Heated Seat System Operation
WARNING: This page is about a different car, the 2003 Dodge Intrepid, 2003 Chrysler Intrepid, 2003 Chrysler Concorde, and 2003 Chrysler 300M. However, it is still accessible from the selected car via links, so may be relevant.
The Memory Heated Seat/Mirror Module receives hard wired inputs from the heated seat switches and the heated seat sensors located, on each of the front seats. the programmed software in the MHSMM allows it to know the temperature of the seat by a resistance reading generated from the seat cushion element mounted thermistor (Heated Seat Temperature Sensor). when a heated seat switch is depressed the module will power the appropriate heating element until the correct preset temperature is achieved.