Each seat incorporates a power inflate/deflate system which alters the shape of the seat using air bladders.

Both power seats operate utilizing the power seat cushion air control module and the pump assembly. The power seat cushion air control module and the pump assembly are mounted under the passenger seat. A seat jumper harness from the passenger seat connects the circuitry and the bladder tubing to the driver seat.

Voltage is supplied at all times to both of the lumbar adjuster switches from the DEFOG/SEATS CKT BRKR 30A. The driver and the passenger lumbar adjuster switch has 2 switches on it. One switch inflates and deflates the lumbar support. The other switch inflates and deflates the side bolster support. When the driver lumbar adjuster switch is pressed to the inflate position, voltage is supplied through the switch and the inflate relay within the power seat cushion air control module. The power seat cushion air control module inflate relay closes applying power to the pump assembly motor in the inflate direction. When the pressure switch inside the power seat cushion air control module senses a bladder full/empty condition, the ground to the solenoid valve is electrically opened. In response, the power seat cushion air control module shuts off the pump by opening the ground to the inflate relay until the driver lumbar adjuster switch is released.

Operation of the driver bolster support and the passenger lumbar adjuster switch is identical to the driver lumbar adjuster switch.