Wiring Diagram Cluster
1991 Volvo 740 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
740 L4-2.3L SOHC VIN 88 B230F
Total Vehicle Diagrams
499
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 1991 Volvo 740 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.
1991 Volvo 740 Diagnostic Trouble Codes →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 LocationsHeating and Air ConditioningOpen4.Compressor HVAC — Diagram Information and Instructions > Connector LocationsHeating and Air ConditioningOpen5.Compressor HVAC — Diagram Information and Instructions > How to Use the DiagramsHeating and Air ConditioningOpen6.Compressor HVAC — Electrical DiagramsHeating and Air ConditioningOpen7.Electrical Diagrams > Heating and Air Conditioning > Ambient Temperature Sensor / Switch HVACGeneralOpen8.Electrical Diagrams > Heating and Air Conditioning > Control Module HVACGeneralOpen9.Electrical Diagrams > Heating and Air Conditioning > Coolant Temperature Sensor / Switch HVACGeneralOpen10.Electrical Diagrams > Heating and Air Conditioning > Refrigerant Pressure Sensor / Switch, HVACGeneralOpen11.Electrical Diagrams > Heating and Air Conditioning > System Relay, HVACGeneralOpen12.Vacuum and Vapor Hose Diagrams > Heating and Air Conditioning > Vacuum Solenoid Valve HVACGeneralOpen13.Sensors and Switches - HVAC > Refrigerant Pressure Sensor / Switch — Diagram Information and Instructions > Component LocationsHeating and Air ConditioningOpen14.Sensors and Switches - HVAC > Refrigerant Pressure Sensor / Switch — Diagram Information and Instructions > Connector LocationsHeating and Air ConditioningOpen15.Sensors and Switches - HVAC > Refrigerant Pressure Sensor / Switch — Diagram Information and Instructions > How to Use the DiagramsHeating and Air ConditioningOpen16.Sensors and Switches - HVAC > Refrigerant Pressure Sensor / Switch — Electrical DiagramsHeating and Air ConditioningOpen17.Electrical Diagrams > Heating and Air Conditioning > Blower MotorGeneralOpen18.Electrical Diagrams > Heating and Air Conditioning > Blower Motor RelayGeneralOpen19.Electrical Diagrams > Heating and Air Conditioning > Blower Motor ResistorGeneralOpen20.Electrical Diagrams > Heating and Air Conditioning > System Diagram > AC Full Load Cut-Out System, (B234F/G, B204E)GeneralOpen21.Electrical Diagrams > Heating and Air Conditioning > System Diagram > Electronic Climate ControlGeneralOpen22.Electrical Diagrams > Heating and Air Conditioning > System Diagram > Heater Fan (Standard)GeneralOpen23.Electrical Diagrams > Heating and Air Conditioning > System Diagram > Manual Climate Control (MCC)GeneralOpen24.Sensors and Switches - HVAC > Refrigerant Pressure Sensor / Switch — Diagram Information and Instructions > Component LocationsSensors and SwitchesOpen25.Sensors and Switches - HVAC > Refrigerant Pressure Sensor / Switch — Diagram Information and Instructions > Connector LocationsSensors and SwitchesOpen26.Sensors and Switches - HVAC > Refrigerant Pressure Sensor / Switch — Diagram Information and Instructions > How to Use the DiagramsSensors and SwitchesOpen27.Sensors and Switches - HVAC > Refrigerant Pressure Sensor / Switch — Electrical DiagramsSensors and SwitchesOpen28.Vacuum and Vapor Hose Diagrams > Heating and Air Conditioning > System DiagramGeneralOpen29.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Component LocationsBrakes and Traction ControlOpen30.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Connector LocationsBrakes and Traction ControlOpen31.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > How to Use the DiagramsBrakes and Traction ControlOpen32.Antilock Brakes / Traction Control Systems — Electrical DiagramsBrakes and Traction ControlOpen33.Electrical Diagrams > AC Full Load Cut-Out System, (B234F/G, B204E)Heating and Air ConditioningOpen34.Electrical Diagrams > Electronic Climate ControlHeating and Air ConditioningOpen35.Electrical Diagrams > Heater Fan (Standard)Heating and Air ConditioningOpen36.Electrical Diagrams > Manual Climate Control (MCC)Heating and Air ConditioningOpen37.Vacuum and Vapor Hose DiagramsHeating and Air ConditioningOpen38.Backup Lamp — Diagram Information and Instructions > Component LocationsLighting and HornsOpen39.Backup Lamp — Diagram Information and Instructions > Connector LocationsLighting and HornsOpen40.Backup Lamp — Diagram Information and Instructions > How to Use the DiagramsLighting and HornsOpen41.Backup Lamp — Electrical DiagramsLighting and HornsOpen42.Components > Cruise Control Vacuum Pump and RegulatorGeneralOpen43.Components > Cruise Control Vacuum ServoGeneralOpen44.Computers and Control Systems — Vacuum and Vapor Hose DiagramsPowertrain ManagementOpen45.Electrical Diagrams > Air Bag Systems > Impact SensorGeneralOpen46.Electrical Diagrams > Antilock Brakes / Traction Control Systems > Electronic Brake Control ModuleGeneralOpen47.Electrical Diagrams > Antilock Brakes / Traction Control Systems > Hydraulic Control Assembly - Antilock BrakesGeneralOpen48.Electrical Diagrams > Antilock Brakes / Traction Control Systems > System DiagramGeneralOpen
Exact Vehicle Hub
Browse →OEM Manual Evidence
Browse →1991 Volvo 740 Diagnostic Trouble CodesOEM Manual
Repair and Diagnosis: Diagnostic Trouble Codes — 1991 Volvo 740 L4-2.3L SOHC VIN 88 B230F Service Manual | Operation CHARM Operation CHARM...
1991 Volvo 740 Diagnostic Trouble CodesOEM Manual
Repair and Diagnosis: Diagnostic Trouble Codes — 1991 Volvo 740 L4-2320cc 2.3L SOHC Turbo VIN 87 B230FT Service Manual | Operation CHARM Op...
1991 Volvo 740 A L L Diagnostic Trouble Codes ( DTC )OEM Manual
A L L Diagnostic Trouble Codes ( DTC ) — 1991 Volvo 740 L4-2.3L SOHC VIN 88 B230F Service Manual | Operation CHARM Operation CHARM : Car re...
1991 Volvo 740 A L L Diagnostic Trouble Codes ( DTC )OEM Manual
A L L Diagnostic Trouble Codes ( DTC ) — 1991 Volvo 740 L4-2320cc 2.3L SOHC Turbo VIN 87 B230FT Service Manual | Operation CHARM Operation...
More 740 Wiring Pages
Starter Wiring DiagramAlternator 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
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