Heated Seats

HEATED SEATS DESCRIPTION AND OPERATION

HEATED SEAT SYSTEM COMPONENTS
The heated seat system consists of the following components:
- Driver heated seat control module
- Driver heated seat switch
- Driver seat back heater element
- Driver seat cushion heater element
- Passenger heated seat control module
- Passenger heated seat switch
- Passenger seat back heater element
- Passenger seat cushion heater element
- LH HTD ST/BCM 15A fuse
- RH HTD SEAT 15A fuse

HEATED SEAT SYSTEM CONTROLS
The heated seat system is controlled by the following components:
- Body control module
- Driver heated seat control module
- Driver heated seat switch
- Passenger heated seat control module
- Passenger heated seat switch

HEATED SEAT SYSTEM DESCRIPTION
The heated seat control module controls the battery positive voltage used to supply the seat heater elements. Voltage is supplied to the heated seat switch from the body control module. When the heated seat switch is in the high or low position voltage is supplied through the on switch signal circuit to the heated seat control module. Voltage to the high/low switch signal circuit is reduced by the resistors within the heated seat switch, high or low seat heater operation is determined by the voltage level to the heated seat control module. The heated seat control module uses the resistance through the heated seat thermistor to regulate the seat temperature. When the heated seat reaches the maximum temperature for high or low operating modes the battery positive voltage supply to the seat heater elements is removed. When the seat cools the resistance value through the heated seat thermistor returns to the limits set for high or low heated seat operation and the heated seat control module provides the battery positive voltage supply to the heated seat element supply circuit.

The body control module controls the voltage supply circuit to the heated seat switch for the purpose of load management control. The load management control feature allows the body control module to reduce the load on the vehicles charging system when inputs to the powertrain control module indicate the demand is greater than the generator is able to supply.