Wiring Diagram Cluster

1986 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.

Matched Diagrams

48

Variant Used

Century Estate Wagon L4-151 2.5L

Total Vehicle Diagrams

316

From Diagram To Fix

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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.

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Vehicle Repair Hub

Step out of raw diagrams and into the full 1986 Buick Century hub with repairs, specs, codes, and other systems already tied to this car.

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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.

1986 Buick Century A L L Diagnostic Trouble Codes ( DTC ) β†’

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More System Pages for This Vehicle

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

Starter Wiring Diagram β†’

Top A/C & Heater Diagram Paths

1.Electrical Diagrams > Heating and Air Conditioning > Compressor HVAC > Part 1 of 3GeneralOpen2.Electrical Diagrams > Heating and Air Conditioning > Compressor HVAC > Part 2 of 3GeneralOpen3.Electrical Diagrams > Heating and Air Conditioning > Compressor HVAC > Part 3 of 3GeneralOpen4.Compressor HVAC β€” Diagram Information and InstructionsHeating and Air ConditioningOpen5.Compressor HVAC β€” Electrical Diagrams > Part 1 of 3Heating and Air ConditioningOpen6.Compressor HVAC β€” Electrical Diagrams > Part 2 of 3Heating and Air ConditioningOpen7.Compressor HVAC β€” Electrical Diagrams > Part 3 of 3Heating and Air ConditioningOpen8.Compressor HVAC β€” Exploded Views > Delco Air R-4 Radial CompressorHeating and Air ConditioningOpen9.Compressor HVAC β€” Exploded Views > Delco Air/Harrison DA-V5 Variable Displacement CompressorHeating and Air ConditioningOpen10.Components > Motors > A/C Defrost Vacuum MotorGeneralOpen11.Components > Motors > A/C Heater Vacuum MotorGeneralOpen12.Electrical Diagrams > Heating and Air Conditioning > System Diagram > Blower Controls - Electronic Climate ControlsGeneralOpen13.Electrical Diagrams > Heating and Air Conditioning > System Diagram > Compressor Controls - Electronic Climate Controls > Part 1 of 3GeneralOpen14.Electrical Diagrams > Heating and Air Conditioning > System Diagram > Compressor Controls - Electronic Climate Controls > Part 2 of 3GeneralOpen15.Electrical Diagrams > Heating and Air Conditioning > System Diagram > Compressor Controls - Electronic Climate Controls > Part 3 of 3GeneralOpen16.Exploded Views > Compressor HVAC > Delco Air R-4 Radial CompressorGeneralOpen17.Exploded Views > Compressor HVAC > Delco Air/Harrison DA-V5 Variable Displacement CompressorGeneralOpen18.Electrical Diagrams > Blower Controls - Electronic Climate ControlsHeating and Air ConditioningOpen19.Electrical Diagrams > Compressor Controls - Electronic Climate Controls > Part 1 of 3Heating and Air ConditioningOpen20.Electrical Diagrams > Compressor Controls - Electronic Climate Controls > Part 2 of 3Heating and Air ConditioningOpen21.Electrical Diagrams > Compressor Controls - Electronic Climate Controls > Part 3 of 3Heating and Air ConditioningOpen22.Components > Miscellaneous Components > A/C Compressor Clutch DiodeGeneralOpen23.Components > Motors > Heater Valve Vacuum MotorGeneralOpen24.Components > Relays > A/C Compressor Control RelayGeneralOpen25.Electrical Diagrams > Heating and Air Conditioning > Blower MotorGeneralOpen26.Electrical Diagrams > Heating and Air Conditioning > Blower Motor ResistorGeneralOpen27.Electrical Diagrams > Heating and Air Conditioning > Blower Motor SwitchGeneralOpen28.Vacuum and Vapor Hose Diagrams > Heating and Air ConditioningGeneralOpen29.Radio, Stereo, and Compact Disc β€” Diagram Information and InstructionsAccessories and Optional EquipmentOpen30.Radio, Stereo, and Compact Disc β€” Electrical Diagrams > Radio & SpeakersAccessories and Optional EquipmentOpen31.Radio, Stereo, and Compact Disc β€” Electrical Diagrams > Speaker SystemAccessories and Optional EquipmentOpen32.Vacuum and Vapor Hose DiagramsHeating and Air ConditioningOpen33.Components > Miscellaneous Components > Electronic Level Control CompressorGeneralOpen34.Components > Miscellaneous Components > Expansion Tube, A/CGeneralOpen35.Components > Miscellaneous Components > Heater Water ValveGeneralOpen36.Components > Miscellaneous Components > Horn CapacitorGeneralOpen37.Components > Miscellaneous Components > Vacuum TankGeneralOpen38.Components > Motors > Blower MotorGeneralOpen39.Components > Motors > Blower Motor RelayGeneralOpen40.Components > Motors > Blower Motor ResistorsGeneralOpen41.Components > Motors > Recirculating Outside Air Vacuum MotorGeneralOpen42.Components > Relays > Blower RelayGeneralOpen43.Components > Switches > A/C High Pressure Cut-Out SwitchGeneralOpen44.Components > Switches > A/C Low Pressure Cut-Out SwitchGeneralOpen45.Components > Switches > A/C Pressure Cycling SwitchGeneralOpen46.Components > Switches > Low Brake Vacuum SwitchGeneralOpen47.Electrical Diagrams > Electronic/Powertrain Control Module (ECM/PCM) > Black Connector (VIN R, U)Powertrain ManagementOpen48.Electrical Diagrams > Fuel Control & Idle Air Control (IAC)Powertrain ManagementOpen