Seatbelt Not Fastened

The seatbelt-not-fastened alarm sounds at a rate of 50 tones per minute when the following conditions are true:
^ The ignition switch turned from off to on.
^ The seatbelt switch indicates that the seat belt is not fastened
^ A 6-second seatbelt chime timer has not expired

The alarm deactivates when any one of the above conditions changes.