Patent ID: 7552952

Claim:
A system for detecting at least an open state of an opening of a door of a motor vehicle and two other states of a lock of this opening, called a first state and a second state, comprising: a first switching device associated with the opening of the door and the lock comprising a first contact breaker with a normally open or normally closed position, wherein the first switching device is configured to detect at least the open state of the door, wherein the first contact breaker detects the first state of the lock and is connected to a first information cable; a second switching device associated with the opening of the door and the lock comprising a second contact breaker with a normally open or normally closed position, wherein the second contact breaker is configured to detect both the first and second state of the lock and is connected to a second information cable, wherein the first state detected by the second contact breaker is common with the first state detected by the first contact breaker, wherein the first and second information cables and the ground cable are connected to analysis means.