Transmission Configuration

[Bruce & Lisa Wilcox]

Thanks for the information Ken.

I poked around a little more and found another possible way to figure out if
the BIN was setup for a manual or automatic transmission.

The byte is called the "manual transmission parameter". It is located at
0x0688 in my application (87 MAF TPI 1227165 ECM). If the byte is set to 1
it is a manual transmission. If the byte is zero, the transmission is
defined as an automatic.

I tested this theory on two 87 GM vintage 165 bins. The manual transmission
bin was 1135acyc and the automatic bin was 1099acxt. The manual bin has this
bit set to 1 and the automatic bin has the bit set to 0.

Best Regards,

Bruce Wilcox


-----Original Message-----
From: Ken Kelly <kenkelly at lucent.com>
To: gmecm at efi332.eng.ohio-state.edu <gmecm at efi332.eng.ohio-state.edu>
Date: Thursday, September 09, 1999 1:34 PM
Subject: Re: Transmission Configuration


>Bruce,
> The 8051 supports 94-95 LT1's in all bodies but the
>Corvette. The 1333 is used in the same year corvettes. They
>actually seem to share the same code. These PCM's have two
>Processors called an Event and a Time side. The time side
>has a Flag that is actually part of the IAC calibration,
>Thats interesting since you refer to the Air Flow Mode
>word.  The flag I found is used in the Corvette Bins I have,
>but not in F-Body bins.
>
>My code starts at 0x2000, so Addressing is all different.
>This flag is a byte, not a bit, But I do have 4 Bytes of Bit
>Flags. There are a couple In the AFR section I haven't
>figured out yet. I will check them accross some chips to see
>if any corelate with Manual trans. Never associated Manual
>trans with Air Flow til I got your note>
>
> Ken
>"Bruce Wilcox (EUS)" wrote:
>>
>> Hi Ken,
>>
>> Are you talking about bit-0 in the 1st Air flow Mode word ( 0x0014) ???
In
>> my application ( 87 TPI / manual), this bit is a zero.
>>
>> Best Regards,
>>
>> Bruce Wilcox
>>
>> > -----Original Message-----
>> > From: Ken Kelly [SMTP:kenkelly at lucent.com]
>> > Sent: Thursday, September 09, 1999 2:47 PM
>> > To:   gmecm at efi332.eng.ohio-state.edu
>> > Subject:      Re: Transmission Configuration
>> >
>> > If you find out let me know. I am trying the same thing with
>> > the 8051. I was told there is actually a byte to define the
>> > manual trans, In practice I find that the corvette sets it,
>> > but the F-Body doesn't.
>> >
>> >       Ken
>> >
>> > "Bruce Wilcox (EUS)" wrote:
>> > >
>> > > Hi All,
>> > >
>> > > I have been poking around in the 87-89 165 BINs to find out if there
is
>> > a reliable way to identify if a BIN was developed for a manual or
>> > automatic transmission.
>> > >
>> > > So far I have not had much luck. I am looking at the air flow mode
>> > words, shift light control (manual), and TCC lockup. Am I looking in
the
>> > wrong place?? If so, What alternative search methods are recommended??
>> > >
>> > > Thanks and Best Regards,
>> > >
>> > > Bruce Wilcox