Wiring Diagram Cluster

1990 Audi 100 Wagon 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

100 Wagon L5-2309cc 2.3L SOHC (NF)

Total Vehicle Diagrams

637

πŸ€– Stuck on this electrical issue?

Wiring diagrams can be a maze. Ask Manuel, our factory-trained AI mechanic, to analyze this circuit or troubleshoot your specific symptom.

Ask AI Mechanic βž”

From Diagram To Fix

Use this wiring page as the jump point, not the dead end

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.

Keep context

Vehicle Repair Hub

Step out of raw diagrams and into the full 1990 Audi 100 Wagon hub with repairs, specs, codes, and other systems already tied to this car.

View vehicle repair hub β†’

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 β†’

Top A/C & Heater Diagram Paths

1.Compressor HVAC β€” DiagramHeating and Air ConditioningOpen2.Electrical Diagrams > Heating and Air Conditioning > Control Assembly, HVACGeneralOpen3.Electrical Diagrams > Heating and Air Conditioning > Control Module HVACGeneralOpen4.Electrical Diagrams > Heating and Air Conditioning > Refrigerant Pressure Sensor / Switch, HVACGeneralOpen5.Exploded Views > Compressor Clutch Diode HVACGeneralOpen6.Exploded Views > Compressor HVACGeneralOpen7.Vacuum and Vapor Hose Diagrams > Heating and Air Conditioning > Electronic Climate ControlGeneralOpen8.Vacuum and Vapor Hose Diagrams > Heating and Air Conditioning > Mechanical Climate ControlGeneralOpen9.Blower Motor β€” Diagram Information and Instructions > Understanding Track Style Wiring Diagrams, Important Stuff !Heating and Air ConditioningOpen10.Sensors and Switches - HVAC > Refrigerant Pressure Sensor / Switch β€” Diagram Information and Instructions > How to Find the Correct Wiring Diagram, Important Stuff !Heating and Air ConditioningOpen11.Sensors and Switches - HVAC > Refrigerant Pressure Sensor / Switch β€” Diagram Information and Instructions > How to Read Displayed Page of Wiring Diagram, Important Stuff !Heating and Air ConditioningOpen12.Sensors and Switches - HVAC > Refrigerant Pressure Sensor / Switch β€” Diagram Information and Instructions > Symbols Used In Wiring DiagramsHeating and Air ConditioningOpen13.Sensors and Switches - HVAC > Refrigerant Pressure Sensor / Switch β€” Diagram Information and Instructions > Understanding Track Style Wiring Diagrams, Important Stuff !Heating and Air ConditioningOpen14.Sensors and Switches - HVAC > Refrigerant Pressure Sensor / Switch β€” Diagram Information and Instructions > Wire Color Code IdentificationHeating and Air ConditioningOpen15.Sensors and Switches - HVAC > Refrigerant Pressure Sensor / Switch β€” Diagram Information and Instructions > Wire Size ConversionHeating and Air ConditioningOpen16.Sensors and Switches - HVAC > Refrigerant Pressure Sensor / Switch β€” Diagram Information and Instructions > Wiring Diagram Circuit IdentificationHeating and Air ConditioningOpen17.Sensors and Switches - HVAC > Refrigerant Pressure Sensor / Switch β€” Electrical DiagramsHeating and Air ConditioningOpen18.Vacuum and Vapor Hose Diagrams > Electronic Climate ControlHeating and Air ConditioningOpen19.Vacuum and Vapor Hose Diagrams > Mechanical Climate ControlHeating and Air ConditioningOpen20.Electrical Diagrams > Heating and Air Conditioning > Blower MotorGeneralOpen21.Electrical Diagrams > Heating and Air Conditioning > Compressor ClutchGeneralOpen22.Exploded Views > Air Door Actuator / Motor, HVACGeneralOpen23.Sensors and Switches - HVAC > Refrigerant Pressure Sensor / Switch β€” Diagram Information and Instructions > How to Find the Correct Wiring Diagram, Important Stuff !Sensors and SwitchesOpen24.Sensors and Switches - HVAC > Refrigerant Pressure Sensor / Switch β€” Diagram Information and Instructions > How to Read Displayed Page of Wiring Diagram, Important Stuff !Sensors and SwitchesOpen25.Sensors and Switches - HVAC > Refrigerant Pressure Sensor / Switch β€” Diagram Information and Instructions > Symbols Used In Wiring DiagramsSensors and SwitchesOpen26.Sensors and Switches - HVAC > Refrigerant Pressure Sensor / Switch β€” Diagram Information and Instructions > Understanding Track Style Wiring Diagrams, Important Stuff !Sensors and SwitchesOpen27.Sensors and Switches - HVAC > Refrigerant Pressure Sensor / Switch β€” Diagram Information and Instructions > Wire Color Code IdentificationSensors and SwitchesOpen28.Sensors and Switches - HVAC > Refrigerant Pressure Sensor / Switch β€” Diagram Information and Instructions > Wire Size ConversionSensors and SwitchesOpen29.Sensors and Switches - HVAC > Refrigerant Pressure Sensor / Switch β€” Diagram Information and Instructions > Wiring Diagram Circuit IdentificationSensors and SwitchesOpen30.Sensors and Switches - HVAC > Refrigerant Pressure Sensor / Switch β€” Electrical DiagramsSensors and SwitchesOpen31.Vacuum and Vapor Hose Diagrams > Heating and Air Conditioning > IdentificationGeneralOpen32.Vacuum and Vapor Hose Diagrams > Heating and Air Conditioning > Vacuum CircuitGeneralOpen33.Antilock Brakes / Traction Control Systems β€” Diagram Information and Instructions > How to Find the Correct Wiring Diagram, Important Stuff !Brakes and Traction ControlOpen34.Antilock Brakes / Traction Control Systems β€” Diagram Information and Instructions > How to Read Displayed Page of Wiring Diagram, Important Stuff !Brakes and Traction ControlOpen35.Antilock Brakes / Traction Control Systems β€” Diagram Information and Instructions > Symbols Used In Wiring DiagramsBrakes and Traction ControlOpen36.Antilock Brakes / Traction Control Systems β€” Diagram Information and Instructions > Understanding Track Style Wiring Diagrams, Important Stuff !Brakes and Traction ControlOpen37.Antilock Brakes / Traction Control Systems β€” Diagram Information and Instructions > Wire Color Code IdentificationBrakes and Traction ControlOpen38.Antilock Brakes / Traction Control Systems β€” Diagram Information and Instructions > Wire Size ConversionBrakes and Traction ControlOpen39.Antilock Brakes / Traction Control Systems β€” Diagram Information and Instructions > Wiring Diagram Circuit IdentificationBrakes and Traction ControlOpen40.Antilock Brakes / Traction Control Systems β€” Electrical DiagramsBrakes and Traction ControlOpen41.Antitheft and Alarm Systems β€” Diagram Information and Instructions > Understanding Track Style Wiring Diagrams, Important Stuff !Accessories and Optional EquipmentOpen42.Blower Motor β€” Diagram Information and Instructions > How to Find the Correct Wiring Diagram, Important Stuff !Heating and Air ConditioningOpen43.Blower Motor β€” Diagram Information and Instructions > How to Read Displayed Page of Wiring Diagram, Important Stuff !Heating and Air ConditioningOpen44.Blower Motor β€” Diagram Information and Instructions > Symbols Used In Wiring DiagramsHeating and Air ConditioningOpen45.Blower Motor β€” Diagram Information and Instructions > Wire Color Code IdentificationHeating and Air ConditioningOpen46.Blower Motor β€” Diagram Information and Instructions > Wire Size ConversionHeating and Air ConditioningOpen47.Blower Motor β€” Diagram Information and Instructions > Wiring Diagram Circuit IdentificationHeating and Air ConditioningOpen48.Blower Motor β€” Electrical DiagramsHeating and Air ConditioningOpen

Parts & Tools for This Job

Common parts shoppers buy for 1990 Audi 100 Wagon A/C & Heater.

As an Amazon Associate, AllOEMManuals earns from qualifying purchases. Prices and availability may vary.

Factory Service Tools

Turn This Into a Confident Next Step

Verify the likely fault first, then compare a quote before you approve expensive work.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.