Fault diagnostic apparatus for detecting faults in electronic control system for motor vehicle has analyzer which detects presence of communication in elements

摘要

The apparatus includes an input unit for receiving communication signal information from bus communication lines, and a signal analyzer for analyzing the received signals. The analyzer detects a faulty part in order to determine a possibly faulty region in the communication system, based on the presence of communication through elements allocated to the electronic control device. Independent claims are also included for: (a) a fault diagnostic apparatus (b) a fault diagnostic method