Chongqing Changan Automobile Co., Ltd.

Peng Liang

Fenghua Liang

Jugang He

A vehicle central lock antitheft method and system includes a central lock system which is connected by radio with a remote controller for identity verification using rolling codes (S, S), wherein the central lock system chooses a security state (S) and transmits the security state to an engine management system according to the verification result, the ignition IG status and the door switch status signal indicating opening or closing of the door (S). The engine management system receives the security state transmitted by the central lock system and verifies the identity of the central lock system by code matching (S); security identification between the engine management system and the central lock system is carried out by bidirectional encryption communication (S). The engine management system then decides whether or not to lock the engine according to the result of the security identification.

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Chongqing, China

Peng Liang