Help! Need pinout for '04 Vette harness with blue green PCM.
04-04-2011, 01:32 PM
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Help! Need pinout for '04 Vette harness with blue green PCM. I bought an '04 Vette motor with harness and PCM. I would like to keep the DBW, cruise, and use the PCM that I received with the motor.
It has blue and green connectors unit number 12586243. From what I have read the pinout is different.
I really want to get this done soon as the motor came with a 6 month warranty and I would love to hear it run before it's gone!!
Thanks for your help!!
It has blue and green connectors unit number 12586243. From what I have read the pinout is different.
I really want to get this done soon as the motor came with a 6 month warranty and I would love to hear it run before it's gone!!
Thanks for your help!!
04-04-2011, 04:54 PM
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Thanks!! Thanks guys!
This is my first LS motor so I am both very excited and then also worried about making a mistake.
Also seeing as I am planning on having AC I am saving all the wires associated with AC?
This is my first LS motor so I am both very excited and then also worried about making a mistake.
Also seeing as I am planning on having AC I am saving all the wires associated with AC?
04-04-2011, 05:36 PM
#6
It depends. Not sure what vehicle you are working with, but if you want ECM controlled A/C then you will need to save those wires. If your A/C was not originally controlled by the ECM then you can run it on it own bypassing the computer completely. Only difference you will see is a drop in engine rpm which may or may not have to blip the throttle to make up for since the ECM won't know to adjust the rpm.
If you want the ECM to control it, then look for pin 17 on your C2 connector. Should be labeled "A/C request"
If you want the ECM to control it, then look for pin 17 on your C2 connector. Should be labeled "A/C request"
04-04-2011, 05:53 PM
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Ac It depends. Not sure what vehicle you are working with, but if you want ECM controlled A/C then you will need to save those wires. If your A/C was not originally controlled by the ECM then you can run it on it own bypassing the computer completely. Only difference you will see is a drop in engine rpm which may or may not have to blip the throttle to make up for since the ECM won't know to adjust the rpm.
If you want the ECM to control it, then look for pin 17 on your C2 connector. Should be labeled "A/C request"
If you want the ECM to control it, then look for pin 17 on your C2 connector. Should be labeled "A/C request"
I would post some pics of my car when I got it and progress but, I have not figured out how to upload my pics to the forum.
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04-04-2011, 06:22 PM
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Two new questions.
Can I use Pin 70 Blue for the low oil sensor to shut the EFI down in a low oil condition?
On this pin out for the 6423 PCM it says to save pin 75 Blue Off/Run/Crank Voltage. I do not have one. I noticed that the 0441 PCM shows this pin as unused. Will mine work without this wire?? Should I add one? I have plenty of left over pink wire.
Can I use Pin 70 Blue for the low oil sensor to shut the EFI down in a low oil condition?
On this pin out for the 6423 PCM it says to save pin 75 Blue Off/Run/Crank Voltage. I do not have one. I noticed that the 0441 PCM shows this pin as unused. Will mine work without this wire?? Should I add one? I have plenty of left over pink wire.
Last edited by 1bigoldman; 04-04-2011 at 06:30 PM. Reason: clairfication
