Vehicle diagnostic system capable of easily acquiring data IDs for vehicle diagnosis
First Claim
1. A system for diagnosing a malfunction concerning states of a vehicle in which an electronic control apparatus controlling the drive states is mounted and adapted to detect the malfunction and store therein data showing the malfunction, the system comprisinga reference table in which a plurality of retrieval codes to which an operator has access and ID (identification) information identifying, among the data stored in the electronic control apparatus, data relating to contents shown by each of the retrieval codes are stored in advance, the retrieval codes expressing the malfunction concerning the states of the vehicle;
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communicating with the electronic control apparatus to acquire data specified by the retrieved ID information from the electronic control apparatus.
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Accused Products
Abstract
A vehicle diagnostic system is provided for readily specifying a malfunctioning portion of a vehicle. An on-vehicle electronic control unit (ECU) stores data ID retrieval tables consisting of a plurality of retrieval codes which are classified into three, i.e. function IDs indicative of function, forced driving IDs for allowing the ECU to forcedly drive an object to be controlled, and diagnostic codes indicative of types of malfunction. In the tables, data IDs are recorded being correlated to the retrieval codes. A diagnostic tool provided outside the vehicle transmits an inputted retrieval code to the ECU, which then searches through the tables to retrieve a data ID corresponding to the code for transmission to the diagnostic tool. The diagnostic tool then transmits the data ID to the ECU as a data demand. In response, the ECU transmits a data corresponding to the data ID for display on the diagnostic tool.
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Citations
25 Claims
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1. A system for diagnosing a malfunction concerning states of a vehicle in which an electronic control apparatus controlling the drive states is mounted and adapted to detect the malfunction and store therein data showing the malfunction, the system comprising
a reference table in which a plurality of retrieval codes to which an operator has access and ID (identification) information identifying, among the data stored in the electronic control apparatus, data relating to contents shown by each of the retrieval codes are stored in advance, the retrieval codes expressing the malfunction concerning the states of the vehicle; - and
a malfunction diagnostic apparatus being communicable with the electronic control apparatus, retrieving from the reference table ID information corresponding to a retrieval code to be commanded; and
communicating with the electronic control apparatus to acquire data specified by the retrieved ID information from the electronic control apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 25)
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24. A method of diagnosing a malfunction concerning states of a vehicle in which an electronic control apparatus controlling the drive states is mounted and adapted to detect the malfunction and store therein data showing the malfunction, comprising the steps of:
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retrieving, from a reference table in which a plurality of retrieval codes to which an operator has access and ID (identification) information identifying, among the data stored in the electronic control apparatus, data relating to contents shown by each of the retrieval codes are stored in advance and the retrieval codes expressing the malfunction concerning the states of the vehicle, ID information corresponding to a retrieval code to be commanded; and communicating with the electronic control apparatus to acquire data specified by the retrieved ID information from the electronic control apparatus.
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Specification