Anti-theft system for a vehicle ensuring anti-theft from unautho

Details Anti-theft system for a vehicle ensuring anti-theft from unautho Anti-theft system for a vehicle ensuring anti-theft from unautho

1996-08-14

1998-06-09

Elms, Richard T.

Electrical transmission or interconnection systems

Vehicle mounted systems

Automobile

180287, 3404255, B60R 2504

Patent

active

057639582

ABSTRACT:
An anti-theft system for a vehicle which monitors a state of a memory storing a check code so as to maintain a prohibition of operation of the vehicle when an abnormal state is detected in the memory. A control unit, provided in the vehicle, has a memory in which a first check code is recorded. A transmitting unit transmits a second check code to the control unit. The transmitting unit is separate from the control unit. Prohibition of operation of the vehicle is withdrawn when the first check code matches the second check code. The withdrawal of prohibition is prohibited when it is determined that the memory is not connected to the control unit. The withdrawal of prohibition may be prohibited when a first ID code stored in the memory does not match a second ID code stored in a second memory provided in the control unit.

REFERENCES:
patent: 4691202 (1987-09-01), Denne et al.
patent: 4835514 (1989-05-01), Masegi et al.
patent: 5561332 (1996-10-01), Udo et al.
patent: 5561420 (1996-10-01), Kleefeldt et al.
patent: 5610574 (1997-03-01), Mutoh et al.

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