Theory Of Operation
WARNING: This page is about a different car, the 2020 Jeep Renegade. However, it is still accessible from the selected car via links, so may be relevant.
The Comfort Seat Wheel Module (CSWM) provides a variable Pulse Width Modulation (PWM) signal to the Heated Seat element in each seat cushion and seat back. The CSWM provides a power and return to a thermistor located in the seat cushion in order to monitor and regulate Heated Seat element function.