check engine light CHEVROLET CORVETTE 1994 4.G User Guide

Downloaded from www.Manualslib.com manuals search engine ASR
ACTIVE
ASR Active Light
When your ASR system is limiting wheel
spin, the “ASR ACTIVE’ light will come
on. Slippery road conditions may exist if
this light comes
on, so adjust your driving
accordingly. The light will stay on for a
few seconds after the ASR system stops
limiting wheel spin. The “ASR ACTIVE’
light also comes
on briefly, as a bulb
check, when the engine is started.
Low Tire Pressure Warning Light
(Option)
The LTPWS has a sensor on each road
wheel that transmits to a receiver
on the
instrument panel. The system operates on
a radio frequency subject to Federal
Communications Commission (FCC)
Rules.
This device complies with Part
15 of the
FCC Rules. Operation
is subject to the
following two conditions:
1. This device may not cause harmful
2. This device must accept any
interference,
and
interference received, including
interference that may cause undesired
operation.
Changes or modifications to this system
by other than an authorized service
facility could void authorization to use
this equipment.
LOWIFLAT
TIRE
..
The Low Tire Pressure Warning System
(LTPWS) monitors air pressure in each
road tire while you’re driving your
Corvette. The “LOW/FLAT TIRE” light
will come
on whenever tire pressure in
any road tire goes below
25 psi (175 kPa)
and it will stay
on until you turn off the
ignition. The light may come on if any
LTPWS parts aren’t working properly.
..
8
87 ...

Downloaded from www.Manualslib.com manuals search engine Features and Controls
For LTPWS to work properly, you must
drive your Corvette faster than
25 mph
(40 km/h) and for more than
2 miles
(4 km). The system will not warn you
before
you begin to drive that a tire is flat.
When the “LOW/FLAT TIRE’ light
comes on, check
the tire pressure in all
four road tires as soon as you can. Adjust
the tire pressure as needed to those shown
on the Tire-Loading Information label on
the driver’s door. If the light stays on after
the tire pressure is adjusted, see your
dealer.
NOTICE:
Driving with a flat tire may damage
the tire,
the wheel or the tire pressure
sensor installed inside the tire on the
wheel rim. Using tire sealants may
also damage
the sensor.
If you have EMTs, see “Extended
Mobility Tires”
in the Index. The
LTPWS sensor is directly opposite
the valve stem on the tire. Take care when
servicing or having your tires serviced.
The sensors may not work properly if
damaged. To prevent damage to the
sensors, see the 1994 Corvette Service
Manual for correct tire mounting and
dismounting procedures.
The “LOWRLAT TIRE” light may come
on if your vehicle is close to another
vehicle that has LTPWS and has a tire
with low pressure.
LTPWS can
warn you about a low tire,
but it does not replace normal tire
maintenance. See “Tires” in the Index.
. . .88

Downloaded from www.Manualslib.com manuals search engine SERVICE
SOON
0
Malfunction Indicator Lamp (Service Engine Soon Light)
A computer monitors operation of your
fuel, ignition and emission control
systems. This light should come on when
the ignition is on,
but the engine is not
running, as a check to show you it is
working. If it does not come on at all,
have it fixed right away. If it stays on, or
it comes on while you are driving, the
computer is indicating that you have a
problem.
You should take your vehicle in
for service soon.
NOTICE:
If you keep driving your vehicle
with this light on, after a while the
emission controls won’t work as
well, your fuel economy won’t be as
good and your engine may not
run as
smoothly. This could lead to costly
repairs not covered by your warranty.
W
OIL
PRESS
PSI
. .,
Engine Oil Pressure Gauge
This gauge tells you if there could be a
problem with your engine oil pressure.
The engine oil pressure gauge shows the
engine oil pressure
in psi (pounds per
square inch) or kPa (kilopascals) when
the engine is running. Oil pressure
should be
20 to 80 psi (140 to 550 kPa).
It may
vary with engine speed, outside
temperature and oil viscosity, but readings
above the shaded area show the normal
operating range. Readings in the shaded
area tell you that the engine
is low on oil,
or that you might have some other oil
problem. See “Engine Oil” in the Index.
91 ...

Downloaded from www.Manualslib.com manuals search engine Check Gauges Light
This light will come on briefly when you are starting
the engine. If the light comes
on and stays on while you are driving,
check your gauges to see if they are in
the warning areas.
This light can come on for:
high oil temperature or low oil
pressure
high coolant temperature
high or low battery voltage
low fuel level
LOW
OIL
L
Low Oil Light
This light should come on while you are
starting your engine. If
the light doesn’t
come on, have it repaired.
If the light
comes on while starting your engine and
stays on, your engine oil level may be too
low. You may need to add oil. See
“Engine Oil” in the Index.
LOW
COOLANT
Low Coolant Light
This light comes on when the coolant in
the system is low. You may need to add
coolant. See “Engine Coolant” in the
Index.
NOTICE:
Driving with the “LOW COOLANT”
light on could cause your Corvette to
overheat. See “Engine Overheating”
in the Index. Your Corvette could be
damaged, and it wouldn’t be covered
by your warranty.
93 ...

Downloaded from www.Manualslib.com manuals search engine Features and Controls
Zharging System Light
rhis light will come on when you turn on
he ignition, but the engine is not running
LS a check to show you it is working. It
ihould go out when the engine starts. If
t stays on or comes on while you are
Iriving, you may have a problem with
he electrical charging system. It could
ndicate that you have a loose or broken
lrive belt or another electrical problem.
3ave it checked right away. Driving whil
his light is
on could drain your battery.
:f you must drive a short distance with thl
ight on, be certain to turn
off all your
tccessories, such as the radio and air
:onditioner.
loor Ajar Light
’his light comes on when you open one
If the doors with the ignition on. It stays
In until you fully close the door. Have
‘our vehicle serviced if the light comes
In and stays on even when the doors are
ully closed.
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1
Sngine Oil Life Monitor
?he “CHANGE OIL” light comes on for
, few seconds when you turn the ignition
In. It will come on and stay on when it’s
ime to change your oil.
:he monitor uses oil temperature and
rngine revolutions to decide when the oil
s nearly worn out. The light is only a
eminder, though. You should change
‘our oil at the intervals recommended in
‘our Maintenance Schedule, even if the
‘CHANGE
OIL” light hasn’t come on.
3e sure to reset the monitor when your oil
s changed, even if the “CHANGE OIL”
ight didn’t come on. If you don’t reset
he monitor, it won’t work correctly.
Tollow these steps:
... 94

Downloaded from www.Manualslib.com manuals search engine Comfort Controls and Audio Systems
except ‘j and-; and at all
temperatures above freezing.
3. Press the arrows on the fan speed
switch if you don’t like the automatic
setting. In
“AUTO # ” on hot days,
the fan speed will be low at fist to
help get rid of the hot inside air..
When the air conditioner is on,
you may
notice slight changes
in your vehicle’s
engine speed and power. This is normal
because the system is designed to cycle
the compressor on and off to keep the
desired temperature and help fuel
economy.
Defogging and Defrosting
Windows
Your vehicle has several settings for
clearing your windows. The air
conditioner compressor will run to help
remove moisture from the air.
To defrost the windshield quickly:
1. Press the arrows on the “TEMP SET”
switch to set
a comfortable
temperature.
2. Press .
3. The fan will go to high speed. After
the windows are clear, you can lower
. . .I10
the speed using 7 or
“AUTO .”
To warm passengers while keeping the
windshield clear:
1. Press the arrows on the “TEMP SET”
switch
to set a comfortable
temperature.
2. Press -2 and at the same time.
3. Press the arrows on the fan speed
switch if you don’t like the automatic
setting.
To defrost
the side windows quickly:
1. Press the arrows on the “TEMP SET”
switch to set a‘comfortable
temperature.
2. Press c2 .
3. Press the arrows on the fan speed
switch if you don’t like the automatic
setting.
System Problems
If ,the light above a button flashes when
you turn on the ignition, your system may
have an electrical problem. The flashing
will continue for one minute, then stop.
The flashing light could also mean the
refrigerant level
is too low in your
system. The light will continue to flash, even
if refrigerant
is added, until the
system is reset. Have your system
checked and serviced
if needed.
To reset yoilr system:
1. Turn your ignition key to “Off’ or
2. Remove the courtesy lights and radio
fuses from the main fuse panel and
wait one minute. See “Fuses and
Circuit Breakers” in the Index.
3. Put the fuses back in and start your
The light shouldn’t come on and your
system should be working properly. If
you still have a problem, see your dealer.
“LOCK.”
vehicle.

Downloaded from www.Manualslib.com manuals search engine Your Driving and the Road
0
0
..
If other cars are lined up to pass a
slow vehicle, wait your turn. But take
care that someone isn’t trying to pass
you as you pull out to pass the slow
vehicle. Remember to glance over
your shoulder and check the blind
spot.
Check your mirrors, glance over your
shoulder, and start your left lane
change signal before moving out of
the right lane to pass. When you are
far enough ahead
of the passed vehicle
to see its front
in your inside mirror,
activate your right lane change signal
and move back into the right lane.
(Remember that your right outside
mirror is convex. The vehicle you just
passed may seem to be farther away
from you than it really is.)
Try not to pass more than one vehicle
at a time on two-lane roads.
Reconsider before passing the next vehicle.
Don’t overtake a slowly moving
vehicle too rapidly. Even though the
brake lights are not flashing, it may be
slowing down or starting
to turn.
If you’re being passed, make it easy
for the following driver to get ahead
of you. Perhaps you can ease a little
to the right.
,130
Loss of Control
Let’s review what driving experts say
about what happens when the three
control systems (brakes, steering and
acceleration) don’t have enough friction
where the tires meet the road to do what
the driver has asked.
In any emergency, don’t give up. Keep
trying to steer and constantly seek an
escape route or area of less danger.
Skidding
In a skid, a driver can lose control of the
vehicle. Defensive drivers avoid most
skids by taking reasonable care suited to
existing conditions, and by not
“overdriving” those conditions. But skids
are always possible.
The three types of skids correspond to
your Corvette’s three control systems.
In the braking skid your wheels aren’t
rolling. In the steering or cornering skid,
too much speed or steering in a curve
causes tires to slip and lose cornering
force. And in the acceleration skid too
much throttle causes the driving wheels
to spin.
A cornering skid
is best handled by
easing your foot
off the accelerator pedal. Remember: Any
ASR system helps avoid
only the acceleration skid. If your ASR
system is
off, then an acceleration skid is
also best handled by easing your foot off
the accelerator pedal.
If your vehicle starts to slide, ease your
foot
off the accelerator pedal and quickly
steer the way you want the vehicle to go.
If you start steering quickly enough, your
vehicle may straighten out. Always be
ready for a second skid if it occurs.
Of course, traction is reduced when water,
snow, ice, gravel, or other material is on
the road. For safety, you’ll want to slow
down and adjust your driving to these
conditions. It is important to slow down
on slippery surfaces because stopping
distance will be longer and vehicle
control more limited.

Downloaded from www.Manualslib.com manuals search engine Your Driving and the Road
vehicle with misaimed headlights), slow
down a little. Avoid staring directly into
the approaching lights.
Keep your windshield and all the glass
on your vehicle clean
- inside and out.
Glare at night is made much worse by dirt
on the glass. Even the inside of the glass
can build up a film caused by dust. Dirty
glass makes lights dazzle and flash more
than clean glass would, making the pupils
of your eyes contract repeatedly.
Remember that your headlights light up
far less of a roadway when you are in a
turn
or curve. Keep your eyes moving;
that way, it’s easier to pick out dimly
lighted objects. Just as your headlights
should be checked regularly for proper
aim,
so should your eyes be examined
regularly. Some drivers suffer from night
blindness
- the inability to see in dim
light
- and aren’t even aware of it.
. . .I32
Driving in the Rain
Rain and wet roads can mean driving
trouble. On a wet road you can’t stop,
accelerate or turn as well because your
tire-to-road traction isn’t as good as on
dry roads. And, if your tires don’t have
much tread left, you’ll get even less
traction. It’s always wise to go slower and
be cautious
if rain starts to fall while you
are driving. The surface may get wet
suddenly when your reflexes are tuned
for driving on dry pavement.
The heavier the rain, the harder it is to
see. Even if your windshield wiper blades
are in good shape, a heavy rain can make
it harder to see road signs and traffic
signals, pavement markings, the edge
of the road, and even people walking. It’s wise
to keep your wiping equipment
in good shape and keep your windshield washer tank filled. Replace your
windshield wiper inserts
when they show
signs of streaking or missing areas on the
Windshield, or when strips of rubber start
to separate from the inserts.

Downloaded from www.Manualslib.com manuals search engine Your Driving and the Road
City Driving
One of the biggest problems with city
streets is the amount of traffic on them.
You’ll want to watch out for what the
other drivers are doing and pay attention
to trafflc signals.
Here are ways to increase your safety in
city driving:
0 Know the best way to get to where
you are going. Get a city map and
plan your trip into an unknown part
of the city just as you would-for a
cross-country trip.
Try to use the freeways that rim and
crisscross most large cities. You’ll
save time and energy. (See the next
section, “Freeway Driving.”)
. . .I34
Treat a green light as a warning signal.
A traffic light is there because the
corner is busy enough to need it.
When a light turns green, and just
before
you start to move, check both
ways for vehicles that have not
cleared the intersection or may be
running the red light.
Freeway Driving
Mile for mile, freeways (also called
thruways, parkways, expressways,
turnpikes, or superhighways) are the
safest of all roads.
But they have their
own special rules.
The most important advice on freeway driving is: Keep up with traffic and keep
to the right. Drive at the same speed most
of the other drivers are driving. Too-fast
or too-slow driving breaks
a smooth
traffic flow. Treat the left lane
on a
freeway as a passing lane.
At the entrance there is usually a ramp
that leads to the freeway. If you have a
clear view of the freeway as you drive
along the entrance ramp, you should

Downloaded from www.Manualslib.com manuals search engine begin to check traffic. Try to determine
where you expect to blend with the flow.
Try to merge into the gap
at close to the
prevailing speed. Switch on your turn
signal, check your mirrors and glance
over your shoulder as often as necessary.
Try to blend smoothly with the traffic
flow.
Once you are on the freeway, adjust your
speed to the posted limit or to the
prevailing rate if it’s slower. Stay in the
right lane unless you want to pass.
Before changing lanes, check your
mirrors. Then use your turn signal. Just
before you leave the lane, glance quickly
over your shoulder to make sure there
isn’t another vehicle in your “blind” spot.
Once you are moving on the freeway,
make certain you allow a reasonable
following distance. Expect to move
slightly slower at night.
When you want to leave the freeway,
move to the proper lane well
in advance.
If you miss your exit do not, under any
circumstances, stop and back up. Drive on
to the next exit.
The exit ramp can be curved, sometimes
quite sharply. The exit speed is usually
posted. Reduce your speed according to your speedometer, not
to your sense of
motion. After driving for any distance at
higher speeds, you may tend to think you
are going slower than you actually are.
Before Leaving on a Long Trip
Make sure you’re ready. Try to be well
rested. If you must start when you’re not
fresh
- such as after a day’s work -
don’t plan to ,make too many miles that
first part
of the journey. Wear comfortable
clothing and shoes you can easily drive
in.
Is your vehicle ready for a long trip? If
you keep it serviced and maintained, it’s
ready to go. If it needs service, have it
done before starting out. Of course, you’ll
find experienced and able service experts
in Chevrolet dealerships all across North
America. They’ll be ready and willing to
help if you need
it.
Here are some things you can check
before a trip:
Windshield Washer Fluid: Is the
reservoir full? Are all windows clean
inside and outside?
0 Wiper Blades: Are they in good
shape?
0
0
Fuel, Engine Oil, Other Fluids:
Have you checked all levels?
Lights: Are they all working? Are the
lenses clean?
Tires: They are vitally important to a
safe, trouble-free trip.
Is the wead
good enough for long-distance
driving? Are the tires all inflated to
the recommended pressure?
Weather Forecasts: What’s the
weather outlook along your route?
Should you delay your trip
a short
time to avoid a major storm system?
Maps: Do you have up-to-date maps?
Highway Hypnosis
Is there actually such a condition as
“highway hypnosis”? Or is it jugt plain
falling asleep at the wheel? Call it
highway hypnosis, lack of awareness, or
whatever.
There is something about an easy stretch
of road with the same scenery, along with
the hum of the tires on the road, the drone
of the engine, and the rush of the wind
against the vehicle that can make you
sleepy. Don’t let it happen to you! If it
does, your vehicle can leave the road in
less than a second, and you could crash
and be injured.
135