User Manual

Using the Scan Tool
CODE RETRIEVAL PROCEDURE
36 3040e
 DTC’s that start with “P0”, “P2” and some “P3” are
considered Generic (Universal). All Generic DTC definitions
are the same on all OBD2 equipped vehicles. The Scan Tool
automatically displays the code definitions (if available) for
Generic DTC’s.
 DTC’s that start with “P1” and some “P3” are Manufacturer
specific codes and their code definitions vary with each vehicle
manufacturer.
13. 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 emis-
sions-related engine malfunction oc-
curs that causes a DTC to set, a re-
cord 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).
14. When the last retrieved DTC has been displayed and the DTC/FF
button is pressed, the screen returns to the first retrieved DTCs.
15. Determine engine system(s) condition by viewing the Scan Tool’s
display for any retrieved Diagnostic Trouble Codes, code definitions,
Freeze Frame data and Live Data, interpreting the green, yellow and
red LEDs.
 If DTC’s were retrieved and you are going to perform the repairs
yourself, proceed by consulting the Vehicle’s Service Repair
Manual for testing instructions, testing procedures, and flow
charts related to retrieved code(s).