When there are problems with the electrical system or mechanical components, it is important to investigate which component is faulty. It is also essential to determine the cause of the problem. Take, for example, a turbo that turns out to be defective. What caused the problem? Was it a lubrication issue?
If the cause of a fault is not found, the problem may recur in the future. Finding the defective or malfunctioning component and tracing the cause is what we call “making a diagnosis.” A good diagnosis prevents unnecessary replacement of parts. Automotive technicians are trained to make diagnoses. With the diagnostic skills they learn during these trainings, they can use the proper measuring equipment to track down an in-depth problem. The topics that may arise in the workshop are covered in the categories: electrical diagnosis, mechanical diagnosis, and air-conditioning system diagnosis.