Chevrolet 1996 Cavalier Owner's Manual Page 129

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Malfunction Indicator Lamp
(Check Engine Light)
Your Chevrolet is equipped
with a computer which
monitors operation of the
fuel, ignition and emission
CHECK
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 CHECK ENGINE 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, which 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
af 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.
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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