OBD2 SCANNER CODE READER User’s Manual

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529 OBD II Scanner User’s Manual

5. Operations

5.1 Start 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 identies 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 tesng equipment and computers.

Now ve dierent types of protocols (ISO 9141, Keyword 2000, J1850 PWM, J1850

VPW and CAN) are in use by vehicle manufacturers.

Figure 5-1

Press [OK] to enter the Diagnostic Menu, the following screen will appear:

Figure 5-2

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User’s Manual - Page 31