Scan Tools
The warning lights on the dashboard can be triggered by many varying problems.
Seeing a message on the dashboard like “Your left headlight needs attention”, leads drivers to believe that by simply plugging a computer tool into the car’s on board computer it will show the technician exactly what any problem is.
Nothing could be further from the truth.
Vehicle manufacturers use tables of trouble codes. These codes only indicate to the technician an area or condition that requires further investigation.
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Reading computer fault codes is only the start of the inspection procedure.
Sophisticated diagnostic work requires the aid of state of the art oscilloscopes coupled to specialised computer software.
The patterns that are presented on the oscilloscope screen give the technician the ability to see, nanosecond by nanosecond, the simultaneous interaction of multiple mechanical and electronic signals simultaneously in real time.
