Warning: The electric fan of the engine cooling system turns on and off depending on the air temperature and can sometimes turn on even when the engine is not running. When performing any work near the fan blades, use extreme caution to avoid injury from the fan when it starts. The fan will turn off as soon as the coolant temperature drops - this is normal.
Checking the electric fan of the engine cooling system
The electric fan of the engine cooling system should turn on automatically when the coolant temperature is high.
Checking the air conditioner condenser electric fan
The air conditioner condenser fan should turn on automatically when the air conditioner is turned on.