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GM Historic (OBD I) Diagnostics
5
Select a method and press . The tool will establish a communication link
with the PCM.
If
Manual Trigger
is selected, press
to begin recording.
Trigger On
Codes
will not show this screen.
The function runs automatically and
stops when the tool’s memory is filled.
When done, the tool prompts you to “PLAY THE RECORDING?” Select
YES
to review the data now or
NO
to review it later using the next function ,
Review
Data
.
Review Data
The
Review Data
function allows you to review recorded data stored in the tool
such as Diagnostic Trouble Codes (DTCs) and playback recorded data.
Select
Review Data
from the
GM Function List
and press .
DTC (Codes)
The
DTC (Codes)
function is used to review DTCs stored in the tools memory
after performing the
Read Codes
.
Select
DTC (Codes)
from the
Review
Data
screen and press .
Codes will be noted as History or Cur-
rent. Use arrow keys if more
than one DTC exists. Press to
return to Review Data or to
return to the GM Function List.
Playback
The
Playback
function is used to playback a
Record Data
recording. This func-
tion 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.