Vented Seat Operation

Each vented seat consists of 4 blower motors and a seat temperature control module. There are 2 blower motors packaged with the seat back heating element and 2 blower motors along with the temperature control module packaged with the seat cushion heating element. The vented seat operation is designed to move cabin air through channels in the foam pad and small holes in the seat covers causing a cooling effect to the occupant.

With the ignition ON, battery voltage is applied through a 15 A fuse to the seat temperature control module. Ground for the blower motors is provided through a single ground circuit and the ground connection.

When the seat heating control module receives a ventilation seat command, it sends a low side drive pulse width modulation (PWM) signal through the blower motor control circuit to the seat temperature control module indicating the seat ventilation command. The module interprets this signal then applies ignition voltage to the blower motors and sends a high side drive PWM signal to the seat back and cushion blower motors indicating the vented seat command. The logic in the blower motors then sets the blower speed to the switch set point. The blower motors run causing a cooling effect to the occupant.