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Old 03-12-2004, 06:17 PM   #1
IVI
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Default oxygen sensor wire diagram

does anyone have the wiring diagram for an oxygen sensor 4 wire? the wires out of my sensor somehow got pulled out of the connector and im not sure which wire goes where.
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Old 03-12-2004, 06:26 PM   #2
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Default Re: oxygen sensor wire diagram (IVI)

its the sensor that plugs into the headers.
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Old 03-12-2004, 08:56 PM   #3
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Default Re: oxygen sensor wire diagram (IVI)

white wire is O2 Voltage (0-1V+), the 2 blacks need seperate grounds to most accurate, green need to be a swtiched 12V+ for the O2 heater Click the image to open in full size.
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Old 03-13-2004, 04:08 PM   #4
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Default Re: oxygen sensor wire diagram (Sideout)

i need the diagram. what wire goes where into the connector?
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Old 03-13-2004, 05:57 PM   #5
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Default Re: oxygen sensor wire diagram (IVI)

Made it a really long time ago and have posted it many times, hope it helps. Ignore all the VTEC stuff, I was basically just showing a conversion. Good Luck

Click the image to open in full size.

EDITED... LINK UPDATED


Modified by Kataku2K3 at 10:34 PM 9/12/2006
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Old 03-13-2004, 06:52 PM   #6
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Default Re: oxygen sensor wire diagram (Kataku2K3)

That diagram freakin rocks man. Its times like these that I love to be a honda-tech member.
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Old 03-13-2004, 07:59 PM   #7
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Default Re: oxygen sensor wire diagram (Sideout)

Quote:
Originally Posted by Sideout
white wire is O2 Voltage (0-1V+), the 2 blacks need seperate grounds to most accurate, green need to be a swtiched 12V+ for the O2 heater Click the image to open in full size.
That's only 1/4 of the way right. As my diagram shows you are correct in that the white is the reference output but the green is actually the ground for the entire sensor (ties into the TPS, ECT, IAT gnd.), while one of the blacks is a IGN 12V+ input for the oxygen sensor heater and the other is the ground trigger for the heater which is activated by the ECU.
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Old 03-14-2004, 06:11 AM   #8
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Default Re: oxygen sensor wire diagram (Kataku2K3)

thats a great diagram, but i need it for the 4-wire oxygen sensor. i looked at my friends car yesterday on a lift and i saw that the top right is white the top left is green and the bottom two are black. which one is supposed to have the +12v? the bottom left or the bottom right? how can you check that the wires are properly connected? what will not having an oxygen sensor do besides making your car run richer?
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Old 03-14-2004, 09:31 AM   #9
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Default Re: oxygen sensor wire diagram (IVI)

ok here it is.

black wires are the heater element (you can hook them up either way)no directional polarity required
green is ground for the O2 sesnor
white is the signal
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Old 03-14-2004, 11:21 AM   #10
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Default Re: oxygen sensor wire diagram (Qfactor)

Click the image to open in full size.

k, can someone fill in the blanks on this and make sure the other 2 are right? thats what ive been trying to figure out.

http://ms0834.tripod.com/Untitled-2.jpg


Modified by IVI at 8:39 PM 3/14/2004
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Old 03-14-2004, 11:39 AM   #11
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Default Re: oxygen sensor wire diagram (IVI)

As Qfactor said, polarity for the oxygen sensor heater really doesn't matter but if you want to wire it up the way the factory does, and the way I always do. The black wire on the left (of your diagram) is the IGN 12V+ and the one to the right is the ground trigger which traces back to the ECU (A6).
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Old 03-14-2004, 11:41 AM   #12
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Default Re: oxygen sensor wire diagram (Kataku2K3)

okay thank you. so the wire on the left should have +12v? and the one of the right is just a ground? but they're both for the sensor heater? is the white/green on my diagram correct?
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Old 03-14-2004, 01:17 PM   #13
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Default Re: oxygen sensor wire diagram (IVI)

Yea, you're diagram is fine and the one on the LEFT is a IGN 12V+ but the one on the RIGHT is not just any old ground, it has to trace back to pin A6 at the ECU (this way the ECU can regulate the heater). If you were to just ground the wire on the right to any old point your oxygen sensor heater would always be on (do NOT do this). Like we've said there really isn't any polarity so even if they are backwards it should still work but just to keep things organized I always do how I listed above. Good Luck

EDITED: because I wasn't thinking clearly...


Modified by Kataku2K3 at 7:19 PM 3/14/2004
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Old 03-14-2004, 06:13 PM   #14
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Default Re: oxygen sensor wire diagram (Kataku2K3)

Quote:
Originally Posted by Kataku2K3
you're diagram is fine and the one on the LEFT is a IGN 12V+ but the one on the LEFT is not just any old ground
do you mean the one on the RIGHT is not just any ground?
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Old 03-14-2004, 06:19 PM   #15
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Default Re: oxygen sensor wire diagram (IVI)

Yea, my bad. Just got to typing away, you know what i meant.
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Old 03-14-2004, 06:20 PM   #16
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Default Re: oxygen sensor wire diagram (Kataku2K3)

ya i did, thanks. ill try it when it gets warmer out. its too cold to work on anything outside right now.
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Old 03-25-2004, 07:21 AM   #17
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Default Re: oxygen sensor wire diagram (Kataku2K3)

that diagram was actually not right. it was harder to do than i thought but i finally got it. ive made a diagram which is correct. here it is...

Click the image to open in full size.

http://ms0834.tripod.com/o2wire.jpg
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Old 03-25-2004, 07:46 AM   #18
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Default Re: oxygen sensor wire diagram (IVI)

Can't see the pic. What wasn't right?
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Old 03-25-2004, 10:29 AM   #19
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Default Re: oxygen sensor wire diagram (Kataku2K3)

I had same problem, im going to use the diagram tomorrow to see if it is correct.

Click the image to open in full size.
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Old 03-27-2004, 04:47 AM   #20
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Default Re: oxygen sensor wire diagram (MwGSR)

The diagram above is for the actual o2 sensor side. Does any one have a diagram for the wire harness side. I need this pretty badly.
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