Innova 3100 Owner's Manual page 21

Green LED - Indicates that all engine systems are "OK" and
running normally. All monitors on the vehicle are active and are
performing their diagnostic testing, and no trouble codes are
present. A zero will show on Code Reader's LCD display for
further confirmation.
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 Code Reader's
LCD display for confirmation. A pending code is confirmed by
the presence of a numeric code and the word PENDING on
Code Reader's LCD display. If no pending code is shown, the
yellow LED indicates Monitor Status (see the following). See
DIAGNOSTIC TROUBLE CODES (DTCs) on page 35 for more
information about pending codes.
MONITOR STATUS - If Code Reader'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.
For more information on Monitors, see "OBD 2
Monitors" on page 38.
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 Code Reader's LCD display).
In this case, the Multifunction Indicator (Check Engine) lamp on
the vehicle's instrument panel will light steady on.
Code Reader will automatically re-link to the vehicle's
computer every 15 seconds to refresh the data being
retrieved. When data is being refreshed, a single beep
will sound, and "rEAd" will be shown on the LCD
display for 5 - 6 seconds. Code Reader will then beep
twice and return to displaying codes. This action
repeats as long as Code Reader is in communication
with the vehicle's computer.
Code Reader will display a code only if codes are
present in the vehicle's computer memory. If no codes
are present, a "0" will be displayed. Code Reader is
capable of retrieving and storing up to 32 codes in
memory, for immediate or later viewing.
OBD 2
Using Code Reader
CODE RETRIEVAL PROCEDURE
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