[Gmecm] Acquiring ECM schematic

Ryan Hess rgmecm
Fri Jun 16 15:51:07 UTC 2006


Thanks much, Malcolm.  Now if Steve would just move it to the readable 
directory... :p

Now do you or anyone else have any suggestions on where to start with 
creating a schematic from an undocumented ECM?  I'm not familiar with 
the processes of going from a board to a schematic.   The ECM I have here 
(16132240) is extremely similar to the 8331, except that it uses some 
odd chip instead of an IAC driver.  Sequential V8, lots of I/O...  
Perhaps the biggest difference is it's cheap and in junkyards everywhere.  
Thanks,

Ryan


Webmaster at lotus-carlton.fsnet.co.uk wrote: Things come to those that wait :-)

ftp://ftp.diy-efi.org/incoming/01228331.zip

Contains a 3 page schematic of the ECU (incomplete), and 6 pages of scans from the workshop manual with the pinout usage in an Lotus Carlton. 

I do have a full wiring loom diagram for the LC, completer with connector and pin part numbers, but it's approximately 3 feet tall and 8 feet long. Not sure how to scan that - it's almost like a roll of wallpaper.

Cheers,
Malcolm

PS Sorry about the format of my posts - I've set everything to plain text, but my ISP doesn't seem to understand!

-----Original Message-----
From: Ryan Hess [SMTP:rgmecm at yahoo.com]
Sent: 15 June 2006 21:43
To: gmecm at diy-efi.org
Subject: RE: [Gmecm] Acquiring ECM schematic

I hope somebody posts something soon... The wait is making me go out of my mind!  :)



Steve Ravet  wrote:  

> -----Original Message-----
> From: gmecm-bounces at diy-efi.org 
> [mailto:gmecm-bounces at diy-efi.org] On Behalf Of 
> Webmaster at lotus-carlton.fsnet.co.uk
> Sent: Monday, June 12, 2006 5:00 AM
> To: gmecm at diy-efi.org
> Subject: RE: [Gmecm] Acquiring ECM schematic
> 
> Fame :-)
> I have worked out a partial circuit diagram. It's not 
> complete, because I got confused with the DIS/Ignition drive 
> circuits. I'm prepared to put what I've got on incomming - 
> does it work yet ?

The incoming directory is world writeable but not readable, in order to
prevent the bit torrent types from filling it up.  Upload it to
incoming, send a note to the list with the filenames and descriptions,
and I'll get them moved over to the "uploads" directory, which is
readable but not writeable.

--steve


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