High Blower Speed

When the High blower (4) speed is selected, the HVAC control assembly applies voltage to the blower motor switch through the off blower motor control circuit. The blower motor switch will direct the voltage through the high blower motor control circuit. When the control side of the relay is energized, the blower motor is connected directly to battery voltage through the blower motor supply voltage circuit. The ground circuit provides a ground path for the blower motor and blower motor relay.