Heated Steering Wheel Switch - Operation

OPERATION

The heated steering wheel switch allows the driver to turn on and off the heated steering wheel system. The heated steering wheel system will remain off until the driver presses the heated steering wheel switch. Once the switch is pressed, the Light Emitting Diode (LED) on the face of the switch will illuminate, indicating that the heating element in the steering wheel is operating. Pressing the switch while the heated steering wheel is on, will turn off the heated steering wheel system and the LED in the switch.

Pressing the heated steering wheel switch provides a resistive signal over a hard-wired circuits to the Cabin Compartment Node (CCN). The CCN sends a request signal over the Controller Area Network (CAN) data bus to the Heated Seat Module (HSM), signaling the HSM to power the heating element for the steering wheel.

The heated steering wheel switch also functions as a visual indicator for a fault with the heated steering wheel system. When the heated steering wheel switch is pressed and a fault is present in the heated steering wheel system, the LED on the switch will illuminate for two seconds and then immediately turn off.

The heated steering wheel switch is diagnosed using a scan tool Testing and Inspection and Testing and Inspection.

The heated steering wheel switch cannot be adjusted or repaired and the entire switch pod assembly must be replaced if inoperative or damaged .