Heated Seat Operation
The passenger seat block diagram is identical to the driver seat.
| Callout | Component Name |
|---|---|
| A20 | A20 Radio/HVAC Controls |
| K29 | K29 Seat Heating Control Module |
| E14C | E14C Seat Heating Element - Passenger Back |
| E14D | E14D Seat Heating Element - Passenger Cushion |
| E14A | E14A Seat Heating Element - Driver Back |
| E14B | E14B Seat Heating Element - Driver Cushion |
| K40 | K40 Seat Memory Control Module |
The driver and passenger heated seats are controlled by separate heated seat switches that are located in the HVAC controls. When a heated seat switch is pressed, a serial data message is sent from the HVAC controls to the HVAC control module indicating the heated seat command. The HVAC control module serves as a gateway to transmit the message to the seat memory control module/seat heating control module via the serial data line. In response to this message, the seat memory control module/seat heating control module applies battery voltage through the element supply voltage circuit of the seat heating elements. The seat memory control module/seat heating control module sends a serial data message back to the HVAC control module to gateway the information to the HVAC controls to either illuminate or turn off the appropriate temperature indicator.