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Thread: ELM 327 and Citroen c4

  1. #1
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    ELM 327 and Citroen c4

    Hello. I have a problem. I have a elm 327, i connect it to my c4 from 2006 and the soft says cannot connect unknown protocol. Can somebody tell me what to do?
    Thank you!

  2. #2
    VENDOR - ScanTool Vitaliy's Avatar
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    Try STNTerm

    Quote Originally Posted by bizkit1 View Post
    Hello. I have a problem. I have a elm 327, i connect it to my c4 from 2006 and the soft says cannot connect unknown protocol. Can somebody tell me what to do?
    Thank you!
    Download STNTerm, then send the following commands:

    ATZ
    ATH1
    ATSP00
    0100
    011C

    Right click in the window, "save as" or "copy", and post here. Then, repeat with:

    ATZ
    ATH1
    ATSP3
    0100
    011C

    Best regards,

    Vitaliy
    OBDLink MX: world's smallest, fastest, most advanced OBD/Bluetooth adapter with SW and MS CAN support. Read the review to learn more.
    Need to look up a diagnostic trouble code? Try the most up-to-date, free DTCsearch.com!

    You cannot send me a private message using this forum. Use my email instead: vitaliy[@]scantool.net.

  3. #3
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    And what are those command for? What is the purpose of this program?

  4. #4
    VENDOR - ScanTool Vitaliy's Avatar
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    Quote Originally Posted by bizkit1 View Post
    And what are those command for? What is the purpose of this program?
    The program is a virus, its purpose is to steal your private information, post it to our servers in Somalia, and then set your PC on fire.

    I'm kidding. The software is a terminal that lets you talk directly to the ELM327 and your car. The first set of commands sets the protocol to "Automatic", the second set sets it to "ISO9141". Then we send two OBD requests, which ask the vehicle which PIDs are supported, and what OBD system it has.

    Vitaliy
    OBDLink MX: world's smallest, fastest, most advanced OBD/Bluetooth adapter with SW and MS CAN support. Read the review to learn more.
    Need to look up a diagnostic trouble code? Try the most up-to-date, free DTCsearch.com!

    You cannot send me a private message using this forum. Use my email instead: vitaliy[@]scantool.net.

  5. #5
    Constant Bitrate
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    Does the same commands work for FIAT Grand Punto with 1.3 MJD diesel engine?

    I get the same error as unknown protocol.

  6. #6
    Variable Bitrate
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    DigitalVampire, what's the model year and where (which country) do you live?

  7. #7
    VENDOR - ScanTool Vitaliy's Avatar
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    Quote Originally Posted by DigitalVampire View Post
    Does the same commands work for FIAT Grand Punto with 1.3 MJD diesel engine?

    I get the same error as unknown protocol.
    The same commands should work, but I doubt that your vehicle is EOBD compliant (unless it's MY2004+ car).

    See this page for a more in-depth explanation:

    How do I know whether my car is OBD-II compliant?


    Best regards,

    Vitaliy
    OBDLink MX: world's smallest, fastest, most advanced OBD/Bluetooth adapter with SW and MS CAN support. Read the review to learn more.
    Need to look up a diagnostic trouble code? Try the most up-to-date, free DTCsearch.com!

    You cannot send me a private message using this forum. Use my email instead: vitaliy[@]scantool.net.

  8. #8
    Newbie emersonvier's Avatar
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    I have the same probelm unknown protocol.
    I make this test

    ATZ
    ATZ


    ELM327 v1.3a

    >ATH1
    ATH1
    OK

    >ATSP00
    ATSP00
    OK

    >ATSP00
    ATSP00
    OK

    >0100
    0100
    SEARCHING...
    UNABLE TO CONNECT

    >011C
    011C
    SEARCHING...
    UNABLE TO CONNECT

    ATZ
    ATZ


    ELM327 v1.3a

    >ATH1
    ATH1
    OK

    >ATSP3
    ATSP3
    OK

    >0100
    0100
    BUS INIT: ...ERROR

    >011C
    011C
    BUS INIT: ...ERROR

    I use this device

    http://cgi.ebay.com/ebaymotors/AL-OB...=p4506.c0.m245

    I had FIAT IDEA ELX 1.4 2007 from BRAZIL.

    I try test with other software but not work too.

    Thx

    EMERSON VIER

  9. #9
    VENDOR - ScanTool Vitaliy's Avatar
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    I'm afraid that either your vehicles is not EOBD compliant, or the tool is defective.

    Can you look at your diagnostic connector, and tell us which pins are populated?

    Vitaliy
    OBDLink MX: world's smallest, fastest, most advanced OBD/Bluetooth adapter with SW and MS CAN support. Read the review to learn more.
    Need to look up a diagnostic trouble code? Try the most up-to-date, free DTCsearch.com!

    You cannot send me a private message using this forum. Use my email instead: vitaliy[@]scantool.net.

  10. #10
    Variable Bitrate
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    Brazil does not use OBD2 or EOBD. No rules there yet.

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