Read Live Data: that is to read the parameters of running engine,
such as oil pressure, temperature, engine speed, fuel oil
temperature, coolant temperature, intake air temperature, etc.
Based on these parameters, we can judge directly where the
problem lies, which helps to narrow the scope in maintenance. For
some vehicles, during their actual operation, the problems such as
performance characteristics offset, sensitivity reduction, can be
judged in live data.
Fig 4-8
In the process of diagnosis, if the device shows “System is OK”
or “No Trouble Code”, it means there is no related trouble code
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