1996 CADILLAC FLEETWOOD check engine

Downloaded from www.Manualslib.com manuals search engine Warning Lights. Gages and
Indicators
This part describes the warning lights and gages that
may be
on your vehicle. The pictures will help you
locate them.
Warning lights and gages can signal that something is
wrong before it becomes serious enough to cause an
expensive repair or replacement. Paying attention to
your warning lights and gages could also save you or
others from injury.
Warning lights come on when there may be or is a
problem with one
of your vehicle’s functions. As you
will see in the details on the next few pages, some
warning lights come on briefly when you start the
engine just to let you know they’re working. If you are
familiar with this section, you should not be alarmed
when this happens.
Gages can indicate when there may be or
is a problem
with one of your vehicle’s functions. Often gages and
warning lights work together to let you know when
there’s a problem with your vehicle. When
one
of the warning lights comes on and stays on
when you are driving, or when one of the gages shows
there may be a problem, check the section that tells you
what
to do about it. Please follow this manual’s advice.
Waiting to do repairs can be costly
-- and even
dangerous.
So please get to know your warning lights
and gages. They’re a big help.
Safety Belt Reminder Light
When the key is turned to RUN or START, a chime will
come on for about eight seconds to remind people to
fasten their safety belts, unless the driver’s safety belt is
already buckled.
The safety belt light
will also come
on and
stay on until the driver’s
belt is buckled.
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Downloaded from www.Manualslib.com manuals search engine Air Bag Readiness Light
There is an air bag readiness light on the instrument
panel, which shows AIR BAG. The system checks the
air bag’s electrical system for malfunctions. The light
tells you if there is an electrical problem. The system
check includes the air bag sensors, the air bag modules,
the wiring and the crash sensing and diagnostic module.
For more information on the
air bag system, see “Air
Bag” in the Index.
AIR
BAG
You will see this light flash
for
a few seconds when you
turn your ignition to
RUN
or START. Then the light
should go out. This means
the system is ready.
If the air bag readiness light doesn’t come on when you
start your vehicle, or stays on, or comes on when you
are driving, your air bag system may not work properly.
Have your vehicle serviced right away.
Charge Light
1+1
CHARGE
When you turn the key to
RUN or START, this light
will come on briefly, to
show that your alternator
and battery charging
systems
are working.
If
a light stays on, you need service, and you should take
your Cadillac to the dealer at once. To save your battery
until you get there, turn
off all accessories and set your
Electronic Climate Control system to
OFF.
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Downloaded from www.Manualslib.com manuals search engine Engine Coolant Temperature Warning Light
h k -
TEMP
This light should come
on briefly as a bulb check
when you start the engine.
This light tells you that
your engine coolant
has overheated.
Low Coolant Warning Light
LOW
COOLANT
If the coolant level in the
radiator is low, this light
will come on and stay on
until you add coolant.
Continuing
to drive your
vehicle with this warning
light on may result in
damage to your engine.
If you have been operating your vehicle under normal
driving conditions, you should pull
off the road, stop
your vehicle and turn the engine
off as soon as possible.
In “Problems on the Road,” this manual shows you what
to do.
See “Engine Overheating” in the Index. See
“Engine Coolant” in the Index and have your
vehicle serviced as
soon as you can.
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Downloaded from www.Manualslib.com manuals search engine Malfunction Indicator Lamp (Service Engine Soon
Light)
SERVICE
ENGINE
SOON CHECK
Domestic Canada
Your Cadillac is equipped with a computer which
monitors operation of the fuel, ignition and emission
control systems. This system
is called OBD
II (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, which
may prevent more serious damage to your vehicle. This
system is also designed to assist your service technician
in correctly diagnosing any malfunction.
.I
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Downloaded from www.Manualslib.com manuals search engine NOTICE:
If you keep driving your vehicre 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.
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. The following
may prevent more serious damage to
your vehicle:
0 Reduce vehicle speed.
0 Avoid hard accelerations.
0 Avoid steep uphill grades.
0 If towing a trailer, reduce the amount of cargo being
hauled as soon as it is possible.
If the light stops flashing and remains on steady, see “If
the Light Is On Steady” following.
If the light continues to flash, when it is safe to do so,
stop the vehicle. Put your vehicle in PARK (P). Turn the
key
off, wait at least 10 seconds and restart the engine.
If the light remains on steady, see
“If the Light Is On
Steady” following.
If the light is still flashing follow the
previous steps, and drive the vehicle to your dealer or
qualified service center for service.

Downloaded from www.Manualslib.com manuals search engine If the Light Is On Steady
You may be able to correct the emission system
malfunction by considering the following:
Did you just put fuel into your vehicle?
If
so, reinstall the fuel cap, making sure to fully install
the cap. The diagnostic system can determine if the fuel
cap has been left off or improperly installed. This will
allow fuel to evaporate into the atmosphere.
A few
driving trips should turn the light
off.
Did you just drive through a deep puddle of water?
If
so, your electrical system may be wet. The condition
will usually be corrected when the electrical system
dries out. A few driving trips should turn the light
off.
Are you low on fuel?
As your engine starts to run out of fuel, your engine may
not run as efficiently as designed since small amounts of
air are sucked into the fuel line causing
a misfire. The
system can detect this. Adding fuel should correct this
condition. Make sure to install the fuel cap properly.
It
will take a few driving trips to turn the light off. Have
you recently changed brands of fuel?
If
so, be sure to fuel your vehicle with quality fuel (see
“Fuel”
in the Index). Poor fuel quality will cause your
engine not to run as efficiently as designed. You may
notice this as stalling after start-up, stalling when you
put
the vehicle into gear, misfiring, hesitation on
acceleration or stumbling on acceleration. (These
conditions may go away once the engine is warmed up.)
This will be detected by the system and cause the light
to turn on.
If you experience this condition, change the fuel brand
you use. It will require at least one full tank of the
proper fuel to turn the light
off.
If none of the above steps have made the light turn off,
have your dealer or qualified service center check the
vehicle. Your dealer has the proper test equipment
and
diagnostic tools to fix any mechanical or electrical
problems that may have developed.
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I t

Downloaded from www.Manualslib.com manuals search engine Oil Pressure Light
WA
PRESSURE
This light comes on as a
bulb check when you start
the engine. If
it doesn’t, be
sure to have it fixed
so it
will be there
to warn you if
something goes wrong.
When
this light comes on and stays on, it means oil isn’t
going through your engine properly. You could be low
on oil, or
you might have some other oil problem.
Don’t keep driving if the oil pressure is low. If
you do, your engine can become so hot that it
catches fire. You or others could be burned.
Check your oil as
soon as possible and have your
vehicle serviced.
I NOTICE:
Damage to your engine from neglected oil
problems can be costly and
is not covered by
your warranty.
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Downloaded from www.Manualslib.com manuals search engine Low Oil Level Light
11 This light should come on
while you are starting your
engine provided that your
LOW
OIL LEVEL
engine has been off long
enough to let most
of the oil
drain back into the oil pan.
During frequent stopping and starting, the light will
not always come on as you
start the engine.
If it doesn’t come on, have it repaired. If the light comes
on and stays on, the engine oil level is too low. Check the
oil level and add enough oil to bring the engine oil level
up to the proper level.
See “Engine Oil” in the Index.
Change Oil Light t
CHANGE OIL
The CHANGE OIL light
should come on briefly as
a bulb check when you
start the engine. If the
light doesn’t come on,
have it serviced.
If the CHANGE OIL light comes on and stays on for
20 seconds after you start the engine, have the oil
changed. The light may indicate to change the oil sooner
than suggested in your maintenance schedule, depending
on your driving patterns. The light is activated by the
Oil Life Inlcator which determines the condition of the
oil but doesn’t sense heavy dust in the air or check the
oil level. Therefore, you should change your oil at the
intervals recommended in your maintenance schedule or
when the CHANGE OIL light comes on, whichever
comes first. See “Engine Oil” in the Index.