Wiring Diagram Cluster
1990 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
593
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 1990 Pontiac Firebird hub with repairs, specs, codes, and other systems already tied to this car.
View vehicle repair hub →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.
1990 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 > Housing Assembly HVAC > A/C Module SchematicGeneralOpen2.Vacuum and Vapor Hose Diagrams > Heating and Air Conditioning > Housing Assembly HVAC > Heater Airflow SchematicGeneralOpen3.Vacuum and Vapor Hose Diagrams > Heating and Air Conditioning > Housing Assembly HVAC > Operating Mode Airflow Distribution - A/CGeneralOpen4.Compressor HVAC — DiagramHeating and Air ConditioningOpen5.Exploded Views > Compressor HVACGeneralOpen6.Vacuum and Vapor Hose Diagrams > Heating and Air Conditioning > Air Door Actuator / Motor, HVACGeneralOpen7.Components > Miscellaneous Components > A/C Compressor ClutchGeneralOpen8.Components > Miscellaneous Components > Blower Resistors > Less A/CGeneralOpen9.Components > Miscellaneous Components > Blower Resistors > With A/CGeneralOpen10.Components > Motors > Blower Motor > With A/CGeneralOpen11.Components > Motors > Blower Motor > Without A/CGeneralOpen12.Components > Motors > Heat-Defrost Vacuum MotorGeneralOpen13.Components > Motors > Heater Water Valve Vacuum MotorGeneralOpen14.Electrical Diagrams > Heating and Air Conditioning > Blower Controls > Part 1 of 2GeneralOpen15.Electrical Diagrams > Heating and Air Conditioning > Blower Controls > Part 2 of 2GeneralOpen16.Electrical Diagrams > Heating and Air Conditioning > Compressor ControlsGeneralOpen17.Vacuum and Vapor Hose Diagrams > Heating and Air Conditioning > System Diagram > Operating Mode Airflow DistributionGeneralOpen18.Vacuum and Vapor Hose Diagrams > Heating and Air Conditioning > System Diagram > Vacuum CircuitGeneralOpen19.Electrical Diagrams > Blower Controls > Part 1 of 2Heating and Air ConditioningOpen20.Electrical Diagrams > Blower Controls > Part 2 of 2Heating and Air ConditioningOpen21.Electrical Diagrams > Compressor ControlsHeating and Air ConditioningOpen22.Radio, Stereo, and Compact Disc — Diagnostic Aids > Pull-to-Seat ConnectorsAccessories and Optional EquipmentOpen23.Radio, Stereo, and Compact Disc — Diagnostic Aids > Push-to-Seat ConnectorsAccessories and Optional EquipmentOpen24.Radio, Stereo, and Compact Disc — Diagram Information and Instructions > Cell ReferencesAccessories and Optional EquipmentOpen25.Radio, Stereo, and Compact Disc — Diagram Information and Instructions > Schematic SymbolsAccessories and Optional EquipmentOpen26.Radio, Stereo, and Compact Disc — Diagram Information and Instructions > Symbol IdentificationAccessories and Optional EquipmentOpen27.Radio, Stereo, and Compact Disc — Diagram Information and Instructions > Wire Color Code IdentificationAccessories and Optional EquipmentOpen28.Radio, Stereo, and Compact Disc — Electrical DiagramsAccessories and Optional EquipmentOpen29.Radio, Stereo, and Compact Disc > Radio/Stereo — Diagnostic Aids > Pull-to-Seat ConnectorsAccessories and Optional EquipmentOpen30.Radio, Stereo, and Compact Disc > Radio/Stereo — Diagnostic Aids > Push-to-Seat ConnectorsAccessories and Optional EquipmentOpen31.Radio, Stereo, and Compact Disc > Radio/Stereo — Diagram Information and Instructions > Cell ReferencesAccessories and Optional EquipmentOpen32.Radio, Stereo, and Compact Disc > Radio/Stereo — Diagram Information and Instructions > Schematic SymbolsAccessories and Optional EquipmentOpen33.Radio, Stereo, and Compact Disc > Radio/Stereo — Diagram Information and Instructions > Symbol IdentificationAccessories and Optional EquipmentOpen34.Radio, Stereo, and Compact Disc > Radio/Stereo — Diagram Information and Instructions > Wire Color Code IdentificationAccessories and Optional EquipmentOpen35.Radio, Stereo, and Compact Disc > Radio/Stereo — Electrical DiagramsAccessories and Optional EquipmentOpen36.Vacuum and Vapor Hose Diagrams > Operating Mode Airflow DistributionHeating and Air ConditioningOpen37.Vacuum and Vapor Hose Diagrams > Vacuum CircuitHeating and Air ConditioningOpen38.Backup Lamp — Diagnostic Aids > Pull-to-Seat ConnectorsLighting and HornsOpen39.Backup Lamp — Diagnostic Aids > Push-to-Seat ConnectorsLighting and HornsOpen40.Backup Lamp — Diagram Information and Instructions > Cell ReferencesLighting and HornsOpen41.Backup Lamp — Diagram Information and Instructions > Schematic SymbolsLighting and HornsOpen42.Backup Lamp — Diagram Information and Instructions > Symbol IdentificationLighting and HornsOpen43.Backup Lamp — Diagram Information and Instructions > Wire Color Code IdentificationLighting and HornsOpen44.Backup Lamp — Electrical DiagramsLighting and HornsOpen45.Components > Miscellaneous Components > Brake Vacuum Release ValveGeneralOpen46.Components > Miscellaneous Components > Hatch Contact AssemblyGeneralOpen47.Components > Miscellaneous Components > Recirculating/Outside Air Vacuum ActuatorGeneralOpen48.Components > Miscellaneous Components > Vacuum Release ValveGeneralOpen
Exact Vehicle Hub
Browse →OEM Manual Evidence
Browse →1990 Pontiac Firebird A L L Diagnostic Trouble Codes ( DTC )OEM Manual
A L L Diagnostic Trouble Codes ( DTC ) — 1990 Pontiac Firebird V6-191 3.1L Service Manual | Operation CHARM Operation CHARM : Car repair ma...
1990 Pontiac Firebird A L L Diagnostic Trouble Codes ( DTC )OEM Manual
A L L Diagnostic Trouble Codes ( DTC ) — 1990 Pontiac Firebird V8-305 5.0L VIN E TBI Service Manual | Operation CHARM Operation CHARM : Car...
1990 Pontiac Firebird A L L Diagnostic Trouble Codes ( DTC )OEM Manual
A L L Diagnostic Trouble Codes ( DTC ) — 1990 Pontiac Firebird V8-350 5.7L Service Manual | Operation CHARM Operation CHARM : Car repair ma...
1990 Pontiac Firebird A L L Diagnostic Trouble Codes ( DTC )OEM Manual
A L L Diagnostic Trouble Codes ( DTC ) — 1990 Pontiac Firebird V8-305 5.0L VIN F FI Service Manual | Operation CHARM Operation CHARM : Car...
More Firebird Wiring Pages
Starter Wiring DiagramAlternator Wiring DiagramFuel Pump 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
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