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Looking for ECU circuit diagrams ...

Discussion in 'Datasheets, Manuals and Component Identification' started by [email protected], Apr 1, 2011.

  1. Richard@EELTD

    [email protected]

    4
    0
    Apr 1, 2011
    Spend a huuuuuge amount of time googling the various ECUs people want me to repair ...
    But I could really use some of the circuit diagrams.

    Has anybody here come across these?

    Any ideas wouldbe helpful.

    :D
     
  2. davenn

    davenn Moderator

    13,247
    1,745
    Sep 5, 2009
    I presume you are referring to engine management units for cars etc
    seems to be something that manufacturers and licenced vehicle dealers keep very close to them :(

    Dave
     
  3. Resqueline

    Resqueline

    2,848
    1
    Jul 31, 2009
    Yep, about the only ones you'll find reverse engineered (by enthusiasts) are old GM units.
     
  4. MattyMatt

    MattyMatt

    154
    0
    Mar 24, 2011
    I used to have some old Saab ones (like pre-1994), but thats about it... and honestly, they were kinda hard to read (partly in Swedish, and the quality of the PDF was not fantastic). In general though... yeah its hard to find, due to the proprietary nature.
     
  5. Richard@EELTD

    [email protected]

    4
    0
    Apr 1, 2011
    I thought as much. Thought it might be worth seeing if anybody knew where to find 'em though :)
    It's a pain working on them with nothing to help.
     
  6. Resqueline

    Resqueline

    2,848
    1
    Jul 31, 2009
    You don't say what brands of ECU's you get in for servicing. I'm sure you have used Google extensively but here's a nice homepage - with links to other pages as well.
     
  7. Richard@EELTD

    [email protected]

    4
    0
    Apr 1, 2011
    I'm getting all kinds from mechanics at the mo' mainly Bosch but hey :p

    I'm only really dealing with the actual board and components, haven't really learned programming and the like yet.

    Cheers for that page though :D Looks mighty interesting.
     
  8. Resqueline

    Resqueline

    2,848
    1
    Jul 31, 2009
    I'm a hardware guy myself (tho I dabbled with programming at school) but I've managed to reprogram an old GM ECU EPROM somewhat to better suit my engine.
    There are links to sites with schematics (mostly GM) but I'm afraid there's not been much enthusiast hacking done on Bosch ECU's (or anything but GM for that matter).
     
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