Diesel Data: Automotive Repair

Radiator Cooling Fan: Description and Operation

SYSTEM OUTLINE

The radiator fan motor and A/C condenser fan motor is rotated according to the condition of the engine temperature, and the A/C system. The FAN NO.1 relay, FAN NO.2 relay and FAN NO.3 relay are turned ON or OFF to rotate the two fan motors at low speed (Serial) or at high speed (Parallel).