An original size detecting apparatus is capable of carrying out accurate original size detection without erroneous detection of the size of an original due to the influence of external scattered light. The method includes receiving message traffic from network and determining information that indicates contents of each message in the kernel. When the first component is an actuator, it processes data relating to control of the second component and generates and wirelessly transmits signals to the second component to control the system, subsystem or other component of the vehicle.