Using the scan tool, 28 obd2 – Equus 3040 - OBD2 ScanTool User Manual
Page 30
Using the Scan Tool
CODE RETRIEVAL PROCEDURE
28 OBD2
Yellow LED
- Indicates one of the following conditions:
PENDING CODE PRESENT - If the
yellow LED is lit, it may indicate the
existence of a pending code. Check
the Scan Tool’s LCD display for
confirmation. A pending code is
confirmed by the presence of a
numeric code and the word PENDING
on the Scan Tool’s LCD display.
MONITOR STATUS - If the Scan
Tool’s LCD display shows a zero
(indicating there are no DTCs present
in the vehicle's computer), but the
yellow LED is lit, it indicates a "Monitor
Has Not Run" status. This means that
some of the Monitors on the vehicle
have not yet finished their diagnostic
self-testing. This condition is confirmed
by one or more blinking Monitor icons
on the LCD display. A blinking Monitor
icon means the Monitor has not yet run
and finished its diagnostic self-testing.
All Monitor icons that are solid have
completed their diagnostic self-testing.
Red LED
- Indicates there is a
problem with one or more of the
vehicle's systems. The red LED is also
used to show that DTC(s) are present
(displayed 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.
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. When a
Manufacturer specific DTC is retrieved,
the LCD display shows a list of vehicle
manufacturers. Use the DOWN
button, as necessary, to highlight the appropriate manufacturer,
then press the LD/ENTER
button to display the correct code
definition for your vehicle. A confirmation message shows on the
Scan Tool’s display.