I went to look at my friends Eg / GSR hatch today to get an idea of the vtec wiring and see where some hoses went.

He has a 92 Cx (98GSR) so most of the vtec wires were already wired.

Anyhow, he had this one wire that ran from a green harness under the intake manifold that ran into the back of the motor. I could not get a picture of the harness since it's under the manifold. It's in the dark area:



What's confusion me is the fact that I was told the IAB is shown below. I could clearly see on his motor that the wire in the pic up top was not spiced in at the red / black wire in my 2nd pic.



So what's right? I know his vtec works (even though he has a CEL -->No o2)

Here's where the wire in the first pic meets the ECU:



I know it's not a good shot, but I didn't have any tools to remove the ECU from the kick panel, sorry!

 

I'm still not sure of what plug you're referring to. Are you referring to the green plug on the back of the motor? Kinda looks like the vtec oil pressure sensor plug?

 

Yeah, it's a green plug. I guess it's one of the vtec wires that was not wired in the 92 civic. I believe 2 of the 4 were pre-wired.

If no one knows then I'll pull his ECU when I see him next and check the pin location there.

The harness is right where the arrow points except it faces the front of the car (plugs into the rear of the motor from what I can see)

 

Well I was looking through the pics I took today and I found one that has the green harness I am talking about:



Any ideas?

 

looks like the knock sensor. By harness i assume you mean the plug in the pic.

Look at this and it will tell you which wire it is.

http://tiiite.ghettoracer.com/...1.jpg

Pics courtesy of ff-squad.