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GM Enhanced (OBD II) Diagnostics
Record Data
Refer to "Record Data" on page 4-12 of Global OBDII Diagnostics. GM
groups the PIDs into four categories:
Analog: viewing of analog sensor signals, such as measured voltage
from O2 sensors, temperature sensors, and air flow sensors.
O2: viewing oxygen sensor information.
Misfire: viewing of cylinder misfire information.
Digital: viewing of switches, solenoids and relays.
Module: viewing of engine, transmission or transfer case information.
Some GM trucks manufactured in 1996 – 1998 have only one PID group.
For these vehicles, the selection menu does not appear.
Recorded Data from only one module can be kept per module. Switching
from Engine to Transmission will overwrite Group Recorded Data for the
selected group. Make sure to print data before selecting a different group
to record.
Vehicle Info
Refer to "Vehicle Info" on page 4-14 of Global OBDII Diagnostics.
Review Data
5
Refer to "Review Data" on page 4-18 of Global OBDII Diagnostics. The
following stored information can be reviewed for GM vehicles.
Playback
The Playback function s used to play back a recording. Playback is used to view
previously recorded PIDs.
To play back vehicle's recorded PIDs,
select Playback from the Print Data list
and press ENTER.
Select the recording you with to
Playback. ENG Analog means that you
made an Analog Group recording from
the Engine Module
Refer to Global OBDII Diagnostics for
additional information concerning
Playback.
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1) I/M Readiness
2) DTC (Codes)
3) Pending Codes
4) Freeze Frame
5) O2 Monitor Test
6) Diagnostic Monitor Tests
7) Vehicle Info
Print Data:
5}O2 Monitor Test
6)Diag Mon Test
` 7)Playback)
SELECT Pid Group
ENG Analog
` TRANS Digital
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