Importance

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Abstract

During analysis, sensors are connected to portions of an engine and thereabout and a starter driven by an auxiliary battery incorporated in a system. An engine of a motor car and electrical systems thereabout are automatically diagnosed by use of a computer to discriminate the good or bad condition thereof, whereby the results of diagnosis are outputted as a print out and a fault point or points is indicated by an indicating device. The indicating device successively shows in graphic display the contents of working performed by a worker in the predetermined order of working. Additionally, an engine drive control section automatically sets the analyzer in one of modes including an engine stopped mode, a cranking driven mode, an idling operation mode and the like in accordance with point or points of diagnosis of the vehicle being diagnosed.

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First Claim