The fan mounted on the back of your Toyota Corolla’s radiator helps to draw more air through it and help with the cooling process. Normally, the fan will kick in when the engine gets hot.
So if you notice it not working and the engine heating, its relay/fuse could be busted, or its electric motor is not working any more. But that’s a rare fault, so the check the fuse first.
To do so, you will need a replacement one according to the user’s manual. Then pop up the hood and locate the fuse box in the engine bay - it should be somewhere on the driver’s side.
Look on the fuse box’s cover or user manual and locate the fan’s fuse. Now open the cover, extract the corresponding fuse and replace it with the new one.
Start the engine and go for a drive to heat it up. Then stop somewhere and check if the electric fan works.
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