suspension CADILLAC SEVILLE 1993 4.G Owners Manual

Downloaded from www.Manualslib.com manuals search engine For the 1948 model, Cadillac
introduced
the
which set the trend in autonlotive
styling for nearly
two decades. This
was followed by the 1949 model with
the two door hardtop Coupe DeVille
and
the modern overhead valve,
high compression
V8 engine.
Engineering innovations, con-
veniences and styling dominated the
'50s and '60s. Cruise control, auto-
matic climate control,
tilt and
telescoping steering wheels, twilight
sentinel and four door hard tops all
debuted in these years. In
1957 the
Eldorado Brougham featured ad-
vances such as air suspension, mem-
ory seat, automatic electric door
locks, transistor radio,
a brushed stainless steel
roof and
low profile
tires.
r' , The .. . . : ... . ...,:
t prado,l introduced in
1953, was redesigned for 1967 as the
first front wheel drive personal lux-
ury car.
The 472 cu. in. V8 engine
used in all Cadillacs in
1968 and
1969 was enlarged to 500 cu. in. for
all 1970 Eldorados.
An Air Cushion Restraint Sys-
tem (airbag) was available for 1974,
1975 and
1976 Cadillacs.
Analog Electronic Fuel Injec-
tion was available, on
1975 Cadillacs
and was standard on the new inter-
national size
7976 Seville. In 1978,
the Trip Computer option incor-
porated an on-board microprocessor.
1957 Eldorado Brougham

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 is the first
car ever to win all three major auto-
motive awards: Car
of the Year,
Motor Trend; Ten Best List, Car
&
Driver; Car of the Year, Automobile
Magazine.
A 1993 Cadillac Allant6 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
advanced systems as 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

Downloaded from www.Manualslib.com manuals search engine SERVICE RIDE CONTROL
This message is displayed to indicate that the Suspension System is not
operating properly.
To correct this problem have your vehicle serviced at
your Cadillac dealership at your earliest convenience.
STOP ENGINE ENGINE OVERHEATING
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
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 appear 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
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 SUPPLEMENTAL INFLATABLE RESTRAINT
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 PROBLEWCAR MAY NOT RESTART
This message means there is atroblem in the Personalized Automotive
Security System (PASS
Key I1 ). PASS Key I1 TM 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 TM system will need servicing.
TRACTION ACTIVE
If your vehicle is equipped with Traction Control, this message will be
displayed
if Traction Control is being used to reduce wheel slippage.
141

Downloaded from www.Manualslib.com manuals search engine Road Sensing Suspension (Northstar Only)
3
The Road Sensing Suspension automatically controls the ride of your
vehicle. The system controls damping forces in the shock absorbers and
struts
in response to various road and driving conditions. The system is
capable of making these changes
within milli-seconds.
The Road Sensing Suspension controller is a computer used to control
and monitor
the system. The computer receives inputs from vertical
acceleration sensors, wheel to body position sensors, vehicle speed
sensor, lift and dive signals, and determines optimum strut valving or
(suspension stiffness) for your current operating conditions. The
computer also receives feedback from the various components to
determine proper system operation. If the computer receives an incorrect
feedback from the system, an error code
will be set in memory and a
SERVICE RIDE CONTROL message
will display on the Driver
Information Center. If this message should appear, have your vehicle
serviced at your Cadillac dealer at your earliest convenience.
Oil Life Indicator
Your Cadillac has a Driver Information Center with an Oil Change
Indicator feature. This tells you when you need to change your engine oil.
It's based
upon the engine oil temperatures and your driving patterns.
To see the display,
press the Information
button several times until
" OIL LIFE
INDEX" appears.
143

Downloaded from www.Manualslib.com manuals search engine Speed Sensitive Suspension
The Speed Sensitive Suspension automatically controls the firmness of
your Cadillac’s ride.
An actuator in each of the four struts will change
ride firmness depending on vehicle speed and other driving conditions.
As the vehicle speed increases, the firmness of the suspension changes to
one or three damping modes “Comfort”, for speeds less than
40 mph,
“Normal” for speeds between
40 and 60 mph, and “Firm” for speeds
greater than
60 mph. The system also stiffens damping during hard
acceleration, braking and cornering for increased control.
A computer is used to control and monitor the system. The computer
receives speed, acceleration and determines optimum mode strut v\
alving
(or suspension stiffness) for your current operating conditions\
. The
computer also receives feedback from the struts to determine proper
system operation. If the computer receives an incorrect feedback from
the system,
an error code will be set in memory and a message
“SERVICE RIDE CONTROC‘
will be displayed until the problem is
corrected. If this message should appear, have your vehicle serviced at
your Cadillac dealer at your earliest convenience.
Electronic Level Control
This keeps your car level.
The ignition has
to be “ON” for the level control to work. When you turn
the ignition off, you may hear the level control exhausting. The system
consists of an electronic height sensor, a small electric air compressor,
and air adjustable shock absorbers mounted on the rear of
the vehicle.
If the system has a slight leak, the air compressor
will run frequently for a
few seconds each time.
For a massive air leak, the air compressor
will stay on for approximately 7
minutes. You should see your dealer for service, but you can keep driving
your Cadillac, though.
145

Downloaded from www.Manualslib.com manuals search engine c
P
___.__ HDIP Lo HDLP HI R H'C HI IGN 3 COOL FAN TRANSECS
i I
I FUSE CENTER IDENTIFICATION J
ENGINE COMPARTMENT FUSE BLOCK
COIL 20A - 4.9L DISTRIBUTOR - 4.6L IGNtTION CONTROL MODULE SIR 2OA
- DIAGNOSTIC ENERGY RESERVE - - - - - - -
LF4 DERM) SIR (AIR BAG) - MlNG SENSOR
PCM (IO 1.OA - POWE Y TRAIN CONTROL MODUL
INJ IOA - PASSKeyS DECODER MODULE MODULE
.E (PCM)
--FUEL INJECTORS 1,4,6,7 INJ 1OA - FUEL INJECTORS 2,3,5,8 ION 1OA - A/C COMPRESSOR - ELECTROCHROMIC MIRROR - INSTRUMENT PANEL CLUSTER - DIAGNOSTIC ENERGY RESERVE MODULE
- KEYLE &Pi S E TRY MO b ULE - CORNERING LIGHTS - CHIME MODULE - TWILIGHT SENTINEUDRL MODULE - BACKUP LIGHTS - BRAKE TRANSMISSION SHIFT INTERLOCK
- FUEL PUMP
(DERM SIR AIR BAG
FUEL
20A
PCU(&A IOA
AC IOI
MID W 8 101
$TOP LP ;Ku
fURNiHA2 20A
FQWERTWN CONTROL MOWlE
MI&€ a 7RAIFI CONTRO( uOMKE (PCM)
AC CCEUYellS3uA
HfArtO &NISH&AO
STOP LIGHTS
- HAZARD LIGHTS - TURN SIGNAL LIGHTS
DRL 1OA (CANADA)
DRL
10A (CANADA)
SUSPENSION 1OA
- DAYTIME RUNNING LIGHTS
- DAYTIME RUNNING LIGHTS
- ROAD SENSING SUSPENSION
- LNORTHSTW PEED SENSITIVE SUSPENSION (4.9L)
- R 6 AD SENSING SUSPENSION
- LEFT HEADIAMP LOW BEAM
- RT HEADLAMP LOW BEAM
- LEFT HEADIAMP HIGH BEAM
- RIGHT HEADIAMP HIGH BEAM
- HEATED WINDSHIELD - HEATER AND A/C PROGRAMMER
- ELECT. LEVEL CONTROL (ELC) - DEFOGGER RELAY "D"
- CRUISE CONTROL
- POWERTRAIN CONTROL MODULE
- COOLING FANS
- POWERTRAIN CONTROL MODULE 4.6L)
- FRONT AND REAR HEATED OXYGE L
RTD BAT) 20A
L HDLP LO 1OA (EXPORT)
R HDLP LO 1OA (EXPORT)
L HDLP HI 1OA (EXPORT)
R HDLP HI (EXPORT)
ION 3 1OA
COOLING FAN 1OA
SENSOR (4.6L) TRANSIECS 1 OA
SOLENOID -- EXHAUST GAS RECIRCULATION (EGR)
- POWERTRAIN CONTROL MODULE (PCM) - AUTOMATIC TRANSAXLE - EVAPORATIVE EMISSION CONTROL
- OVERSPEED ALERT MODULE (EXPOR
- POWER STEERING PRESSURE SWITC 3
SOLENOID
329
I
F

Downloaded from www.Manualslib.com manuals search engine I
e
LH MAXI@ FUSE BLOCK
FUSE 1 (50 AMP)
- RETAINED ACCESSORY POWER (RADIOMIIPERS)
- STARTER
- TRUNK COMR FUSE AI 1
- ENGINE COME FUSES Al, A3, A5, A?, A9,
All,A13
FUSE 2 (60 AMP)
U.S.A./CANADA Z49lSAUDI
- TRUNK COMP FUSES C1, C3, C5, C7, C9, C11
- ROAD SENSING SUSPENSION FUSE 2 EXPORT EXCEPT SAUDI (Sa AMP)
- ROAD SENSING SUSPENSION
- REAR FOG LIGHT (EXPORT)
- TRUNK COMF! FUSES C1, C3, C5, C7, C9, Cll, C13
CIRCUIT BREAKER 3 (30 AMP)
- FUEL DOOR RELEASE
- TRUNK RELEASE
- LEFT AND RIGHT POWER SEAT
- LEFT AND RIGHT LUMBAR CONTROL
- KEYLESS ENTRY MODULE
- POWER DOOR LOCKS
- HORNS
FUSE 4 (30 AMP)
- POWERTRAIN CONTROL MODULE (PCM)
- ELECTRONIC CLIMATE CONTROL
- RAPtIUUMINATED ENTRY MODULE
- INSTRUMENT PANEL CLUSTER
- PASSWB DECODER MODULE
- THEFT DETERRENT
FUSE 5 (60 AMP)
- LEFT AND RIGHT HEATED SEATS
- ELECTRONIC LEVEL CONTROL (ELC)
- TRUNK LID PULL DOWN
- POWER ANTENNA
- REAR DEFOGGER
- LEFT AND RIGHT MIRROR DEFOGGERS
FUSE 6 (60 AMP)
- RETAINED ACCESSORY POWER
(SUNROOFtPOWER WINDOWS)
- ENGINE COW FUSES C7, Dl, 03, D5
- TRUNK COW FUSES Al, A3, A5, A7
RH MAXI@ FUSE BLOCK
FUSE 1 (40 AMP)
- TURN/HAZ STOP LP
- PARK LIGHTS
FUSE 2 (30 AMP)
- DELCO-BOSE@ SPEAKERS
- RADIO CONTROL HEAD
- REMOTE RADIO RECEIVER
CIRCUIT BREAKER 3 (30 AMP)
- FLASH TO PASS FEATURE
- DAYTIME RUNNING LIGHT (DRL)
- HEADLIGHTS
FUSE 4 (40 AMP) HAVAC BLOWER
- HVAC POWER MODULE
- A/C COMPRESSOR
FUSE 5 (SO AMP) ABS
FUSE
6 (50 AMP) COOLING FANS
- ANTILOCK BRAKE PRESSURE VALVE
- COOLING FANS
330

Downloaded from www.Manualslib.com manuals search engine Front Suspension
Your fully independent front suspension is a combination strut and sp~
design. The frame is isolated from the body with six rubber mounts. -ing
Rubber bushings are used at the lower control arm pivots. The upper
end
of the strut is isolated by a rubber mount which contains a bearing to
allow for wheel turning. The Road Sensing Suspension
on the STS and
the Speed Sensing Suspension on Seville
will automatically controls the
damping rate
of the struts.
The lower end
of the steering knuckle pivots on a ball joint riveted to the
control arm. The ball joint is connected to the steering knuckle with a
castellated nut and cotter pin.
342

Downloaded from www.Manualslib.com manuals search engine ShortlLong Arm Suspension (SLA)
r
Your vehicle uses an independent shortfiong arm rear suspension. All the
rear suspension components are mounted
on a suspension support which
is attached to the
body at four points and is fully isolated with bushings
and insulators to minimize road noise. Each rear wheel is connected to
the suspension support through the suspension knuckle using an upper
and lower control arm and toe link.
The control arms and toe link are attached to the suspension support on
the inboard side, and to a suspension knuckle on the outboard side. The
hub and bearing assembly is mounted to the knuckle and is a single, non-
serviceable unit which eliminates the need for wheel bearing adjustment.
The load leveling
(ELC) shock absorbers are attached to the lower
control arm, with the upper end
of the shock attached to the suspension
support.
The springs are held in position between the lower control arms
and a pocket in the suspension support.
The suspension system also incorporates
a new damping system now as
Road Sensing Suspension on the
STS and Speed Sensing suspension on
343

Downloaded from www.Manualslib.com manuals search engine the Seville. These systems control the damping forces in the shock
absorbers and struts,
in response to various road and driving conditions.
The systems are capable of
making these damping changes extremely fast.
A computer receives inputs from vertical acceleration sensors, whee\
l to
body position sensors, vehicle speed sensor,
lift and dive signals. This
computer evaluates the inputs from these sensors, to control the damping
of each of the struts and shocks independently to provide varied levels of
suspension control.
The system also has the capability of providing Speed Sensitive Ste\
ering
control. This system changes your steering effort based on your\
vehicle
speed.
Speed Sensitive Steering
This system varies the amount of steering effort proportionate to your
vehicle speed. Steering is easier at
a lower speed for increased
maneuverability and parking ease.
As your vehicle speed increases, the
steering effort is also increased to provide a manual like steering feel for
maximum control and enhanced vehicle stability.
344
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A