Launch X-431 User Manual page 51

LAUNCH
On-screen Buttons:
Freeze Frame: When an emission-related fault occurs, certain vehicle conditions are recorded by the on-
board computer. This information is referred to as freeze frame data. Freeze frame data includes a snapshot
of critical parameter values at the time the DTC is set. If it is illuminated, tap or click it to view the freeze
frame data.
Code Search: Tap or click it to search in the Google engine for more detailed information about the selected
DTC.
Report: Saves the current data in text format. All diagnostic reports can be accessed from "Reports" ->
"Health Report".
Note: Retrieving and using DTCs for troubleshooting vehicle operation is only one part of an overall diagnostic
strategy. Never replace a part based only on the DTC definition. Each DTC has a set of testing procedures,
instructions and flow charts that must be followed to confirm the location of the problem. This information can be
found in the vehicle's service manual.
C. Clear Fault Code
After reading the retrieved codes from the vehicle and certain repairs have been carried out, you can
use this function to erase the codes from the vehicle. Before performing this function, please be sure the
vehicle's ignition key is in the ON position with the engine off.
Clearing DTCs does not fix the problem(s) that caused the code(s) to be set. If proper repairs to correct
the problem that caused the code(s) to be set are not made, the code(s) will appear again and the check
engine light will illuminate as soon as the problem that cause the DTC to set manifests itself.
In Fig. L-13, tap or click "Clear Fault Code", a confirmation dialog box pops up on the screen. Tap or click
"Yes" and the system will automatically delete the currently existing trouble code.
Note: After clearing, you should retrieve trouble codes once more or turn ignition on and retrieve codes again.
If there are still some trouble codes in the system, please troubleshoot the code using a factory diagnosis guide,
then clear the code and recheck.
D. Read Data Stream
This option lets you view and capture (record) real-time Live Data. This data including current operating
status for parameters and/or sensor information can provide insight on overall vehicle performance. It can
also be used to guide vehicle repair.
Note: If you must drive the vehicle in order to perform a troubleshooting procedure, ALWAYS have a second
person help you. Trying to drive and operate the diagnostic tool at the same time is dangerous, and could cause a
serious traffic accident.
In Fig. L-13, tap or click "Read Data Stream", the system will display data stream items.
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Fig. L-14
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