• The site migration is complete! Hopefully everything transferred properly from the multiple decades old software we were using before. If you notice any issues please let me know, thanks! Also, I'm still working on things like chatbox, etc so hopefully those will be working in the next week or two.

97 GTP ECM wire harnes

M

Mrroddavis2

New member
I am splicing in an blue side ECM harness but whats messing me up is some of the wires have 2 - 3 of the same color wires, how can you figure out which wire go to which pin on the ecm harness there are multiple of 2 or 3 wires of the same color on that blue connector and no way to tell the difference between them!

Can anybody tell me a way to figure this out?
 


Did you cut them all off before labeling each one with pin number? If so Yikes.

Im not sure if a wire diagram would help.

Maybe someone else has a fix for you but I dont think its looking good my friend
 
I went and looked at mine. I didnt take it apart IIRC the blue one is the bottom of the pcm

Just by looking I seen 2 green wires and one has a white stripe on it also, there are 2 banks of wires that feed into the one harness so maybe you can use a process of elimination to right this ship.
 
Thats what I have been trying all day on that blue side of the harness there are 2 blue wires with black stripes, 2 yellow wires, 3 drk green with white lines, 2 red with black line, 2 solid gray and 2 solid purple on 1 side of the harness so I been switching between them earlier today.
Right now when I turn the car on it idle real high, you can hear the air being sucked into the intake cause its really loud when I shift into drive or reverse the trans hits into gear really hard you can hear it and the boost gauge is missing from the info center on the dash.
I am not sure if some of these issues is because of the zzp ECM i am trying out I might put back in my original ecm and figure out what wires go with what while using the OEM ECM
I matched up all other wires on the harness just not sure on the ones that have 2-3 of the same color so I swithed back and fourth some of those wires a couple of times
 
Last edited:


Thanks for the pics I just could not get the pic for wires 28-52 But I finally got her running right yesterday still not sure on 2-4 of those wires and the 3 green and white ones cause 1 wire out the 3 suppose to be for the EGR and the other 2 are just for the AC but she is running I might have to go visit ZZP to get a case learn for the ECM I got from them cause the check engine light is on but they say 97 dont need it
 
You must log in or register to reply here.
Back
Top