Vehicle anti-theft system
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsSusumu Maeda, Eiji Mutoh, Shinichi Kubota
Life of this patent
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Abstract
Ribs 9'a to 9'd provided in a connector 50b on the terminal device side are coincident with grooves 8'a to 8'd provided in a connector 40b on the ECU 30b side, but are not coincident with grooves 8a to 8d provided in a connector 40a in position, size and shape. Even if the connector 40b of the ECU 30b without the immobilizer CPU 13 is attempted to be engaged the connector 50a which should originally be connected to the ECU 30a with the immobilizer CPU 13, it cannot be engaged or right electrical connections between input/output terminals in the ECU 30a and corresponding terminal devices cannot be achieved. Accordingly, the theft of the vehicle by replacing the ECU 30a with the ECU 30b is prevented.
Claims10
In a vehicle control system comprising either a first type of engine control device which includes an anti-theft algorithm or a second type of engine control device containing no anti-theft algorithm, said system including a terminal device which exhibits a function necessary for engine control when said terminal device is electrically connected to either of said first and second types of engine control devices;
- the improvement comprising separable electrical connecting means for normally connecting said first type of engine control device to said terminal device,
- said connecting means being so arranged that it cannot normally connect said second type of engine control device to said terminal device.
Dependencies are inferred from the claim text.