On the intake side of the cylinder head, which temp sensors are which and what is their function?

I know that he 3 contact one between cyl. 3 & 4 controls the high speed on the aux. fan (confirmed bad), but what about the others?

Which controls the cold start?

TIA for any guidance.

I have the CD's, brit Haynes and Bentley manuals and none offer clear explanations or locations.