Wiring Diagram Cluster

1985 Buick Century A/C & Heater Wiring Diagram

Find A/C compressor clutch wiring, blower motor circuits, temperature control module paths, and refrigerant pressure switch schematics.

Open Exact Vehicle Repair HubOpen Interactive Diagram BrowserBrowse All Wiring Diagrams

Matched Diagrams

48

Variant Used

Century Estate Wagon L4-151 2.5L

Total Vehicle Diagrams

348

From Diagram To Fix

Use this wiring page as the jump point, not the dead end

Open the exact diagram, then move directly into the vehicle hub, the repair most likely tied to this system, or the code cluster that usually shows up with it.

Keep context

Vehicle Repair Hub

Step out of raw diagrams and into the full 1985 Buick Century hub with repairs, specs, codes, and other systems already tied to this car.

View vehicle repair hub →
1985 Buick Century A L L Diagnostic Trouble Codes ( DTC )

OEM source

Factory Manual Evidence

When there is no clean repair shortcut for this system, drop into the OEM manual sections that usually carry the authoritative test path.

1985 Buick Century A L L Diagnostic Trouble Codes ( DTC ) →
1985 Buick Century A L L Diagnostic Trouble Codes ( DTC )1985 Buick Century A L L Diagnostic Trouble Codes ( DTC )1985 Buick Century A L L Diagnostic Trouble Codes ( DTC )

Stay in wiring

More System Pages for This Vehicle

Move laterally into the neighboring systems that usually share the same electrical neighborhood.

Starter Wiring Diagram →
Alternator Wiring DiagramHeadlight Wiring DiagramPower Window Wiring Diagram

Top A/C & Heater Diagram Paths

1.Electrical Diagrams > Heating and Air Conditioning > Compressor HVAC > Part 1 of 2GeneralOpen2.Electrical Diagrams > Heating and Air Conditioning > Compressor HVAC > Part 2 of 2GeneralOpen3.Vacuum and Vapor Hose Diagrams > Heating and Air Conditioning > A/C & Heater Vacuum CircuitGeneralOpen4.Compressor HVAC — Diagram Information and InstructionsHeating and Air ConditioningOpen5.Compressor HVAC — Electrical Diagrams > Part 1 of 2Heating and Air ConditioningOpen6.Compressor HVAC — Electrical Diagrams > Part 2 of 2Heating and Air ConditioningOpen7.Compressor HVAC — Exploded ViewsHeating and Air ConditioningOpen8.Vacuum and Vapor Hose Diagrams > A/C & Heater Vacuum CircuitHeating and Air ConditioningOpen9.Components > Motors > A/C Defrost Vacuum MotorGeneralOpen10.Components > Motors > A/C Heater Vacuum MotorGeneralOpen11.Exploded Views > Compressor HVACGeneralOpen12.Vacuum and Vapor Hose Diagrams > Heating and Air Conditioning > Heater Vacuum CircuitGeneralOpen13.Vacuum and Vapor Hose Diagrams > Heater Vacuum CircuitHeating and Air ConditioningOpen14.Components > Relays > A/C Compressor Control RelayGeneralOpen15.Electrical Diagrams > Heating and Air Conditioning > Blower MotorGeneralOpen16.Electrical Diagrams > Heating and Air Conditioning > System Diagram > Blower ControlsGeneralOpen17.Electrical Diagrams > Heating and Air Conditioning > System Diagram > Compressor Controls > Part 1 of 2GeneralOpen18.Electrical Diagrams > Heating and Air Conditioning > System Diagram > Compressor Controls > Part 2 of 2GeneralOpen19.Electrical Diagrams > Heating and Air Conditioning > System Diagram > Heater Control Wiring CircuitGeneralOpen20.Electrical Diagrams > Blower ControlsHeating and Air ConditioningOpen21.Electrical Diagrams > Compressor Controls > Part 1 of 2Heating and Air ConditioningOpen22.Electrical Diagrams > Compressor Controls > Part 2 of 2Heating and Air ConditioningOpen23.Electrical Diagrams > Heater Control Wiring CircuitHeating and Air ConditioningOpen24.Radio, Stereo, and Compact Disc — Diagram Information and InstructionsAccessories and Optional EquipmentOpen25.Radio, Stereo, and Compact Disc — Electrical Diagrams > Radio, Speakers & Digital ClockAccessories and Optional EquipmentOpen26.Radio, Stereo, and Compact Disc — Electrical Diagrams > Speaker SystemAccessories and Optional EquipmentOpen27.Components > Miscellaneous Components > Blower ResistorsGeneralOpen28.Components > Miscellaneous Components > Early Fuel Evaporation HeaterGeneralOpen29.Components > Miscellaneous Components > ELC Compressor AssemblyGeneralOpen30.Components > Miscellaneous Components > Expansion Tube, A/CGeneralOpen31.Components > Miscellaneous Components > Vacuum Release ValveGeneralOpen32.Components > Miscellaneous Components > Vacuum TankGeneralOpen33.Components > Motors > Blower MotorGeneralOpen34.Components > Motors > Recirculating Outside Air Vacuum MotorGeneralOpen35.Components > Relays > Blower RelayGeneralOpen36.Components > Relays > Low Brake Vacuum RelayGeneralOpen37.Components > Switches > A/C High Pressure SwitchGeneralOpen38.Components > Switches > A/C Temperature Cut-Out SwitchGeneralOpen39.Components > Switches > Low Brake Vacuum SwitchGeneralOpen40.Electrical Diagrams > Fuel Control, Idle Air Control (IAC) & Vehicle Speed SensorsPowertrain ManagementOpen41.Electrical Diagrams > Lighting and Horns > Backup LampGeneralOpen42.Electrical Diagrams > Powertrain Management > System Diagram > Fuel Control, Idle Air Control (IAC) & Vehicle Speed SensorsGeneralOpen43.Electrical Diagrams > Radio, Stereo, and Compact Disc > Radio, Speakers & Digital ClockGeneralOpen44.Electrical Diagrams > Radio, Stereo, and Compact Disc > Speaker SystemGeneralOpen45.Emission Control Systems — Vacuum and Vapor Hose Diagrams > Figure 8 Front Wheel Drive Models W/4-151 (2.5L) TBI, (Vin R)Powertrain ManagementOpen46.Emission Control Systems — Vacuum and Vapor Hose Diagrams > Figure 9 4-151 (2.5L) TBI, (Vin R)Powertrain ManagementOpen47.Vacuum and Vapor Hose DiagramsCruise ControlOpen48.Vacuum and Vapor Hose Diagrams > Cruise ControlGeneralOpen

Exact Vehicle Hub

Browse →
1985 Buick Century Repair HubExact Vehicle

Open the exact vehicle hub for this wiring page to move into repair, manual, and code clusters without leaving the 1985 Buick Century context.

OEM Manual Evidence

Browse →
1985 Buick Century A L L Diagnostic Trouble Codes ( DTC )OEM Manual

A L L Diagnostic Trouble Codes ( DTC ) — 1985 Buick Century Estate Wagon L4-151 2.5L Service Manual | Operation CHARM Operation CHARM : Car...

1985 Buick Century A L L Diagnostic Trouble Codes ( DTC )OEM Manual

A L L Diagnostic Trouble Codes ( DTC ) — 1985 Buick Century Estate Wagon V6-231 3.8L Service Manual | Operation CHARM Operation CHARM : Car...

1985 Buick Century A L L Diagnostic Trouble Codes ( DTC )OEM Manual

A L L Diagnostic Trouble Codes ( DTC ) — 1985 Buick Century L4-151 2.5L VIN R TBI Service Manual | Operation CHARM Operation CHARM : Car re...

1985 Buick Century A L L Diagnostic Trouble Codes ( DTC )OEM Manual

A L L Diagnostic Trouble Codes ( DTC ) — 1985 Buick Century Estate Wagon V6-181 3.0L Service Manual | Operation CHARM Operation CHARM : Car...

More Century Wiring Pages

Starter Wiring DiagramAlternator Wiring DiagramHeadlight Wiring DiagramPower Window Wiring DiagramInstrument Cluster Wiring DiagramWiper & Washer Wiring DiagramTransmission Wiring DiagramCruise Control Wiring DiagramEngine Management Wiring DiagramBody Electrical Wiring Diagram

Same System, Other Vehicles

1990 Toyota Supra A/C & Heater Wiring Diagram1993 Toyota Camry Sedan A/C & Heater Wiring Diagram1993 Toyota Camry Wagon A/C & Heater Wiring Diagram1990 Honda Prelude A/C & Heater Wiring Diagram1994 Toyota Camry Sedan 2-Door A/C & Heater Wiring Diagram1994 Toyota Camry Sedan 4-Door A/C & Heater Wiring Diagram1994 Toyota Celica A/C & Heater Wiring Diagram2013 Toyota Camry A/C & Heater Wiring Diagram