Autel AutoLink AL319 Manual page 35

"OK"
has completed its diagnostic testing.
"INC"
has not completed its diagnostic testing.
"N/A"
The green, yellow and red LEDs provide a quick way to help you
determine if a vehicle is ready for an Emission Test.
The LED and audio tone indications are interpreted as below:
LED Interpretation
GREEN LED – Indicates that engine systems are "OK" and
1)
operating normally (the number of Monitors supported by the
vehicle which have run and performed their self-diagnostic
testing is in the allowed limit. MIL is off. ).There is no stored
and pending DTCs. The vehicle is ready for an Emission Test,
and there is a good possibility that it can be certified.
YELLOW LED – With MIL off, there may be three possible
2)
conditions to cause the yellow LED to light.
 If a "Stored" Diagnostic Trouble Code is causing the yellow
LED to light, it is still possible that the vehicle will be
allowed to be tested for emissions and certified.

If a "Pending" Diagnostic Trouble Code is causing the
yellow LED to light, it is still possible that the vehicle will
be allowed to be tested for emissions and certified.

If the illumination of the yellow LED is being caused by
monitors that have not completed their diagnostic testing,
then the issue of the vehicle being ready for an Emission
-- Indicates that a particular monitor being checked
-- Indicates that a particular monitor being checked
-- The monitor is not supported on the vehicle.
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