POWER DISTRIBUTION – Buick Century Custom 2003 – SYSTEM WIRING DIAGRAMS

POWER DISTRIBUTION

Power Distribution Wiring Diagram (1 of 3) for Buick Century Custom 2003

List of elements for Power Distribution Wiring Diagram (1 of 3) for Buick Century Custom 2003:

• (body harn, 6.5 cm from rr speaker breakout) s440
• (century)
• (cj3) (cj2)
• (console harn, inside console) 20 cm from c240) s336
• (i/p harness, right side of steering column, approximately 19 cm (8 in) from radio breakout
• (regal)
• 20a
• 60a
• A/c clutch fuse 23 10a
• A/c clutch relay 15
• Abs fuse 1
• Accessory power outlet
• Audio amplifier (u85)
• B (century) (regal) c
• Back-up lamp relay (regal)
• Batt 1 fuse 7 60a
• Batt 2 fuse 4 60a
• Batt 3 fuse 3 60a
• Battery
• Bcm pwr fuse 10a
• Blower motor control processor
• Blower motor resistor assembly
• Body control module (bcm)
• C2 l c12
• C201
• C206
• Cigar lighter
• Cigar ltr fuse
• Cj2
• Cj3
• Cool fan 1 fuse 6 25a
• Cool fan 1 relay 12
• Cool fan 2 fuse 24 15a
• Cool fan 2 relay 9
• Cool fan 3 relay
• Crank fuse 2 40a
• Crank relay 11
• Data link connector (dlc)
• Door locks fuse 20a
• Driver heated seat control module
• Driver seat adjuster switch
• E10
• E11
• E12
• Ecm fuse 22 10a
• Electronic brake control module (ebcm)
• F/pmp fuse 35 15a
• F/pmp relay 19
• F/pmp spd cont relay 18 (l67 w/ t96)
• Fog lamp relay 17
• Fog lp fuse 31 10a
• From batt 2 fuse 4 (diagram 1 of 3)
• From horn a fuse 27 (diagram 1 of 3)
• Fuse block- i/p
• Fuse block- underhood
• Fuse block: i/p
• Fusible link (10 ga- rust)
• G200 (behind right side of dash compt)
• Gen fuse 21 10a
• Generator
• Hazard fuse 15a
• Hdlp l fuse 36 15a
• Hdlp r fuse 32 15a
• Headlamp relay
• Headlamp switch
• High blower fuse 30a
• Horn fuse 27 15a
• Horn relay 16
• Hvac control module
• Inadv power bus fuse 15a
• Instrument panel cluster (ipc)
• L heated seat fuse 15a
• Left headlamp
• Lp park fuse 34 20a
• Nca
• Outside rearview mirror switch
• Park lamp relay
• Park/ neutral position switch (century)
• Passenger front heated seat control module
• Passenger front seat adjuster switch
• Power drop connector
• Power mirrors fuse 2a
• Power seat circuit breaker 30a
• Powertrain control module (pcm)
• R heated seat fuse 15a
• R/cmpt rel fuse 33 7.5a
• Radio
• Radio prem sound fuse 15a
• Rdo,hvac rfa,cluster data link fuse 15a
• Rear compartment lid release relay
• Rear defog circuit breaker 30a
• Rear window defogger relay
• Red
• Remote control door lock receiver (rcdlr)
• Right headlamp
• S202
• S230
• S269 (i/p harn, near blower motor, 13 cm from door lock rly breakout)
• S275
• S335 (regal) (century) s334
• Starter
• Stop lamps fuse 15a
• Stoplamp switch
• To hdlp l fuse 36 (diagram 1 of 3)
• To high blower fuse (diagram 1 of 3)
• To ign 2 fuse 8 (diagram 2 of 3)
• To onstar fuse, diagram (2 of 3)
• To retained accessory power (rap) relay (diagram 2 of 3)
• Turn signal/ hazard flasher module

Power Distribution Wiring Diagram (2 of 3) for Buick Century Custom 2003

List of elements for Power Distribution Wiring Diagram (2 of 3) for Buick Century Custom 2003:

• (body harn, on tunnel above front seats, 10 cm from c250 breakout) s323
• (body harn, under left rear seat, 7 cm from c405 breakout)
• (cj2)
• (cj2) (cj3)
• (i/p harn, behind right side of dash, 4 cm from blower motor control module)
• (i/p harn, near blower motor, 4 cm from door lock relay breakout)
• (i/p harn, near steering column, 4 cm from c201 breakout)
• (i/p harn, right side of steering column, 18 cm from g200 breakout)
• (not used)
• (regal)
• (w/rap)
• A/t shift lock control switch
• A10
• Acc
• B10
• Bcm acc fuse 10a
• Body control module (bcm)
• Body control module (bcm) (below left side of dash)
• C201
• C206
• C5 c (cj3)
• Crank signal, bcm, cluster fuse 10a
• Cruise control module
• Cruise control release switch
• Cruise control switch
• Cruise fuse 10a
• Driver seat heater switch
• From gen d fuse 21 (diagram 1 of 3)
• From ignition switch (diagram 2 of 3)
• From inadv power bus fuse (diagram 1 of 3)
• From r heated seat fuse diagram (1 of 3)
• Fuse block, under- hood c1
• Fuse block- i/p
• Fuse block- underhood
• Fuse- block under- hood
• Heater- a/c control (cj3)
• Hvac control module
• Hvac fuse 10a
• I/p harn, right side of steering column, 13 cm from instrument cluster breakout)
• Ign 0,cluster, pcm & bcm fuse 10a
• Ign1 fuse 5 30a
• Ign2 fuse 8 60a
• Ignition switch
• Inflatable restraint steering wheel module coil
• Inside rearview mirror
• Instrument panel cluster (ipc)
• Left air temperature actuator
• Left front window switch
• Left radio control switch
• Lock
• Low blower fuse 20a
• Nca
• Off
• Onstar fuse 15a
• Park lock fuse (regal) 10a
• Passenger seat heater switch
• Pnk
• Power drop connector
• Power drop fuse 10a
• Powertrain control module (pcm)
• Pwr windows pwr sunroof circuit breaker 30a
• Radio
• Radio fuse (w/o rap) 2a
• Radio fuse 2a
• Rear window defogger relay
• Red
• Retained accessory power (rap) relay
• Right air temperature actuator
• Run
• S220
• S234
• S240
• S249
• S263
• S270
• S410
• Start
• Sunroof module
• To crank signal fuse (diagram 2 of 3)
• To ign main relay 13 (diagram 3 of 3)
• To low blower fuse (diagram 2 of 3)
• To s228 (diagram 3 of 3)
• Vacuum control assembly (cj2)
• Vehicle communi- cations interface module
• W/ electric o/s mirrors
• W/ fold away mirrors
• W/ rap
• W/ sun- roof
• W/o rap
• Wind- shield wiper/ washer switch
• Windshield wiper motor
• Wiper fuse 25a

Power Distribution Wiring Diagram (3 of 3) for Buick Century Custom 2003

List of elements for Power Distribution Wiring Diagram (3 of 3) for Buick Century Custom 2003:

• (3.1l)
• (3.1l: fuel injector wiring harn, 2 cm from fule injecto 2 breakout) (3.8l: eng wiring harn, top left of engine, 6 cm from c110 breakout)
• (3.8l)
• (i/p harness, right side of dash)
• A/c clutch relay 15
• A/t shift control switch (regal)
• A11
• Abs fuse 10a
• Air bag fuse 10a
• Automatic transaxle
• B12
• Body control module (bcm)
• Brake- to-shift relay
• Btsi park lock fuse 10a
• C113
• Cluster fuse 10a
• Crank relay
• Electronic brake control module (ebcm)
• Elek ign fuse 25 15a
• Eng emis fuse 30 10a
• Evaporative emissions (evap) canister purge solenoid valve
• Evaporative emissions (evap) canister vent solenoid valve
• F/inj fuse 28 15a
• From ign 1 fuse 5 e (diagram 2 0f 3)
• From ignition switch (diagram 2 of 3)
• Fuel injector
• Fuse block- i/p
• Fuse block- underhood
• G113 (left of starter, on trans- axle stud)
• Heated oxygen sensor 1 (ho2s 1)
• Heated oxygen sensor 1 (ho2s 2)
• Ign main relay 13
• Ignition control module (icm)
• Inflatable restraint sensing & diagnostic module
• Instrument panel cluster (ipc)
• Mass airflow (maf) sensor
• Nca
• Oxy sen fuse 29 15a
• Pcm,bcm u/h relay fuse 10a
• Pnk
• Powertrain control module (pcm)
• Regal vin k
• S106
• S109
• S228
• Secondary air injection bypass valve solenoid
• Stoplamp switch
• Stoplamp switch (century)
• Supercharger bypass valve (3.8l)
• Trans fuse 26 10a
• Turn signal hazard flasher module
• Turn signals, corn lps fuse 10a