Actron 9640 Manuel D’Utilisation

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 GM Historic (OBD I) Diagnostics
5
Playback
The Playback function is used to playback a Record Data recording. This 
function is very similar to View Data. The only difference is that View Data is 
a real time viewing of PIDs, while Playback is a viewing of previously recorded 
PIDs.
Select Playback from the Review Data 
screen and press 
ENTER:
If a recording does not exist in the tool memory, then the tool will display
Select which list to playback. Refer to 
The Scan Tool for Entire or Custom 
Data Lists.
The Playback screen has a Vehicle 
Data List header to mark the beginning of the data list. The recorded PIDs are 
displayed next. Line 4 displays the Frame number and Time in seconds.
• Use  the 
UP/DOWN arrow keys to 
scroll through the data line by line. 
The end of the list is reached when 
the 
DOWN arrow icon is not visible. 
• The 
LEFT/RIGHT arrow keys are 
used to increase or decrease the 
Frame/Time index. Time 0.0 is the 
trigger point, when the user pressed 
ENTER. A time interval with a minus 
sign (–) occurs before the trigger point.
• The tool recording time varies. A recording consists of 5 frames of data prior 
to the trigger and several frames after the trigger. The number of PIDs 
recorded will determine the number of frames.
 
After reaching the last time interval recorded. The Time display will
change from data recorded after trigger to data recorded before. This is
normal. The 
LEFT/RIGHT arrows may be used to scroll through all time
intervals in either direction. 
Some vehicles will wait 3 to 4 minutes after the driveability problem first
occurs before storing a trouble code in the vehicle’s on-board computer.
If you selected Trigger On Codes when you made your recording, you
might not see any drastic change in data parameters before and after the
trigger point. In cases like this, it is better to manually trigger the start of
the recording when the driveability symptom is first observed.
To change the selections of Custom Data List parameters, press the
BACK key. This will return to the Custom Data List selection display
screens. When done, press 
BACK to return to Review Data or FUNC to
return to the GM Function List.
Review Data
?
1)DTC (Codes) 
` 2)Playback
  
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Playback Data As
?
1)Entire Data List
` 2)Custom Data List
  
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Vehicle Data List  ?
CODES PRESENT  YES
CALC LOAD(%)
7.0[ 
FRAME: 1 Time: 4.4
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