Vehicle diagnostic system, vehicle diagnostic method, and external diagnostic device

In a vehicle diagnostic system and a vehicle diagnostic method, malfunction codes recorded in each ECU in a vehicle include idle stop malfunction codes that disallow idle stop, and a non-idle stop malfunction code that does not disallow idle stop. The idle stop malfunction codes include: a first idl...

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Bibliographische Detailangaben
Hauptverfasser:	DOI KATSUHISA, ENDO WATARU, KAWAHARA NAOKI, YAGI KENSUKE
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDEDFOR ELSEWHERE BLASTING CHECKING-DEVICES COMBUSTION ENGINES GENERATING RANDOM NUMBERS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING PHYSICS REGISTERING OR INDICATING THE WORKING OF MACHINES STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDEDFOR STARTING OF COMBUSTION ENGINES TIME OR ATTENDANCE REGISTERS VOTING OR LOTTERY APPARATUS WEAPONS
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Beschreibung
Zusammenfassung:	In a vehicle diagnostic system and a vehicle diagnostic method, malfunction codes recorded in each ECU in a vehicle include idle stop malfunction codes that disallow idle stop, and a non-idle stop malfunction code that does not disallow idle stop. The idle stop malfunction codes include: a first idle stop malfunction code that operates a warning light provided corresponding to a specific ECU; and a second idle stop malfunction code that does not operate the relevant warning light. An external diagnostic device extracts, from the plurality of ECUs, only the second idle stop malfunction codes, among the first idle stop malfunction codes and the second idle stop malfunction codes, when performing malfunction diagnosis for non-execution of idle stop.