1999 E36 328i Vert OBC CODE wiring - Page 2

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Thread: 1999 E36 328i Vert OBC CODE wiring

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    #11
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    It's a 94 so it's EWS 1 and therefore not seperate EWS module.
    So pin 15 on the black plug...I'm sure that's how I've wired it in but it's still not working. I'll double check though.
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    #12
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    OK.

    Pin 12 on the small black plug at the back of the ZKE is also black/green, and my dealer fit 3G Mk1 alarm is spliced into it. Can anyone tell me what this wire does? (pin 12, green/black)

    Thanks
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    #13
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    Looking at the wiring diagrams for 1994, i've got X1071 of the OBC (Pin 1 + 3) goes to the X10182 (Pin 15 + 16) which is on the ZKE IV, respectively.

    Also, of the X1071 (Pin 2) goes to the Alarm, ZKE IV, Radio Microswitch and Engine Hood Switch

    It ALSO says, for late production, X1071 Pin 1 goes to the X55 (Pin 7) which connects to the starter immobilization relay !

    I've gotta pop out now - I'll have a proper look when I get back and try and figure it out !
     
     

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    Sphinx (20-05-2011)

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    Dr of BMW gildersol's Avatar
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    Pin 12 I think comes from terminal 30h on the starter. It's the unloader function.
     
     

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    Sphinx (16-05-2011)

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    Right, I think i've got it, but someone is going to need to verify this...

    By the looks of it, the CODE function doesn't go through the ZKE on EWS I, it goes straight to the relay. The relay is watching different inputs to see whether it should allow the starter to work or not.

    By the looks of it, starts at Pin 1 on the white connector on the OBC, goes to Pin 7 on the X55 connector (which is a 9 pin, black connector, behind the glovebox, I believe - Which I gather is the Starter Immob' Relay.), then comes back out at Pin 3 of the X55.... Then feeds through to the X20 connector in the engine bay (The round connector next to the fusebox), then goes off to Pin 66 or 68 of the DME connector (I can't see if it's 66 or 68, it's not very clear).

    SO.... I think you need to tap into Pin 7 on the starter immob' relay.

    If thats not it, then I ain't got a scooby

    EDIT: And this appears to backup what i'm thinking:http://www.e38.org/EWS.pdf
     
     

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    Sphinx (16-05-2011)

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    #16
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    Thanks Chris but in all fairness you've just confused the sh!t out of me! lol
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    Find the starter immobilizer relay behind the glovebox, pull it out, find pin 7, then run a wire from pin 1 of the white plug on the OBC to pin 7 on the relay.

    If your car didn't have the 18-button OBC out of factory, then you won't already have a wire to pin 7, so you'll have to find an electrical connector to go into the connector block of the relay... Or, just find a way of attaching the wire to the relay somehow.

    I think that'll do it
     
     

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    Sphinx (19-05-2011)

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    #18
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    Bump to say, Chris, you're a star!
    Tried it how you suggested after looking at those docs and confirming parts on realOEM etc and the CODE function works exactly how it should
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    Ferret (19-05-2011)

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    Excellent stuff

    Just to confirm, if you have EWS I, and want the CODE function, then you need to tap into Pin 7 of the starter immobilization relay !
     
     

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    Sphinx (20-05-2011)

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    #20
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    Exactly, to confirm this some more incase anyone else is interested:

    My car is a 1994 325i and came with an 11 button OBC from the factory (with CC obviously). The CODE function (pin 1 of the while plug, gren/black wire) needs to go to pin 7 of the 'Starter Interlock Relay' which is underneath the drivers side kick panel trim clipped to the side of the black junction box. You'll need to add a terminal into the base that the relay plugs into as pin 7 was empty.
    The CODE function should work as follows:
    Turn the key to position 1 (not ignition) and press the 'code' button, enter your code using the number buttons and hit 'set/res'. The next time you turn the ignition on you'll need to enter the code and hit 'set/res' again. If you don't then the starter motor won't engage.
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