Newish member and I come with a puzzle

I hope you aren't forcing the probes into the terminals, you will spread them if you do and they will no longer make a good connection.

Your on continuity/diode, ohms is the next section.

 

I didnt cram them in there ill move it over an test it agin

 

Welcome to Broken Tacoma World!

 

3rd time is a harm right fingers crossed

 

You did it half way correct.
The first picture (test) is correct.
Pins 1 &2…


The second test, was wrong.
You are on 3 &4
You need to be on pins 1 & 4.

 

Are you on the sensor closest to the exhaust manifold?
14 ohms is what the heater would read on the downstream O2 Sensor, the upstream AFR sensors should be around 2-4 ohms.


We want to be on these two.

 

I did the wrong one Apologies I’m gonna have to figure out how the heck I’m gonna get my hand up there to get that unplugged

 

Yea that's why I said they aren't in a fun spot, pass side is probably easier to unplug.

 

I got it unplugged on driver just trying to finagle my big old hands in there so I can probe the connectors

 

I'd start at the ECM plug.
Then move to that connector if the results show it bad.
But, where already there.....so continue on.

 

Im not reading anything mite have to wait fir day light this is kind of a train wreck

 

Tried agin but with ground
pen 1/2

 

Gound on 4 an probed positive on ht no reading sayin that if i did it right im try agin in the daylight balancing light phone an probs isnt my gift lol

 

It's slightly out of spec, not by as much as I was expecting though.

I'd really want to check the heater circuit from the ECM with a 1 amp test light to make sure it's good though before replacing the sensor.

 

So prob the connector on numbers 2/3

 

Pin 1 and Pin 2 are the heater circuit, they are the White & Red wires on Bank 1 and the White and Black/White wires on Bank 2.

Pin 1 is Grounded by the ECM to turn the heater on and Pin 2 is Power from the AFR Heater Relay.

You would need to make a high current test light and use it on those two pins to do the test I described above to check the heater circuit.

I have many test lights I've made of varying currents from 100mA to 5A using old pigtails, bulbs and banana jacks.

This is my 5 amp one made from a H11 headlight bulb and connector.

 

That’s pretty cool I don’t know if I have any of that stuff laying around but I’ll check in my junk draws I an prolly put something together

 

Just got home decided to see if she would start and it’s 90 and she cranks but she just will not start in the heat I’m digging around looking to see if I have some parts to make this test light thing

 

Did you check the IGN fuse and orange wire now that it's broken again?

 

Ya so I checked it and it read zero on top but did read in the bottom went ahead and checked the others ign fuses just cuz all good on both sides so I cranked her one more time to just see cranked but wouldn’t start so I pulled the ign 15a fuse flipped it put it back and she started