Intelligent toilet lid and control method thereof

The present invention may provide an intelligent toilet lid, comprising: at least one component group comprising a plurality of element components; and a control device that diagnoses whether or not the plurality of component components included in the at least one component group work normally on the basis of a diagnosis mode, the diagnosis mode comprises a conventional diagnosis mode for diagnosing whether the at least one component group normally operates or not when a user uses the diagnosis mode and an accurate diagnosis mode for diagnosing whether the at least one component group normally operates or not when the user does not use the diagnosis mode; a load input unit that applies a predetermined diagnostic electrical load to at least one diagnostic target component among the plurality of component components in the accurate diagnostic mode; and an output detection unit that detects an electrical output value output from the at least one diagnostic target component when the diagnostic electrical load is