Patent ID: 6502021
Filing Date: 2002-12-31
Classification: B60W

Abstract:
A vehicle control apparatus having a diagnosis function comprising:detection means for detecting a predetermined diagnosis item as normal or abnormal during a trip period of a vehicle as a running period from a point in which an ignition switch is turned on to a point in which the ignition switch is turned off; determination status decision means for deciding a determination status indicating the result of diagnosis of the diagnostic item, based on the result of detection by the detection means; storage means for storing the determination status decided by the determination status decision means; and output control means for performing output control in accordance with the result of diagnosis, based on the determination status decided by the determination status decision means, wherein the determination status decision means decides the determination status by performing status transition processing to change a determination status during a previous trip period stored in the storage means to a new determination status when necessary, characterized in that the determination status is stored into the storage means, as a numerical value set in correspondence with each determination status while avoiding mutual numerical overlap.