Comms problems

[Len Sabatine]

     Most likely the 1740 needs the 92 BCM for the Data Stream to work .
     The rub will be that the 88 BCM code is no where kin to the 92 BCM,
      at least as far as the 88 car Config.
     I'm not so sure that the 92 BCM will be happy looking at the 88 Car parms,
     then ,  the built in diags in won't work . I could be wrong too.
     One of those things you'll need to test against is how the 92 BCM is wired
     so as to avoid possible problems.   I'm thinking cautious here Scott.
     Len

>Yes, the BCM's are different. The Toronado has (to my knowledge) a unique
>BCM. I don't *think* they made a Toronado with the 1740 PCM. I'll check on
>that tomorrow. If they did, it would probably be the 92 MY.
>
>There is a definate intermodule comms problem. This car has a scan tool
>built into the system. When I access it, I get no ECM DATA. But I can get
>ECM Data with a regular scan tool. I was just curious if anyone knew what I
>would have to change to get them to talk.
>
>Scott
>
>----- Original Message -----
>From: "Len Sabatine" <sabatine at epix.net>
>To: <gmecm at diy-efi.org>
>Sent: Wednesday, August 22, 2001 5:00 PM
>Subject: Re: Comms problems
>
>
> >      I'd suspect the BCM's are different, as most are listed per MY and
> > spec equipment.
> >      There  could be inter module com problem , which _ May be part of the
> > scan tool
> >      Glitch you're incurring. Check if the 88 BCM part matches the 1470
>ECM.
> >      Len
> >
> > >Having some communications problems with the ECM swap on the 88 Toronado.
> > >The BCM is set up to communicate with the original 1228253 and it won't
> > >communicate with the 16141470. When I hook up the scan tool (OTC Genisys)
>it
> > >will communicate as a 92 SC 3800 VIN 1, but if I try to read it as an 88
> > >3800SFI VIN 3 it doesn't (no surprise). What does a scan tool look for or
>do
> > >to initiate communications with an ECM? I'm hoping that this might give
>me a
> > >lead as to what I've got to change in the BCM to make them talk. Has
>anyone
> > >ever played with ECM swaps on a BCM equipped car? Or am I better off
> > >figuring out a way to get a supercharged engine to work on the 8253?
> > >
> > >Scott
> > >
> > >If you get this twice, I tried to send it from work last night, but it
>kept
> > >rejecting it.
> > >
> >
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