Wiring Diagram Cluster
1990 Porsche 944 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
944 S2 Cabriolet L4-2990cc 3.0L DOHC
Total Vehicle Diagrams
457
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 Porsche 944 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 Porsche 944 Testing and Inspection →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.Electrical Diagrams > Heating and Air Conditioning > Compressor HVAC > Compressor ClutchGeneralOpen2.Electrical Diagrams > Heating and Air Conditioning > Compressor HVAC > System DiagramGeneralOpen3.Compressor HVAC — Diagram Information and Instructions > Component, Connector, Ground and Splice Locations > ComponentsHeating and Air ConditioningOpen4.Compressor HVAC — Diagram Information and Instructions > Component, Connector, Ground and Splice Locations > ConnectorsHeating and Air ConditioningOpen5.Compressor HVAC — Diagram Information and Instructions > Component, Connector, Ground and Splice Locations > GroundsHeating and Air ConditioningOpen6.Compressor HVAC — Diagram Information and Instructions > How to Use DiagramsHeating and Air ConditioningOpen7.Compressor HVAC — Diagram Information and Instructions > Wire Color Code IdentificationHeating and Air ConditioningOpen8.Compressor HVAC — Electrical DiagramsHeating and Air ConditioningOpen9.Electrical Diagrams > Heating and Air Conditioning > Ambient Temperature Sensor / Switch HVACGeneralOpen10.Electrical Diagrams > Heating and Air Conditioning > Aspirator, HVACGeneralOpen11.Electrical Diagrams > Heating and Air Conditioning > Control Assembly, HVACGeneralOpen12.Electrical Diagrams > Heating and Air Conditioning > Control Module HVACGeneralOpen13.Electrical Diagrams > Heating and Air Conditioning > Coolant Temperature Sensor / Switch HVACGeneralOpen14.Electrical Diagrams > Heating and Air Conditioning > Refrigerant Pressure Sensor / Switch, HVACGeneralOpen15.Electrical Diagrams > Heating and Air Conditioning > System Relay, HVACGeneralOpen16.Exploded Views > Heating and Air Conditioning > Air Door, HVACGeneralOpen17.Exploded Views > Heating and Air Conditioning > Housing Assembly HVACGeneralOpen18.Electrical Diagrams > Heating and Air Conditioning > Blower MotorGeneralOpen19.Electrical Diagrams > Heating and Air Conditioning > Blower Motor RelayGeneralOpen20.Electrical Diagrams > Heating and Air Conditioning > Blower Motor ResistorGeneralOpen21.Electrical Diagrams > Heating and Air Conditioning > Blower Motor SwitchGeneralOpen22.Vacuum and Vapor Hose Diagrams > Heating and Air ConditioningGeneralOpen23.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Component, Connector, Ground and Splice Locations > ComponentsBrakes and Traction ControlOpen24.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Component, Connector, Ground and Splice Locations > ConnectorsBrakes and Traction ControlOpen25.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Component, Connector, Ground and Splice Locations > GroundsBrakes and Traction ControlOpen26.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > How to Use DiagramsBrakes and Traction ControlOpen27.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Wire Color Code IdentificationBrakes and Traction ControlOpen28.Antilock Brakes / Traction Control Systems — Electrical DiagramsBrakes and Traction ControlOpen29.Vacuum and Vapor Hose DiagramsHeating and Air ConditioningOpen30.Backup Lamp — Diagram Information and Instructions > Component, Connector, Ground and Splice Locations > ComponentsLighting and HornsOpen31.Backup Lamp — Diagram Information and Instructions > Component, Connector, Ground and Splice Locations > ConnectorsLighting and HornsOpen32.Backup Lamp — Diagram Information and Instructions > Component, Connector, Ground and Splice Locations > GroundsLighting and HornsOpen33.Backup Lamp — Diagram Information and Instructions > How to Use DiagramsLighting and HornsOpen34.Backup Lamp — Diagram Information and Instructions > Wire Color Code IdentificationLighting and HornsOpen35.Backup Lamp — Electrical DiagramsLighting and HornsOpen36.Electrical Diagrams > Accessories and Optional Equipment > Antitheft and Alarm SystemsGeneralOpen37.Electrical Diagrams > Accessories and Optional Equipment > Cellular PhoneGeneralOpen38.Electrical Diagrams > Accessories and Optional Equipment > Radio/StereoGeneralOpen39.Electrical Diagrams > Accessories and Optional Equipment > System DiagramGeneralOpen40.Electrical Diagrams > Air Bag Systems > Impact SensorGeneralOpen41.Electrical Diagrams > Antilock Brakes / Traction Control Systems > ABS Main RelayGeneralOpen42.Electrical Diagrams > Antilock Brakes / Traction Control Systems > Electronic Brake Control ModuleGeneralOpen43.Electrical Diagrams > Antilock Brakes / Traction Control Systems > System DiagramGeneralOpen44.Electrical Diagrams > Heating and Air Conditioning > Cabin Temperature Sensor / SwitchGeneralOpen45.Electrical Diagrams > Heating and Air Conditioning > Condenser FanGeneralOpen46.Electrical Diagrams > Heating and Air Conditioning > Evaporator Temperature Sensor / SwitchGeneralOpen47.Electrical Diagrams > Heating and Air Conditioning > Refrigerant Temperature SensorGeneralOpen48.Electrical Diagrams > Heating and Air Conditioning > System DiagramGeneralOpen
Exact Vehicle Hub
Browse →OEM Manual Evidence
Browse →1990 Porsche 944 Testing and InspectionOEM Manual
A L L Diagnostic Trouble Codes ( DTC ): Testing and Inspection — 1990 Porsche 944 S2 Coupe L4-2990cc 3.0L DOHC Service Manual | Operation C...
1990 Porsche 944 Testing and InspectionOEM Manual
A L L Diagnostic Trouble Codes ( DTC ): Testing and Inspection — 1990 Porsche 944 Turbo L4-2479cc 2.5L SOHC Turbo Service Manual | Operatio...
1990 Porsche 944 Testing and InspectionOEM Manual
A L L Diagnostic Trouble Codes ( DTC ): Testing and Inspection — 1990 Porsche 944 S2 Cabriolet L4-2990cc 3.0L DOHC Service Manual | Operati...
1990 Porsche 944 Diagnostic Trouble CodesOEM Manual
Repair and Diagnosis: Diagnostic Trouble Codes — 1990 Porsche 944 S2 Coupe L4-2990cc 3.0L DOHC Service Manual | Operation CHARM Operation C...
More 944 Wiring Pages
Starter Wiring DiagramAlternator Wiring DiagramFuel Pump Wiring DiagramHeadlight Wiring DiagramABS Brake 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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