3. Diagnostics Applications
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3.6.2. Functions Description
1. System Status
The System Status function allows you to view
system status of the vehicle being tested.
Figure 3.47: OBD II-System Status Screen
2. Read Codes
Reading Codes can be done with the key on
engine off (KOEO) or with the key on engine
running (KOER). This function allows you to
view the stored codes and pending codes detected.
The data can be saved to the SD card, or be
printed.
Figure 3.48: OBD II-Read Codes Screen
3. Erase Codes
The Erase Codes function allows you to delete
diagnostic trouble codes, Freeze Frame data and
manufacturer specific enhanced data from the
vehicle’s on-board computer, and resets the I/M
Readiness Monitor Status for all vehicle monitors
to Not Ready or Not Complete status.
This function is performed with key on engine off
(KOEO). Do not start the engine.
4. Live Data
The Live Data function allows you to view real
time PID data from ECU.
Live data can be displayed in four styles – text,
graph, graph merge, and analog gauge.
The data can be saved to the SD card, or be
printed.
Figure 3.49: OBD II-Live Data Screen
5. Freeze Frame
Freeze Frames function allows you to view data
stream “snapshots” automatically recorded by the
ECU that show actual data values at the time
when DTC(s) occurred.
The data can be saved to the SD card, or be
printed.
Figure 3.50: OBD II-Freeze Frame Screen
