Battery positive voltage (B+) is applied at all times to the heated seat control module from the LH HTD ST/BCM and the RH HTD ST fuses. The heated seat control module receives battery positive voltage from the BCM then through the heated seat switch. The heated seat control module receive ground from G301 and G302. The system operates only when the ignition is in the ACCY or RUN position. When you press the heated seat switch to the LOW position or the HI position, the heated seat control module heated seat switch input circuit will be activated. The heated seat control module then applies battery positive voltage (B+) to the heated seats. The heated seat control module monitors the seat surface temperature through a thermistor. The heated seat module maintains a pre-determined temperature. The heated seat relay module will set the heated seat temperature to high when pressed to the HI position. The heated seat control module determines between the heated seat HI/LOW input circuit based on the resistance values within the heated seat switch.