phorj Posted October 8, 2003 Share Posted October 8, 2003 I have an O2 Sensor from a RB30, and there are 3 wires... here is the problem : What are the wires for? 1x Yellow Wire 1x Black Wire 1x Red Wire Black and red and not power wires are they... this is standard + / - stuff, but I wouldn't think that the sensor would require external power? Is the Yellow wire the signal wire, and the other 2 heater wires? What is the Yellow Wire for... any help would be V. handy ! Thanks guys... I await speedy reply's Link to comment https://www.sau.com.au/forums/topic/26467-o2-sensor-help/ Share on other sites More sharing options...
phorj Posted October 8, 2003 Author Share Posted October 8, 2003 1) Get a multi meter 2) When you cross 2 of the wires you should get a reading of 10ohm or less... these are the heater wires 3) When you cross the 3rd wire with anything else... it should read 'open circuit'... this 3rd wire is the signal / sensor wire ! just F.Y.I ... Thanks Bozz ! Link to comment https://www.sau.com.au/forums/topic/26467-o2-sensor-help/#findComment-560007 Share on other sites More sharing options...
darkhalf Posted October 8, 2003 Share Posted October 8, 2003 red is power for the internal heater black is ground (other end of heater) yellow is interesting. aftermarket? the ones i've seen are white but would be the actual probe which returns 0-1v depending how much exhaust gas is passing past. note that O2 sensors are matched to different ECUs and the stoich curves may be different (ie an RB30 O2 may have a more narrow curve than the RB25 ECU is programmed for) Link to comment https://www.sau.com.au/forums/topic/26467-o2-sensor-help/#findComment-560405 Share on other sites More sharing options...
Boostzor Posted October 8, 2003 Share Posted October 8, 2003 I have the ca18det and the plug goes. black white red (left to right) on the other side of the plug the black goes to a blue, white to grey and the red goes to a grey with a white trace. So what im trying to figure out is which one is the signal. the instructions say that its not polairty dependant for the heater wires. the replacement has 2 black and 1 blue. (universal 3 wire) Link to comment https://www.sau.com.au/forums/topic/26467-o2-sensor-help/#findComment-560492 Share on other sites More sharing options...
Zensoku Posted October 8, 2003 Share Posted October 8, 2003 If you want to know the difference between the different types of O2 sensors, try this link: (about half way down the page) http://www.ngkspark.com.au/tech_info_oxyge...nsors_index.htm Also, the current NGK Spark plug & O2 sensor catalogue has detailed information on these including pics of the different plugs - great for matching up an alternative to that expensive OE Nissan sensor! Link to comment https://www.sau.com.au/forums/topic/26467-o2-sensor-help/#findComment-560617 Share on other sites More sharing options...
Boostzor Posted October 8, 2003 Share Posted October 8, 2003 Wel sorted it out as gradenko wa nice enough to come past with his multimeter. The white/ centre is the signal Link to comment https://www.sau.com.au/forums/topic/26467-o2-sensor-help/#findComment-560653 Share on other sites More sharing options...
Bozz Posted October 14, 2003 Share Posted October 14, 2003 Originally posted by phorj 1) Get a multi meter 2) When you cross 2 of the wires you should get a reading of 10ohm or less... these are the heater wires 3) When you cross the 3rd wire with anything else... it should read 'open circuit'... this 3rd wire is the signal / sensor wire ! just F.Y.I ... Thanks Bozz ! Should'a just called me to begin with BTW can I borrow your car for a few hours one of these days, need to swap bits to find a fault... Link to comment https://www.sau.com.au/forums/topic/26467-o2-sensor-help/#findComment-569116 Share on other sites More sharing options...
phorj Posted October 14, 2003 Author Share Posted October 14, 2003 when were you thinking... can be for about a fortnight as I'm help Katie move this weekend (didn't get all the crap last weekend)... the I work the weekend after! Maybe Sunday 26th... that's prob the earliest I can do for you ? Link to comment https://www.sau.com.au/forums/topic/26467-o2-sensor-help/#findComment-569349 Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now