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John L Kastura, William R Stewart: Motor vehicle diagnostic and monitoring device having keep alive memory. General Motors Corporation, Howard N Conkey, June 2, 1981: US04271402 (86 worldwide citation)

A diagnostic and warning system for a motor vehicle monitors the condition of a number of preselected parameters. When the condition of the parameters is representative of a fault condition, the system energizes a malfunction light in the vehicle compartment during the period of the detected fault. ...


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Kastura John L, Stewart William R: Dispositif de diagnostic et de controle pour vehicule automobile avec memoire remanente, Motor vehicle diagnostic and monitoring device having keep alive memory. General Motors Corporation, GOWLING LAFLEUR HENDERSON, February 1, 1983: CA1140647

C-3139 MOTOR VEHICLE DIAGNOSTIC AND MONITORING DEVICE HAVING KEEP ALIVE MEMORY Abstract of the Disclosure: A diagnostic and warning system for a motorvehicle monitors the condition of a number of pre-selected parameters. When the condition of theparameters is representative of a fault condition,the ...