1997 Oldsmobile Aurora check engine light

PASS-K~~~ 11
Your vehicle is equipped
with the PASS-Key I1
(Personalized Automotive
Security System)
theft-deterrent system.
PASS-Key
I1 is a passive
theft-deterrent system. It
works when you insert or
remove the key from
the ignition.
PASS-Key I1 uses a resistor pellet in the ignition key
that matches a decoder in your vehicle.
When the PASS-Key
I1 system senses that someone is
using the wrong key, it shuts down the vehicle’s starter
and fuel systems. For about three minutes, the starter
won’t work and fuel won’t go to the engine. If someone
tries to start your vehicle again or uses another key
,
during this time, the vehicle will not start. This
discourages someone from randomly trying different
keys with different resistor pellets in an attempt to make
a match. The
ignition key must be clean and dry before it’s
inserted in the ignition or the engine may not start.
If the
engine does not start and the SECURITY light is on
or
you get the CLEAN KEY. ..WAIT 3 MINUTES message
on the DIC, the key may be dirty or wet. Turn the
ignition
off.
Clean and dry the key. Wait about three minutes and try
again. The SECURITY light may remain on during this
time. If the starter still won’t work, and the key appears
to be clean and dry, wait about three minutes and try
another ignition key. At this time,
you may also want to
check the fuses
(see “Fuses and Circuit Breakers” in the
Index). If the starter won’t work with the other key, your
vehicle needs service. If your vehicle does start, the first
ignition key may be faulty. See your Aurora retailer or a
locksmith who can service the PASS-Key
11.
If you accidentally use a key that has a damaged or
missing resistor pellet, the starter won’t work. The
SECURITY light will flash and the CLEAN
KEY. ..
WAIT 3 MINUTES message will appear. But you don’t
have to wait three minutes before trying another
ignition key.

Tachometer
The tachometer displays the
engine speed in revolutions
per minute (rpm).
If your engine speed equals or exceeds the safe limit for
operation, the message HOT
... REDUCE ENGINE RPM
is displayed on the information center.
I NOTICE: I
Do not operate the engine with the tachometer in
the red area,
or when the message
HOT. ..REDUCE ENGINE RPM is displayed.
Engine damage may occur.
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.

Your vehicle may also have a driver information system
that works along with the warning lights and gages. See
“Driver Information Center” in the Index.
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.
The safety belt light will
also come on and stay on
for about
70 seconds. If the
driver’s belt is already
buckled, neither the chime
nor the light will come on.
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
This light will come on
when you start your engine,
and it will flash for a few
seconds. Then the light
should go out. This means
the system is ready.
If the air bag readiness light stays
on after you start the
engine or comes on when you are driving, your air bag
system may not work properly. Have your vehicle
serviced right away.
The air bag readiness light should flash for a few
seconds when you turn
the ignition key to RUN. If the
light doesn’t come on then, have it fixed
so it will be
ready to warn you
if there is a problem.

Battery Warning Light
U
VOLTS
This light will come on
briefly when you start the
vehicle, as a check to show
you it is working, then it
should go out. If
it stays on,
or comes on while
you are
driving, you may have a
problem with the electrical
charging system.
A warning chime and the message CHECK CHARGE
SYSTEM may also come on. Have it checked right
away. Driving while this light is on could drain
your battery.
If you must drive a short distance with the light on, be
certain to turn off all your accessories, such as the radio
and climate control.
Brake System Warning Light
Your Aurora’s hydraulic brake system is divided into
two parts. If one part isn’t working, the other part can
still work and stop you. For good braking, though, you
need both parts working well.
This light should come on
when you turn
the ignition
key to
START. If it doesn’t
come
on then, have it fixed
so it will be ready to warn
BRAKE (a) you if there’s a problem. FLUID
If this warning light stays on after you start the engine,
there could be a brake problem. Have your brake system
inspected right away.
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Malfunction Indicator Lamp
(Service Engine
Soon Light)
SERVICE
ENGINE SOON
Your Aurora 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:
a
0
Light Flashing -- A misfire condition has been
detected. A misfire increases vehicle emissions and
may damage the emission control system on your
vehicle. Retailer or qualified service center diagnosis
and service is required.
Light On Steady -- An emission control system
malfunction has been detected on your vehicle.
Retailer or qualified service center diagnosis and
service may be required.

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 one or more of these conditions,
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 retailer or qualified service center check
the
vehicle. Your retailer has the proper test equipment and
diagnostic tools to fix any mechanical or electrical
problems that may have developed.
Oil Pressure Warning Light
OIL
If you have a problem with
your oil, this light may stay
on after you start your
engine,
or come on when
you
are driving. A warning
chime and the message
LOW OIL PRESSURE may
also come on.
These indicate that oil
is not going through your engine
quickly enough to keep it cool. The engine could be low
on oil, or could have some other oil problem. Have it
fixed right away.
2-77

The oil light could also come on in three other situations:
When the ignition is on but the engine is not running,
the light will
come on as a test to show you it is
working, but the light will go out when you turn the
ignition to
START. If it doesn’t come on with the
ignition
on, you may have a problem with the fuse or
bulb. Have it fixed right away.
0 Sometimes when the engine is idling at a stop, the
light may blink on and off. This is normal.
If you make a hard stop, the light may come on for a
moment. This is normal.
d!!, CAUTION:
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.
NOTICE:
Damage to your engine from neglected oil
problems can be costly and
is not covered by
your warranty.
2-78

Avoid needless heavy braking. Some people drive in
spurts
-- heavy acceleration followed by heavy
braking
-- rather than keeping pace with traffic. This is a
mistake. Your brakes may not have time to cool between
hard stops. Your brakes will wear out much faster
if you
do
a lot of heavy braking. If you keep pace with the
traffic and allow realistic following distances, you will
eliminate a lot of unnecessary braking. That means
better braking and longer brake life.
If your engine ever stops while you’re driving, brake
normally but don’t pump your brakes. If you do, the
pedal may get harder to push down. If your engine
stops, you will still have some power brake assist. But
you will use it when you brake. Once the power assist is
used up, it may take longer to stop and the brake pedal
will be harder to push.
Anti-Lock Brakes
Your vehicle has anti-lock brakes (ABS). ABS is an
advanced electronic braking system that will help
prevent a braking skid.
When you start your engine and begin to drive away,
your anti-lock brake system will check itself. You may
hear a momentary motor or clicking noise while this test
is going on, and you may even notice that your brake
pedal moves a little. This is normal.
LOCK
ANT‘- (@)
If there’s a problem with the
anti-lock brake system, this
warning light will stay on.
See “Anti-Lock Brake
System Warning Light” in
the Index.
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