Hey guys I recently bought a g35 and the pigtails were ripped off the o2 sensor so now I need to solder them, I got one side figured out but this side has different colors and I can't seem to find much on these colors. Please help me and thank you for reading.

 

You can download the service manuals, which include the wiring diagrams, here. For future reference you should provide more details on your car - model year, coupe/sedan, auto/manual.

 

its a 2003 g35 coupe manual and im looking in the diagrams but can't seem to find what I need

 

Look in "Engine Control System" (ec.pdf). What are the wires in your image connected to, the sensor or the harness?

 

harness

 

That's what I figured by the colors. Looks like it's sensor 2, bank 1. Look at page EC-156. If the colors on the sensor don't match up and you don't know have the diagram for it, this info probably won't help too much.

 

I just spent like 30 minutes trying to find it myself and I ended up getting a headache. ***** that!! Nissan service manuals suck!!

 

At least it's in a searchable digital format. A "service manual" I had for a previous car was four, two-inch thick books.

OP, something I'm not clear on... you mentioned those bare wires were off the harness - is the sensor missing the connector too?

 

The service manual is fine it just takes a little practice to learn how to use it effectively.

Firstly here is the color code chart from section GI - General Information




Next up, in the following pictures next to the red arrow, look at the LETTERS on the wire, that's what color the wire will be.

You failed to mention WHICH o2 sensor you're working on so here are individual pictures for all four.

First up is upstream sensors in the headers, here is bank 1 sensor 1


Next is bank 1 sensor 2



Now for the downstream sensors in the catalytic converter. Here is bank 2 sensor 1



Lastly is bank 2 sensor 2

 

This has the diagram for the harness with the green wire but I don't have a green wire I have a pink wire and I'm trying to figure out the downstream sensors

 

Ok in the picture you previously posted I see these wire colors

pink w/ black stripe = PB
black w/ yellow stripe = BY
blue w/ black stripe = LB

This is the wire color codes listed for bank1 sensor 2 picture.

You ALSO have another wire not related to the O2 sensor harness in that picture. Ignore that one for now until you get the 3 wires for the O2 sensor harness squared away.

 

This is the one you need.

 

^^^

I found those pics in the service manual but figured its not correct since it only shows 3 wires...and the O2 sensor has 4.

 

It's correct, that 4th wire is for something else. He'll just have to chase that wire down and see where it goes.

 

There are indeed four wires going into connector F11 (and F12). You didn’t highlight switched power on pin 2.