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Thread: comunication with EIZ and GM module problem..

  1. #1
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    comunication with EIZ and GM module problem..

    Hi guys going through the car. Put my star scanner on and all works except can’t get comunication with ezl amd says GM not present
    car runs perfect.

    thanks
    Erick Marciano
    ps: will do a formal intro once the weather gets nice for pictures
    Attached Images Attached Images

  2. #2
    .036 Hoonigan™
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    Re: comunication with EIZ and GM module problem..

    Either the 38-pin socket is dirty/corroded/damaged, or the multiplexer could have issues (check that all pins are present).

    Eyeball the 38-pin socket, it should look like the photo below (also see thread here).

    Attachment 53260


  3. #3
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    Re: comunication with EIZ and GM module problem..

    Thanks will try to clean tomorow
    does any of upu have a full pinout to know the pin responsible for the EZL AND GM?

  4. #4
    .036 Hoonigan™
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    Re: comunication with EIZ and GM module problem..

    Everything you need is in the attached photos and PDF files in post #1 here:

    https://www.500eboard.com/forums/showthread.php?t=2996


  5. #5
    E500E Guru nocfn's Avatar
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    Re: comunication with EIZ and GM module problem..

    Quote Originally Posted by Ertech View Post
    Thanks will try to clean tomorow
    does any of upu have a full pinout to know the pin responsible for the EZL AND GM?
    Just a reminder,the manual diagrams show the pins and numbers at the top of the diagram but in practice, they start at the bottom of the plug.
    1994 E500
    249/275 - 8F19 or 8F32 or 8320

    1991 560 SEC
    199/268
    2014 E350 Cab 799/264

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    .036 Hoonigan™
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    Re: comunication with EIZ and GM module problem..

    Quote Originally Posted by nocfn View Post
    Just a reminder,the manual diagrams show the pins and numbers at the top of the diagram but in practice, they start at the bottom of the plug.
    Correct - look closely at the black plastic connector, and you can see which holes have metal sockets, and which are empty. Match the pattern up to the diagram.


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    Re: comunication with EIZ and GM module problem..

    Ok guys this is what I did so far
    one of the pins going to EZL was dirty( number 17 )
    I now get vomunication with EZL
    still don’t get comunication with BAS module
    cleaned pin 8 , removed BAS module checked continuity betwwen pin 8 from socket and 33 from BAS module socket
    and I get continuity . I can be the BAS module or the scanner
    what should I do next?
    thanks

  8. #8
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    Re: comunication with EIZ and GM module problem..

    All good was a scanner problem
    thanks all

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