Diagram sections — 28 (47 total)
AIR CONDITIONING ANTI-LOCK BRAKES COMPUTER DATA LINES COOLING FAN CRUISE CONTROL DEFOGGERS ENGINE PERFORMANCE EXTERIOR LIGHTS GROUND DISTRIBUTION HEADLIGHTS HORN INSTRUMENT CLUSTER INTERIOR LIGHTS PASSIVE RESTRAINTS POWER ANTENNA POWER DISTRIBUTION POWER DOOR LOCKS POWER MIRRORS POWER SEATS POWER WINDOWS RADIO SHIFT INTERLOCKS STARTING/CHARGING SUPPLEMENTAL RESTRAINTS TRANSMISSION TRUNK, TAILGATE, FUEL DOOR WARNING SYSTEMS WIPER/WASHER
AIR CONDITIONING Air Conditioning Wiring Diagrams for Buick Century Custom 1995 List of elements for Air Conditioning Wiring Diagrams for Buick Century Custom 1995: 48 (buick) (olds) +5v A/c clutch diode A/c compressor clutch A/c compressor control relay (right front of engine compartment on relay bracket) A/c pressure sensor (right front of engine, on compressor) A/c request B12 Bi-lv Blower motor Blower relay (right front of engine compartment) Blower resistors (right rear of engine compartment) Blower switch C10 C11 C2 c2 D11 D12 Def E d Engine coolant temperature sensor (left side of engine) Engine/ a/c in line fuse 10a (behind right side of i/p, taped to harness near fuse block) Fuse block G129 (on transaxle stud) Heater-a/c control assembly Hot at all times Hot in accy or run Hot in run, bulb test or start Htr Htr-a/c fuse 20a L4 vin 4 Max Mode switch Norm Off Pnk Powertrain control module (behind right side of i/p) Primary coolant fan Primary coolant fan relay (right front of engine compartment on relay bracket) Pusher coolant fan Pusher coolant fan relay (behind right side of radiator) Red Relay control Sensor input Sensor return Tan V6 vin m Vent
ANTI-LOCK BRAKES Anti-lock Brake Wiring Diagrams (1 of 2) for Buick Century Custom 1995 List of elements for Anti-lock Brake Wiring Diagrams (1 of 2) for Buick Century Custom 1995: 49 15a Abs hydraulic modulator (left shock tower) Abs ind ctrl Battery Brake ind ctrl Brake input C 1995 vftc Data line E10 E11 Ecbm independent lamp driver module (left side of i/p, left Electronic brake control module (ebcm) (behind right front of i/p, above powertrain control module) Electronic brake control relay (behind right front shock tower, on firewall) F10 F11 F12 Fan/alt fuse 10a Fuse block Fuse link g (14 ga-rust) (front of engine compt, near battery) G108 (left front of engine compt, on radiator support) G206 (right shroud, near center access hole) Gages fuse 10a Ground Hot at all times Hot in accy or run Hot in run, bulb test or start Ignition/run input Left front abs solenoid Left front motor Left front sol ctrl Left front wheel speed sensor Left rear wheel speed sensor Low traction ind ctrl Multi-function alarm in-line fuse (behind right side of i/p, taped on harness near fuse block) Of steering column) Pnk Rear motor Red Relay contrl Right front abs solenoid Right front motor Right front sol ctrl Right front wheel speed sensor Right rear wheel speed sensor Solid state Stop lamp brake switch (on brake pedal support) Stop/haz fuse 20a Switched ignition Tan Anti-lock Brake Wiring Diagrams (2 of 2) for Buick Century Custom 1995 List of elements for Anti-lock Brake Wiring Diagrams (2 of 2) for Buick Century Custom 1995: 40 12c8 1c1 1c2 1c5 1c6 1c7 1c9 2c10 2c11 2c14 2c16 2c7 3d12 A11 Abs motor pack Anti-lock brake ind Asb hydraulic modulator (left shock tower, part of brake reservoir) Brake ind Buick C 1995 vftc Data line Data link conn (dlc) (below left side of i/p, near steering column) Diagnostic energy reserve module (derm) (behind hvac control head) Instrument cluster L4 vin d Left front motor Left front wheel speed sensor Left rear wheel speed sensor Low traction ind Nca Oldsmobile Pnk Powertrain control module (pcm) (behind right side of i/p) Rear motor Red Right front motor Right front wheel speed sensor Right rear wheel speed sensor Tan V6 vin m
COMPUTER DATA LINES Data Link Connector Wiring Diagram for Buick Century Custom 1995 List of elements for Data Link Connector Wiring Diagram for Buick Century Custom 1995: 17 (behind right side of i/p) (below left side of i/p, near steering column) (left front of engine, on transmission stud) (vin 4) (vin m) A11 C 1995 vftc C3 c1 D12 c2 Data link connector Diagnostic energy reserve module (behind hvac control head) Diagnostic request input E11 Electronic brake control module (upper right front of i/p, above pcm) G112 Powertrain control module Serial data line Tan
COOLING FAN Cooling Fan Wiring Diagram for Buick Century Custom 1995 List of elements for Cooling Fan Wiring Diagram for Buick Century Custom 1995: 18 C10 Engine coolant temperature sensor (left side of engine) Engine/ a/c in line fuse 10a (behind right side of dash, near upper left rear of glove box) G129 (on transaxle stud) Hot at all times Hot in run, bulb test or start L4 vin 4 Pnk Powertrain control module (behind right side of i/p) Primary coolant fan Primary coolant fan relay (right front of engine compartment on relay bracket) Pusher coolant fan Pusher coolant fan relay (behind right side of radiator) Red Relay control Sensor input Sensor return V6 vin m
CRUISE CONTROL Cruise Control Wiring Diagram for Buick Century Custom 1995 List of elements for Cruise Control Wiring Diagram for Buick Century Custom 1995: 55 (c1)c3 (c1)c4 (c1)c9 (c1)d11 (c2)a5 (c2)b8 (c3)d10 (c3)d13 (c3)d14 (l4 vin 4) (v6 vin m) 4000 pulses/mile Automatic transaxle (lower left side of engine compt) Brake input Brake sw output Buick C 1995 vftc C13 Cruise control module (left front shock tower) Cruise ind Cruise on/off input Cruise status Cruise switch Fan/alt fuse 10a Fuse block G108 (left front of engine compt, on radiator support) Gages fuse 10a Ground Hot at all times Hot in accy Hot in run, bulb test or start Ignition input Instrument cluster Instrument cluster (buick century only) Multi-function alarm module Multi-function lever Nca Off Oldsmobile Or run Pnk Powertrain control module (pcm) (behind right side of i/p) R/a Resume/accel input Set sw Set/coast input Stop/haz fuse 20a Stoplamp switch (on brake pedal support) Stoplamp tcc/cruise brake switch (on brake pedal support) Torque converter clutch solenoid Vehicle speed enable Vehicle speed input Vehicle speed sensor (vss) (lower right rear of engine, on transaxle) Vss return Vss signal
DEFOGGERS Defogger Wiring Diagram for Buick Century Custom 1995 List of elements for Defogger Wiring Diagram for Buick Century Custom 1995: 20 (bottom of right "c" pillar) g905 (buick) (olds) C 1995 vftc fuse block (behind right side of i/p) G206 (center of i/p) Gages fuse 10a Hot at all times Hot in run, bulb test or start Hot with headlights on Inst lps fuse 5a On indicator Panel light Pnk Pwr acc circuit breaker 30a Rear defogger Rear defogger control Rear defogger switch Sedan Timer Wagon
ENGINE PERFORMANCE
2.2L 2.2L (VIN 4), Engine Performance Wiring Diagrams (1 of 2) for Buick Century Custom 1995 List of elements for 2.2L (VIN 4), Engine Performance Wiring Diagrams (1 of 2) for Buick Century Custom 1995: 72 5 volts ref A/c on in A/c sensor (right front of engine compt) A/c sensor in A10 A11 A12 B10 B11 B12 Battery Brake sw output/tcc C 1995 vftc C10 C11 C12 C13 C14 C15 C16 Conn c1 Conn c2 Coolant temp sensor (left side of engine) Crank sensor feed Crank sensor in Crank sensor rtn Crank shaft position sensor (lower right side of engine) Cruise control system Cruise ind light output D10 D11 D12 D13 D14 D15 D16 Ect sensor in Engine control module (ecm) (behind right side of i/p, near shroud) Fuel injector #1 Fuel injector #2 Fuel injector #3 Fuel injector #4 Fuel pump in-line fuse 15a Fuel pump relay ctrl Fuse block Fusible link (20 ga-rust) G112 (left front of engine on transaxle stud) Ground Heater and a/c control assembly Hot at all times Hot in run, bulb test or start Iat sensor in Idle air control valve (top left rear of engine, on right front of throttle body) Idle air valve control Ign ctrl a out Ign ctrl b out Inj/coil fuse 20a Injector ctrl Instrument cluster, cruise control, variable effort steering module and convenience center Intake air temp (iat) sensor (left front of engine compt, on right side of air cleaner) Map sensor (top left rear of engine, near throttle body) Map sensor in Oxygen sensor (rear of engine on exhaust manifold) Oxygen sensor in-hi Oxygen sensor in-lo Pnk Red Sensor ground Tan Throttle position (tp) sensor (top rear of engine, on left side of throttle body) Tps in Vss out 2.2L (VIN 4), Engine Performance Wiring Diagrams (2 of 2) for Buick Century Custom 1995 List of elements for 2.2L (VIN 4), Engine Performance Wiring Diagrams (2 of 2) for Buick Century Custom 1995: 77 (left front of engine on transaxle stud) 3rd gear sw 87a A/c control relay A/c relay ctrl Brake switch (behind dash, on brake pedal support) C 1995 vftc C10 C11 C12 C13 C14 C15 C16 Canister purge ctrl Canister purge solenoid valve (rear of engine, under intake manifold) Conn c3 Convenience center Coolant fan relay Coolant fan relay ctrl Coolant ind ctrl Coolant indicator D10 D11 D12 D13 D14 D15 D16 Data link connector Egr solenoid ctrl Egr valve (top of intake manifold) Electronic ignition (ei) system (rear of engine, above transaxle) Eng a/c fuse 10a Engine control module (ecm) (behind right side of i/p, near shroud) Fan/alt fuse 10a Fuel pump prime conn Fuel pump relay (right front of engine compt on relay bracket) Fuel pump sw/ oil pres sender/sw (right rear of engine, near elect ignition (ei) system) Fuel tank unit Fuse block G110 (transaxle stud, under intake manifold) G112 G112 (left front of engine, on transaxle stud) G402 (left rear of cargo comp, behind wheelhouse) Gages fuse 10a Hot in run Hot in run, bulb test or start Ignition Ignition coil Ignition switch Inj/coil fuse 20a Inline fuse Instrument cluster Knock sensor (rear of engine, right of electronic ignition system) Knock sensor in Malfunction ind ctrl Malfunction indicator Nca Park/neutral in Pcm fuse 15a Pnk Pnk c Pri Red Sec Serial data in/out Spark plugs Sw a Sw b Tan Tcc ctrl Tcc solenoid Transaxle range switch (rear of engine, top left side of transaxle) Vehicle speed sensor (rear of engine) Vss in
3.1L 3.1L (VIN M), Engine Performance Wiring Diagrams (1 of 3) for Buick Century Custom 1995 List of elements for 3.1L (VIN M), Engine Performance Wiring Diagrams (1 of 3) for Buick Century Custom 1995: 80 (lower rear of engine) (right front of engine compt on relay bracket) (top left side of engine) (transaxle stud, rear of starter solenoid) (transaxle stud, under intake manifold) 10a 15a A/c control assy A/c request on/off C 1995 vftc C10 C11 C12 C13 C14 C15 C16 Conn 1 Cruise ctrl sys Cruise engaged D10 D11 D12 D13 D14 D15 D16 Ecm fuse 15a Eng-a/c in-line (behind right side of i/p, taped to harness near fuse block) Est (3x) hi ref signal Est bypass signal Est control signal Est ref signal lo Fuel inj 1 Fuel inj 2 Fuel inj 3 Fuel inj 4 Fuel inj 5 Fuel inj 6 Fuel pump Fuel pump in-line fuse Fuel pump priming conn (left side of engine compt) Fuel pump relay Fuel pump relay (right front of engine compt on relay bracket) Fuel pump/ oil pressure sender/sw (center front of engine near oil filter) Fuel tank unit (top of fuel tank) Fuse block G119 G119 (transaxle stud, rear of starter solenoid) G131 G402 (left side wheel housing) Heated oxygen sensor (rear of engine, in exhaust manifold) Ho2s hi Ho2s lo Hot at all times Hot in run, bulb test or start Ignition amplifier and switching module Ignition coil assembly (right top of engine) Inj Inj/coil fuse 20a Injector ground Low resolution 3x crankshaft position sensor Maf sensor signal Mass air flow sensor Nca Plugs spark Pnk Pnk a Pnk d Powertrain control module (behind right side of i/p, near shroud) Red 87a Serial data Serial data jumper Spark plugs Tan Tan a Transaxle range sw input a Transaxle range sw input b Transaxle range sw input c Transaxle range sw parity in 3.1L (VIN M), Engine Performance Wiring Diagrams (2 of 3) for Buick Century Custom 1995 List of elements for 3.1L (VIN M), Engine Performance Wiring Diagrams (2 of 3) for Buick Century Custom 1995: 46 (brake pedal support bracket) (derm) (ebcm) 5 volt ref A nca A/c pressure sensor signal A/c refrigerant pressure sensor (left front of engine compt on a/c line) A10 A11 A12 B nca B10 B11 B12 Battery Brake switch C 1995 vftc Camshaft position sensor (right side of engine) Camshaft position signal hi Computer data lines system Conn 2 Crankshaft position sensor (right side of engine) Cruise control module Data link connector Engine coolant temp sensor (left front of engine) Engine coolant temp sig Fan/alt fuse 10a Fuse block G119 (transaxle stud, rear of starter solenoid) Hot in run Iat sensor sig Ign 1 Intake air temp sensor (left front of engine compt on air cleaner) Knock sensor (right rear of engine) Knock sensor sig Nca Pcm ground Pnk Power ground Powertrain control module (behind right side of i/p, near shroud) Sensor return Tan Throttle position sensor (rear of engine, right side of throttle body) Tp signal Trans oil temp sig Transaxle range switch (left side of transaxle) 3.1L (VIN M), Engine Performance Wiring Diagrams (3 of 3) for Buick Century Custom 1995 List of elements for 3.1L (VIN M), Engine Performance Wiring Diagrams (3 of 3) for Buick Century Custom 1995: 62 (top left rear of engine block) A/c comp coil out A/c compressor relay Automatic transaxle C 1995 vftc C10 C11 C12 C13 C14 C15 C16 Conn 3 Convenience center, i/p, variable effort steering module, cruise module Coolant fan relay #1 Coolant fan relay #2 Coolant fan relays Crank pos sig D10 D11 D12 D13 D14 D15 D16 Digital exhaust gas recirculation assembly Egr out - coil a Egr out - coil b Egr out - coil c Evap purge solenoid Evaporative emission canister purge solenoid (rear of engine, under intake manifold) Fan/alt fuse 10a Fuse block Gages fuse 10a Hot in run Hot in run, bulb test or start Idle air ctrl motor (top of engine on front of throttle body) Idle air feed - hi Idle air feed - lo Instrument cluster Mil indicator Pnk Powertrain control module (behind right side of i/p, near shroud) Red Serial data jumper Service engine soon indicator Shift sol - a out Shift sol - b out Shift sol a Shift sol b Sol a Sol b Sol c Tan Tcc pwm sol Tcc pwm solenoid Trans temp switch Transaxle converter clutch Vehicle speed sensor (lower right rear of engine on transaxle) Vss - hi Vss - lo Vss out 4k/ppm
EXTERIOR LIGHTS Back-up Lamps Wiring Diagram for Buick Century Custom 1995 List of elements for Back-up Lamps Wiring Diagram for Buick Century Custom 1995: 15 1995 vftc c Backup light D nca Fuse block (behind right i/p) G402-sedan (left rear wheelwell) G406-wagon (in liftgate license compt) Hot in run, bulb test or start Nca f Pnk Sedan only Transaxle range switch (left side of engine compt, on transaxle) Turn b/u fuse 15a Turn flasher Vin 4 Vin m Exterior Light Wiring Diagram, Sedan for Buick Century Custom 1995 List of elements for Exterior Light Wiring Diagram, Sedan for Buick Century Custom 1995: 54 (center of i/p) (left rear wheelwell) 1995 vftc c A10 A11 Backup lights circuit Convenience center (left of steering column) Daytime running lights module (behind center of i/p) Fuse block (behind right i/p) G108 (left radiator support) G109 (right radiator support) G206 G300 (under left floor trim, at driver's seat) G402 Hazard Hazard flasher Head High level stop light Hot at all times Hot in run, bulb test or start Instrument cluster Left front marker light Left front park/ turn light Left rear marker light Left rear tail/ stop/ turn lights Left tail lights Left turn & hazard Left turn ind. License light Light switch Multi-function alarm module Nca Normal Off Park Park lamps ctrl Pnk Radio Right front marker light Right front park/ turn light Right rear marker light Right rear tail/ stop/ turn lights Right tail lights Right turn & hazard Right turn ind. Stop haz fuse 20a Stop lamp brake switch (on brake pedal support) Tail fuse 20a Turn b/u fuse 15a Turn flasher (above accelerator pedal, on bracket) Turn- hazard switch assembly W/ luggage carrier W/drl only W/o luggage carrier Exterior Light Wiring Diagram, Wagon for Buick Century Custom 1995 List of elements for Exterior Light Wiring Diagram, Wagon for Buick Century Custom 1995: 52 (center of i/p) (left rear wheelwell) 1995 vftc c A10 A11 Backup lights circuit Convenience center (left of steering column) Daytime running lights module (behind center of i/p) Fuse block (behind right i/p) G108 (left radiator support) G109 (right radiator support) G206 G402 G406 (in liftgate license compt) Hazard Hazard flasher Head High level stop light High level stop light in-line resistor (in liftgate, near pass thru) Hot at all times Hot in run, bulb test or start Instrument cluster Left front marker light Left front park/ turn light Left rear marker light Left rear tail/ stop/ turn lights Left turn & hazard Left turn ind. License light Light switch Multi-function alarm module Nca Normal Off Ohm Park Park lamps ctrl Pnk Radio Right front marker light Right front park/ turn light Right rear marker light Right rear tail/ stop/ turn lights Right turn & hazard Right turn ind. Stop haz fuse 20a Stop lamp brake switch (on brake pedal support) Tail fuse 20a Turn b/u fuse 15a Turn flasher (above accelerator pedal, on bracket) Turn- hazard switch assembly W/drl only
GROUND DISTRIBUTION Ground Distribution Wiring Diagram (1 of 3) for Buick Century Custom 1995 List of elements for Ground Distribution Wiring Diagram (1 of 3) for Buick Century Custom 1995: 63 (buick) (olds) A/c clutch diode A/c compressor clutch Battery Bh conn pin f8 Blower motor Blower relay Buick C 1995 vftc C13 Camshaft position sensor Crankshaft position sensor Cruise control module D13 Data link connector Door lock relay assembly Drivers door latch switch Electronic brake control module Electronic ignition system Fuel pump relay G108 (left front of engine compartment on radiator support) G109 (right front of engine compartment on radiator support) G109 (upper right radiator support) G110 (transaxle stud, under intake manifold) G112 (left front of engine on transaxle stud) G115 (transaxle stud rear of starter solenoid) G130 (left front of engine compartment on transaxle stud) G203 (lower right inner kick panel) Heated oxygen sensor Instrument cluster Left front abs solenoid Left front marker lamp Left front park/turn lamp Left high beam headlamp Left low beam headlamp Left safety belt lap retractor release solenoid Left safety belt shoulder retractor release solenoid Lh horn Mass airflow sensor Master switch assembly Master switch assembly lamp Nca Nca a Olds Passenger door latch switch Powertrain control module Primary coolant fan Pusher coolant fan Right front abs solenoid Right front marker lamp Right front park/turn lamp Right front window switch lamp Right high beam headlamp Right horn Right low beam headlamp Right safety belt lap retractor release solenoid Right safety belt shoulder retractor release solenoid Tan Transaxle range switch Vin 4 Vin m Wiper motor module Ground Distribution Wiring Diagram (2 of 3) for Buick Century Custom 1995 List of elements for Ground Distribution Wiring Diagram (2 of 3) for Buick Century Custom 1995: 33 A14 Antenna relay Ashtray lamp Auto door unlock module Brake fluid level switch Brake transmission shift interlock solenoid Buick C 1995 vftc C10 C12 C15 C18 Cigar lighter Daytime running lights module Diagnostic energy reserve module Fiber optic light source Fuel tank unit G206 (center of i/p, left of ashtray) Heater-a/c control assembly lamp Heater-a/c control assembly lamps I/p compartment lamp Ignition key warning switch Instrument cluster Lamp driver module Light switch Multi- function alarm module Nca Oldsmobile Radio Reading lamp Rear defogger control Sedan Wagon Ground Distribution Wiring Diagram (3 of 3) for Buick Century Custom 1995 List of elements for Ground Distribution Wiring Diagram (3 of 3) for Buick Century Custom 1995: 53 (rear of car near center of tailgate) A12 Back-up lamps Buick sedan Buick wagon C 1995 vftc Capacitor a Diagnostic energy reserve module Forward discriminating sensor Fuel tank unit G109 (right radiator support) G202 (left side of i/p, near radio speaker) G203 (right kick panel) G206 (center of i/p, left of ashtray) G309 (under left floor trim at driver's seat) G402 (left rear of luggage compartment, behind wheelhouse) G407 G407 (rear of car near center of tailgate) G412 (left top of tailgate) High level stop lamp High level stop lamp in-line resistor Left back-up lamp Left door mirror switch Left rear marker lamp Left rear tail/ stop/turn lamps Left recliner switch Left tail lamps Left tail/ stop/turn lamps License lamp Nca Nca a Olds sedan Passenger compartment discriminating sensor Power seat switch Program connector Radio Rear dome lamp Rear washer pump Rear wiper module Rear wiper/ washer control sw Remote keyless entry module Right back-up lamp Right rear marker lamp Right rear tail/ stop/turn lamps Right recliner switch Right tail lamps Right tail/ stop/turn lamps Safety belt switch Sedan W/ auo W/ luggage carrier W/o luggage carrier Wagon
HEADLIGHTS Headlight Wiring Diagram, with DRL for Buick Century Custom 1995 List of elements for Headlight Wiring Diagram, with DRL for Buick Century Custom 1995: 69 (behind center of i/p (behind i/p on (behind left side of (brake ind) (drl) module (left front of engine compt, (mounted on center (top left center of 10a 20a A/c module) All times Assembly Beam Block Buick Buick olds Bulb test C 1995 vftc Cluster Column support) Composite Conn c1 Conn c2 Daytime running lts Dimmer Diode assembly Fan/alt Fuse G108 G206 Gages Ground Head Headlight Hi beam Hi beam ind Hi beam on input Hot Hot at Hot at all times Hot in run, I/p, above radio) I/p, on park brake assembly) Ignition input In run Ind Instrument Instrument cluster Left Light Near turn flasher Of i/p, above Off Olds On radiator support) Or start Park Park brake input Park brake switch Photoresistor Photoresistor input Pnk Right Right side of steering Switch System Tail Tan Headlight Wiring Diagram, without DRL for Buick Century Custom 1995 List of elements for Headlight Wiring Diagram, without DRL for Buick Century Custom 1995: 24 (buick) (buick) (olds) (olds) (on left radiator support) (on right radiator support) C 1995 vftc C2 c1 G108 G109 G206 (center of i/p) Head Headlight dimmer switch Hi beam Hi beam indicator Hot at all times Instrument cluster Left composite headlight assembly Light switch Lo beam Nca Off Park Right composite headlight assembly Tan
HORN Horn Wiring Diagram for Buick Century Custom 1995 List of elements for Horn Wiring Diagram for Buick Century Custom 1995: 15 (left radiator support) (right radiator support) C 1995 vftc Convenience center (left side of i/p) Ctsy fuse 20a Fuse block G108 G109 Horn relay Horn switch Hot at all times Left horn (lower left of engine compartment) Right horn (lower right of engine compartment) Slip ring Steering wheel
INSTRUMENT CLUSTER
INTERIOR LIGHTS Courtesy Lamps Wiring Diagram for Buick Century Custom 1995 List of elements for Courtesy Lamps Wiring Diagram for Buick Century Custom 1995: 34 Courtesy switch Ctsy fuse 20a Diode assembly (center of dash) Dome light Driver's door latch switch Fiber optic light source Fuse block G203 (lower right kick panel) G206 (center of i/p, left of ashtray) Gages fuse 10a Hot at all times Hot in run, bulb test or start I/p compartment light Inside lighted mirror assembly Left dash courtesy light Left front door courtesy light (buick) Left rear door jamb switch Left vanity mirror light Light switch Luggage compartment light Multi- function alarm module (convenience center) Nca Off Passenger's door latch switch Pnk Reading light (buick) Rear dome light Remote keyless entry module (left center of luggage compartment) Right dash courtesy light Right front door courtesy light (buick) Right rear door jamb switch Right vanity mirror light Tailgate light switch Underhood light Instrument Illumination Wiring Diagram for Buick Century Custom 1995 List of elements for Instrument Illumination Wiring Diagram for Buick Century Custom 1995: 26 (buick) (olds) Ashtray light Buick C 1995 vftc Dimmer switch Dimmer transistor (behind left side of i/p, near light switch) Exterior lights system Fuse block G203 (lower right kick panel) G206 (center of i/p, left of ashtray) Head Headlight switch Heater- a/c control assembly Hot at all times Inst lps fuse 5a Instrument cluster Light switch Master switch assembly light Off Olds Park Radio Rear defogger control Right front window switch light Tail fuse 20a
PASSIVE RESTRAINTS Passive Restraint Wiring Diagram for Buick Century Custom 1995 List of elements for Passive Restraint Wiring Diagram for Buick Century Custom 1995: 47 (behind center of i/p, below right side of ashtray) (below left front seat) (buick) (olds) (olds) (buick) (right shroud, near center access hole) (v6 vin m) (l4 vin 4) 15a A nca Anti-lock brake system B nca Battery C 1995 vftc C1 c2 C2 c1 C3 c2 Convenience center (behind left side of i/p, at shroud) D10 b8 Driver's door latch switch Fasten belts indicator Fasten belts indicator control Fuse block G203 G206 G300 Gages fuse 10a Ground Hot at all times Hot in run, bulb test or start Ignition Instrument cluster Left front door open input Left safety belt lap retractor release solenoid (left door) Left safety belt shoulder retractor release solenoid (left door) Multi- function alarm module Multi-function alarm in-line fuse (behind right side of i/p, taped to harness near fuse block) Nca Passenger's door latch switch Pnk Powertrain control module (behind right side of i/p) Right front door open input Right safety belt lap retractor release solenoid (right door) Right safety belt shoulder retractor release solenoid (right door) Safety belt input Safety belt solenoid control Safety belt switch (part of driver's seat belt assembly) Vehicle speed input Vehicle speed output
POWER ANTENNA Power Antenna Wiring Diagram for Buick Century Custom 1995 List of elements for Power Antenna Wiring Diagram for Buick Century Custom 1995: 16 Antenna Antenna coax lead Antenna motor (right front fender, on rail assembly) Antenna relay (behind right side of i/p, above i/p compartment) Ctsy fuse 20 amp Down Down switch Fuse block G206 (center of i/p) Hot at all times Hot in accy or run Nca Radio Radio fuse 10 amp Solid state Up switch
POWER DISTRIBUTION Power Distribution Wiring Diagram (1 of 3) for Buick Century Custom 1995 List of elements for Power Distribution Wiring Diagram (1 of 3) for Buick Century Custom 1995: 95 (12 ga-rust) (buick) (olds) (convenience center) (olds) (olds) (buick) (vin 4) (vin m) (w/ a31) A b A d Antenna relay Ashtray light B (w/o a31) Battery Blower relay Buick Buick sedan Buick wagon C 1995 vftc C10 C11 C13 Chevy Circuit breaker Ctsy fuse 20a D a Dash courtesy lights Daytime running lights (drl) module Daytime running lights module Door lock courtesy light Electronic brake control module Electronic brake control relay Exterior lights system F10 Front dome light Fuel pump in-line fuse 15a Fuel pump relay Fuel pump/ oil pressure sender/switch Fuse block Fusible link a (16 ga-rust) Fusible link b (14 ga-rust) Fusible link c (16 ga-rust) Fusible link d (20 ga-rust) Fusible link e Fusible link f (16 ga-rust) Fusible link g (14 ga-rust) Generator Head Headlight dimmer switch Heater-a/c control assembly Horn relay I/p compartment light Inside lighted mirror assembly Inst lps 5a Instrument cluster L4 vin 4 Left door lock switch Left door mirror switch Left vanity mirror light Light switch Luggage compartment light Master switch assembly light Multi- function alarm in-line fuse 15a Multi- function alarm module Multi- function alarm module (convenience center) Nca Off Olds Olds sedan Park Powertrain control module Primary coolant fan relay Pusher coolant fan relay Radio Rear defogger control Rear dome light Rear wiper/ washer control switch Red Remote dimmer module Remote keyless entry module Right door courtesy light Right door lock switch Right front window switch Right vanity mirror light Starter solenoid assembly Tail fuse 20a To ignition switch To pwr/acc circuit breaker (fuse block) To stop-haz fuse (fuse block) Transmission range switch Underhood light V6 vin m Vin m only W/drl Wagon Power Distribution Wiring Diagram (2 of 3) for Buick Century Custom 1995 List of elements for Power Distribution Wiring Diagram (2 of 3) for Buick Century Custom 1995: 61 (buick) (olds) (wagon) Acc B10 Brake switch Buick Bulb test Cig ltr fuse 20a Cigar lighter Daytime running lights module (w/drl) Diagnostic energy reserve module Door lock relay Door unlock module E (buick) (olds) d Electronic brake control module Electronic brake control relay F (buick) (olds) a F e F11 Fan/ alt fuse 10a From fusible link b From fusible link c Fuse block G206 (below left side of ashtray) Generator Hazard flasher (convenience center) Heater- a/c control assembly Htr/ a/c fuse 20a Ignition switch L (buick) (olds) k Left rear window switch Lh recliner switch Lock Nca Off Olds Pnk Power seat switch Power window control module Power window switch assembly Pwr/acc circuit breaker 30a Radio Radio fuse 10a Rear defogger control Rear wiper module Rear wiper/ washer switch Red Release relay Rh recliner switch Right front window switch Right rear window switch Run Sir/ crank in-line fuse 15a Start Starting/ charging system Stop/ haz fuse 20a Tcc solenoid valve (v6 vin m) To turn/ b/u fuse (fuse block) Wdo circuit breaker 30a Wiper fuse 25a Wiper/ washer switch Power Distribution Wiring Diagram (3 of 3) for Buick Century Custom 1995 List of elements for Power Distribution Wiring Diagram (3 of 3) for Buick Century Custom 1995: 55 (buick) (olds) (buick) (olds) a b (vin 4) (vin m) A/c compressor control relay A10 Airbag fuse 10a Arming sensor Auto door unlock module Buick C d C1 c9 C16 c8 C6 c2 Camshaft position sensor Crankshaft position sensor Cruise control module D b D16 Daytime running lights module Diagnostic energy reserve module Ecm fuse 15a Electronic ignition module Eng/ a/c in-line fuse 10a Evaporative emission canister purge solenoid Exhaust gas recirculation solenoid Fiber optic light source From ignition switch Fuel injectors Fuse block Gages fuse 10a Heated oxygen sensor Inj/ coil fuse 20a Instrument cluster Lamp driver module Mass airflow sensor Multi- function alarm module (convenience center) Multi- function lever Nca Park/ neutral position switch Pnk Powertrain control module Primary coolant fan relay Pusher coolant fan relay Reading lamp Rear defogger module Remote keyless entry module Turn flasher Turn/ b/u fuse 15a Unlock fuse 5a V6 vin m Vin 4 Vin m W/drl
POWER DOOR LOCKS Door Lock Wiring Diagram for Buick Century Custom 1995 List of elements for Door Lock Wiring Diagram for Buick Century Custom 1995: 41 (buick) (oldsmobile) (vin m) (vin 4) A tan Auto door unlock module (left side of i/p) C 1995 vftc C250 C3 c2 Ctsy fuse 20a D10 b8 Door lock relay (under left rear seat) Fuse block (behind right side of i/p) G104 (transaxle stud, rear of starter solenoid) G110 (transaxle stud, under intake manifold) G203 (lower right kick panel) G206 (center of i/p) Hot at all times Hot in run bulb test or start L4 vin 4 Left front door lock actuator Left power door lock switch Left rear door lock actuator Lock Lock relay Multi-function alarm module (in convenience center) Nca Park/neu in Pnk Powertrain control module (behind right side of i/p) Pwr acc circuit breaker 30a Right front door lock actuator Right power door lock switch Right rear door lock actuator Rly cntrl Tan Transaxle range switch (on transaxle) Unlock Unlock fuse 5a Unlock relay V6 vin m Veh sp in Keyless Entry Wiring Diagram for Buick Century Custom 1995 List of elements for Keyless Entry Wiring Diagram for Buick Century Custom 1995: 65 (buick) (oldsmobile) (vin m) (vin 4) A tan Auto door unlock module (left side of i/p) B tan Buick C 1995 vftc C250 C3 c2 Ctsy fuse 20a D10 b8 Door lock relay (under left rear seat) Fuse block (behind right side of i/p) G104 (transaxle stud, rear of starter solenoid) G110 (transaxle stud, under intake manifold) G203 (lower right kick panel) G206 (center of i/p) G300 (body front, harness, under left floor trim) Gages fuse 10a Ground Hot at all times Hot in run bulb test or start Ign Illum entry Interior lights system Keyless entry programming connector (near base of tailgate pillar) L4 vin 4 Left front door lock actuator Left power door lock switch Left rear door lock actuator Lf unlock Lock Lock relay Lock sig Multi-function alarm module (in convenience center) Nca Olds Park/neu in Pnk Powertrain control module (behind right side of i/p) Prog in Pwr acc circuit breaker 30a Rear compartment lid release solenoid Rear compartment lid release switch Release cntrl Release relay (right side of i/p) Remote keyless entry module (left center of luggage compt) Right front door lock actuator Right power door lock switch Right rear door lock actuator Rly cntrl Sedan Sedan only Tan Transaxle range switch (on transaxle) Trunk,tailgate fuel doors system Trunk,tailgate, fuel doors system Unlock Unlock fuse 5a Unlock relay Unlock sig V6 vin m Veh sp in Wagon
POWER MIRRORS Power Mirror Wiring Diagram for Buick Century Custom 1995 List of elements for Power Mirror Wiring Diagram for Buick Century Custom 1995: 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 1995 List of elements for 6-Way Power Seat Wiring Diagram for Buick Century Custom 1995: 19 30a Back C 1995 vftc Down Entire seat For- ward Forward/ back motor Front height Front height motor Fuse block G300 (under left front seat) Hot at all times Left front seat Power seat switch Pwr acc circuit breaker Rear height Rear height motor Tan Tan a Recliner Wiring Diagram for Buick Century Custom 1995 List of elements for Recliner Wiring Diagram for Buick Century Custom 1995: 16 C 1995 vftc Capacitor Fuse block Fwd G300 (under left front seat) Hot at all times Left front seat Left recliner switch Left seat recliner motor Nca Pwr acc circuit breaker 30a Recline Red Right front seat Right recliner switch Right seat recliner motor
POWER WINDOWS Power Window Wiring Diagram for Buick Century Custom 1995 List of elements for Power Window Wiring Diagram for Buick Century Custom 1995: 18 C 1995 vftc Fuse block G203 (at right shroud near center access hole) Hot in accy or run Inst lps fuse 5a Left front window motor Left rear window motor Left rear window switch Master switch assembly Master switch assembly light Rheostat controlled Right front window motor Right front window switch Right front window switch light Right rear window motor Right rear window switch Tan Wdo circuit breaker 30a
RADIO Radio Wiring Diagrams for Buick Century Custom 1995 List of elements for Radio Wiring Diagrams for Buick Century Custom 1995: 29 Antenna Antenna input Battery power Coaxial cable Ctsy fuse 20a Dim signal Fuse block (behind right side of dash) G205 (behind dash, right of steering column) Ground Hot at all times Hot in accy or run Ignition power Interior lights system Left front door speaker Left front speaker Left rear speaker Lt frt spkr Lt rear spkr On output Panel light Power antenna system Radio Radio fuse 10a Right front door speaker Right front speaker Right rear speaker Rt frt spkr Rt rear spkr Tan
SHIFT INTERLOCKS Shift Interlock Wiring Diagram for Buick Century Custom 1995 List of elements for Shift Interlock Wiring Diagram for Buick Century Custom 1995: 18 (buick) (center of i/p) (olds) A (olds) b (buick) Brake switch (brake pedal support) Brake transmission shift interlock solenoid (below left side of steering column) C 1995 vftc G206 Hot in run, bulb test or start I/p fuse block L4 vin 4 Nca Pnk Pnk d Transaxle range switch (left side of engine compartment) Turn b/u fuse 15a Turn flasher V6 vin m
STARTING/CHARGING Charging Wiring Diagram for Buick Century Custom 1995 List of elements for Charging Wiring Diagram for Buick Century Custom 1995: 34 (12 ga- rust) (buick) (not used) (olds) (solid state) Ac sense Batt Battery C 1995 vftc C13 C2 c1 Charge ind. Dc sense Fan/alt fuse 10a Field (rotor) Fuse block Fusible link Fusible link (20 ga- rust) G108 (left front of engine compt, on radiator support) Gages fuse 10a Generator (top right side of engine) Hot in run Hot in run, bulb test or start Instrument cluster Pnk Power distri- bution Power distribution Rectifier bridge Red Regulator Starter solenoid assembly (lower left front of engine) Stator Turn on input V6 vin m only Starting Wiring Diagram for Buick Century Custom 1995 List of elements for Starting Wiring Diagram for Buick Century Custom 1995: 25 * ** *v6 vin m **l4 vin 4 Accy Battery Bulb test C 1995 vftc E f Fusible link (14 ga -rust) Fusible link (16 ga -rust) G108 (left front of engine compt, on radiator support) Hold-in coil Ignition switch Lock Nca Nca b6 Off Power distribution system Pull-in coil Red Run Solenoid contacts Start Starter motor Starter solenoid assembly (lower left front of engine) Transaxle range switch (rear of engine, top left side of transaxle)
SUPPLEMENTAL RESTRAINTS Supplemental Restraint Wiring Diagram for Buick Century Custom 1995 List of elements for Supplemental Restraint Wiring Diagram for Buick Century Custom 1995: 55 (buick) (olds) 2.49 k 5.1 k 8.45 k A nca A10 A11 A12 Air bag fuse 10a Air bag ind Anti-lock brakes Arming sensor (left of pcm) B10 B11 B12 C 1995 vftc C1 c1 Convenience center (behind left side of i/p, near shroud) Crank input Data link conn (dlc) (below left side of i/p, near steering column) Diag request input Diagnostic energy reserve module (derm) (behind hvac control head) Driver 36v loop rsrv Driver seat belt Driver side "high" Driver side "low" Driver source sense Forward discriminating sensor (forward of condensor, below hood latch) G206 (behind center of i/p, left of astray) G300 (below driver's seat under floor trim) Ground Guages fuse 10a Hot in run, bulb test or start Hot in start I/p fuse block Ign 1 In-line fuse (right front corner of i/p, near fuse block) Inflator module (inside steering wheel hub) Instrument cluster Multi- function alarm module Nca Nca b Passenger compartment discriminating sensor (below center heater duct, under carpet) Pnk Redundant ground Redundant ind ign 1 Safety belt input Seat belt switch Serial data line Shorting bar Sir coil assembly (inside steering wheel hub) Sir crank fuse 15a Sir indicator Tan
TRANSMISSION
2.2L 2.2L (VIN 4), Transmission Wiring Diagram for Buick Century Custom 1995 List of elements for 2.2L (VIN 4), Transmission Wiring Diagram for Buick Century Custom 1995: 13 (i/p harness, right of dlc) s190 Automatic transaxle Closed in third gear D11 Fan/alt fuse 10a Fuse block (behind right side of dash) Hot in accy or run Pnk Powertrain control module (behind right side of dash) S143 (engine harness, behind right side of dash) Stop lamp tcc/cruise brake switch (on brake pedal support bracket) Third gear switch Torque coverter clutch solenoid
3.1L 3.1L (VIN M), Transmission Wiring Diagram for Buick Century Custom 1995 List of elements for 3.1L (VIN M), Transmission Wiring Diagram for Buick Century Custom 1995: 68 (eng harn, near pcm) s186 (left front of engine (left side of engine compartment, on transaxle) (lower right rear of engine, on transaxle) vehicle speed sensor (vss) 15a 5vdc ref Above throttle body) Automatic transaxle B10 B11 Battery Brake switch in C15 Ci3 Connector (dlc) (below i/p, near steering column) Coolant temp sens in Cruise control system (cruise control module) Cruise ind out D10 D13 D14 D15 D16 Data link m Engine coolant temperature (ect) sensor (center of engine, under throttle body) Fan/ alt fuse 10a Fuel pump in-line fuse Fuse block G129 (transaxle stud, rear of starter solenoid) Gnd Hot at all times Hot in accy or run Hot in run, bulb test or start Ign 1 Instrument cluster Maf sens sig Mass air flow (maf) sensor Pcm fuse 15a Pnk Powertrain control module (pcm) (behind right side of i/p) Pwm sol Pwm sol out S121 (engine harness, right rear of engine) S131 (engine harness, rear of engine) S164 S166 S190 S213 (i/p harness, behind rh side of i/p) S224 (i/p harness, near derm) Sensor return Serial data signal Shift sol a Shift sol a cntl Shift sol b Shift sol b cntl Signal init Stoplamp tcc/ cruise brake sw (behind i/p, on brake pedal support) Tcc enable sol Tcc sol out Throttle position (tp) sensor (top of engine, on throttle assembly) Tps in Trans range sw Trans temp sens Trans temp sens in Transaxle range sw Vss high in Vss low in Vss out 4000/ppm
TRUNK, TAILGATE, FUEL DOOR Tailgate Release Wiring Diagram for Buick Century Custom 1995 List of elements for Tailgate Release Wiring Diagram for Buick Century Custom 1995: 19 (top center of transaxle) C 1995 vftc Fuse block G129 Hot at all times Hot in run, bulb test or start L4 vin 4 Nca Pnk Pnk d Pwr/acc breaker 30a Release solenoid (lower left center of tailgate) Remote keyless entry module (left center of luggage compt) Tailgate release relay (behind right side of i/p) Tailgate release switch Transaxle range switch (rear of engine) (closed in park) Transaxle range switch (rear of engine) (closed in park) c1 Turn-b/u fuse 15a V6 vin m Trunk Release Wiring Diagram for Buick Century Custom 1995 List of elements for Trunk Release Wiring Diagram for Buick Century Custom 1995: 19 Buick C 1995 vftc C2 a Ctsy fuse 20a D nca Fuse block Hot at all times Hot in run, bulb test or start L4 vin4 Nca c Olds Pnk Pnk d Remote keyless entry module (left center of luggage compt) Transaxle range switch (rear of engine) (closed in park) c1 Trunk lid release switch Trunk release solenoid (on luggage compt lid) Turn-b/u fuse 15a V6 vin m
WARNING SYSTEMS Warning System Wiring Diagrams for Buick Century Custom 1995 List of elements for Warning System Wiring Diagrams for Buick Century Custom 1995: 64 (behind center of i/p, below right side of ashtray) (buick) (buick) (olds) (olds) (olds) (buick) (right shroud, near center access hole) (under driver's seat) (v6 vin m) (l4 vin 4) 15a A b A nca A13 nca Anti-lock brake system B a B nca Bat C 1995 vftc C1 c2 C2 c1 C3 c2 Control relay Convenience center (behind left side of i/p, at shroud) D10 b8 Door locks system Driver's door latch switch Exterior lights system Fasten belts indicator Fasten belts indicator control Fuse block G203 G206 G300 Gages fuse 10a Ground Head Hot at all times Hot in run, bulb test or start Ignition Ignition key warning switch (top of steering column, below turn/hazard switch) Ignition warning Instrument cluster Key-in Left front door open input Light switch Lights-on input Multi- function alarm module Multi-function alarm in-line fuse (behind left side of i/p, taped to harness near steering column) Nca Off Park Park/neutral position switch Passenger's door latch switch Passive restraint system Pnk Powertrain control module (behind right side of i/p) Retractor input Right front door open input Safety belt input Safety belt switch (part of driver's seat belt assembly) Turn bu fuse 15a Turn flasher Turn signal input Vehicle speed input Vehicle speed output
WIPER/WASHER Front Wiper/Washer Wiring Diagram for Buick Century Custom 1995 List of elements for Front Wiper/Washer Wiring Diagram for Buick Century Custom 1995: 27 (in washer reservoir) (left side of eng (v6 vin 4) (v6 vin m) C 1995 vftc Cover assembly Fuse block (right side of i/p) G110 (trans stud under manifold) G115 Hot in accy or run Mechanical arm Mist Nca Off On trans stud) Park switch Pnk Pulse Pulse delay Red Solid state timer Washer motor Washer switch Wiper motor module Wiper switch Wiper/ washer switch Wpr fuse 25a Rear Wiper/Washer Wiring Diagram for Buick Century Custom 1995 List of elements for Rear Wiper/Washer Wiring Diagram for Buick Century Custom 1995: 23 Auto- park module C 1995 vftc Fuse block G109 (right radiator support) G202 (near park brake bracket) G412 (left top of tailgate) Hot at all times Hot in run Hot with light switch in park or head Inst lps fuse 5a Off Panel light Park Pwr acc circuit breaker 30a Rear window wiper/ washer latch switch (bottom left corner of tailgate) Rear wiper module Rear wiper motor Rear wiper/ washer control switch Run Solid state Wash Wdo circuit breaker 30a Wipe
