Failure diagnosis system, and vehicle-mounted ECU for use in the failure diagnosis system
First Claim
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1. A failure diagnosis system that is applied to a vehicle, comprising:
- a VIN storage ECU that stores a vehicle identification number and diagnostic information; and
an other ECU that does not store the vehicle identification number but stores the diagnostic information, and which erases the diagnostic information,wherein the VIN storage ECU execute erasure of the diagnostic information stored in the VIN storage ECU in connection with execution of writing of the vehicle identification number in the VIN storage ECU and the other ECU executes erasure of the diagnostic information stored in the other ECU upon receiving a diagnostic information erasure request.
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Abstract
A failure diagnosis system that erases diagnostic information applied to a vehicle that includes an ECU for that stores a vehicle identification number (VIN) and diagnostic information (hereinafter, referred to as “VIN storage ECU”), and an ECU that does not store the vehicle identification number but stores the diagnostic information (hereinafter, referred to as “other ECU”) is characterized by being constructed so as to erase the diagnostic information stored in the VIN storage ECU and also erase the diagnostic information stored in the other ECU in connection with the writing of the vehicle identification number stored in the VIN storage ECU.
11 Citations
10 Claims
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1. A failure diagnosis system that is applied to a vehicle, comprising:
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a VIN storage ECU that stores a vehicle identification number and diagnostic information; and an other ECU that does not store the vehicle identification number but stores the diagnostic information, and which erases the diagnostic information, wherein the VIN storage ECU execute erasure of the diagnostic information stored in the VIN storage ECU in connection with execution of writing of the vehicle identification number in the VIN storage ECU and the other ECU executes erasure of the diagnostic information stored in the other ECU upon receiving a diagnostic information erasure request. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A vehicle-mounted ECU comprising:
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a storing portion that stores a vehicle identification number and a diagnostic information; a registering portion that, if a vehicle identification number write request is received, provisionally registers onto the storing portion the vehicle identification number relating to the write request; and a writing portion that, if a diagnostic information erasure request is received from a device, carries out writing of the vehicle identification number by definitively registering onto the storing portion the vehicle identification number provisionally registered, and that erases the diagnostic information presently stored.
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10. A vehicle-mounted ECU comprising:
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a storing portion that stores a vehicle identification number and diagnostic information; and a writing portion, if a vehicle identification number write request is received, carries out writing of the vehicle identification number onto the storing portion in accordance with the write request, and that erases the diagnostic information presently stored, and that requests an other ECU that does not store a vehicle identification number but stores diagnostic information to erase the diagnostic information presently stored.
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Specification