o2 sensor? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

makulit054 · 09-25-2007, 08:09 PM

Can someone tell me what the wiring diagram is for the red top o2 sensor. I know which pin the signal wire goes to. What about the heater circuit. What pin is the 12v and ground suppose to be. I read some where that if the ecu doesn't detect the heater circuit then the o2 sensor circuit won't work correctly. I've traced my 12 volts back to the AC relay and the ground goes to the engine. The narrowband o2 sensor is suppose to be 0-1v but I get up 2.5 volts. I've replaced it with a known good but still the same voltage. I do have a LC-1 Innovate wideband. My afr's are 12-13. I just want to double check that my narrowband is wired correctly so my ecu will get the right signals.

09-25-2007, 08:09 PM	#1
makulit054 Zilvia Member Join Date: May 2007 Location: socal Posts: 215 Trader Rating: (1) Feedback Score: 1 reviews	o2 sensor? Can someone tell me what the wiring diagram is for the red top o2 sensor. I know which pin the signal wire goes to. What about the heater circuit. What pin is the 12v and ground suppose to be. I read some where that if the ecu doesn't detect the heater circuit then the o2 sensor circuit won't work correctly. I've traced my 12 volts back to the AC relay and the ground goes to the engine. The narrowband o2 sensor is suppose to be 0-1v but I get up 2.5 volts. I've replaced it with a known good but still the same voltage. I do have a LC-1 Innovate wideband. My afr's are 12-13. I just want to double check that my narrowband is wired correctly so my ecu will get the right signals.