CODE RETRIEVAL PROCEDURE
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7
A PROTOCOL is a set of rules and procedures for regulating data
transmission between computers, and between testing
equipment and computers. As of this writing, five different types
of protocols (ISO 9141, Keyword 2000, J1850 PWM, J1850 VPW
and CAN) are in use by vehicle manufacturers.
n If the Scan Tool fails to link to the vehicle’s computer, a
“Communication Error” message shows.
- Ensure your vehicle is OBD2 compliant.
- Verify the connection at the DLC, and verify the ignition is ON.
- Turn the ignition OFF, wait 5 seconds, then back ON to reset
the computer.
- Choose Relink to try again, or, choose System Menu to return
to the System Menu.
n If the Scan Tool cannot link to the vehicle’s computer after three
attempts, the message “Contact Technical Support” displays.
- Choose System Menu to return to the System Menu.
- Turn the ignition off, and disconnect the Scan Tool.
- Contact Technical Support for
assistance.
7. If the Scan Tool can decode the Vehicle
Identification Number (VIN) for the
vehicle under test, the Confirm Vehicle
screen displays.
n If the information shown is correct for
the vehicle under test, choose Yes,
then proceed to step 10.
n If the information shown is not correct for the vehicle under test,
or if you wish to manually select the vehicle, choose No, then
proceed to step 9.
n If the Scan Tool cannot decode the Vehicle Identification Number
(VIN) for the vehicle under test, the Select Vehicle screen displays.
Proceed to step 8.
8. When No is selected from the Vehicle
information screen, the Select Vehicle
screen displays. The Select Vehicle
screen lists the three most recently
tested vehicles.
n To use a previously tested vehicle,
select the desired vehicle, then
press ENTER . Proceed to step
10.
n To select a new vehicle, choose New Vehicle. Proceed to step 9.
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