Equus 3040 - OBD2 ScanTool - Manual (Page 31)

Using the Scan Tool
CODE RETRIEVAL PROCEDURE
OBD2 29
- If the correct manufacturer is
shown, press the LD/ENTER
button to continue.
- If the correct manufacturer is not
shown, press the DTC/FF
button to return to the list of vehicle
manufacturers.
If the manufacturer for your vehicle is not listed, use the DOWN
button, as necessary, to select Other manufacturer and
press the LD/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 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 the optional “PC Link” softare.
(see instructions included with PC-Link program for more
information).
11.
When the last retrieved DTC has been displayed and the DTC/FF
button is pressed, the screen returns to the first retrieved DTCs.