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GM Historic (OBD I) Diagnostics
5
Record Data
The Record Data function records vehicle PIDs (Parameter Identification Data)
while the vehicle is parked or being driven. This function is mainly used for
diagnosing intermittent driveability problems that cannot be isolated by any
other method. The tool records data based on time (5 frames prior to the start
of the recording, and for a duration after). The time after depends on the vehicle
data rate. The Record Data function allows diagnosis of an intermittent
problem by analyzing data leading up to the problem, during the problem, and
possibly after the problem, depending on duration.
Select Record Data from the GM
Function List and press
ENTER
.
Follow all instructions on the display.
✓ The tool can maintain only one
recording at a time. Be sure to
thoroughly review the old recording before erasing it.
Never operate the tool while driving. Have another person
assist with the operation of the tool.
✓ This function can be performed with the ignition key On-Engine Off or
Running.
If a recording currently exists in
memory, a message to Erase Old
Recording is displayed. The tool stores
only one recording at a time, so be sure
to review it before erasing it.
Multiple Group Vehicles
Some vehicles display a Select Group screen for recording data. In these
cases, only one group of data can be recorded at a time. Recording another
group of data overwrites the present one.
In the next screen, select a method to
trigger a recording. Manual Trigger will
begin recording when the
ENTER
key
pressed. Trigger On Codes will begin
recording when a DTC is stored in the
PCM.
Select a method and press
ENTER
. The tool will establish a communication link
with the PCM.
GM Function List ?
` 4)Record Data ]
5)Review Data [
6)Field Service ~
!
WARNING
!
WARNING
Cannot Record. Old
Recording Filled Up
Memory. Erase Old?
<YES> NO ~
Pick Trigger Method
` 1)Manual Trigger
2)Trigger On Codes
~