4 wire o2 sensor wires and what they do
07-10-2002, 11:52 AM
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4 wire o2 sensor wires and what they do
hey all i've allready searched this and have looked at my chiltons and i still can't figure out what wire is which... lets see this is what i have
orange+ blue at ecu pinout c18 is green and white wires on 4 wire o2
orange+ black at ecu a16 and black at 02
and the other black is yellow black to switched power... ok so this is switched power
but what are the others
is white and green on the o2 sensor the signal to the ecu? if so why do i have my odb0-odb1 harness conversion wired to seperate wires
i'll scan the schematic later and post. please help it's a p28 ecu and universal o2 sensor w/ (grey 2 whites and a black)
orange+ blue at ecu pinout c18 is green and white wires on 4 wire o2
orange+ black at ecu a16 and black at 02
and the other black is yellow black to switched power... ok so this is switched power
but what are the others
is white and green on the o2 sensor the signal to the ecu? if so why do i have my odb0-odb1 harness conversion wired to seperate wires
i'll scan the schematic later and post. please help it's a p28 ecu and universal o2 sensor w/ (grey 2 whites and a black)
07-10-2002, 02:27 PM
#2
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Re: 4 wire o2 sensor wires and what they do (Nismo240sx1)
The two wires that are the same color, white in your case, should be the heater wires, one is the heater signal, one is heater ground.
The other is a 12V+ signal, the other is ground.
I know this is vauge, but it should give you a start. I have all the colors labeled at home, but I can't get to it for a while, so maybe this will help for now.
The other is a 12V+ signal, the other is ground.
I know this is vauge, but it should give you a start. I have all the colors labeled at home, but I can't get to it for a while, so maybe this will help for now.
07-10-2002, 06:36 PM
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Re: 4 wire o2 sensor wires and what they do (Nismo240sx1)
lol thanks i know what the wires on the universal o2 are signal, ground, heater it's the factory color.... that i'm wodering about.... on the factory sensor what is each color green black 2 whites.
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