O2 Sensor Wiring - Hijack
 

I am in the process of wiring up new oil pressure and fuel pressure sensors which Ecutek has hijacked the 2 downstream O2 sensors as they are tuned out and I cannot for the life of me find the wiring diagram for the O2 sensors. Looked here but the post which had it and many others referenced seems to be gone, or missing the pic/link. I tried Nico Club but all I could find was the generic owners manual stuff. Not sure if I just didn't search hard enough or I am back in the short bus club?! Either way, its too cold outside to sit there with a multimeter searching for which is not the ground. I already know the two white wires are 12v for the O2 heater, so left is black and gray. My oil temp sensor seems to use gray for +12 and black for signal, just trying figure out if Nissan is consistent (not a common thing from my experience) or if black is ground and gray is signal on the HO2 sensors.

P.S. Anybody have any 5v suggestions on nearby sensors, like maybe one of the trans sensors?

You have the Rotrex kit. Is Eugene doing the tune? If so, he will probably know

Dane at SZRpro in Houston did my tune. I work on the side with them as I live locally. Unfortunately, Dane cant recall off the top of his head as the last time he figured it out it was 3am, hopped up on Red Bull, so his memory is a little fuzzy.

I'd send some Red Bull over to Dane :tup:

Here you go

http://www.the370z.com/members/the-b...-o2-wiring.jpg

http://www.the370z.com/members/the-b...tor-wiring.jpg

I found these diagrams on pages EC-604 and EC-575 in the 2011 FSM :twocents:

What is the benefit of EcuTek knowing the fuel and engine oil pressure?

EcuTek can (and I have) built in failsafes for specific conditions. In this case oil pressure too high/low and fuel pressure too low it will boost cut for me to avoid engine damage. There are many other conditions or combination of conditions you can do with EcuTek and get an end result.

TY The Bull.

I'm hooking up the fuel pressure sensor to my Bank 1 rear O2 sensor via Ecutek Hijack. I see from the FSM that Wire position 3 & 4 on the O2 connector both go to the ECM. Which is the signal wire? I'm thinking it is position 4 but hoping someone can confirm.

Thanks

For bank 1 it shows #76 as the input which is labeled W for white and according to the connector #4 is the W

For bank 2 it shows #80 as the input which is labeled O for orange and according to the connector #4 is the O


http://www.the370z.com/members/the-b...-bank-1-o2.jpg

http://www.the370z.com/members/the-b...-bank-2-o2.jpg

Thanks for confirming.

Sorry to bring this back up, im trying to hijack sensor 2 bank 1 and now just getting confused whether signal is black or white? looks like white for input on here (and if so which one?) but I haver seen other diagrams showing Black. Any help much appreciated!!