Patent Document ID: 8290893
Application ID: 12549112
Patent Flag: 1

Claim One:
1. A failure diagnosis system comprising: a causal relationship information storage unit configured to store causal relationship information representing a causal relationship between events regarding a diagnosis-target apparatus, the causal relationship information including: common causal relationship information that is commonly used in a plurality of types of failure diagnosis regarding the diagnosis-target apparatus; and specific causal relationship information that is used in each specific type of failure diagnosis among the plurality of types of failure diagnosis; a diagnosis execution unit configured to selectively execute the plural types of failure diagnosis by using a combined causal relationship information that is a combination of the common causal relationship information and a piece of the specific causal relationship information corresponding to a diagnosis-target type of failure diagnosis; an update information storage unit configured to store update information for updating the specific causal relationship information; and an update unit configured to selectively update the specific causal relationship information by using the update information.