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LAUNCH
42
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Notes:
• A plasc DLC cover may be found for some vehicles and you need to remove it
before plugging the diagnosc cable.
• The cable connector is keyed and will only t one way. If you have problems
connecng the cable connector to the DLC, rotate the connector 180
o
and try
again.
4). Turn the ignition on. Engine can be o or running.
CAUTION: Don’t connect or disconnect any test equipment with the ignion
on or engine running.
5). The system automatically turns on and navigates to the main menu screen.
6.2 Start OBD Diagnostics
After the tool is properly connected to the vehicle’s DLC, select 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 identies 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 tesng equipment and computers.
Now ve dierent types of protocols (ISO 9141, Keyword 2000, J1850 PWM, J1850
VPW and CAN) are in use by vehicle manufacturers.
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