Comms problems

[Scott Pearson]

Well I did dig into things some more tonight. The 91-92 Toronados used the
16141470 PCM, so might have a shot with that BCM. I'm going to hit the yards
tomorrow and see what I can find. The only differences I can see would be if
it has a VIC and some of the later Toronados didn't have the digital dash. I
know some of that can be changed through the dash display. It can change
some things for different options in the EEPROM. That's how I put the
Twilight Sentinel in mine. I'll have to get into the service manual and see
if I can do anything about the VIC and dash display. Will post more
tomorrow.

Scott

----- Original Message -----
From: "Len Sabatine" <sabatine at epix.net>
To: <gmecm at diy-efi.org>
Sent: Wednesday, August 22, 2001 10:32 PM
Subject: Re: Comms problems


>      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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