Results 1 to 8 of 8

Thread: connecting and running OBD II programs

  1. #1
    Newbie
    Join Date
    Jul 2008
    Posts
    5

    connecting and running OBD II programs

    I have a couple different programs for OBD II a laptop and a cable that have a OBD II connector on one end and a serial connector on the other end. I connected it directly to the vehicle to the computer but I am not getting anything on the laptop. Is there something else I need on the cable or would it just be the com settings.

    Any help would be greatly appericated.

    kwdaye

  2. #2
    Low Bitrate
    Join Date
    Sep 2007
    Location
    Dawson, IL
    Posts
    109
    I suspect it would be the com settings - not enough info

  3. #3
    Newbie
    Join Date
    Jul 2008
    Posts
    5
    I guess I'm wondering if I need some kind of a scan tool between the computer and the vehicle

  4. #4
    Newbie
    Join Date
    Jul 2008
    Posts
    5
    I did some more reading up on it and I now have an interface ordered. thanks for the reply.


    Kevin

  5. #5
    Newbie
    Join Date
    Sep 2008
    Posts
    20
    +1 The point of the PC software should be to interpret the OBII info. If the port is not enabled then you'll get nothing.
    Quote Originally Posted by Rick99TAWS6 View Post
    I suspect it would be the com settings - not enough info
    how will the diagnostic tool you're buying interface with the computer?

  6. #6
    And then I was mod. Tidder's Avatar
    Join Date
    Sep 2003
    Location
    New Mexico, USA
    Posts
    4,211
    Yup, definitely need an interface/scantool. Serial data does not come out of the OBD port. There are all kinds of different "standards" that would have to be interfaced with, then outputted via serial.
    Tidder

    Try RevFE
    The best resurrected frontend I've ever used, period.

  7. #7
    Constant Bitrate
    Join Date
    May 2008
    Posts
    223
    Well, technically it is serial, just not RS232 and certainly not using the same pinout.

    The confusing thing for some people is that the cable used to connect the OBDII port to many scantools uses a DB9 connector but it is not meant to connect to a computer's serial port.

  8. #8
    And then I was mod. Tidder's Avatar
    Join Date
    Sep 2003
    Location
    New Mexico, USA
    Posts
    4,211
    True, but trying not to confuse the newbeans.

    If you want to get extremely technical, firewire, USB, ethernet, SATA, PCI Express, etc are all serial. But most people don't think of them in this way.

    Just tryin to keep it in the simple realm so nobody gets lost.
    Tidder

    Try RevFE
    The best resurrected frontend I've ever used, period.

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •