b16egva

Ok, I have a 1995 Honda Civic EX W/JDM B16 Swap With P30 ECU.

Ive been having some issues with CEL's lately, specifically for O2 Sensor, and Knock
Sensor.

I replaced the o2 sensor, Cel went away. But i cant figure out this knock issue. I found this information:

---5G Wiring Information

B16A2 in EG Honda Civic

There are 6 lines to check on

Engine Side
ECU Side
Desciption
Wire Color
Pin/Connection

VTEC Solenoid Yellow/Green A4
VTEC Oil Pressure Sensor Blue (passenger side harness) D6
VTEC Ground Black chassis ground
Knock Sensor Red/Blue D3
Evap Purge Power Yellow/Black 12V power (hot in ON or START)
Evap Purge Solenoid Red A20

I checked all of my VTEC Stuff, Colors match and they look ok.

This is where it gets confusing. When I went to change my knock today, I noticed that the one that was hooked up to the old one is a 2P connecter, with 2 wires coming out of it. The Knock only has 1 pin, so im assuming it requires a connecter with just 1 wire going to the harness.

Heres where it gets interesting, the colors of the 2 wires on the 2p connecter are as follows: Yellow/black, and a red one.

In the description for the EVAP Purge stuff, it has the same wire combos, but its not clear to me if both the wires go into one connecter. Im thinking maybe that either:

1. The wrong 2p connecter is hooked up to the knock, and the knock one is hooked up to something else Incorrectly
2. whoever did the swap left that 2p connecter for the knock, and just didnt properly wire it to the ECU
3. That 2p connecter is actually for something else, and there IS NO wiring for knock, it needs to be streightwired to ECU, and the person just though thats where it went.


God...Im so lost people, Help!

b16egva

Where on my car would my Evap Purge power, and purge selenoid be?

b16egva

any ideas? ive been working on this for DAYS, im so tired.

crxfornow

all you have to do is run a wire from the knock to the ecu easy as that and for the purge thing are you gettin a code for that? if any more questions just pm me ive done multiple swaps

b16egva

I dont "have permission to use messaging. My AIM is KEYBOARDxCOWBOY. If you dont have aim, whats your email. I really need help

zebvaj

which motor harness are you using? if you are using the stock ex wiring harness you won't have a knock sensor plug for it. you might have to get your ecu chipped to not have that annoying CEL for a p30 ecu. However you could get away by just using your stock ex ecu for a while because it has no knock board in the ecu so you won't throw a code. Try to make something out of that garbage i just posted...

top_notch

hea bro how u look up for the diagram....to hook up the vtec controller
i got a b16 jdm motor...........hook me up with the diagram im new on this site.........can figer out to search on this site.............................

D16Z6TURBO

knock sensor should be one wire your car never had so yes it will have to be hardwired in and the evap plug your talking about shouldnt throw a code at all and isnt used in your case the Z6 had that sensor but a JDM B16 doesnt at least thats how mine works

99CivicSiBrian

Right.
JDM had no Evap selinoid, but I don't see why you'd get a code for that.

Are you using SIR-II B16? Meaning OBD-1, hydro tranny, etc.?

I'm about to have this same problem as soon as I put the p30 in (this afternoon). How do you hardwire the knock sensor wire into the ECU? I guess what I'm asking is is there already a lead in the ECU plug at that pin, or do I need to find one from a doner car?
B

MrMike

if your not going to use evap, the plug with the red and yellow/black wire, u can use that for knock sensor, but u have to switch the evap pin to the knock sensor pin which is D3 at the ecu.