Equus 3150 - ABS/SRS + OBD2 Diagnostic Tool - Manual (Page 40)

Using the Code Reader
CODE RETRIEVAL PROCEDURE
38 OBD2
B.
MONITOR NOT RUN STATUS –
If the Code Reader’s LCD 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 Code Reader’s LCD 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.
„ Red LED – Indicates there is a
problem with one or more of the
vehicle’s systems. The red LED is
also used to indicate that DTC(s) are
present (displayed on the Code
Reader’s screen). In this case, the
Multifunction Indicator (Check
Engine) lamp on the vehicle’s
instrument panel will be illuminated.
On some vehicle models, the computer will store non-
emission related DTCs. These DTCs will not command the
MIL on since they are not emission related. If the Code
Reader retrieves one of these types of codes, the MIL will
not be commanded on, and the Yellow LED on the Code
Reader will be illuminated.
„ 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 Code Reader automatically
displays the code definitions for Generic DTC’s.
If the definition for the currently
displayed code is not available,
an advisory message shows
on the Code Reader’s LCD
display.
„ DTC’s that start with “P1” and some
“P3” are Manufacturer Specific codes
and their code definitions vary with
each vehicle manufacturer. When a
Manufacturer Specific DTC is re-
trieved, the LCD display shows a list
of vehicle manufacturers. Use the UP
and DOWN buttons, as ne-
cessary, to highlight the appropriate
manufacturer, then press the
ENTER/FF
button to display the
correct code definition for your vehicle.