esean93

I have to wire up my o2 sensor manually because my engine harness doesn't have a plug.does any one know where the O2 sensor wires are on the ecu shock tower.btw I have a auto ls engine harness.I need to wire up all 4 wires.

esean93

No one know!cmon!help a brotha out too LOL!

Jackal6042

I'm guessing you are talking about this 94 DX with a B18B1 mentioned in your signature. But please confirm so I can make sure I properly help you with your wiring problem.

esean93

Yes that's the one

esean93

bump for help

esean93

Bump

esean93

Help me plz

Jackal6042

Sorry I haven't been online in a while, my bust. I'm at work so I can't upload scans from the Factory Service Manual right now but I will work it when I get off work tonight.

esean93

Wow thanks alot man.that would be really helpful!

esean93

Bump for help

Jackal6042

Sorry bro, I haven't been around for a while...

Here is what you need though. The O2 sensor runs through the C212 connector (passenger side shock tower) to the ECU. The pinouts on page 3 are when viewing the clip from the wire side with the locking clip facing up. I hope this helps.

esean93

yes page 1 and 2 help alot.yellow/black wire runs to the main relay,orange/black goes to the the a6 teminal on the ecu.am i reading it right so far?
i dont get how to read these shock tower plug codes:c111 c212
thanks a bunch for the upload man!!

Jackal6042

Yeah again sorry it took me so long to get this to you. I might have some other helpful schematic stuff to upload later. As for connector codes, C111 is the plug on the engine harness that attaches to the O2 sensor. C212 is the engine harness to chasis harness connection on the passenger side shock tower mount. Just look at the clips for some open spots, and use pig tails cut from other under hood Honda clips. Reason being is because they have that waterproofing rubber plug and you want to wire it in legit. Also be sure to solder and heatshrink your connections, don't use crimp connectors and electrical tape as they may increase the resistance in the circuit. Which could cause the sensor signal to be modified as it travels to the ecu... Well modified isn't the proper word for it, signal strength can be reduced to/from the sensor.

esean93

Don't worry about it man atleast u took the time out to help me out!I figured out where the connections for the 3,4 wire but what about the green and white wire.I beleave they are grounds but do they also go through the the passenger shock tower plug c212 or are they just grounded on the engine?

esean93

I just hit a jackpot!!I found my old hynes repair manual!!it has the complete wiring diagram!ill post it later so everyone else running into similar prob can use it.
White-d14 terminal
Green/white-intake air temp sensor
Yel/blk-pin 6 on connector c125(plug in the driverside shock tower with all yel/blk wires)
Org/blk- a6 terminal on ecu

esean93

There is a prob like always haha.I looked at the harness closely and I found cut wires so dug in a little bit and they are just a completely different color that the ones I posted above.this is a later model integra motor.the four wires are:grey,yel/blk,green/blk,blk/white.so my question is which one connects to which wire on the o2 sensor?

esean93

Just so someonebafter me can use this.
For b18b1 engine
White-grey
Yel/blk-yel/blk
Grn/white-grn/blue
Orng/blk-blk/white

torinored eh9

thanks this thread helped me!

esean93

im glad to hear it buddy!i dont even have the civic anymore though!
s2000 makes up for it!