Full Product Manual

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OK – indicates that a particular monitor being checked has completed
its diagnostic testing.
INC – indicates that a particular monitor being checked has not
completed its diagnostic testing.
N/A – the monitor is not supported on the vehicle.
The LED and audio tone are interpreted as below:
LED Interpretation
 GREEN LED – indicates that engine systems are “OK” and operating
normally (the number of Monitors supported by the vehicle that have
run and performed their self-diagnostic testing is in the allowed limit.
MIL is off).There are neither stored not pending DTCs. The vehicle is
ready for an Emissions Test, and there is a good possibility that it can
be certified.
 YELLOW LED – with MIL off, there may be three possible 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.
 The Yellow LED will also light if the monitors do not complete their
tests. Each state’s emissions standards differ on the number of
tested monitors needed to meet vehicle emissions compliance.
NOTE
Confer with your automotive technician about the status results of each
monitor to determine if the vehicle is ready for your state’s emissions test.
 RED LED – indicates there is a problem with one or more of the
vehicle’s system. The test of a vehicle resulting in a lit red LED lighting
is not ready for an Emissions Test. The red LED is also an indication
that there are DTCs present. The MIL lamp on the vehicle’s instrument
panel will light steady. The problem that is causing the red LED to light
must be repaired before an Emissions Test can be performed. It is also