Re: EPROM burning

[Roger Heflin <rah@horizon.hit.net>]

Ok.

The lock is what speed you need to be above and what tps  you need to
be below for it to lock.

The unlock is (once it is locked) how low the speed or how high the
tps needs to go to unlock an already locked convertor.

There is also a value in the header of the table that has the speed
below where it won't lock even if the table says it should.


			Roger

On Fri, 16 Jun 2000, Dan Plaskett wrote:

> Thanks Bruce,
> 
> I have a better understanding now but still can't understand the 4 tables.
> The unlock vs mph I get.  If the TPS is above the table value the TCC
> unlocks, but what does the the Lock TPS vs mph do?  Does the TCC lock up
> unless the TPS is above that value?  Sorry to be so dense but I want to make
> sure I've got this right.  Any tips for figuring out values for the tables?
> 
> Thanks
> 
> Dan
> 
> ----- Original Message -----
> From: "Bruce Plecan" <nacelp@bright.net>
> To: <gmecm@diy-efi.org>
> Sent: Friday, June 16, 2000 10:45 AM
> Subject: Re: EPROM burning
> 
> 
> >
> > > I'm using a 1227165 ECM. Need some help
> > > understanding the operation of the TCC.  Using the TunerCat software and
> > the
> > > $32 calibration I have read chips from TPIS, Hypertech, ADS, Stock 1986
> > > Corvette and a number of others.  I can't seem to make any sense out of
> > > disparate ways they handle the ECM Constant Fields, TCC Unlock (low
> > gears),
> >
> > What speed the TCC Unlocks when coasting.
> >
> > > TCC Lock (low gears),
> >
> > *normal* MPH it engages (non PE)
> >
> >  TCC Unlock (not low gears)
> >
> > High gear unlock when coasting
> >
> > , and TCC Lock (not low
> > > gears).
> >
> > When it locks in high gear MPH
> >
> > Also am having trouble understanding the TPS vs MPH tables for
> > > those 4.
> >
> > When in excess of that TPS value the ecm unlocks the TCC
> > Grumpy
> >
> >   Anybody that can provide some help in the way of an explanation of
> > > the theory or working of this part of the program?  Thanks,
> > >
> > > Dan Plaskett
> > >
> >
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