Wiring Diagram Cluster
1990 Geo Prizm 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
Prizm L4-1600cc 1.6L DOHC VIN 5
Total Vehicle Diagrams
527
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 Geo Prizm 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.
1990 Geo Prizm 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.Compressor HVAC — Compressor ComponentsHeating and Air ConditioningOpen2.Compressor HVAC — Magnetic Clutch ComponentsHeating and Air ConditioningOpen3.Exploded Views > Compressor HVAC > Compressor ClutchGeneralOpen4.Exploded Views > Compressor HVAC > System Diagram > Compressor ComponentsGeneralOpen5.Exploded Views > Compressor HVAC > System Diagram > Magnetic Clutch ComponentsGeneralOpen6.Components > Relays > A/C Compressor RelayGeneralOpen7.Components > Switches > A/C Idle-Up Vacuum Switching ValveGeneralOpen8.Connector Views > Control Module HVAC > With Power SteeringGeneralOpen9.Connector Views > Control Module HVAC > Without Power SteeringGeneralOpen10.Electrical Diagrams > Heating and Air Conditioning > Blower MotorGeneralOpen11.Electrical Diagrams > Heating and Air Conditioning > System Diagram > Blower ControlsGeneralOpen12.Electrical Diagrams > Heating and Air Conditioning > System Diagram > Compressor Clutch ControlsGeneralOpen13.Electrical Diagrams > Heating and Air Conditioning > System Diagram > HeaterGeneralOpen14.Vacuum and Vapor Hose Diagrams > Heating and Air ConditioningGeneralOpen15.Electrical Diagrams > Blower ControlsHeating and Air ConditioningOpen16.Electrical Diagrams > Compressor Clutch ControlsHeating and Air ConditioningOpen17.Electrical Diagrams > HeaterHeating and Air ConditioningOpen18.Radio, Stereo, and Compact Disc — Diagnostic Aids > Pull-to-Seat ConnectorsAccessories and Optional EquipmentOpen19.Radio, Stereo, and Compact Disc — Diagnostic Aids > Push-to-Seat ConnectorsAccessories and Optional EquipmentOpen20.Radio, Stereo, and Compact Disc — Diagram Information and Instructions > Cell ReferencesAccessories and Optional EquipmentOpen21.Radio, Stereo, and Compact Disc — Diagram Information and Instructions > Symbol Identification > Part 1 of 3Accessories and Optional EquipmentOpen22.Radio, Stereo, and Compact Disc — Diagram Information and Instructions > Symbol Identification > Part 2 of 3Accessories and Optional EquipmentOpen23.Radio, Stereo, and Compact Disc — Diagram Information and Instructions > Symbol Identification > Part 3 of 3Accessories and Optional EquipmentOpen24.Radio, Stereo, and Compact Disc — Diagram Information and Instructions > Wire Color Code IdentificationAccessories and Optional EquipmentOpen25.Radio, Stereo, and Compact Disc — Electrical DiagramsAccessories and Optional EquipmentOpen26.Vacuum and Vapor Hose DiagramsHeating and Air ConditioningOpen27.Backup Lamp — Diagnostic Aids > Pull-to-Seat ConnectorsLighting and HornsOpen28.Backup Lamp — Diagnostic Aids > Push-to-Seat ConnectorsLighting and HornsOpen29.Backup Lamp — Diagram Information and Instructions > Cell ReferencesLighting and HornsOpen30.Backup Lamp — Diagram Information and Instructions > Symbol Identification > Part 1 of 3Lighting and HornsOpen31.Backup Lamp — Diagram Information and Instructions > Symbol Identification > Part 2 of 3Lighting and HornsOpen32.Backup Lamp — Diagram Information and Instructions > Symbol Identification > Part 3 of 3Lighting and HornsOpen33.Backup Lamp — Diagram Information and Instructions > Wire Color Code IdentificationLighting and HornsOpen34.Backup Lamp — Electrical DiagramsLighting and HornsOpen35.Components > Miscellaneous Components > A/C AmplifierGeneralOpen36.Components > Miscellaneous Components > A/C DiodeGeneralOpen37.Components > Miscellaneous Components > Blower ResistorGeneralOpen38.Components > Miscellaneous Components > Cruise Control Vacuum PumpGeneralOpen39.Components > Miscellaneous Components > Heater Circuit BreakerGeneralOpen40.Components > Miscellaneous Components > Junction Block 1 > HatchbackGeneralOpen41.Components > Miscellaneous Components > Junction Block 2 > HatchbackGeneralOpen42.Components > Miscellaneous Components > Junction Block 3 > HatchbackGeneralOpen43.Components > Miscellaneous Components > Junction Block 4 > HatchbackGeneralOpen44.Components > Miscellaneous Components > Junction Block 5 > HatchbackGeneralOpen45.Components > Relays > A/C Clutch RelayGeneralOpen46.Components > Relays > A/C Fan Relay No. 2GeneralOpen47.Components > Relays > Heater RelayGeneralOpen48.Components > Switches > A/C Cut-Out SwitchGeneralOpen
Exact Vehicle Hub
Browse →OEM Manual Evidence
Browse →1990 Geo Prizm A L L Diagnostic Trouble Codes ( DTC )OEM Manual
A L L Diagnostic Trouble Codes ( DTC ) — 1990 Geo Prizm L4-1600cc 1.6L DOHC VIN 5 Service Manual | Operation CHARM Operation CHARM : Car re...
1990 Geo Prizm A L L Diagnostic Trouble Codes ( DTC )OEM Manual
A L L Diagnostic Trouble Codes ( DTC ) — 1990 Geo Prizm L4-1600cc 1.6L DOHC VIN 6 Service Manual | Operation CHARM Operation CHARM : Car re...
1990 Geo Prizm Diagnostic Trouble CodesOEM Manual
Repair and Diagnosis: Diagnostic Trouble Codes — 1990 Geo Prizm L4-1600cc 1.6L DOHC VIN 5 Service Manual | Operation CHARM Operation CHARM...
1990 Geo Prizm Diagnostic Trouble CodesOEM Manual
Repair and Diagnosis: Diagnostic Trouble Codes — 1990 Geo Prizm L4-1600cc 1.6L DOHC VIN 6 Service Manual | Operation CHARM Operation CHARM...
More Prizm Wiring Pages
Starter Wiring DiagramAlternator Wiring DiagramFuel Pump Wiring DiagramHeadlight Wiring DiagramABS Brake 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
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 Diagram1995 Toyota Camry Coupe 2-Door A/C & Heater Wiring Diagram