The driver and passenger heated seat systems each consists of the following components:

The heated seat system will operate only with the ignition switch in the ON position.

The driver and passenger heated seat switches are located in the center console. Battery positive voltage (B+) is supplied to the heated seat switches through the IGN 3 voltage circuit and the CONSOLE Fuse located in the rear fuse block. The heated seat system will turn off if the ignition switch is turned to the OFF position.

The heated seat system is designed to warm the seat cushion and seat back to approximately 44°C (111.2°F) when in the high position, and 37°C (98.6°F) when in the low position. The heated seat module monitors the seat temperature through the temperature sensor signal circuit and the temperature sensor (thermistor) that is located in the seat cushion. The temperature sensor is a variable resistor, it's resistance changes as the temperature of the seat changes. When the temperature sensor resistance indicates to the heated seat module that the seat cushion has reached the desired temperature, the module opens its contacts to remove voltage from the heating elements. The heated seat module will then cycle the contacts open and closed in order to maintain the desired temperature.

Battery positive voltage is supplied at all times to the driver and passenger heated seat modules through the battery positive voltage (B+) circuit and the HTD SEAT L or R Fuse located in the rear fuse block. When the heated seat switch is in the high or low position, battery positive voltage is applied through the heated seat switch signal circuit to the heated seat module. In response to this signal, the heated seat module closes it's contacts and applies battery positive voltage through the heated seat element supply voltage circuit to the heating elements. With the heated seat switch is in the HIGH position, battery positive voltage is applied through a 350 ohm resistor in the switch and the heated seat high/low signal circuit to the heated seat module. In response to this signal, the module sets the temperature to high heat. When the heated seat switch is in the LOW position, battery positive voltage (B+) is applied through a 200 ohm resistor in the switch and the heated seat high/low signal circuit to the heated seat module. In response to this signal, the module sets the temperature to low heat.