Theory Of Operation

The Speed Control Switch Pod is a resistor multiplexed unit that provides hard wired inputs to the Body Control Module (BCM) microprocessor. The BCM relays the speed control switch inputs to the Powertrain Control Module (PCM) over the Controller Area Network (CAN) data bus. The speed control switch pod is located in the right spoke of the steering wheel. This switch has four push buttons and is used on all vehicles equipped with the speed control (also known as cruise control) system. The only visible components of the switch pod are the switch push buttons. The remainder of the switch pod including its mounting provisions and its electrical connection are concealed beneath the switch buttons within the steering wheel.