Wiring Diagram Cluster
1991 Pontiac Firebird 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
Firebird V6-191 3.1L
Total Vehicle Diagrams
587
From Diagram To Fix
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Vehicle Repair Hub
Step out of raw diagrams and into the full 1991 Pontiac Firebird hub with repairs, specs, codes, and other systems already tied to this car.
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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.
1991 Pontiac Firebird 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 →Top A/C & Heater Diagram Paths
1.Vacuum and Vapor Hose Diagrams > Heating and Air Conditioning > Air Door Actuator / Motor, HVAC > With A/CGeneralOpen2.Vacuum and Vapor Hose Diagrams > Heating and Air Conditioning > Air Door Actuator / Motor, HVAC > Without A/CGeneralOpen3.Vacuum and Vapor Hose Diagrams > Heating and Air Conditioning > Housing Assembly HVAC > A/C Module SchematicGeneralOpen4.Vacuum and Vapor Hose Diagrams > Heating and Air Conditioning > Housing Assembly HVAC > Heater Module SchematicGeneralOpen5.Vacuum and Vapor Hose Diagrams > Heating and Air Conditioning > Housing Assembly HVAC > Operating Mode Airflow Distribution - A/CGeneralOpen6.Vacuum and Vapor Hose Diagrams > Heating and Air Conditioning > Housing Assembly HVAC > Operating Mode Airflow Distribution - HeaterGeneralOpen7.Vacuum and Vapor Hose Diagrams > Heating and Air Conditioning > System Diagram > Operating Mode Airflow Distribution > With A/CGeneralOpen8.Vacuum and Vapor Hose Diagrams > Heating and Air Conditioning > System Diagram > Operating Mode Airflow Distribution > Without A/CGeneralOpen9.Vacuum and Vapor Hose Diagrams > Heating and Air Conditioning > System Diagram > Vacuum Circuit > With A/CGeneralOpen10.Vacuum and Vapor Hose Diagrams > Heating and Air Conditioning > System Diagram > Vacuum Circuit > Without A/CGeneralOpen11.Vacuum and Vapor Hose Diagrams > Operating Mode Airflow Distribution > With A/CHeating and Air ConditioningOpen12.Vacuum and Vapor Hose Diagrams > Operating Mode Airflow Distribution > Without A/CHeating and Air ConditioningOpen13.Vacuum and Vapor Hose Diagrams > Vacuum Circuit > With A/CHeating and Air ConditioningOpen14.Vacuum and Vapor Hose Diagrams > Vacuum Circuit > Without A/CHeating and Air ConditioningOpen15.Components > Miscellaneous Components > A/C Compressor ClutchGeneralOpen16.Components > Miscellaneous Components > A/C Compressor Clutch DiodeGeneralOpen17.Components > Miscellaneous Components > Blower Resistors > Less A/CGeneralOpen18.Components > Miscellaneous Components > Blower Resistors > With A/CGeneralOpen19.Components > Miscellaneous Components > Heat-Defrost Valve Vacuum ActuatorGeneralOpen20.Components > Miscellaneous Components > Heater Water Valve Vacuum ActuatorGeneralOpen21.Components > Relays > A/C Compressor Control RelayGeneralOpen22.Electrical Diagrams > Heating and Air Conditioning > Blower ControlsGeneralOpen23.Electrical Diagrams > Heating and Air Conditioning > Compressor ControlsGeneralOpen24.Electrical Diagrams > Heating and Air Conditioning > HeaterGeneralOpen25.Electrical Diagrams > Blower ControlsHeating and Air ConditioningOpen26.Electrical Diagrams > Compressor ControlsHeating and Air ConditioningOpen27.Electrical Diagrams > HeaterHeating and Air ConditioningOpen28.Radio, Stereo, and Compact Disc — Diagnostic Aids > Pull-to-Seat ConnectorsAccessories and Optional EquipmentOpen29.Radio, Stereo, and Compact Disc — Diagnostic Aids > Push-to-Seat ConnectorsAccessories and Optional EquipmentOpen30.Radio, Stereo, and Compact Disc — Diagram Information and Instructions > Cell ReferencesAccessories and Optional EquipmentOpen31.Radio, Stereo, and Compact Disc — Diagram Information and Instructions > Schematic SymbolsAccessories and Optional EquipmentOpen32.Radio, Stereo, and Compact Disc — Diagram Information and Instructions > Wire Color Code IdentificationAccessories and Optional EquipmentOpen33.Radio, Stereo, and Compact Disc — Electrical DiagramsAccessories and Optional EquipmentOpen34.Radio, Stereo, and Compact Disc > Radio/Stereo — Diagnostic Aids > Pull-to-Seat ConnectorsAccessories and Optional EquipmentOpen35.Radio, Stereo, and Compact Disc > Radio/Stereo — Diagnostic Aids > Push-to-Seat ConnectorsAccessories and Optional EquipmentOpen36.Radio, Stereo, and Compact Disc > Radio/Stereo — Diagram Information and Instructions > Cell ReferencesAccessories and Optional EquipmentOpen37.Radio, Stereo, and Compact Disc > Radio/Stereo — Diagram Information and Instructions > Schematic SymbolsAccessories and Optional EquipmentOpen38.Radio, Stereo, and Compact Disc > Radio/Stereo — Diagram Information and Instructions > Wire Color Code IdentificationAccessories and Optional EquipmentOpen39.Radio, Stereo, and Compact Disc > Radio/Stereo — Electrical DiagramsAccessories and Optional EquipmentOpen40.Backup Lamp — Diagnostic Aids > Pull-to-Seat ConnectorsLighting and HornsOpen41.Backup Lamp — Diagnostic Aids > Push-to-Seat ConnectorsLighting and HornsOpen42.Backup Lamp — Diagram Information and Instructions > Cell ReferencesLighting and HornsOpen43.Backup Lamp — Diagram Information and Instructions > Schematic SymbolsLighting and HornsOpen44.Backup Lamp — Diagram Information and Instructions > Wire Color Code IdentificationLighting and HornsOpen45.Backup Lamp — Electrical DiagramsLighting and HornsOpen46.Components > Miscellaneous Components > Heater Water ValveGeneralOpen47.Components > Miscellaneous Components > Lower Mode Vacuum ActuatorGeneralOpen48.Components > Miscellaneous Components > Recirculating/Outside Air Vacuum ActuatorGeneralOpen
Exact Vehicle Hub
Browse →OEM Manual Evidence
Browse →1991 Pontiac Firebird A L L Diagnostic Trouble Codes ( DTC )OEM Manual
A L L Diagnostic Trouble Codes ( DTC ) — 1991 Pontiac Firebird V6-191 3.1L Service Manual | Operation CHARM Operation CHARM : Car repair ma...
1991 Pontiac Firebird A L L Diagnostic Trouble Codes ( DTC )OEM Manual
A L L Diagnostic Trouble Codes ( DTC ) — 1991 Pontiac Firebird V8-350 5.7L Service Manual | Operation CHARM Operation CHARM : Car repair ma...
1991 Pontiac Firebird A L L Diagnostic Trouble Codes ( DTC )OEM Manual
A L L Diagnostic Trouble Codes ( DTC ) — 1991 Pontiac Firebird V8-305 5.0L VIN E TBI Service Manual | Operation CHARM Operation CHARM : Car...
1991 Pontiac Firebird A L L Diagnostic Trouble Codes ( DTC )OEM Manual
A L L Diagnostic Trouble Codes ( DTC ) — 1991 Pontiac Firebird V8-305 5.0L VIN F FI Service Manual | Operation CHARM Operation CHARM : Car...
More Firebird Wiring Pages
Starter Wiring DiagramAlternator Wiring DiagramHeadlight Wiring DiagramPower Window Wiring DiagramInstrument Cluster Wiring DiagramWiper & Washer Wiring DiagramTransmission Wiring DiagramCruise Control Wiring DiagramAirbag SRS Wiring DiagramEngine Management Wiring DiagramBody Electrical Wiring Diagram
Same System, Other Vehicles
1991 Toyota Supra A/C & Heater Wiring Diagram1993 Toyota Camry Sedan A/C & Heater Wiring Diagram1993 Toyota Camry Wagon 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 Diagram1995 Toyota Camry Coupe 2-Door A/C & Heater Wiring Diagram1995 Toyota Celica Coupe A/C & Heater Wiring Diagram