1. Tell whether the diagnostic & programming tool can send out
communication signal.
After connecting the diagnostic & programming tool to the OBD2 port
of GT100, select the car model and function to be performed. Then
you will see on GT100 the protocol indicator light will turn on or flash
(because the diagnostic & programming tool will send out the
communication signal), if the indicator won't turn on, it indicates that
the diagnostic & programming tool has a incorrect connection or the
machine is damaged.