What does the traditional fault diagnosis method not include?

Expert system. Traditional fault diagnosis methods do not include expert system. Traditional automobile fault diagnosis is based on manual experience inspection, so fault diagnosis mainly depends on manual observation, reasoning analysis and logical judgment, and it is often combined with disassembly work for maintenance, and the repair of parts is emphasized during maintenance. Although some instruments and equipment are also used for testing, this method is obviously unscientific for modern cars, especially for a car with thousands of parts and complex electronic circuits. Modern automobile fault diagnosis makes full use of the characteristics of electronic control technology, and makes scientific and accurate diagnosis of automobile faults through high-tech instruments and equipment, thus greatly improving the speed and reliability of automobile maintenance.