ELECTRICAL FAN CONTROL OUTLINE


BHE014000140T45

• Cooling fan relays No.1, No.2, and No.3 turn on and off to control operation timing and rotation speed of the cooling fan motor according to the engine conditions. Due to this, the radiator and condenser are cooled efficiently, preventing overheating and overcooling.

• The electrical fan control includes the regular-driving cooling function and the after-cooling function.

• The regular-driving cooling function operates according to the engine conditions during the engine operation.

• The after-cooling function operates when the vehicle has stopped at high engine temperature (ignition switch off).

• After the ignition switch is turned off, a main relay on request is sent to operate the after-cooling function. (See MAIN RELAY CONTROL OPERATION.)