Blower Motor Switch: Description and Operation

The rear heater-A/C blower motor is controlled by a rotary-type blower motor switch, mounted in the rear center console. The switch allows the selection of blower motor speeds, Auto and an Off position when the front control is set to Rear position, otherwise the front unit controls both front and rear operation. The blower motor switch directs the blower motor ground path through the blower motor resistor.

When the ATC display reads REAR AUTO or when the rear fan is off, the switch located in the center console between the second row seats is not functional. When the ATC display reads REAR, only the rear seat occupants control the rear fan speed from the rear switch. When in the Rear mode, the rear occupants can set the rear switch to any fan speed including OFF or AUTO. While in the Auto position, the rear fan speed will be automatically controlled. Refer to Body Diagnostic Procedures for further diagnostic information.