Using the Scan Tool
CODE RETRIEVAL PROCEDURE
3140d 37
- If the correct manufacturer is
shown, use the UP
and
DOWN
buttons, as necessary,
to highlight Yes, then press the
ENTER
button to continue.
- If the correct manufacturer is not shown, use the UP
and
DOWN
buttons, as necessary, to highlight No, then press
ENTER
button to return to the list of the vehicle
manufacturers.
If the manufacturer for your vehicle is not listed, use the UP
and DOWN
buttons, as necessary, to select Other
manufacturer and press the ENTER
button for additional
DTC information.
If the definition for the currently
displayed code is not available, an
advisory message shows on the
scan tool’s LCD display.
10. If more than one DTC was retrieved, and
to view Freeze Frame Data, press and
release the DTC/FF button, as necessary.
Each time the DTC/FF button is
pressed and released, the scan tool will scroll and display the
next DTC in sequence until all DTCs in its memory have
displayed.
Freeze Frame Data (if available) will display after DTC #1.
In OBD2 systems, when an
emissions-related engine malfunction
occurs that causes a DTC to set, a
record or snapshot of engine
conditions at the time that the
malfunction occurred is also saved in
the vehicle’s computer memory. The
record saved is called Freeze Frame
data. Saved engine conditions include,
but are not limited to: engine speed,
open or closed loop operation, fuel system commands, coolant
temperature, calculated load value, fuel pressure, vehicle speed, air
flow rate, and intake manifold pressure.
If more than one malfunction is present that causes more than
one DTC to be set, only the code with the highest priority will
contain Freeze Frame data. The code designated “01” on the
scan tool display is referred to as the PRIORITY code, and
Freeze Frame data always refers to this code. The priority
code is also the one that has commanded the MIL on.
Retrieved information can be uploaded to a Personal Computer
(PC) with the use of optional software (see instructions included
with the software for more information).
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