Knowledge Acquisition for Fault Isolation Expert Systems

An electrical assembly testing device includes the capability of testing for specific components of interest. A sample component and the component of interest receive a test signal from a test signal generator. An output from each component in response to the test signal is utilized by a controller to determine a relationship between the outputs. The determined relationship between the outputs provides information regarding the component of interest so that the controller can make a determination whether the component is acceptable or whether it fails to meet selected criteria. In one example, a device designed according to this invention is particularly well suited for testing capacitors within wire harness assemblies.