Diagnose; Obdii/Eobd Diagnosing - Launch Creader 629 User Manual

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5. Diagnose

5.1 OBDII/EOBD Diagnosing

This option presents a quick way to check for DTCs, isolate the cause of the
illuminated Malfunction Indicator Lamp (MIL), check monitor status prior to
emissions certification testing, verify repairs, and perform a number of other
services that are emission-related.
After the tool is properly connected to the vehicle's DLC, select [OBD II] on the
main menu screen and press [OK]. The tool will automatically start a check
of the vehicle's computer to determine which type of communication protocol
it is using. When the tool 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], a screen similar to Figure 5-2 will appear:
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Figure 5-1
629 User's Manual
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