimwadey, Apr 23, 2014
    #65
    erreesse likes this.
  6. rubjonny

    rubjonny Administrator Staff Member Admin

    Joined:
    Oct 31, 2003
    Likes Received:
    3,318
    Location:
    Bracknell
    the small ecu plug put it thru the hole on the passenger side of the scuttle, where your wiper loom used to go. that way this whole loom run can be kept separate from the main run as the large ecu plug and wiper plug will have the middle scuttle hole all to themselves :)

    2 pin and 1 pin plugs on your wing are reverse switch and starter motor, you may want to keep the ends and splice to your loom. loooong 2 pin is pas switch, bin

    3 pin may be cam position sensor? though doesnt look long enough... what are the wire colours?

    top tip for the ecu plugs thru the holes, if they're a bit tight you can pull them apart. pop the plastic cover off the abck then slide out the purple locking tab on the side, the 2 main wire blocks then pop out the back. they are keyed so will only go back in the right hole ;)

    makes it much easier to ID the pin numbers as well as the pin blocks have them stamped on the sides
     
    Last edited: Apr 24, 2014
    rubjonny, Apr 24, 2014
    #66
    erreesse likes this.
  7. SLIMWADEY

    slimwadey Paid Member Paid Member

    Joined:
    Mar 4, 2012
    Likes Received:
    91
    Location:
    Thatcham Berkshire.
    Can't remember actual colours now I'm at work, but I took this pic last night
    DSC_0047_zpsvs5ajurq.jpg
     
    Last edited by a moderator: Sep 11, 2019
    slimwadey, Apr 24, 2014
    #67
  8. rubjonny

    rubjonny Administrator Staff Member Admin

    Joined:
    Oct 31, 2003
    Likes Received:
    3,318
    Location:
    Bracknell
    colours do match up to cam sensor in my diagram, is it anywhere near the plug?
     
    rubjonny, Apr 24, 2014
    #68
  9. SLIMWADEY

    slimwadey Paid Member Paid Member

    Joined:
    Mar 4, 2012
    Likes Received:
    91
    Location:
    Thatcham Berkshire.
    I couldn't see it last night, I'll check later after work
     
    slimwadey, Apr 24, 2014
    #69
  10. RBAX

    rbax New Member

    Joined:
    Apr 13, 2014
    Likes Received:
    0
    Hi folks, apologises if this is not the right place to put this

    Just wondering if anyone can help me, I've put a 1.8t agu into a 90spec mk2 wired up using rubjonny's thread here and It starts then cuts out. I've had the ecu de-immobilised from a guy off ebay just wondering if there's any common mistakes people make things to check etc. The fuel pump's priming with ignition on and it starts straight away. I dont have any intercooler pipes on yet but it should still run shouldn't it? I'm going to have to wire up a diagnostic port and check on vag.com me thinks
     
    rbax, May 11, 2014
    #70
  11. rubjonny

    rubjonny Administrator Staff Member Admin

    Joined:
    Oct 31, 2003
    Likes Received:
    3,318
    Location:
    Bracknell
    yeah start with vagcom, if it wont run even if you hold the revs this suggests immobiliser still kicking in or maybe a faulty crank sensor
     
    rubjonny, May 12, 2014
    #71
  12. 94420VTURBO

    94420vturbo New Member

    Joined:
    May 12, 2014
    Likes Received:
    0
    Hi rubjonny do you have a number I could contact you on to discuss a few queries I have on my agu loom cheers.
     
    94420vturbo, May 12, 2014
    #72
  13. DEZBO

    Dezbo New Member

    Joined:
    Dec 18, 2013
    Likes Received:
    2
    Location:
    St.Ives, Cambs
    Hi

    As i won't be fitting the rev counter converter to begin with, is it ok to leave the 2 wires that went to the coil disconnected or do they need connecting elsewhere?
     
    Dezbo, May 26, 2014
    #73
  14. rubjonny

    rubjonny Administrator Staff Member Admin

    Joined:
    Oct 31, 2003
    Likes Received:
    3,318
    Location:
    Bracknell
    the black wire to the coil will either be unused if you use an ecu relay, or you may want to re-use it for coil/ecu power its up to you. the red/black to the coil -ve you can leave it hanging behind the fusebox ready for when the converter is fitted, just extend the mk4 ecu signal wire back there as well and keep them together for easy access later :)
     
    rubjonny, May 27, 2014
    #74
  15. MISAKI

    misaki New Member

    Joined:
    May 27, 2014
    Likes Received:
    0
    Hello, may somebody draw a block diagram how to connect the CE2 and 1.8t bam wiring. I will be very grateful.
     
    misaki, May 27, 2014
    #75
  16. DEZBO

    Dezbo New Member

    Joined:
    Dec 18, 2013
    Likes Received:
    2
    Location:
    St.Ives, Cambs
    Nice one. Thanks.
     
    Dezbo, May 27, 2014
    #76
  17. TIM10_10

    tim10_10 New Member

    Joined:
    Oct 7, 2007
    Likes Received:
    0
    Hi just been reading through this thread and has been a great help. I was just wondering if anyone has had a problem with no spark at the coils? I have put this in to my mk2 16v gti ce1 type using the guide above but have no spark. The only differences I am showing is the main power for ecu wire on mine is red/purple not green. I have wired a separate relay as per instructions and the fuel pump primes and you can hear throttle body making noise. But the car wont start and has no spark at coils. There is an earth present and a ignition live either side of this at the coil. Only fault codes are a can bus fault and p1861 control module programming not finished. I have had the mobilizer defeated by r-tech. I dont have a crank sensor signal in live data but am about to scope it to check. It does have a 5v signal to it tho. Any help would be appreciated.
     
    tim10_10, Jun 2, 2014
    #77
  18. TIM10_10

    tim10_10 New Member

    Joined:
    Oct 7, 2007
    Likes Received:
    0
    Managed to sort this if anyone has the same problem. Sent ecu back to r tech who reflashed a standard map on to it and this cured it. The same fault code is still present but runs spot on now
     
    tim10_10, Jun 6, 2014
    #78
  19. DANMAGUIRE

    danmaguire New Member

    Joined:
    Jul 3, 2014
    Likes Received:
    0
    I'm just on doing a agu conversion into my 1991 Caddy. I have the engine in place and I'm about to start the wiring. I'm a bit confused what is meant by E/14 (via male spade). Iv checked on the back of my fuse box and plug 'E' pin 14 is empty. Also the connection is a pin rather than a spade type???
     
    danmaguire, Jul 15, 2014
    #79
  20. rubjonny

    rubjonny Administrator Staff Member Admin

    Joined:
    Oct 31, 2003
    Likes Received:
    3,318
    Location:
    Bracknell
    On a factory CE1 GTI pin E/14 powers both the fuel pump, and some engine electrics (WUR and AAV). The way they do this is with 2 wires into E/14, one goes off to the fuel pump and the other to a male spade. then the engine electrics plug into this male spade :)

    You could also use the large spade N for one or both of the above, just be aware it is not fused so you'll need to add an inline fuse for safety. That being said on the CE2 fusebox Z/1 is used for the fuel injectors on most EFI engines and this is not fused either!
     
    rubjonny, Jul 16, 2014
    #80
    erreesse likes this.
Page 4 of 46

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Accept Learn More...
    Dismiss Notice