For 1990-2009 cars only
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 pump assembly. The power seat cushion air control module and 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.
Driver Lumbar Support
| • | The solenoids and relays within the power seat cushion air control module are grounded from G305 circuit 1450. Voltage is supplied at all times to both of the lumbar inflator switches from the DEFOG/SEATS Circuit Breaker 12 through CKT 1240. The driver and passenger lumbar inflator 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 inflator switch, lumbar switch, is pressed to the inflate position voltage is supplied through the switch, through circuit 904/766 to the solenoid within the power seat cushion air control module. Simultaneously battery voltage is applied to 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. The other side of the motor is grounded through G305. 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 inflator switch, lumbar switch, is released. |
| • | Operation of the driver bolster support and the passenger lumbar switch is identical to the driver lumbar switch. |
