P04 Disassembly

[kur4o]

INstead of monitoring pids you can log ram locations. If you find the RAM registers that are used for input / output pins on pcm, and do some hardware analysis of potential unused pins, you are good to go on custom input switches and drive output relays and pwm solenoids also. It is not really easy to do, but with some effort it can be done, On earlier lt1 pcm there were tons of unused stuff left over from developers.

I already figured that p04 pcm can drive 6 individual coils, the pins and hardware is there but we lack the software config knowledge.

[zack4200]

The 3.5L LX5 Shortstar in the 1999-2002 Olds Intrigue and 2001-2002 Olds Aurora used a P04 and had individual coils

http://www.gearhead-efi.com/Fuel-Inject ... CM-pinouts a bunch of the options available on various p04 applications are listed here, along with the pinouts used for each

[MudDuck514]

The 3.5L LX5 Shortstar in the 1999-2002 Olds Intrigue and 2001-2002 Olds Aurora used a P04 and had individual coils

http://www.gearhead-efi.com/Fuel-Inject ... CM-pinouts a bunch of the options available on various p04 applications are listed here, along with the pinouts used for each

I THINK someone has posted a bin for one of these PCMs on here somewhere.
If NOT, I guess I could try to locate the PCM I have somewhere around here and try reading it.

Mike

Just looked in my downloaded bin files and there IS an "aurora.bin" there along with a couple of text files.
I beleive it is in THIS thread viewtopic.php?f=42&t=7690&p=113343#p113311
IF someone can tell me HOW, I can attach/upload them here.

[zack4200]

Create a zip containing them, then under the reply screen there are two buttons - 'Options' and 'Upload attachment'.

[antus]

Yep, but not the quick reply, the full blown "post a reply"

[MudDuck514]

Ok so here goes.
Hopefully this will work, AND be of some use to someone here,
Mod Edit: The contents of this zipfile are duplicates of: Re: PCM Hammer P04 Support Project

Olds Aurora.zip

(520.23 KiB) Downloaded 256 times

Mike

[Gampy]

MudDuck514,

Where did this zip file and contained bin come from ??

-Enjoy

[Gatecrasher]

Pretty cool. This was the 2nd of 2 operating systems for this. I'd have thought it would be a whole different hardware family on account of the coil arrangement.

[antus]

In this era, they also changed the OSID for each calibration change. It may or may not be a whole new OS.

[In-Tech]

^^^This, GM would change OS id to show you they had updated, even if they didn't really change anything.