The fuel temperature sensor is integral to the fuel pump. The pump is located in the fuel tank.
I attached the entire wiring schematic for the powertrain management system below. I highlighted the fuel pump wiring as well as the fuel tank pressure sensor.
Here is a link you may find helpful when testing wiring:
As far as the sensor is concerned, there are specific diagnostic trouble codes related to different sensor related issues. If you haven't, I recommend having the computer scanned to see if there are stored codes. Here is a quick video showing how it's done:
I realize most people don't own a scan tool. However, most parts stores will do it free of charge.
Let me know if this helps or if you have other questions.
See pics below / Note: Pics have been cut in half to make them readable. I did overlap them so you can follow from one to the next.
Images (Click to enlarge)
Friday, July 23rd, 2021 AT 9:43 PM