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Test depends on the emission regulations and laws of your
local area.
NOTE
: From the code retrieval procedure, determine the status of
each Monitor. Take this information to an emissions professional to
determine (based on your test results) if your vehicle is ready for an
Emissions Test.
3)
RED LED
– Indicates there is a problem with one or more of
the vehicle’s system. A vehicle displaying a red LED is
definitely not ready for an Emission Test. The red LED is also
an indication that there are DTCs present. The MIL 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 suggested that the
vehicle be inspected/repaired before driving the vehicle further.
If the red LED was obtained, there is a definite problem present
in the system(s). In these cases, you have the following options:
Repair the vehicle yourself. If you are going to perform the
repairs yourself, proceed by reading the vehicle service
manual
and
following
all
its
procedures
and
recommendations.
Take the vehicle to a professional to have it serviced. The
problem(s) causing the red LED to light must be repaired
before the vehicle is ready for an Emissions Test.
Audio Tone Interpretation
The audio tone is configured according to the I/M Readiness Status.
This function is invaluable when performing diagnostics and driving
at the same time, or working in bright areas where LED illumination
alone is not sufficient.
Different audio tone with different LED light indicates different I/M
Readiness Status.
