Diagnostics - Launch BST580D User Manual

LAUNCH
may produce some errors for test results. The tolerance results from the
resistance of connectors. The greater the resistance value is, the greater
the tolerance becomes. But generally, the tolerance does not affect the test
conclusion.

5.2 Diagnostics

After the scanner is properly connected to the vehicle's DLC, select [Diagnose]
in the Job Menu and press [OK]. The scanner will automatically start a check
of the vehicle's computer to determine which type of communication protocol it
is using. When the scanner identifies the computer's communication protocol,
a communication link is established and then the screen will display the
Monitor Status.
Note: A PROTOCOL is a set of rules and procedures for regulating data
transmission between computers, and between testing equipment and computers.
Now five different types of protocols (ISO 9141, Keyword 2000, J1850 PWM, J1850
VPW and CAN) are in use by vehicle manufacturers.
Press [OK] to enter the Diagnostic Menu, the following screen will appear:
BST580D User's Manual
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