Buick Century (2002 – 2003) – fuse box diagram

Year of production:  2002, 2003

Instrument Panel Fuse Block

Some fuses are located in a fuse block on the passenger’s side of the instrument panel.

Buick Century - wiring diagram - fuse box diagram - instrument panel
Buick Century – wiring diagram – fuse box diagram – instrument panel
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 Remote Radio Premium Sound
POWER MIRRORS Power Mirrors
Blank Not Used
INT/ILLUM Panel Dimming
Blank Not Used
IGN 0: CLSTR,  CM & 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
INADV POWER BUS Retained Accessory Power
DOOR LOCKS Door Locks
TRAP ALERT Trap Alert
TAIL LAMPS, LIC LAMPS Taillamps, License Plate 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)
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, CLUSTER Crank Signal, Body Control Module, Cluster, Powertrain Control Module
HVAC Ignition Signal, Heating, Ventilation, and Air Conditioning Control Head
BTSI PARK LOCK Shifter Lock Solenoid
AIR BAG Air Bag
BCM PWR Body Control Module
HAZARD Hazard Warning Flashers
LH HEATED SEAT Driver’s Heated Seat
Blank Not Used
BCM ACCY Ignition Signal: Hot in ACCESSORY and RUN, Body Control Module
Blank Not Used
LOW BLOWER Low Blower
ABS Anti-Lock Brakes
TURN SIGNALS, CORN LPS Turn Signals, Cornering Lamps
RADIO, HVAC, RFA, CLUSTER Radio, 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

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.

Buick Century – wiring diagram – fuse box diagram – engine compartment
Maxi Fuses 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

 

Mini Relays Usage
9 Cooling Fan 2
10 Cooling Fan 3
11 Starter Solenoid
12 Cooling Fan 1
13 Ignition Main
14 Not used
15 Not Used
16 Horn
17 Fog Lamps
18 Not Used
19 Fuel Pump

 

Micro Relays Usage
15 A/C Clutch
16 Horn
17 Not Used
18 Not Used
19 Fuel Pump

 

Mini Fuses Usage
20 Not Used
21 Generator
22 ECM
23 A/C Compressor Clutch
24 Cooling Fan
25 Electronic Ignition
26 Transaxle

 

Mini Relay Usage
27 Horn
28 Fuel Injector
29 Oxygen Sensor
30 Engine Emissions
31 Not Used
32 Headlamp (Right)
33 Rear Compartment Release
34 Parking Lamps
35 Fuel Pump
36 Headlamp (Left)
37 Spare
38 Spare
39 Spare
40 Spare
41 Spare
42 Spare
43 Spare
 SYMBOL Air Conditioner Compressor Clutch Diode

WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.