2005 Downstream O2 sensor wiring

I have a brown wire, green wire, green wire with white stripe, and a grey wire with white stripe.

The grey wire with white stripe is larger than the other 3 wires.

Does anyone have the info to wire up the O2 sensor?

O2 sensor has a 2 whites, a black, and a grey wire.

 

your wire colors do not match up to the schematic, you sure you have the right connector? Here are the 2005 circuits for the O2 sensors.

 

I appreciate the help!

This is what I'm working with.

 

thanks, do you have the 4cyl or 6 cyl? I didn't check the 4cyl wiring diagram, maybe that has a gray wire.

 

I was wrong, the 4 banger also does not contain a gray wire

 

4 cyl 2.7L

 

Black wire with white stripe?

 

Do you have any advice for me to get this O2 sensor wired up?

 

Mouse chew through the wires? Why not just some butt crimps and be done with it.

 

I can butt crimp them with the O2 sensor but need to know how to wire the new O2 sensor up?

 

Where did you get that sensor?
It looks used?

 

being that the wires do not match up to any of the schematics, you have about a 25% chance of getting it right.

 

For the sensor, here are the pin outs, you’ll need to match up with the truck. Again your wire colors don’t match anything so it would be a SWAG at best.

 

What I would do is get a voltmeter and measure each wire with key ignition on.

To check the heater circuit, One wire will be +12V that’s the +B terminal. One will have no continuity to ground with ignition off and continuity to ground when switched on, that is the HT2B terminal.

For the other two signal wires, you’ve got a 50/50 shot. If it’s not working right, reverse them.

 

Sensor and wires are as I found them. Sensor has been on truck since i've owned it

 

Best I can come up with
Now maybe some one can tell us what ones are signal + / -

 

I originally posted grey wire with white stripe, that wire could also be a faded black. Truck is an 05 tacoma

The green wire with white stripe could be blue/ faded

Black wire with white stripe = black wire
Green wire
Brown wire
Blue wire with white stripe = blue wire

This fits the schematic?