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Additional Tests
VIEWING FREEZE FRAME DATA - SPECIAL TEST MENU
106 3120d
In addition to retrieving Diagnostic Trouble Codes (DTCs), you can use the
Diagnostic Tool to perform additional diagnostic tests, to view diagnostic and
vehicle information stored in your vehicle's on-board computer, and to
configure the Diagnostic Tool for your particular needs.
VIEWING FREEZE FRAME DATA
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.
1. While linked to the vehicle, press and release the FF button.
„ The Freeze Frame screen displays.
„
Saved engine conditions include but
are not limited to: engine speed,
open or closed loop operation, fuel
system commands, coolant tem-
perature, 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 Diagnostic Tool’s 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.
„
Use the UP and DOWN
buttons, as necessary, to view all
available Freeze Frame data.
If Freeze Frame data is not
presently stored in the vehi-
cle’s computer, an advisory
message displays. Press the M
button to return to the OBD2
DTC screen.
2. When finished, press and release the M button to return to the Main
Menu screen.
SPECIAL TEST MENU
Additional tests are accessed through the “Special Test Menu.” The
following functions are available from the "Special Test Menu:"
„ O2 Sensor Test - Retrieves and displays O2 sensor monitor test
results from your vehicle's on-board computer.