Buick Century (VI; 2002 – 2003) – fuse and relay box diagram
Year of production: 2002, 2003
This article covers the Buick Century. It includes fuse box diagrams for the 6th generation 2002 and 2003 models, provides details on the location of the fuse panels inside the vehicle, and explains the function and layout of each fuse.
Passenger compartment
Fuse box location
The fuse box is located on right side of the instrument panel, behind the cover.
Fuse box diagram
Assignment of the fuses in the passenger compartment
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 |
Engine compartment
Fuse box location
Some fuses and relays are located in the underhood fuse block on the passenger’s side of the vehicle in the engine compartment.
Fuse box diagram
Assignment of the fuses in the 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.