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Thread: Problem connecting OBDII scanner to 2004 European Ford Focus

  1. #1
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    Problem connecting OBDII scanner to 2004 European Ford Focus

    Got an ELM 327 scanner. Drivers installed okay and it's appearing as Comm 4. Tried using ScanTool and PCMScan but both say no response from the car. Checked the fuse for the connector and it looks fine.

    This is the one I bought:
    http://cgi.ebay.co.uk/ws/eBayISAPI.d...=STRK:MEWNX:IT

    Tried it with a Citroen C3 and it seems to connect fine.

    I have tried it with ScanMaster and here is a pic of what comes up in the log.


    Someone said to me when I plug in the interface initially the rx and tx leds on it should flash as it does an "OBD handshake"? It doesn't seem to do this, just the power led comes on, dimly lit when the usb end isn't plugged in.

    I was checking the fuses behind the glove box and they all seem fine. Could it be a loose connection else where as the dash has been opened before to install a phone kit?

    Any suggestions appreciated!

  2. #2
    VENDOR - ScanTool Vitaliy's Avatar
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    Boy, the theories people come up with! The flashing Tx/Rx lights is the ELM327 doing a "lamp test", it's not an "OBD handshake".

    However, they are probably correct in thinking that the device is not receiving power (either that, or it is defective). If you have a voltmeter, measure the voltage between pins 5 & 16 of the diagnostic connector, it should be roughly equal to the battery voltage. This picture shows how the DLC pins are arranged, there are two rows and you count from left to right:



    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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    Hi Vitaliy,

    Thanks for the help. Got 14.5 volts across those pins on the car with the engine running. Tried it with my girlfriends 2004 Ford Fiesta and it connected fine. Tried with my friends 2002 Ford Focus and......nothing!

  4. #4
    VENDOR - ScanTool Vitaliy's Avatar
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    Quote Originally Posted by ush1 View Post
    Hi Vitaliy,

    Thanks for the help. Got 14.5 volts across those pins on the car with the engine running. Tried it with my girlfriends 2004 Ford Fiesta and it connected fine. Tried with my friends 2002 Ford Focus and......nothing!
    Brrr.... sorry, I'm confused. Can you list each car (year, make, model) and a description of the symptoms -- no LED lamp test, no connection, voltage b/w pins 5 & 16?

    If there is voltage across the pins, there is no reason for the tool not to do the lamp test. Verify by watching the LEDs as you are plugging the unit in.

    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
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    Well, sometimes I've seen interfaces stuck in little Fords, I don't know why.. If you know which serial port the interface generates in your computer, then you can do some testing with famous windows hyper terminal..

    As you have win 7 you probably do not have hyper terminal so you can download it from here: http://files.digitizor.com/wp-conten...rterminal1.zip

    Then just open it, make a new connection, choose the COM port the scanner has, 9600, 8, N, 1, hardware and press ok.. Wait for a sec or two and check if you can write sth.. Then just write ATZ.. This should answer ELM 327 v1.3a or sth like that. This is to check that at least the interface is working properly.. Then you can send 0100 to check the available PIDs and see if the vehicle is responding..

    The software you mentioned is great but sometimes it is better to check things "by hand" so you can understand what is going on under the beautyful screens and buttons..

    Please update progress!

  6. #6
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    Hi lads,

    Thanks for the help but I think we're getting confused a little.

    If you look at the screenshot in the original post it shows that the interface is being picked up fine by the pc.

    I tried connecting with the same interface to a 2006 Citroen C3 and it connected fine.
    Tried connecting to a 2004 Ford Fiesta and it connected fine.

    Tried it with my 2004 Ford Focus and a friends 2002 Focus and it was the same as the screen above, no connection to ECU.

    I assume this would rule out the interface as being faulty as it connected to the other cars.

    I will check the lamp test and try hyperterminal also on my car.

    Does the lamp test happen when the interface is connected to both the pc(usb end) and the car(obd end)? Or when it is just connected to the car?

  7. #7
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    Hyper term will also help you see if the car responds, not only if the device is working..

    Dunno about the lamp test as I have a bluetooth device..

  8. #8
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    Just an update.

    Still didn't try the hyperterminal but tried on another 2000 year Focus and it didn't work either. Tried it on a 2007 Renault Laguna and it connected fine.

    Surely there must be something about the Ford Focus that is the problem? I will try the hyperterminal later and check the lamp test also.

  9. #9
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    Yes probably there's something special with the Focus, still If you connect with Hyperterm we'll get to know all the truth, if it gets connected, if it gets initialized, if it supports ANY pids at all etc..

    FIY in a 1997 Ford Fiesta 1.25 OBD2 works perfectly!

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