After all my years of messing with these cars last night I had one of those wtf moments. Can anyone tell me what this plug goes to. The IAT sensor plug is on a different runner so I am fairly certain this is not that. Any help would be appreciated. Also that plug comes off the main engine harness.

 

Maybe it is for the ELD.

It goes in under that fuse box in the top of the pic...

Check and see.

The ELD is the sensor that is connected to the plate on the main fuses..


Just guessing..

 

I can't find anything there. Also the car was an automatic that I am swapping over. The old auto harness doesn't have this plug on it. Any help is appreciated. With this swap do I just not use it or could it have gone to the manual cars evap canister?

 

What color are the wires? Looks like the connector for intake air temp sensor or the evap canister. List your year/make/model and what wiring harness that is.

 

Could be evap solenoid. What are the wire colors and what chassis is the harness from?

 

The original chassis was a 97 I believe. The wire Colors are blk/yellow. And light grn with white or silver stripe

 

The current car is a 99 civic ex d16y8 auto. I am swapping it over to a manual using a complete 97 engine harness from a manual. I thought the same thing for the IAT sensor, however the colors for that are red/yel and green/blk and I have that one in my hand. As for the small harness that goes to towards the headlights, by the battery it had the plug with the brown head that plugged into the Evap canister. Now being that I am using a different model harness could it be possible that brown plug will no longer be used? Like I said the 99 auto harness did not have this plug on it.

 

The new harness I am using is from a 97 civic ex d16y8. The old harness that came out was a 99 civic ex d16y8 automatic

 

I've got the Haynes manual in front of me and its showing blk/yel and lt grn/wht are the wire colors for the evap emission emission control canister vet shut off valve (coupe ex). That is the plug that I am asking what it goes to so could it be that the Plug I have on the canister now will no longer be used? It makes since to me some the auto Harness did not have this extra plug. Thinking just repin and see what happens when I go to start it

 

Sorry reread your post

 

Yeah sure looks like for the IAT that is installed on the air intake system on 96-00

 

its called "VSV" Evap Vent Shut Valve. it goes on top of the charcoal canister. and connects at A29

 

couse to the evap(black box) on your firewall should plug in on the top of it

 

Well I have looked around and I have a spare black box that you referred to from one of my other civics. This civic however does not have one on the firewall. The question I have is, even though the car did not have can I still install it without any issues? Looking at the box it just has two vacum ports so it appears easy enough. Thank all of you for your input.

 

On the top of my canister there is only one connection and it has the corisponding plug attached to it. I do have the other "black box" as it was refered to, just need to know the vacuum hose diagram. Still searching for that. Thank yall

 

Could this be for the crank sensor? My JDM B20 doesnt have a crank sensor down by the pulley, but the original LS motor did. That plug looks similar to the one I am not using since I just did the bypass trick with the wiring.

 

I believe the guys are correct with it being a evap unit. I just need to find the vacuum line connections for this. The box I have just has two ports and one electrical plug. From what I have read since I am going to be running my obd1 ecu again with s300, then this unit really wont matter if it's installed or not right?