Electric Wiring System of a Motor Vehicle with an Authentication Apparatus
First Claim
1. An electric wiring system of a motor vehicle with several control devices that communicate with each other via a data bus, and with an immobilizer,whereinthe immobilizer comprises at least a first and a second control device from the plurality of control devices and an authentication apparatus,the plurality of control devices makes authentication information available,the authentication information of the plurality of control devices is supplied via the data bus to the authentication apparatus,the authentication apparatus checks whether the authentication information transmitted from the first and the second control device corresponds to authentication information expected for the first control device and the second control device, respectively, andthe authentication apparatus cancels the immobilizer of the vehicle when the authentication information transmitted from the first and the second control device corresponds to the authentication information expected for the first and second control devices.
1 Assignment
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Accused Products
Abstract
An electric wiring system of a motor vehicle with several control devices that communicate with each other via a data bus, and with an immobilizer is provided. In order to create an electric wiring system of a motor vehicle that includes an immobilizer with high reliability the immobilizer includes at least a first and a second control device from the plurality of control devices and an authentication apparatus, in particular an authentication control device. The authentication information of the plurality of control devices is supplied via the data bus to the authentication apparatus. The authentication cancels the immobilizer of the vehicle when the authentication information transmitted from the first and the second control device corresponds to the authentication information expected for the particular control devices.
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Citations
20 Claims
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1. An electric wiring system of a motor vehicle with several control devices that communicate with each other via a data bus, and with an immobilizer,
wherein the immobilizer comprises at least a first and a second control device from the plurality of control devices and an authentication apparatus, the plurality of control devices makes authentication information available, the authentication information of the plurality of control devices is supplied via the data bus to the authentication apparatus, the authentication apparatus checks whether the authentication information transmitted from the first and the second control device corresponds to authentication information expected for the first control device and the second control device, respectively, and the authentication apparatus cancels the immobilizer of the vehicle when the authentication information transmitted from the first and the second control device corresponds to the authentication information expected for the first and second control devices.
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10. A method for controlling an immobilizer of an electric wiring system of a motor vehicle, comprising the acts of:
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receiving authentication information from a plurality of control devices via a data bus; checking whether the authentication information received from a first control device and a second control device corresponds to authentication information expected for the first control device and the second control device, respectively; and canceling the immobilizer of the vehicle when the received authentication information corresponds to the expected authentication information. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification