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my key wont start car with OBDII ecu

Discussion in 'HYBRID -> EG-EK / DC' started by awais_uk, May 20, 2007.

  1. awais_uk

    awais_uk New Member

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    Hi, i've changed everything needed to swap my D16y8 with a B16a2 including the ecu and full wiring harness.

    However my car wont start when the obdII ecu is plugged in, could this be because of the transponder key?

    Any help really appreciated, thanks.
     
  2. formby

    formby learning in progress

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    what year is the car & the engine?
     
  3. awais_uk

    awais_uk New Member

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    car is a 97 civic coupe with a d16y8 engine and a P2P OBDI ecu

    and donor car is a 99 civic 4dr with a b16a2 and a P2T OBDII ecu
     
  4. formby

    formby learning in progress

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  5. awais_uk

    awais_uk New Member

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    But i've transfered the complete original harness which went with the OBDII ecu over along with the actual ecu itself, would i still need it?
     
  6. formby

    formby learning in progress

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    you got me there...

    seems like it could be the ignition [switch] or something electrical


    did you go over your ground points?
     
  7. awais_uk

    awais_uk New Member

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    i've found the source of the problem i think, its because the key is coded with the OBDI ecu and not the OBDII ecu,

    means im gonna have to get a new key made which has the cut of the origonal key but the code to match the new ecu...

    costs £40 BUMMER!

    Thanks loads for ur input tho.
     
  8. formby

    formby learning in progress

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  9. custompainter

    custompainter drive it like U stole it

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    your key shouldn't make a difference does the car even turn over i'm mean what does it do when you turn the key
    is the CEL on ? if so whats the code
     
    Last edited: May 21, 2007
  10. awais_uk

    awais_uk New Member

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    i get absoloutley nothing, engine wont even turn over, the ecu lights and ignitions lights are up but other than that nothing.

    The car has a cat 1 alarm and immobiliser, and the key itself has a chip imbedded into it which sends out a signal to the ecu when the car is staring

    but as i've replaced the ecu the codes are no longer the same,

    which means i have to get a new key made with the code of the new ecu.

    I think???:confused:
     
  11. custompainter

    custompainter drive it like U stole it

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    well i've never heard of a key with a chip sorry but you really need to check into that
    but the first thing i would check is to see if the starter is plugged in there is a wire that clips on to the starter and if it's not clipped on good your car wont turn over
    [​IMG]
    if you cant get it going after that then i would check the ignition and see if there are any wires spliced in if there are take them out and reconnect the wires with out the spliced sh-t
     
  12. awais_uk

    awais_uk New Member

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    All the starters and wires are fine, i know this because the car will start when the original ECU is plugged in, just wont start when the OBDII ecu isplugged in.
     
  13. custompainter

    custompainter drive it like U stole it

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    you got a bad ecu kid get a new one !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
     
  14. awais_uk

    awais_uk New Member

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    ECU's is fine, i've told the problem is that the transponder uni on the driver side footwell is linked to the ECU, however because i've changed the ECU i also need the transponder unit to go with it, without it i cant get passed the immobiliser unit which is why car wont start, so im gonna need the transponder unit from the donor car which i can tape the donor key to, or i can replace the lock set.

    is it the only way :( ?
     
  15. vtecsir1

    vtecsir1 Senior Member

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    im not aware of a civic si ecu needing a transponder key, the type r i know does use that type of key and wont start without it.
     
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