Malfunction Indicator Lamp
(Service Engine
Soon
Light)
SERVICE
ENGINE
SOON
Your Geo is equipped with
a
computer which monitors
operation of the fuel,
ignition and emission
control systems.
This system is called OBD
I1
(On-Board
Diagnostics-Second Generation) and is intended to
assure that emissions are at acceptable levels for
the
life
of
the vehicle, helping to produce a cleaner
environment. (In Canada, OBD I1
is
replaced by
Enhanced Diagnostics.) The SERVICE ENGINE
SOON
light comes on to indicate that there is a problem and
service is required. Malfunctions often will be indicated
by the system before any problem
is
apparent. This may
prevent more serious damage to your vehicle. This
system
is
also designed
to
assist your service technician
in correctly diagnosing any malfunction.
NOTICE:
If you keep driving your vehicle with this light
on, after a while, your emission controls may not
work as well, your fuel economy may not be as
good and your engine may not run as smoothly.
This could lead
to
costly repairs that may not be
covered by your warranty.
This light should come on, as
a
check to show you it
is
working, when the ignition
is
on
and the engine is not
running.
If
the light doesn’t come on, have
it
repaired.
This light
will
also come on during a malfunction in one
of
two ways:
Light Flashing
--
A
misfire condition has been
detected.
A
misfire increases vehicle emissions
and
may damage the emission control system on your
vehicle. Dealer
or
qualified service center diagnosis
and service is required.
0
Light On Steady
--
An emission control system
malfunction has been detected on your vehicle.
Dealer or qualified service center diagnosis and
service may be required.
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I
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