Fuelly Forums - D15z1 wiring into a 1992 Civic CX chassis

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Ok got some pictures of what I'm looking at... and also dug through the factory service manual and found some helpful wiring stuff.

Everything is plugged up wiring wise except the EGR box on the firewall and the 6 pin plug on the shock tower.

Here is the EGR valve. The colors are Black with yellow stripe and solid red
https://www.bambuilt.com/images/eh2project/IMG_4958.JPG

Here is the shock tower plug, noticed there is the extra one on the vx harness.
It has the following wire colors: white, orange/blue, white/blue, orange, white/black, and yellow/white.
https://www.bambuilt.com/images/eh2project/IMG_4959.JPG

now in the shop manual I found two different things so I copied and pasted them to a jpg.

First this one is the complete ecu wiring for the d15z1 engine in the VX (its a large picture, sorry 56k)
https://www.bambuilt.com/images/eh2pr...u%20wiring.JPG

and here are the ecu pinouts that go with that diagram

https://www.bambuilt.com/images/eh2pr...1ecupinout.JPG

Ok now for the question. If you look in the link to the z1 wiring diagram, you'll see one thing labeled "EGR Control Solenoid Valve" with Black/Yellow and Orange/Blue.
There is also another "purge cutoff solenoid valve" with the colors Yellow/Black and red.

The egr box on the firewall is yellow/black and red, which matches the purge wires, but I thought it would go with the EGR control solenoid.

I'm a bit confused here lol.

on the EGR control box, I BELIEVE that one of them is 12v (black/yellow) and the other one goes to the EGR solenoid.

I'm almost 100% positive of this. I can check my car later and see.

anybody have more input on the wiring for this thing?

I'm only throwing code 41, for the o2 right now

Do you have the five wire o2 wired up properly? If you search this site you should find something on exactly how to do it. The o2 might be dead, also, :(

Quote:

Originally Posted by SVOboy (Post 44766)

Do you have the five wire o2 wired up properly? If you search this site you should find something on exactly how to do it. The o2 might be dead, also, :(

The 5 wire plugs directly into my vx engine harness, but what I need is help with the wiring from the engine harness to the ecu.

I've looked on this site and can't find anything specific for obd1 setups, only obd0

okay, I just remembered something. The o2 sensor on the d15z1 actually has 7 wires going do it. one is a 12v power and one is a ground I think. If it stops snowing by tomorrow I'll get out there and see if I can figure out where everything goes for ya.