WHAT AREAS OF THE CAR CAN BE TESTED?
Diagnostic tests can reveal problems within a car’s engine, transmission, exhaust system, brakes, and other major components, as well as performance issues with the fuel injector, air flow and coolant, ignition coils, and throttle.
A common misconception about car diagnostic tests is that technicians can use code-reading tools to determine the exact problem that triggered the check engine light. In reality, the code tells technicians which engine or component parameters are out of range, but it does not detail the cause of the problems.
That’s where experience comes in, as the technician uses experience and expertise to diagnose any underlying problems.
Before vehicle diagnostic tests, identifying problems was time-consuming and expensive, car owners only brought their cars to mechanics after a breakdown or other severe malfunction. Now, computerised car components can detect problems long before they cause a breakdown.