1996 CHEVROLET CORVETTE check engine

Downloaded from www.Manualslib.com manuals search engine Service LTPWS Light (Option)
SERVICE
LTPWS
The SERVICE LTPWS light
comes on whenever a
LTPWS part is not working
properly. It may also come
on when you’re going less
than
25 mph (40 kmh) or in
stop-and-go traffic.
The light will go out when the electronic receiver gets a
signal from each sensor.
Check the system by turning the ignition on. The light
should come on and then go out. See your dealer
if the
light stays on or doesn’t come on. Here
are two situations that cause the SERVICE LTPWS
light to come on and stay on.
Both of these situations are
normal and do not indicate that anything is wrong with
your Corvette.
0 You turn the ignition on three times in a row within
half an hour without moving your Corvette. The light
will then come on every time you turn the ignition
on until you move your Corvette.
0 You run your Corvette three times within half an
hour while all four sensors are missing. (All the
sensors would be missing, for example, if you put
different wheels on your Corvette without
transferring the sensors.)
If
you would like to clear the SERVICE LTPWS light
from your Driver Information Center permanently, see
your dealer.
If the light comes on and stays on, even when the
vehicle is driven, there may be a problem with LTPWS.
See your dealer.
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Downloaded from www.Manualslib.com manuals search engine Malfunction Indicator Lamp (Service Engine Soon Light)
Your Corvette is equipped
with a.computer which
SERVICE
SOON
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, 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 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 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:
0
0 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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Downloaded from www.Manualslib.com manuals search engine 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.
Low Oil Light
LOW
OIL
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.
2-88

Downloaded from www.Manualslib.com manuals search engine Engine Oil Pressure Gauge
0
WA
OIL
PRESS
PSI
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 Wa).
(In certain situations such as long, extended idles on hot
days, it could read as low as
6 psi (40 kPa) and still be
considered normal.) 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.
A CAUTIOh:
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 1
NOTICE:
Damage to your engine from neglected oil
problems can be costly and
is not covered by
your warranty.
2-89

Downloaded from www.Manualslib.com manuals search engine Engine Oil Temperature Gauge
320
OIL TEMP OF
This gauge shows your
engine oil temperature. Oil
temperature may vary with
the type
of driving you do
and weather conditions.
If your gauge pointer moves close to or into the shaded
area and stays there, your oil temperature is too high.
Check the engine coolant temperature and engine oil
level.
If your engine is too hot, see “Engine
Overheating” in the Index. Your vehicle may need
service; see your dealer.
I,
For numeric gauge
measurements, press the GAUGES button on the trip
monitor until
OIL appears.
The number that appears next to the fuel gauge is the oil
temperature.
If LO appears, the temperature is below
32°F (OOC).
2-90

Downloaded from www.Manualslib.com manuals search engine Security Light Check Gauges Light
SECURITY
This light comes on to
remind you to
arm your
theft-deterrent system. If it
comes on and stays on when
your ignition is on, there
may be a problem with your
theft-deterrent system.
CHECK
GAUGES
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.
See “Universal Theft-Deterrent” and “PASS-Key
System” in the Index.
System Problems Light
If SYS flashes on the display near your fuel gauge, there
may be a problem with your Corvette’s electrical
system. If the
SECURITY light flashes at the same time,
there is
a problem with your theft-deterrent system.
Have your vehicle checked by your dealer
if SYS keeps
appearing. This
light can come on for:
0 High Engine Oil Temperature or Low oil Pressure
High Coolant Temperature
High or Low Battery Voltage
0 Low Fuel Level
0 High Automatic Transmission Fluid Temperature
2-93

Downloaded from www.Manualslib.com manuals search engine Automatic Transmission Fluid Temperature Reading
Automatic transmission
fluid temperature will
be displayed if you press
the GAUGES button on
the trip monitor until
AUTO appears.
The number that appears next to the fuel gauge is the
automatic transmission fluid temperature. If
LO appears,
the temperature is below 32°F (0°C). It’s
normal for the transmission fluid temperature to
vary, depending on the type
of driving you do and
weather conditions. If you drive on long grades on a hot
day, the transmission fluid temperature will be higher
than normal driving on a cold day. If you
drive your
Corvette at high speeds with a lot of stop-and-go or fast
accelerations, your transmission fluid temperature may
also be higher.
If the transmission fluid exceeds
280” F (1 38 “C), the
CHECK GAUGES light will come on and HI AUTO
will be displayed next to the transmission fluid
temperature when you toggle through the GAUGES
button. You should move the shift lever to DRIVE
(D)
and continue driving at a slower, constant speed.
Monitor the transmission fluid temperature and allow it
to cool to 180°F (82°C) to 200°F (93°C). Then, you
should check the transmission fluid level for a low fill or
overfill condition and bring your Corvette in for service
as soon as possible if the oil is too low or overfilled.
(See “Automatic Transmission Fluid” in the Index.)
Also, check the engine coolant temperature. If it’s too
hot, see “Cooling System” in the Index.
2-97

Downloaded from www.Manualslib.com manuals search engine I
System Problems
If the light above an air control 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 your system:
1. Turn your ignition key to OFF or LOCK.
2. Remove the courtesy lamps 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 vehicle.
The light shouldn’t come on and your system should be
working properly. If you still have
a problem, see
your dealer.
Rear Window Defogger
II
0 n
0
The rear window defogger uses a warming grid to
remove fog from the rear window. The power mirrors
are also warmed when the rear window defogger is on.
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