PCM Documentation?
Thread Starter
Racer
Joined: Feb 2005
Posts: 352
Likes: 1
From: Dayton OH
PCM Documentation?
I've done some searches, but I can't find anything like this on the forums or otherwise. I've been playing around trying to read some information from my PCM using made-from-scratch software (i.e., not using a scanner or overpriced editting utilities).
Does any documentation exist that explains how to interface with the PCM? Any lists of PCM memory locations for various information? I don't really want to poke around in the dark much more.
Thanks
Does any documentation exist that explains how to interface with the PCM? Any lists of PCM memory locations for various information? I don't really want to poke around in the dark much more.
Thanks
Racer
Joined: Jul 2001
Posts: 386
Likes: 0
From: Round Rock, Texas, USA
You might find this interesting as just some tidbits of information.
I have never tried to do it myself, but I believe all the communication protocols for OBDII are documented in SAE J1979. So, you might try getting a copy of that.
You might also check out:
http://www.scantool.net/forum/index.php
and
http://www.hptuners.com/forum/YaBB.pl
(they used to run a forum dedicated to hacking PCM's, but that one no longer exists; however, much of that info was moved to the HPT forum)
I have never tried to do it myself, but I believe all the communication protocols for OBDII are documented in SAE J1979. So, you might try getting a copy of that.
You might also check out:
http://www.scantool.net/forum/index.php
and
http://www.hptuners.com/forum/YaBB.pl
(they used to run a forum dedicated to hacking PCM's, but that one no longer exists; however, much of that info was moved to the HPT forum)
Melting Slicks
Joined: Apr 2005
Posts: 3,418
Likes: 1
From: Chicagoland Area IL
