fan works or dont work

Question Description

My fan on a 2006hhr works sometimes and not all the time.my book shows no fuse for it.Is it tied into something else

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Final Answer

fan is kick in when ac turn on or engine reach the high temperature to be cold down by order com from the engine temperature sensor
to the ECU THEN TO THE fan RELAY .some car fan have own ecu . if the car not overheat and the fan kick in then shut of kick in shot of this is normal if the car overheat LOOK for air bubble in the cooling system bad thermostat , faulty temperature sensor . relay . ECU .

yaser (6)
Cornell University

This is great! Exactly what I wanted.