摘要 |
Provided are: a vehicle configured such that if idling does not automatically stop, an in-vehicle display will occur immediately if a malfunction is the cause, thereby enabling a driver to have peace of mind and concentrate on driving, without giving the driver an unnecessary sense of unease; a vehicle diagnostic system therefor; and a vehicle diagnostic method. The vehicle (12) comprises an idle stop error display unit (112) provided corresponding to a specific ECU among a plurality of ECUs, and that indicates that an idle stop malfunction has occurred, being a malfunction corresponding to a second IS malfunction code, when a malfunction has occurred within a control target range for any among the plurality of ECUs, said malfunction recording the second IS malfunction code which does not cause the operation of a warning light requesting inspection or repair of an error that has occurred inside the vehicle (12). |