Diagram sections — 12 (19 total)
COOLING FAN DEFOGGERS HORN POWER ANTENNA POWER DOOR LOCKS POWER MIRRORS POWER SEATS POWER WINDOWS RADIO STARTING/CHARGING TRUNK, TAILGATE, FUEL DOOR WIPER/WASHER
COOLING FAN
2.5L 2.5L (VIN R), Cooling Fan Wiring Diagram for Buick Century Custom 1991 List of elements for 2.5L (VIN R), Cooling Fan Wiring Diagram for Buick Century Custom 1991: 23 (top left side of engine) engine coolant temperature sensor Air conditioning C-fan enable Coolant fan motor Coolant fan relay (right front of engine compt) Coolant fan relay control Coolant temp in Data link connector Diagnostic test Engine control module (right side of i/p) Fan/alt fuse 10a Fuse block (right side of i/p) Fusible link a (16ga) G114 (left rear of engine, on transaxle stud) Hot at all times Hot in run Red Rust Sensor ground System Vehicle speed sensor Vss gnd Vss in
3.3L 3.3L (VIN N), Cooling Fan Wiring Diagram for Buick Century Custom 1991 List of elements for 3.3L (VIN N), Cooling Fan Wiring Diagram for Buick Century Custom 1991: 26 (top right end of engine) engine coolant temperature sensor Air conditioning B10 C-fan enable Coolant fan motor Coolant fan relay (right front of engine compt) Coolant fan relay control Coolant temp in Data link connector Diagnostic test E12 E16 Engine control module (right side of i/p) Fan/alt fuse 10a Fuse block (right side of i/p) Fusible link a (16ga) G117 (right rear of engine, above detonation sensor) Hot at all times Hot in run Red Rust Sensor ground System Vehicle speed sensor Vss gnd Vss in
DEFOGGERS Defogger Wiring Diagram for Buick Century Custom 1991 List of elements for Defogger Wiring Diagram for Buick Century Custom 1991: 27 (buick) (buick) (olds) (olds) (olds) (buick) (right "c" pillar) C d Coupe & sedan Defogger Defogger control E d E f Fuse block (right side of i/p) G205 (right of steering column) G206 (behind center of i/p) G905 Gages fuse 10a Hot at all times Hot in run or start Hot w/ light switch in park or head Inst lp fuse 5a Nca Off On indicator Panel light Pwr acc circuit breaker 30a Timer Wagon
HORN Horn Wiring Diagram for Buick Century Custom 1991 List of elements for Horn Wiring Diagram for Buick Century Custom 1991: 16 (1989-90) (1991) (1991) (1989-90) Auto alarm module B m Convenience center (behind right side of i/p) Ctsy fuse 20a Fuse block (right side of i/p) G108 (left front of engine compt on radiator support) G109 (right front of engine compt on radiator support) Horn relay Horn switch Hot at all times L a Left horn (front lower left side of engine compt) Right horn (front lower right side of engine compt) Slip ring
POWER ANTENNA Power Antenna Wiring Diagram for Buick Century Custom 1991 List of elements for Power Antenna Wiring Diagram for Buick Century Custom 1991: 26 (1990-92) (1993) (1993) (1990-92) 10a 1995 vftc c 20a Antenna coax lead Antenna mast Antenna motor Antenna relay (behind i/p, right of i/p compartment) C1 e C2 c8 Circuit breaker Ctsy fuse Down switch Fuse block (behind right side of i/p) G206 (behind i/p, below ashtray) Hot at all times Hot in acc or run Nca Off Pnk Radio Radio fuse Solid state Up switch
POWER DOOR LOCKS Power Door Locks Wiring Diagram for Buick Century Custom 1991 List of elements for Power Door Locks Wiring Diagram for Buick Century Custom 1991: 18 4 door only Ctsy fuse 20a Door lock relay assembly (lower right side of dash) Fuse block (behind right side of i/p, except 1990 celebrity) (behind center of i/p, 1990 celebrity) G201 (lower right end of dash) Hot at all times Left door lock switch Left front door lock motor Left rear door lock motor Lock Lock relay Pwr acc circuit breaker 30a Right door lock switch Right front door lock motor Right rear door lock motor Tan Unlock Unlock relay Remote/Keyless Entry Wiring Diagram for Buick Century Custom 1991 List of elements for Remote/Keyless Entry Wiring Diagram for Buick Century Custom 1991: 45 4 door only Antenna/ reciever Battery Buick sedan & coupe only Ctsy fuse 20a Door lock Door lock relay assembly (lower right side of dash) Door unlock Driver's unlock Enable input Except F f Fog/rlc fuse 15a Fuse block (behind right side of i/p) G201 (lower right end of dash) G300 (below left front seat) Gages fuse 10a Ground Hot at all times Hot in run, bulb test, or start Ignition on input Illuminated entry Interior lights system Left door lock switch Left front door lock motor Left rear door lock motor Lock Lock relay Multi- function alarm module (convenience center) Olds sedan only Program connector Program input Pwr acc circuit breaker 30a Release solenoid Release solenoid (under luggage compt lid) Remote keyless entry (rke) module (in luggage compt, near left rear wheelhouse) Right door lock switch Right front door lock motor Right rear door lock motor Sedan and coupe only Starting circuit (park/neutral position switch) Tan Trunk, tailgate, fuel doors system Unlock Unlock relay
POWER MIRRORS Power Mirror Wiring Diagram for Buick Century Custom 1991 List of elements for Power Mirror Wiring Diagram for Buick Century Custom 1991: 20 (right kick panel) A nca Ctsy fuse 20a Down Fuse block G203 Hot at all times Left Left door mirror switch Left outside mirror Left/ right mirror motor Mirror position switch Mirror select switch Nca Nca b Nca d Nca h Right Right outside mirror Up/down m mirror motor
POWER SEATS 6-Way Power Seat Wiring Diagram for Buick Century Custom 1991 List of elements for 6-Way Power Seat Wiring Diagram for Buick Century Custom 1991: 19 1995 vftc c Back Breaker 30a Down Entire seat Forward/ back motor Front height Front height motor Front seat) Fuse block Fwd G300 (below left Hot at all times Left front seat Power seat switch Pwr/acc circuit Rear height Rear height motor Tan Recliner Wiring Diagram for Buick Century Custom 1991 List of elements for Recliner Wiring Diagram for Buick Century Custom 1991: 17 (below left front seat) 30a Capacitor "a" Fuse block Fwd G300 (below left front seat) Hot at all times Left front seat Left recliner switch Left seat recliner motor Nca Power acc circuit breaker Recline Red Right front seat Right recliner switch Right seat recliner motor
POWER WINDOWS Power Window Wiring Diagram, 2 Door for Buick Century Custom 1991 List of elements for Power Window Wiring Diagram, 2 Door for Buick Century Custom 1991: 11 (at right shroud, near center access hole) g203 Fuse block Hot in run Left window motor Master switch assembly Pnk Pnk f Right front window switch Right window motor Tan Wdo circuit breaker 30a Power Window Wiring Diagram, 4 Door for Buick Century Custom 1991 List of elements for Power Window Wiring Diagram, 4 Door for Buick Century Custom 1991: 20 C c1 F c2 Fuse block G203 (at right shroud, near center access hole) Hot in run Left front window Left front window motor Left rear window Left rear window motor Left rear window switch Master switch assembly Pnk Right front window Right front window motor Right front window switch Right rear window Right rear window motor Right rear window switch Tan Wdo circuit breaker 30a
RADIO Radio Wiring Diagrams for Buick Century Custom 1991 List of elements for Radio Wiring Diagrams for Buick Century Custom 1991: 51 1995 vftc c Acc b+ in Acc b+ out Antenna Antenna input Bat Bat power Bat power input Cancel cam (top of steering column) Coaxial cable Ctsy fuse 20a Data bus Data in Data line Data out Fuse block (behind right side of i/p, behind i/p compartment door) G206 (center of i/p) Ground Ground in Ground out Groung Hot at all times Hot in accy or run Ignition pwr input Illumination Illumination input Interior lights system Left front speaker Left rear speaker Lights on input Lt frt spkr Lt rr spkr Nca On output Pnk Power antenna system Radio Radio fuse 10a Receivers Right front speaker Right rear speaker Rt frt spkr Rt rr spkr Spring loaded Switch and electronic module steering wheel control head (in steering wheel) Tan Translator module (in steering column) Transmitters Turn signal switch Vcc +5 W/ steering wheel controls
STARTING/CHARGING Charging Wiring Diagram for Buick Century Custom 1991 List of elements for Charging Wiring Diagram for Buick Century Custom 1991: 17 (behind right side of i/p, left of i/p com- part- ment) (buick vin r), olds (buick vin t) (lower left front of engine, on transaxle stud) g110 g114 (left rear of engine) (olds) Alternator Bat Battery Bulb test or start Charge indicator Fan/elec fuse 10a Fuse block G108 (left front of engine compart- ment, radiator support) Gages fuse 10a Hot in run Hot in run, Instrument cluster Red Starting Wiring Diagram for Buick Century Custom 1991 List of elements for Starting Wiring Diagram for Buick Century Custom 1991: 28 (1990) a (1991-93) (buick & olds) (buick & oldsmobile) (pont & chev vin r) (left front of engine compartment, radiator support) (left rear of engine) (pont & Accy Battery Bulb test C2 (1990) C206 C206 (1991-93) Chev vin t) D2 d Fusible link c G108 G110 (lower left front of engine, on transaxle stud) G114 Ignition switch Lock Off Park/ neutral position switch Red Run Start Starter motor Starter solenoid (lower front of engine)
TRUNK, TAILGATE, FUEL DOOR Trunk, Tailgate, Fuel Door Wiring Diagrams for Buick Century Custom 1991 List of elements for Trunk, Tailgate, Fuel Door Wiring Diagrams for Buick Century Custom 1991: 18 (coupe/ sedan) (station wagon) 1995 vftc c Ctsy fuse 20a Door locks system Fuse block (right side of i/p) G202 (behind i/p, below ashtray) Hot in run Hot in run, bulb test or start Pnk Rear wiper control switch Release switch Release relay (right side of i/p, above fuse block) Release solenoid (on luggage compartment lid, near lock) Transaxle position switch (top left rear of transaxle) Turn flasher Turn-b/u fuse 15a Wdo circuit breaker 30a
WIPER/WASHER 2-Speed Wiper/Washer Wiring Diagram for Buick Century Custom 1991 List of elements for 2-Speed Wiper/Washer Wiring Diagram for Buick Century Custom 1991: 18 (left side of engine) (vin r) g112 (right rear of engine) g117 (vin n) Cover assembly Fuse block Hot in accy or run Mechanical arm Mist Nca Off Park switch Pnk Red Washer motor Washer switch Wiper motor assembly Wiper switch Wiper switch assembly Wpr fuse 25 amp Interval Wiper/Washer Wiring Diagram for Buick Century Custom 1991 List of elements for Interval Wiper/Washer Wiring Diagram for Buick Century Custom 1991: 23 (left side of engine) (vin n) (vin r) g112 Cover assembly Fuse block G117 (right rear of engine) Hot in accy or run Mechanical arm Mist Nca Off Park switch Pnk Pulse Pulse delay Red Timer Washer motor Washer switch Wiper motor assembly Wiper switch Wiper/ switch assembly Wpr fuse 25a Rear Wiper/Washer Wiring Diagram for Buick Century Custom 1991 List of elements for Rear Wiper/Washer Wiring Diagram for Buick Century Custom 1991: 23 (pont) (chevy) (buick) (pont) (chevy, buick) Auto- park module B c Fuse block G109 (on radiator support, behind right headlights) G412 (top of tailgate, near rear wiper module) Hot at all times Hot in run Off Park Pnk Pwr acc circuit breaker 30a Rear washer pump Rear wiper module Rear wiper motor Rear wiper/ washer switch Run Tailgate lock switch (in lower center of tailgate) W b a Wash Wdo circuit breaker 30a Wipe
