P2743 Transmission Fluid Temperature Sensor ”B”

I have an '08 Base Taco that has been in storage for ~a year. Just pulled it out because my other Taco's radiator started to leak and needs replaced (work vehicles). So I start it up AC is out, pulled out the cabin air filter and it is pretty well clogged with leaves and what looks to be a mouse nest in the fan. AC still doesn't work so I recharged the AC and is now working great. The check engine light is also on, so I run it and comes back P2743 Transmission Fluid Temperature Sensor ”B”Circuit High Input. I have been trying to find out where this sensor is to troubleshoot but no luck. I was also reading that it could be the harness or wiring for the sensor which I am afraid a mouse might have chewed through. Does anyone know where this sensor or wiring harness is located? Or troubleshooting tips?

I don't mind taking it to the dealer if I have to but if I can save some $$ on labor by isolating the issue ill troubleshoot to an extent myself...

 

Sounds like a critter may have chewed it. I don't know where it is or if you have this doc yet.

http://www.tacomaworld.com/forum/at...307318106-2nd-gen-service-manuals-cia7516.pdf

 

Transmission fluid temp sensor is located inside the transmission, on the valve body. You have to pull the pan to access it. I would for sure check all of the harness though on the outside, since you have already shown signs of rodents.

 

Cant help, I'm just here for the comical sig.

 

Open in ATF temperature sensor No.2 circuit


Transmission wire (ATF temperature sensor No.2)


ECM


I have been looking at the wiring diagrams in the OEM Manual but am having trouble finding where this circuit is on the ECM. Anyone know?

 

Think this might have something to do with it?

 

Ah ha! It's at least a start.

 

I don't know. Maybe. I just figure it is a natural resistor for the circuit, but maybe you are onto something.

 

Natural resistor!