2002 BUICK CENTURY fuse

6-3
CAUTION:
You can be injured and your vehicle could be
damaged if you try to do service work on a
vehicle without knowing enough about it.

Be sure you have sufficient knowledge,
experience, the proper replacement parts
and tools before you attempt any vehicle
maintenance task.

Be sure to use the proper nuts, bolts and
other fasteners. ªEnglishº and ªmetricº
fasteners can be easily confused. If you use
the wrong fasteners, parts can later break
or fall off. You could be hurt.
Adding Equipment to the Outside of
Your Vehicle
Things you might add to the outside of your vehicle can
affect the airflow around it. This may cause wind noise
and affect windshield washer performance. Check with
your dealer before adding equipment to the outside of
your vehicle.
Fuel
Gasoline Octane
Use regular unleaded gasoline with a posted octane of
87 or higher. If the octane is less than 87, you may
get a heavy knocking noise when you drive. If it is bad
enough, it can damage your engine. A little pinging
noise when you accelerate or drive uphill is considered
normal. This does not indicate a problem exists or that
a higher
-octane fuel is necessary.

6-10 Engine Compartment Overview
When you open the hood, you will see:
A. Windshield Washer Fluid Reservoir
B. Battery
C. Remote Positive (+)
Battery Terminal
D. Underhood Fuse BlockE. Radiator Pressure Cap
F. Engine Coolant Recovery Tank
G. Power Steering Fluid Reservoir
H. Engine Oil Fill Cap
I. Engine Oil DipstickJ. Automatic Transaxle
Fluid Dipstick
K. Brake Fluid Reservoir
L. Engine Air Cleaner/Filter

6-44
To reset (calibrate) the system:
1. Turn the ignition to RUN.
2. Locate the red RESET button inside of your
instrument panel fuse block.
The fuse block is located under the cover labeled
FUSES, which is at the end of the instrument panel on
the passenger's side of the vehicle. The RESET button
is the first button in the top row of the fuse block.
3. Press and hold the RESET button for about
five seconds.
The LOW TIRE light will come on and flash three
times. Then it will go off. If the light doesn't go off,
see your dealer for service.
The system completes the calibration process during driving.
The system normally takes 15 to 20 minutes of driving in
each of three speed ranges to ªlearnº tire pressures. The
speed ranges are 15 to 40 mph (25 to 65 km/h), 40 to
65 mph (65 to 105 km/h) and above 65 mph (105 km/h).
When learning is complete, the system will alert you after
two to eight minutes if a tire is 12 psi (83 kPa) different
from the other three tires. Detection thresholds may be
higher and detection times may be longer on rough roads,
curves and at high speeds. The system is not capable of
detection at speeds greater than 70 mph (110 km/h).Tire Inspection and Rotation
Tires should be rotated every 6,000 to 8,000 miles
(10 000 to 13 000 km). Any time you notice unusual
wear, rotate your tires as soon as possible and check
wheel alignment. Also check for damaged tires or wheels.
See ªWhen It's Time for New Tiresº and ªWheel
Replacementº later in this section for more information.
The purpose of regular rotation is to achieve more
uniform wear for all tires on the vehicle. The first
rotation is the most important. See ªScheduled
Maintenance Servicesº in the Index for scheduled
rotation intervals.
When rotating your tires, always use the correct rotation
pattern shown here.

6-60
Electrical System
Add-On Electrical Equipment
NOTICE:
Don't add anything electrical to your vehicle
unless you check with your dealer first. Some
electrical equipment can damage your vehicle
and the damage wouldn't be covered by your
warranty. Some add
-on electrical equipment
can keep other components from working as
they should.
Your vehicle has an air bag system. Before attempting to
add anything electrical to your vehicle, see ªServicing
Your Air Bag
-Equipped Vehicleº in the Index.
Headlamp Wiring
The headlamp wiring is protected by a circuit breaker in
the underhood fuse block. An electrical overload will
cause the lamps to go on and off, or in some cases to
remain off. If this happens, have your headlamp system
checked right away.
Windshield Wipers
The windshield wiper motor is protected by a circuit
breaker and a fuse. If the motor overheats due to heavy
snow, etc., the wiper will stop until the motor cools.
If the overload is caused by some electrical problem,
have it fixed.
Power Windows and Other Power Options
Circuit breakers in the instrument panel fuse block
protect the power windows and other power accessories.
When the current load is too heavy, the circuit breaker
opens and closes, protecting the circuit until the problem
is fixed.

6-61 Fuses and Circuit Breakers
The wiring circuits in your vehicle are protected from
short circuits by a combination of fuses, circuit breakers
and in the wiring of the fuse block itself. This greatly
reduces the chance of fires caused by electrical problems.
Look at the silver
-colored band inside the fuse. If the
band is broken or melted, replace the fuse. Be sure you
replace a bad fuse with a new one of the identical size
and rating.
Instrument Panel Fuse Block
Some fuses are located in a
fuse block on the instrument
panel on the passenger's
side of the vehicle. Pull off
the cover labeled FUSES
to expose the fuses.
Circuit Breaker Usage
TIRE RESET Tire Inflation Monitor
Reset Button
PWR WINDOWS,
PWR SUNROOFPower Windows,
Power Sunroof
REAR DEFOG Rear Window Defogger
POWER SEATS Power Seats
Blank Not Used

6-62
Fuse Usage
PARK LOCK Ignition Key Solenoid
Blank Not Used
Blank Not Used
PCM, BCM,
U/H RELAYIgnition Signal: Hot in Run and
Start, Powertrain Control
Module, Body Control Module,
Underhood Relay
RADIO
PREM. SOUNDRemote Radio Premium Sound
POWER MIRRORS Power Mirrors
Blank Not Used
PANEL DIMMING Panel Dimming
Blank Not Used
IGN 0, CLUSTER,
PCM, BCMIgnition Signal: Hot in Run,
Unlock and Start, Cluster,
Powertrain Control Module,
Body Control ModuleFuse Usage
Blank Not Used
Blank Not Used
Blank Not Used
INADV
POWER BUSRetained Accessory Power
DOOR LOCKS Door Locks
TRAP ALERT Trap Alert

TAIL LAMPS,
LIC LAMPSTaillamps, License Lamps
RADIO Radio
HEATED MIRROR Heated Mirrors
CRUISE Cruise Control
Blank Not Used
CLUSTER Instrument Panel Cluster
CIGAR LTR Cigarette Lighter,
Auxiliary Power Connection
(Power Drop)

6-63
Fuse Usage
STOP LAMPS Stoplamps
ONSTAR OnStar


FRT PARK LPS Parking Lamps
POWER DROP Auxiliary Power Connection
(Power Drop): Hot in ACC
and Run
CRANK SIGNAL,
BCM, CLUSTERCrank Signal, Body Control
Module, Cluster, Powertrain
Control Module
HVAC Ignition Signal, Heating
Ventilation Air Conditioning
Control Head
BTSI PARK LOCK Shifter Lock Solenoid
AIR BAG Air Bag
BCM PWR Body Control Module
HAZARD Hazard Flashers
LH HEATED SEAT Driver's Heated SeatFuse Usage
Blank Not Used
BCM ACC Ignition Signal: Hot in ACC
and Run, Body Control Module
Blank Not Used
LOW BLOWER Low Blower
ABS Anti
-Lock Brakes
TURN SIGNALS,
CORN LPSTurn Signals, Cornering Lamps
RADIO, HVAC,
RFA, CLUSTERRadio, HVAC Head, Remote
Keyless Entry, Cluster
HIGH BLOWER High Blower
RH HEATED SEAT Passenger's Heated Seat
STRG WHL CONT Audio Steering Wheel Controls
WIPER Wipers

6-64
Underhood Fuse Block
Some fuses and relays are located in the underhood fuse
block in the engine compartment on the passenger's side
of the vehicle. See ªEngine Compartment Overviewº in
the Index for more information on location.Maxi Fuse Usage
1 ABS
2 Starter Solenoid
3 Power Seats, Rear Defog, Heated Seats
4 High Blower, Hazard Flasher,
Stoplamps, Power Mirror, Door Locks
5 Ignition Switch, BTSI, Stoplamps,
ABS, Turn Signals, Cluster, Air Bag,
DRL Module
6 Cooling Fan
7 Retained Accessory Power, Keyless
Entry, Data Link, Heating Ventilation
Air Conditioning Head, Cluster, Radio,
Auxiliary Power (Power Drop),
Cigarette Lighter
8 Ignition Switch, Wipers, Radio,
Steering Wheel Controls, Body
Control Module, Auxiliary Power
(Power Drop), Power Windows,
Sunroof, Heating Ventilation Air
Conditioning Controls, Daytime
Running Lamps, Rear Defog Relay