Re: [opendiag] Re: Help with Jeff's board

Hi Terry,
i remember "snooping" on vag-com's obd-ii "test" with
a piece of software that monitors a pc serial port.
what i saw was a little weird - it seemed to send
bytes out but didn't care if anything came back -
something like that - if i'm wrong on this maybe Uwe
can correct me.
anyway, maybe you can "borrow" an obd-ii & iso-9141
compliant car (1996+ vw or '96+ mazda, etc.) and
"test" your interface using vag-com.
also, see andy whitaker's web site, he has some very
good software up there. he also sells hardware.
if you have access to a scope try hooking that up -
you can actually see the 5 baud bit pattern going out.
lacking the above, buzz your circuit out again.
i can't see thoroughly testing the interface stand
alone - if you send something out, you want something
else to answer back...like the car ecu.

--- sepulttheman <dontuknow@...> wrote:
> Hi Rick,
> I'm not sure about the L line thing, I just assumed
> it does use it.
> But as for the Passat not being VAG-COM compliant,
> I'm sure it is.
> The read-me with VAG-COM specifically lists my
> vehicle's engine (90-
> 92 2.0L 16V) as workable except with the "issue" of
> requiring the
> Start Baud rate being set to 4800, which I did. Is
> there any way to
> test the board by itself? I've read some things
> here about hooking a
> battery to the car side and trying to communicate
> with it. How does
> that work? And what software is required? A link
> to an appropriate
> thread would be appreciated. Meanwhile, I'm going
> to do some reading
> of this group:).
>
> Thanks again,
> Terry
>
>

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Received on Wed May 29 10:13:14 2002