 O2 Sensor Wires |
 May 3, 2003 - 1:15 PM
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Enthusiast Joined Feb 4, '03 From Birmingham United Kingdom Currently Offline Reputation: 0 (0%)  |
Hi Guy's,
I have a Celica GT Jap Import does anybody know which wire's are which on a 4 wire O2 sensor, I have 2 black, 1 white,1 blue. I need to replace my O2 sensor & I can get one but I have to wire it up to my existing plug socket. The one I have been offered has the following wires, 1 signal (black) 1 12v supply (white) 2 earth (1 grey and 1 white) |
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May 3, 2003 - 1:28 PM
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 Enthusiast  Joined Mar 3, '03 From cyprus Currently Offline Reputation: 0 (0%) |
i am not so sure about the 2 earths? what for?
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May 3, 2003 - 2:28 PM
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 Enthusiast Joined Dec 21, '02 From Italy Currently Offline Reputation: 0 (0%) |
One earth is for the heater and one for the sensor.
Ok....in the original sensor the white wire is the signal wire, 2 blacks are 2 earth and the blue one is the heater. Hope this helps!!! 
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May 3, 2003 - 4:15 PM
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Enthusiast Joined Feb 4, '03 From Birmingham United Kingdom Currently Offline Reputation: 0 (0%) |
Thanks Edo for your information much appreciated.
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