didalos

The wires are:
white: 12v heater
blue: sensor signal
black: ground (for heater)
black ground (for sensor)

Looking at the wire connection to the sensor, with the white wire at the top, the ground for the heater is on the left. Here is a handy illustration of where the wires connect to the sensor:
w
g g
s

g on the left is the ground for the heater.

(White for ground? You crazy!

kaymin

iTrader: (11)

Measure current while it's working and since you know the voltage it's easy math to get the resistance.

momostallion

iTrader: (1)

i cant say if that's accurate or if denso might be crazy but i tested resistance between the two black wires at 6.5 ohms... that makes me think it is accurate not to mention the white wire connects to the orange wire to the D35 plug on the car. the orange is the ecu .5v reference ground for the o2 sensor.

i think o2 sensors are pulse width modulation so it's more complicated (for me anyways, im no electrical engineer)

didalos

I went back and found my source on the wire identification, and it turns out I'm going on the word of some random forumer with no references.

So, if anyone has more detail on which wires are which... hit me with it.

packrat

iTrader: (2)

You want the 2 black wires- not sure what the resistance is but I will check tomorrow as I have a universal denso O2 sitting on my box at work..........

momostallion

iTrader: (1)

my 2012 was just like the image below but the colors were completely different. the pinouts are the same though. both black wires are o2 heater. they simply make a resistance loop so order is not important. pin 3 is o2 signal and pin 4 is sensor ground.

http://i606.photobucket.com/albums/t...o/Picture1.png

didalos

momo, the picture implies that the resistor wires are next to each other. On my car, they go White-Black-Blue-Black, so the blacks are at 1-3 or 2-4. Or is that not a valid comparison? Either way, I can try connecting the black wires together later today.

packrat

iTrader: (2)

Universal denso sensor measured 15.8 ohms.

didalos

black-black at 16 ohms got rid of my problem codes. the other two wires are connected to nothing now, and I have a o2 simulator connected to the ECU from my wideband.

didalos

Another update...

The 16 ohm solution I posted does not get rid of the problem codes.

None of the resistor values I tried - 5,6,7,8,16 got rid of the code.

I finally gave in and got a replacement O2 sensor. This also did not get rid of the code. I called the parts guy and he sent me a replacement (nice work Rock Auto) but the replacement had the same problem. Rock Auto told me to get my ECM diagnosed.

I went to the local shop here and they tinkered with it and eventually figured out that the "historical data" needed to be reset in the ECM. This appears to have fixed the codes.

So it may be that the resistor works, but you need to reset the ECM properly to prevent codes?

Now I only wish the shop hadn't put 26 mysterious miles on it...

Golden

iTrader: (1)

Are you just trying to get rid of the code? That can be done on a 2008 GSR.

Email me at golden at goldenevo.com and I can make sure you are disabling the code correctly.