Operation CHARM: Car repair manuals for everyone.

Description

DESCRIPTION




Each radiator fan is made of plastic. It is driven by an electric motor, which is retained on a shroud.




To reduce fan noise, the fan output is two-stepped and can be switched to Low or High according to the load on A/C, coolant temperature, and vehicle speed. This control is accomplished by a circuit as shown in the figure, between serial and parallel instead of using components such as resistors.