You might need to disconnect battery. I suggest you flash this pcm on bench. It is very fragile and prone to bricking in car.
eehack is configured to work with v8s[that can explain the weird numbers]. There is a modfied version to work on v6s floating around the site but can`t find the link.
Last edited by kur4o; 10-10-2021 at 10:55 PM.
I tried all that, so I pulled this pcm out and have it on my desk right now. wiring is hooked up as follows Black plug, 30 and 31 12v, Blue plug , 3 12v, 1 ground, 30 serial data. Still doing the same B.S. chances are they did something stupid and bricked the pcm before I tried to read Calibration. Just gotta do a little more digging, if there is some difference ill figure that out. So the 03 P59 i have was a brick and i fixed that after i cloned it, saved the file on my desktop one night when I was drunk with Hammer. Cloned it and fixed the old one. Don't know about the lt1 or 94 v6 this is my second one. First one runs and i drive it and been tuning it.
This wiring is for lt1 pcm. for v6s is totally wrong. I hope you didn`t fry the hardware.
Black
b14 b15 B+
B32 Ground
B19 serial data
Blue
C3 - ign
c17 ,C1 ground
Lets see if you get any communication than might do some more tests.
Shouldn't have if I had no ground on the black, everything was dead. Had some connection in the car but something was keeping it from reading.Originally Posted by kur4o
black
b30 vss input high
b31 5volt output for sensors
You might got lucky both circuits should have protection for short to battery.
Still never worked though from the beginning. I just ordered a spare Pcm from ebay . Kinda makes me mad to get it towed here where I have everything its like $120 and its less than half a mile from the tow service to the car and back to my house. No clue, I did what I was supposed to do with it in the car and would not read. I would be much farther ahead to build the trans and ls swap it. Thats more money though.
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