VIEWING LIVE DATA
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The Scan Tool lets you view and/or record "real-time" Live Data. This
information includes values (volts, rpm, temperature, speed etc.) and
system status information (open loop, closed loop, fuel system status, etc.)
generated by the various vehicle sensors, switches and actuators. These
are the same signal values generated by the sensors, actuators, switches
and/or vehicle system status information used by the vehicle's computer
when calculating and conducting system adjustments and corrections.
The real time (Live Data) vehicle operating information (values/status)
that the computer supplies to the Scan Tool for each sensor, actuator,
switch, etc. is called Parameter Identification (PID) Data.
Each PID (sensor, actuator switch, status, etc.) has a set of operating
characteristics and features (parameters) that serve to identify it. The
Scan Tool displays this information for each sensor, actuator, switch or
status that is supported by the vehicle under test.
WARNING: If the vehicle must be driven in order to perform a
troubleshooting procedure, ALWAYS have a second person
help you. One person should drive the vehicle while the other
person observes the Scan Tool data. Trying to drive and
operate the Scan Tool at the same time is dangerous, and could
cause a serious traffic accident.
VIEWING LIVE DATA
1. While linked to the vehicle, start the engine, then press LD.
2. A “One moment please . . .” message displays while the Scan Tool
establishes communication with the vehicle.
n If the Scan Tool fails to establish communication with the vehicle,
a “Communication Error” message displays.
- Ensure the 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.
- Press ENTER to continue.
3. Real-time Live Data (PID) information
supported by the vehicle under test
displays.
n If Live Data is not supported by the
vehicle under test, an advisory
message displays. Choose Relink
to try again, or, choose System
Menu to return to the System Menu.
The values for the various PIDS displayed may change as the
vehicle's operating conditions change.
4. Only a limited amount of PID data can be displayed on the screen at
one time. If additional PID data is available, a small arrow is shown
on the display. Press UP and DOWN , as necessary, to view
all available PID data.
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