Actron 9640A manual Field Service, SelectPlayback from the Review Data, Data on

GM Historic (OBD I) Diagnostics

SelectPlayback from the Review Data

screen and press

:

✓ If a recording does not exist in the tool memory, then the tool will display

a “NO RECORDING PRESENT” message. PerformRecord“

Data” on

page 5-4.

Select which list to playback. Refer to

“Viewing Data” on page 3-9 of Using

The Scan Tool for Entire or Custom

me

normal. The

arrows may be 1)Entireused scroll hrough all

Data Lists.

`2)CustomDataList

intervals in either direction.

The Playback screen has a Vehicle Data List header

ark he beginning of

the data list. The recorded PIDs are displayed next. Line 4 ispl ys the Frame

number and Time in seconds.

• Use the

arrow keys to

VehicleDataList

List.

UP/DOWN

scroll through the data line by line.

ReviewData

The end of the list is reached when

5

Field Service

arrowENTERicon is not visible.

ODESPRESENTYES

the

DOWN

1)DTC(Codes)

• The

arrow keys are

`2)Plyback

used to increase or decrease the

Frame/Time index. Time 0.0 is the

FRAME:

1Time: 4.4~

~

trigger point, when the user pressed

.

ime interv

l with a minus

sign (–) occurs before the trigger point.

• The tool recording time varies. A recording consi

ts

f 5 fr

s of data prior

to the trigger and several frames after the trigger. The numb r of PIDs

recorded will determine the number of frames.

✓ After

reaching the

last time interval

recorded. The

display

will

change from data recorded after trigger Playbackto data corded before.AsTh

✓

BACK

LEFT/RIGHT

FUNC

BACK

~

Some vehicles will wait 3 to 4 minutes aft r the driveabili y problem first

occurs before storing a trouble code in the vehic

’s on-bo

rd computer.

If you selected Trigger On Codes when you made your record ng, you

might not see any drastic change in data paramet

rs before and after the

trigger point. In cases like this, it is better to manually trigger the tart of

the recording when the driveability symptom s first observed.

To change the selections of Custom Data List param

ters, press the

key.

This will return to the Custom Data List selection display screens. When done,

press

to return to Review Data or

to r

turn to he GM Function

FieldServiceLEFT/RIGHTis a special diagnostic mode to monitor fuel system operation and

read DTCs. Some GM service manuals may refer to this mode as the Field Ser-

vice Mode Check. This mode works on vehicles equipped with a 12-pin ALDL

connector with a wire present in Pin-B, DiagnosticENTER

or Test Enable. The scan tool

enters this mode by grounding Pin-B: shorting Pin-B to Pin -A (ground).

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