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About the Scan Tool
DISPLAY FUNCTIONS
3
5. M (Menu) button – When pressed, displays the Main Menu.
6. LD button – When pressed while linked to a vehicle, places the
Scan Tool in Live Data mode.
7. UP button – When in MENU mode, scrolls UP through the
menu options. When LINKED to a vehicle, scrolls UP through the
current display screen to display any additional data.
8. ENTER button - When in Menu mode, confirms the selected
option or value.
9. DOWN button - When in MENU mode, scrolls down through the
menu options.
When LINKED to a vehicle, scrolls down through the
current display screen to display any additional data.
10. GREEN LED - Indicates that all engine systems are running
normally (all Monitors on the vehicle are active and performing
their
diag
nostic testing, and no DTCs
are present).
11. YELLOW LED - Indicates there is a possible problem. A “Pending”
DTC is present and/or some of the vehicle's emission monitors have
not run their diagnostic testin
g.
12. RED LED - Indicates there is a problem in one or more of the
vehicle's systems. The red LED is also used to show that DTC(s)
are present. DTCs are shown on the Scan Tool’s LCD display. In
this case, the Malfunction Indicator (“Check Engine”) lamp
on the
vehicle's instrument panel will light steady on.
13. Display - Displays test results, Scan Tool functions and Monitor status
information. See DISPLAY FUNCTIONS, below, for details.
14. CABLE - Connects the Scan Tool to the vehicle's Data Link Connecto
r
(DLC).
DISPLAY FUNCTIONS
Figure 2. Display Functions
See Figure 2 for the locations of items 1 through 15, below.
1. I/M MONITOR STATUS field - Identifies the I/M Monitor status area.
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3
2
5
7
6
114
10
11
12
8
9
13
15
CODE RETRIEVAL PROCEDURE
Using the Scan Tool
CODE RETRIEVAL PROCEDURE
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11. Refer to DISPLAY FUNCTIONS on page 3 for a description of
display elements.
In the case of long code definitions,
a small arrow is shown in the
upper/lower right-hand corner of the
Scan Tool display area to indicate
the presence of additional
information.
If a definition for the currently
displayed code is not available,
an advisory message shows.
12. Read and interpret Diagnostic Trouble Codes/system condition
using the display and the green, yellow and red LEDs.
The green, yellow and red LEDs are used (with the display) as
visual aids to make it easier to determine engine system
conditions.
Green LED – Indicates that all
engine systems are “OK” and
operating normally. All monitors
supported by the vehicle have run
and performed their diagnostic
testing, and no trouble codes are
present. All Monitor icons will be
solid.
Yellow LED – Indicates one of the
following conditions:
A. A PENDING CODE IS PRESENT –
If the yellow LED is illuminated, it
may indicate a Pending code is
present. Check the display for
confirmation. A Pending code is
confirmed by the presence of a
numeric code and the word
PENDING.
B. MONITOR NOT RUN STATUS – If
the display shows a zero (indicating
there are no DTC’s present in the
vehicle’s computer memory), but
the yellow LED is illuminated, it may
be an indication that some of the
Monitors supported by the vehicle
have not yet run and completed
their diagnostic testing. Check the
display for confirmation. All Monitor
icons that are blinking have not yet
run and completed their diagnostic
testing; all Monitor icons that are
solid have run and completed their
diagnostic testing.
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