Buick Century - 2005 Fuse Box Diagram

Buick Century - 2005 Fuse Box Diagram

Theft-Deterrent Systems
Vehicle theft is big business, especially in some cities.
Although your vehicle has a number of theft-deterrent
features, we know that nothing we put on it can make it
impossible to steal. However, there are ways you
can help.
PASS-Key
®
II
The vehicle is equipped
with the PASS-Key
®
II
(Personalized Automotive
Security System)
theft-deterrent system.
PASS-Key
®
II is a passive
theft-deterrent system.
It works when the ignition
key is inserted or
removed from the ignition.
PASS-Key
®
II uses a resistor pellet in the ignition key
that matches a decoder in the vehicle.
When the PASS-Key
®
II system senses that the wrong
key has been inserted into the ignition, it shuts down
the vehicle’s starter and fuel systems. The starter will not
work and fuel will not go to the engine for about
three minutes. If someone tries to start the vehicle again
with the wrong key, or uses another incorrect key
during this time, the vehicle will not start. This
discourages someone from randomly trying keys with
different resistor pellets in an attempt to make a match.
The ignition key must be clean and dry before it is
inserted in the ignition or the engine may not start. If the
engine does not start and the SECURITY warning
light on the instrument panel is flashing, the key may be
dirty or wet. Turn the ignition off.
Clean and dry the key. Wait about three minutes and try
again. If the vehicle still does not start, the ignition
key may be faulty. Wait about three more minutes and
try a spare ignition key. At this time, you may also
want to check the fuse. See
Fuses and Circuit Breakers
on page 5-91
for information on fuse location. If the
starter will not work with the spare key, the vehicle
needs service. See your dealer or a locksmith who can
service the PASS-Key
®
II.
2-16
The main components of the instrument panel are the following:
A. Exterior Lamps Control. See
Exterior Lamps on
page 3-13
.
B. Turn Signal/Multifunction Lever. See
Turn
Signal/Multifunction Lever on page 3-7
.
C. Instrument Panel Cluster. See
Instrument Panel
Cluster on page 3-29
.
D. Hazard Warning Flasher Button. See
Hazard
Warning Flashers on page 3-6
.
E. Audio Steering Wheel Controls. See
Audio Steering
Wheel Controls on page 3-63
.
F. Gear Shift Lever. See
Automatic Transaxle
Operation on page 2-21
.
G. Air Outlets. See
Outlet Adjustment on page 3-26
.
H. Side Window Defogger Outlet.
I. Hood Release. See
Hood Release on page 5-11
.
J. Tilt Wheel Lever. See
Tilt Wheel on page 3-6
.
K. Horn. See
Horn on page 3-6
.
L. Audio System. See
Audio System(s) on page 3-44
.
M. Ashtray. See
Ashtrays and Cigarette Lighter on
page 3-18
.
N. Climate Control. See
Dual Climate Control System
on page 3-18
.
O. Glove Box. See
Glove Box on page 2-33
.
P. Instrument Panel Fuse Block. See
Fuses and Circuit
Breakers on page 5-91
.
3-5
Turn Signal/Multifunction Lever
The multifunction lever located on the left side of the
steering column includes the following:
Turn and Lane-Change Signals
Headlamp High/Low-Beam Changer
Flash-to-Pass
Windshield Wipers
Windshield Washer
Cruise Control
Turn and Lane-Change Signals
To signal a turn, move the turn signal/multifunction lever
up or down. The lever returns to its original position
when the turn is completed.
An arrow on the instrument
panel cluster will flash in
the direction of the
turn or lane change.
To signal a lane change, raise or lower the turn signal/
multifunction lever until the arrow starts to flash. Hold it
there until the lane change is completed. The lever will
return to its original position when released.
Arrows that flash rapidly when signaling for a turn or
lane change, or that fail to work, may indicate a
burned-out signal bulb or fuse. Other drivers will not see
the signal. See
Front Turn Signal and Parking Lamps
on page 5-48
and
Taillamps, Turn Signal, and
Stoplamps on page 5-50
for turn signal bulb replacement
procedures. Also see
Fuses and Circuit Breakers on
page 5-91
for location of fuses.
A chime will sound if the turn signal is left on for more
than 3/4 mile (1.2 km).
3-7
Ashtrays and Cigarette Lighter
The center front ashtray is located below the instrument
panel comfort controls.
To remove the ashtray, open the storage door.
Then open the ashtray lid, lift up and pull it out.
Notice:
Holding a cigarette lighter in while it is
heating will not allow the lighter to back away from
the heating element when it is hot. Damage from
overheating may occur to the lighter or heating
element, or a fuse could be blown. Do not hold a
cigarette lighter in while it is heating.
Push the lighter to use it. When the heating element is
hot, the lighter will pop back out by itself.
Notice:
If you put papers or other flammable items
in the ashtray, hot cigarettes or other smoking
materials could ignite them and possibly damage
your vehicle. Never put flammable items in
the ashtray.
Climate Controls
Dual Climate Control System
Your vehicle may have this climate control system.
The heating, cooling, and ventilation for the vehicle can
be controlled with it.
Manual Operation
To change the current mode, select one of the following
settings on the right knob.
MAX (Maximum Air-Conditioning):
This mode
recirculates much of the air inside the vehicle and sends it
through the instrument panel outlets. The air-conditioning
compressor will run automatically in this setting unless
the outside temperature is below 40°F (4°C).
3-18
Oil Pressure Light
If the vehicle has an oil
problem, this light may
stay on after the engine
is started, or come
on while you are driving.
This light indicates that oil is not going through the
engine quickly enough to keep it lubricated.
The engine could be low on oil or could have some
other oil problem. Have it fixed right away.
The oil light could also come on in the
following situations:
The light will come on briefly when the ignition is
turned on to show that it is working properly. If it
does not come on with the ignition on, there may
be a problem with the fuse or bulb. Have it
fixed right away.
Sometimes when the engine is idling at a stop,
the light may blink on and off. This is normal.
{
CAUTION:
Do not 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.
Notice:
Lack of proper engine oil maintenance
may damage the engine. The repairs would not be
covered by your warranty. Always follow the
maintenance schedule in this manual for changing
engine oil.
Change Engine Oil Light
The CHANGE OIL SOON
light should come on
briefly as a bulb check
when the engine is started.
If the light does not
come on, have it serviced.
If the CHANGE OIL SOON light comes on and stays on
after the engine is started, have the oil changed.
3-40
A. Windshield Washer Fluid Reservoir. See “Adding
Washer Fluid” under
Windshield Washer Fluid
on page 5-35
.
B. Battery. See
Battery on page 5-39
.
C. Underhood Fuse Block. See
Underhood Fuse Block
on page 5-94
.
D. Remote Positive (+) Battery Terminal. See
Jump
Starting on page 5-40
.
E. Radiator Pressure Cap. See
Radiator Pressure Cap
on page 5-24
.
F. Engine Coolant Recovery Tank. See
Cooling System
on page 5-27
.
G. Power Steering Fluid Reservoir. See
Power Steering
Fluid on page 5-34
.
H. Electric Engine Cooling Fan. See
Cooling System on
page 5-27
.
I. Engine Oil Fill Cap. See “When to Add Engine Oil”
under
Engine Oil on page 5-13
.
J. Engine Oil Dipstick. See “Checking Engine Oil”
under
Engine Oil on page 5-13
.
K. Automatic Transaxle Fluid Dipstick. See “Checking
the Fluid Level” under
Automatic Transaxle Fluid
on page 5-19
.
L. Brake Fluid Reservoir. See “Brake Fluid” under
Brakes on page 5-36
.
M. Engine Air Cleaner/Filter. See
Engine Air
Cleaner/Filter on page 5-18
.
Engine Oil
Checking Engine Oil
It is a good idea to check your engine oil every time you
get fuel. In order to get an accurate reading, the oil
must be warm and the vehicle must be on level ground.
The engine oil dipstick handle is a yellow loop.
See
Engine Compartment Overview on page 5-12
for
the location of the engine oil dipstick.
Turn off the engine and give the oil several minutes to
drain back into the oil pan. If you don’t, the oil
dipstick might not show the actual level.
Pull out the dipstick and clean it with a paper towel or
cloth, then push it back in all the way. Remove it again,
keeping the tip down, and check the level.
5-13
The system normally takes 15 to 20 minutes of driving
time in each of three speed ranges to determine
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 the storage of the
tire inflation information is complete, the LOW TIRE
light will come on the instrument panel after two to
eight minutes if one tire is inflated 12 psi (83 kPa) less
than 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 inflation differences at speeds greater
than 70 mph (110 km/h).
The tire inflation monitor system will not alert you if the
pressure in more than one tire is low, if the system
is not properly calibrated, or if the vehicle is moving
faster than 70 mph (110 km/h).
The LOW TIRE light will stay on while the ignition is on,
until the system is reset.
Do not reset the tire inflation monitor system without
first correcting the cause of the problem and checking
and adjusting the pressure in all four tires. If the
system is reset when the tire pressures are incorrect,
it will not function properly and may not alert you when a
tire is low.
Any time a tire’s pressure is adjusted, the tires are
rotated, or one or more tires is repaired or replaced,
the tire inflation monitor system will need to be
reset. The system also needs to be reset when new
tires are purchased and if the vehicle’s battery has
been disconnected.
To reset the system, do the following:
1. Turn the ignition to RUN.
2. Remove the passenger’s side instrument panel
cover to access the fuse block.
3. Press and hold the RESET button in the fuse block
for about five seconds.
The LOW TIRE light will come on and flash three
times. Then it will go off. If the light does not go off,
see your dealer for service.
5-62
Headlamp Wiring
The headlamp wiring is protected by a circuit breaker in
the underhood fuse block. An electrical overload will
cause the headlamps to go on and off, or in some cases
to remain off. If this happens, have the headlamp
system checked right away.
Windshield Wiper Fuses
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.
Fuses and Circuit Breakers
The wiring circuits in the vehicle are protected from
short circuits by a combination of fuses, circuit breakers
and in the fuse block wiring 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
a bad fuse is replaced with a new one of the identical
size and rating.
Instrument Panel Fuse Block
Some fuses are located
in a fuse block on the
passenger’s side of
the instrument panel.
Pull off the cover
labeled FUSES to
expose the fuse block.
5-91
Circuit
Breakers
Usage
TIRE RESET
Tire Inflation Monitor Reset Button
PWR/WNDW
PWR S/ROOF
Power Windows, Power Sunroof
R/DEFOG
Rear Window Defogger
PWR/ SEAT
Power Seat
Blank
Not Used
Fuses
Usage
PRK/LCK
Ignition Key Solenoid
Blank
Not Used
Blank
Not Used
PCM, BCM,
U/H
Ignition Signal: Hot in Run and Start,
Powertrain Control Module, Body
Control Module, Underhood Relay
RADIO PREM.
SOUND
Not Used
PWR MIR
Power Mirrors
Blank
Not Used
INT/ILLUM
Panel Dimming
Blank
Not Used
IGN 0: CLSTR,
PCM & BCM
Ignition Signal: Hot in Run,
Unlock and Start; Cluster,
Powertrain Control Module,
Body Control Module
Blank
Not Used
Blank
Not Used
Blank
Not Used
ACCY PWR
BUS
Interior Lamps
DR/ LCK
Door Locks
5-92
Fuses
Usage
Blank
Not Used
R/LAMPS
Taillamps, License Plate Lamps
Blank
Not Used
Blank
Not Used
CRUISE
Cruise Control
Blank
Not Used
CLSTR
Instrument Panel Cluster
LTR
Cigarette Lighter
STOP LAMPS
Stoplamps
ONSTAR
OnStar
®
PRK/LGHT
Parking Lamps
Blank
Not Used
CRNK SIG,
BCM, CLSTR
Crank Signal, Body Control Module,
Cluster, Powertrain Control Module
HVAC
Ignition Signal, Heating, Ventilation,
and Air Conditioning Control Head
BTSI (REGAL)
Not Used
AIR BAG
Air Bag
Fuses
Usage
BCM PWR
Body Control Module
HAZARD
Hazard Warning Flashers
LH HTD SEAT
Not Used
Blank
Not Used
BCM ACCY
Ignition Signal: Hot in ACCESSORY
and RUN, Body Control Module
Blank
Not Used
LOW BLWR
Low Blower
ABS
Anti-Lock Brakes
TRN SIG
Turn Signals, Cornering Lamps
RADIO, HVAC,
RFA, CLSTR
ALDL
Radio, Heating Ventilation and
Air Conditioning Head; Remote
Keyless Entry, Cluster
HI BLWR
High Blower
RH HTD SEAT
Not Used
STR/WHL/
CNTRL
Audio Steering Wheel Controls
WPR
Windshield Wipers
5-93
Underhood Fuse Block
Some fuses and relays are located in the underhood
fuse block on the passenger’s side of the vehicle in the
engine compartment. See
Engine Compartment
Overview on page 5-12
for more information on location.
Fuses
Usage
1
Anti-Lock Brake System
2
Starter Solenoid
3
Power Seat, Rear Window Defogger
4
High Blower, Hazard Flasher,
Stoplamps, Power Mirror,
Door Locks
Fuses
Usage
5
Ignition Switch, Stoplamps,
Anti-Lock Brake System, Turn
Signals, Cluster, Air Bag, Daytime
Running Lamps Module
6
Cooling Fan
7
Retained Accessory Power,
Remote Keyless Entry, Data Link,
Heating, Ventilation, and Air
Conditioning Head; Cluster, Radio,
Cigarette Lighter
8
Ignition Switch, Wipers, Audio
Steering Wheel Controls, Body
Control Module, Power Windows,
Sunroof, Heating, Ventilation, and
Air Conditioning Controls; Daytime
Running Lamps, Rear Window
Defogger Relay
Relays
Usage
9
Cooling Fan 2
10
Cooling Fan 3
11
Starter Solenoid
12
Cooling Fan 1
13
Ignition Main
14
Air Pump (Optional)
5-94
Relays
Usage
15
Not Used
16
Horn
17
Fog Lamps
18
Not Used
19
Fuel Pump
Fuses
Usage
20
Not Used
21
Generator
22
Engine Control Module
23
Air Conditioner Compressor Clutch
24
Cooling Fan
25
Electronic Ignition
26
Transaxle
27
Horn
28
Fuel Injector
29
Oxygen Sensor
Fuses
Usage
30
Engine Emissions
31
Fog Lamps
32
Right Headlamp
33
Rear Compartment Release
34
Parking Lamps
35
Fuel Pump
36
Left Headlamp
37
Not Used
38
Not Used
39
Not Used
40
Not Used
41
Not Used
42
Not Used
43
Not Used
§
Air Conditioner Compressor
Clutch Diode
5-95