PCM re-pin question!!
08-22-2015, 12:10 PM
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PCM re-pin question!! Just "completed" the PCM re-pin from my '97 to an '03. I've got a few wires that are NOT matching up.
Almost of the colors of the "IC control" wires (2126,2124,2128,2122) are mix matched. The circuit # and function ID are the same, but colors are wrong. Due I trust the color or the circuit #?????
Just to elaborate here's an example.
'97 PCM
Pin #Red 13 Color-PPL/WHT Circuit #2122 Description-Injector #2 Control
'03 PCM
Pin# Red 67 Color RED/WHT Circuit #2122 Description IC 2 Control
'03 PCM
Pin# Red 67 Color PPL/WHT Circuit #2128 Description-IC 8 Control
Do I put the PPL/WHT wire in the first option or the second option? I'm assuming the pin and circuit # are more important than the color but I need some confirmation. Thanks.
I used the pinout diagrams located here:
http://corvetteforum.shelor.net/Corv...ts/Default.asp
If you look at the '97 pinout and compare it to the '03 you'll see the color differences. I would if the colors are wrong and it forced me to mis-label???
Almost of the colors of the "IC control" wires (2126,2124,2128,2122) are mix matched. The circuit # and function ID are the same, but colors are wrong. Due I trust the color or the circuit #?????
Just to elaborate here's an example.
'97 PCM
Pin #Red 13 Color-PPL/WHT Circuit #2122 Description-Injector #2 Control
'03 PCM
Pin# Red 67 Color RED/WHT Circuit #2122 Description IC 2 Control
'03 PCM
Pin# Red 67 Color PPL/WHT Circuit #2128 Description-IC 8 Control
Do I put the PPL/WHT wire in the first option or the second option? I'm assuming the pin and circuit # are more important than the color but I need some confirmation. Thanks.
I used the pinout diagrams located here:
http://corvetteforum.shelor.net/Corv...ts/Default.asp
If you look at the '97 pinout and compare it to the '03 you'll see the color differences. I would if the colors are wrong and it forced me to mis-label???
Last edited by nightman06; 08-22-2015 at 12:36 PM.
08-22-2015, 10:28 PM
#2
Moderator
The '97 Vette PCM is nearly identical to the '98 F-body PCM.
This forum has on old thread on how to re-pin from '98 to '99+:
https://ls1tech.com/forums/pcm-diagn...cm-99-pcm.html
I updated one post a bit to add one missed wire and a typo. That thread might help you.
To answer your question, you must trust the Circuit # and the original pin #. The wire color is meaningless as GM obviously changed the color of various circuits.
This forum has on old thread on how to re-pin from '98 to '99+:
https://ls1tech.com/forums/pcm-diagn...cm-99-pcm.html
I updated one post a bit to add one missed wire and a typo. That thread might help you.
To answer your question, you must trust the Circuit # and the original pin #. The wire color is meaningless as GM obviously changed the color of various circuits.