cooling of the engine? or you, A/c? cooling.
guess at engine cooling....
deep in side the PCM is answer
better, its now software , there. .
the pcm on new cars, have a EFI sensor called ECT
the designers woke up one day, and said hark, why have 3 sensors
1 for fan
2 for A/c
3 for EFI.
answer, was, you don't.
the FSM is free, to see, and look at that.
why not post the symptoms so we can tell you what is wrong and not guess.?
The ECT is the main engine coolant temp sensor
if this sensor is over about 215f, they PCM closes the rad coo
i must warn you , if you dont have A/c as some dont. the engine has
a fan clutch, as fully stated in the FSM.
free to look, posted 100s of times here. but there it is,
see engine cooling chapter.
then see the schematic for the wiring of the fan relay.
both pages tell you what you have.
if its HVAC cooling, then see HVAC