1994 CADILLAC ELDORADO traction control

Downloaded from www.Manualslib.com manuals search engine This rich tradition continues
into
the '90s as Cadillac became the
first automobile manufacturer
to be
awarded the prestigious Malcolm
Baldrige National Quality Award.
The
1992 Seville STS was the
first car ever to win all three major
automotive awards: Car
of the Year,
Motor Trend; Ten Best List, Car &
Driver; Car of the Year, Automobile
Magazine.
A 1993 Cadillac Allantk in stock
technical configuration, was selected
as the pace car for the
76th Indianap-
olis
500. The demanding pace car
performance and handling require- ments were met because of such
advances as the Northstar system.
The system includes the
32 valve,
dual overhead camshaft, Northstar
4.6 liter V8 engine, 4T80 E electroni-
cally controlled automatic transaxle,
road sensing suspension, .speed sen-
sitive steering, antilock brakes and
traction control. For more than nine decades
Cadillac has been a leader in quality
and technical innovation. Now more
than ever. substance takes shape
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Downloaded from www.Manualslib.com manuals search engine STOP ENGINE ENGINE 0-TED - 42
This message will appear when your engine has overheated. Stop and
turn your engine off immediately to avoid severe engine damage. See
“Engine Overheating”
in the Index.
SERVICE VEHICLE SOON - 03
This message will appear if there is a problem with your Emission
Control System. If the “SERVICE ENGINE SOON” light on the
instrument panel and this message appears and then turns
off, it is an
indication that a temporary problem has cleared itself. Have your vehicle
checked at your earliest convenience.
STOP ENGINE LOW OIL PRESSURE - 35
If this message appears while the engine is running, stop the engine and
do not operate it until the cause of low oil pressure is corrected. Severe
damage to the engine can result.
SERVICE AIR BAG SYSTEM - 83
If this message appears, there is a problem with your Supplemental
Inflatable Restraint (Air Bag) system. Let only a qualified technician
work
on your vehicle. See your Cadillac dealer for service at once.
THEFT SYSTEM PROBLEM/CAR MAY NOT RESTART - 34
This message means there is a problem in the Personalized Automotive
Security System (PASS Key@ 11). PASS Key@ I1
will prevent the vehicle
from restarting
if it is turned off, so you should take the vehicle to a
proper service center before turning the engine
off. Never leave an
unattended vehicle with the engine running. Once you are where you can
get service, turn the engine off and then try to restart it. If
the vehicle
does not restart, the PASS Key@ I1 system will need servicing.
TRACTION ACTIVE - 91
If your vehicle is equipped with Traction Control, this message will be
displayed if Traction Control is being used to reduce wheel slippage.
TRACTION DISABLED - 88
If your vehicle is equipped with Traction Control, this message will be
displayed
if a problem is noted in the Traction Control System. Have your
vehicle serviced as soon as possible.
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Your vehicle has traction control system that limits wheel spin. This is
especially useful in slippery road conditions. The system operates only
if
it senses that one or both of the front wheels are spinning or- beginning to
lose traction. When .this happens, the system works the front brakes and
reduces engine power (by shutting
off fuel injectors) to limit wheel spin.
The “TRACTION ACTIVE” message will display on the Driver
Information Center when the traction control system is limiting wheel
spin. See “Driver Information Center Messages” in the Index. You may
feel the system working, or you may notice some noise, but this
is nomal.
If your vehicle is in cruise control when the traction control system begins
to limit wheel spin, the cruise control will automatically disengage. When
road conditions allow you to safely use it again, you may
turn the cruise
control back on. (See “Cruise Control” in the Index.)
The “TRACTION DISABLED” message
will display on the Driver
Information Center
if there’s a problem with your traction control system.
See “D,river Information Center Messages” in the Index. When. this
message is displayed, the system will not limit wheel spin. Adjust your
driving accordingly.
Braking in Emergencies
Use your anti-lock braking system when you need to. With anti-lock, you
can steer and brake at the same time. In many emergencies, steering can
help you more than even the very best braking.
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Downloaded from www.Manualslib.com manuals search engine STEEMNG
Power Steering
L_
c-
If you lose power steering assist because the engine stops or the system is
not functioning, you can steer but it
will take much more effort.
Steering Tips
Driving on Curves
It’s important to take curves at a reasonable speed.
A lot of the “driver lost control” accidents mentioned on the news
happen on curves. Here’s why:
Experienced driver or beginner, each
of us is subject to the same laws of
physics when driving on curves. The traction of the tires against the road
surface makes it possible for the vehicle to change its path
when you turn
the front wheels. If there’s no traction, inertia will keep the vehicle going
in the same direction. If you’ve ever tried to steer a vehicle on wet ice,
you’ll understand this.
The traction you can get in a curve depends
on the condition of your tires
and the road surface, the angle at which the curve is banked, and your
speed. While you’re in a curve, speed is the one factor you can control.
Suppose you’re steering through a sharp curve. Then
you suddenly
accelerate. Both control systems
-- steering and acceleration -- have to do
their work where the tires meet the road. Unless you have the traction
control system, adding the sudden acceleration can demand too much
of
those places. You can lose control.
What should you do
if this ever happens? Ease up on the accelerator
Pedal, steer the vehicle the way you want it to go, and slow down.
31 ~ :d limit signs near curves warn that you should adjust your speed. Of
course, the posted speeds are based on good weather and road
conditions. Under less favorable conditions you’ll want to go slower.
If you need to reduce your speed as you approach a curve, do it before
you enter the curve, while your front wheels are straight ahead.
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e.4
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Downloaded from www.Manualslib.com manuals search engine 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.
LOSS OF CONTROL
Let’s review what driving experts say about what happens whe\
n the three
control systems (brakes, steering and acceleration) don’t ha\
ve 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 Cadillac’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.
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 .md adjust
your driving
to these conditions. It is important to slow dowr on slippery
surfaces because stopping distance will be longer and vehicle control
more limited.
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Downloaded from www.Manualslib.com manuals search engine Most of the time, those places where your tires meet the:roaa probably
have good traction.
However,
if there is snow or ice between your tires and the road, you can
have
a very slippery situation. You’ll have a lot less traction or “grip” and
will need to be
very careful.
What’s the worst time for this? “Wet ice.” Very cold snow or ice can be
slick and hard to drive on. But wet ice can be even more trouble because
it may offer the least traction of all. You can get “wet
ice” when it’s about
freezing
(32 F; 0 C) and freezing rain begins to fall. Try to avoid driving
on wet ice untihalt and sand crews can get there.
Whatever the condition -=smooth ice, packed, blowing or loose snow
--
drive with caution.
If you have the traction control system, it will improve your ability to
accelerate when driving on a slippery road. Even though your vehicle has
a traction control system, you’ll want to slow down and adjust your
driving to the road conditions. See “Traction Control System” in the
Index.
Your anti-lock brakes improve your ability to make a hard stop on a
slippery road. Even though you have the anti-lock braking system, you’ll
want
to begin stopping sooner than you would on dry pavement. See
“Anti-lock” in the Index.
Allow greater following distance on any slippery road.
Watch for slippery spots. The road might be fine until you hit a spot
that’s covered with ice. Oman otherwise clear road, ice patc\
hes may appear in shaded areas where the sun can’t reach: around clumps
of
trees, behind buildings, or under bridges. Sometimes the surface of a
curve or an overpass may remain icy when the surrounding roads are
clear.
If you see a patch of ice ahead of you, brake before you are on
it.
Try not to brake while you’re actually on the ice, and avoid sudden
steering maneuvers.
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l by treadwear,-traction and teqqerature gwfQrmance. (This applies only
r
to vehicles sold in the United (States.)
Treadweat
. . , .--, . .
r The treadwear grade is .a comparative rating based on the wear rate of
the tire when tested .under controlled -conditions on a specified
.government test course. .For example, a tire graded 150 would \
wear one
and a half
(I 1/2) times as well on the government course-as a tire graded
’ 100. The relative performance of tires depends uponthe .actual
conditions of.their use, however, and may depart significant@
frorri the
norm due to variationsin driving habits, service practices and differences
in rodd characteristics and climate.
.r Daction -A, B, C
t The traction grades, from highest to lowest are: A, B, and C. They
represent the tire’s ability to stop on wet-pavement as measured under
controlled conditionson specified government test surfaces of asphalt
’ and concrete. A tire marked C may have poor traction p.erformance.
Warning: The traction. grade assigned to this tire is based on braking
(straight-ahead) traction tests and doemot include cornering (turning)
r traction.
r Temperature -A, B, C
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The temperature grades. are A (the. highest), B, and C, representing the
tire’s resistance to the generation of heat and its ability to dissipate heat
when tested under controlled conditions.on a specified indoor laborato\
ry
test .wheel. Sustained
high tevperature can cause the material of the tire
to degenerate and reduce tire.life, and excessive temperature can lead to
- sudden tire failure. The.gradq C corresponds to a level of performance
1- which all passenger car tires mustmeet under the,Federal Motor Vehicle
Safety Standard
No. 109. Grades €3 and A represent higher levels of
performance on thelaboratory test wheel than the.minimum required\

e- bylaw.
Warning: The temperature grade for this tire is established for a tire that
is. properly inflate.d and not overloaded. Excessive speed, unde\
rinflation,
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4T80-E Transaxle
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The 4T80-E transaxle has been designed to complement the output
characteristics
of the Northstar engine. The innovative design
incorporates several features which enhance its overall operation.
This transaxle
is the first of a new generation of “SMART” transmissions.
The computer which controls the electronic shift solenoids adapts to
changing environments while you drive. This provides consistent high
quality shifts under all conditions. Communication between the engine
and transaxle through this computer controls engine output during
activation
of torque management or traction control. Smooth shifting is
ensured
by design. Hydraulic accumulators control shift pressures and all
shifts are made
to free wheeling elements.
The
4T80E uses a dry sump lubrication system with a scavenger pump.
This unique feature enables the transaxle to maintain adequate
pressurized oil supply during all maneuvers.
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