The driver and front passenger heated seats each consist of the following components.

The rear integration module (RIM) is also involved in the operation of the heated seats.

The heated seat system is designed to warm the seat cushion and seat back to approximately 42°C (107.6°F) when in the high heat position, and 37°C (98.6°F) when in the low heat 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 has reached the desired temperature, the module opens the ground path of the heated seat elements through the heated seat element control circuit. The module will then cycle the element control circuit open and closed in order to maintain the desired temperature.

Battery positive voltage is supplied to the driver and passenger heated seat modules from the rear fuse block IGN 3 RR Fuse when the ignition is in the ON position. This voltage is used to power up the module. Battery positive voltage is also supplied at all times to the heated seat modules from the rear fuse block; HTDST LF Fuse for the left heated seat module or HTDST RF for the right heated seat module. This battery voltage is used by the module to apply voltage to the heating elements. Both modules are grounded through the module ground circuits to G301. The heated seat switches are grounded through the switch ground circuits and G201.

The driver and passenger heated seats are controlled by a separate heated seat switch. When the heated seat switch is toggled toward HI/LO, the heated seat high/low signal circuit of the heated seat module is momentarily grounded through the HI/LO switch contacts. In response to this signal, the heated seat module applies battery positive voltage to the seat cushion/back heater elements, setting the temperature level to high heat. The module also applies battery positive voltage through the heated seat high temperature indicator control circuit to the heated seat switch illuminating the high temperature indicator. When the heated seat switch is toggled toward HI/LO a second time, the heated seat high/low signal circuit of the heated seat module is again momentarily grounded through the HI/LO switch contacts. In response to this second signal, the heated seat module sets the temperature level to low heat and applies battery positive voltage through the heated seat low temperature indicator control circuit to the heated seat switch illuminating the low temperature indicator. When the heated seat switch is toggled toward OFF, the heated seat off signal circuit of the heated seat module is momentarily grounded through the OFF switch contacts. In response to this signal, the heated seat module removes battery positive voltage from the seat heating elements and the appropriate temperature indicator. The heated seat module will also turn off the heated seats whenever the ignition switch is turned to the OFF position.

There are 3 levels of load management controlled by the dash integration module (DIM). The DIM sends the status of load management to the rear integration module (RIM) via a class 2 message. In response to this message, the RIM then signals the heated seat modules through the heated seat control module inhibit signal circuit indicating the current load management level. During load shed level 0, the RIM does not inhibit the operation of the heated seats. During load shed level 1, the heated seats that are on are cycled 10 seconds on and 10 seconds off, with temperature regulation still being enforced. During load shed level 2, the RIM will pull the heated seat control module inhibit signal circuit of the heated seat module to ground. In response to this signal, the heated seat modules will turn off the heated seats and deactivate temperature indicators. The instrument cluster will display a BATTERY SAVER ACTIVE message. The ON/OFF status of the heated seats is reported to the RIM through the heated seat control module status signal circuit by both heated seat modules.