Fan LO Control Operation
In fan LO control, the PCM switches the FAN LO terminal to the ON position, and that switches the A/C condenser relay to the ON position. Then, current flows from the 12 volt battery to the A/C condenser fan relay, the A/C condenser fan motor, the fan control relay and the radiator fan motor, to create a series connection through the A/C condenser fan motor and the radiator fan motor. Using this series connection, the fan rotates at a lower speed.