Commander 2WD V8-4.7L (2008)
Seat Heater Switch: Description and Operation
Operation
OPERATION
The heated seat switches receive battery current through a fused ignition switch output (run) circuit when the ignition switch is in the On position.
Depressing the heated seat switch provides a hard-wired resistor multiplexed signal to the Cabin Compartment Node (CCN). The CCN is responsible for
supplying the Controller Area Network (CAN) data bus message to the heated seat module, signaling the module to power the heated seat element of the
selected seat and maintain the temperature setting.
If the heated seat switch is depressed to a different position (Low or High) than the currently selected state, the CCN will go through the process again to
change the temperature setting. If a heated seat switch is depressed a second time to the same position as the currently selected state, the CCN and heated
seat module interprets the second input as a request to turn the seat heater OFF. The CCN will then signal the heated seat module to turn the heated seat
elements for that seat off.
