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8.After a few seconds, the screen will change to: wait the Scan Tool will retrieve and display any Diagnostic Trouble Codes, Freeze Frame data Live Data....from the vehicles computer memory.
9.If the Scan tool fails to link up with the vehicle’s ECU, it will show
a message as displayed on the LCD screen:
Reason：
1． DLC isn’t linked properly.
2． The KEY of the vehicle isn’t swithed on.
3． The vehicle’s communication protocol is not conform with international standards.
10．Press 
or 
button.