VEHICLE

摘要

PROBLEM TO BE SOLVED: To suppress various controls executed on the basis of the temperature of engine coolant from malfunctioning in a vehicle equipped with a shutter device for regulating the temperature of the engine coolant by regulating a quantity of outdoor air introduced into a radiator.SOLUTION: A grille shutter 410 is a device for regulating a temperature of coolant of an engine 160 by regulating a quantity of outdoor air introduced into a radiator of the engine 160. An ECU 300 carries out a fault diagnosis of the engine 160 on the basis of the temperature of the coolant of the engine 160. The ECU 300 does not execute a fault diagnosis process on a thermostat valve 70 if the grille shutter 410 is opened and immovable despite an actuation command to the grille shutter 410.