Wiring Diagram Cluster
1988 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
445
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.
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Vehicle Repair Hub
Step out of raw diagrams and into the full 1988 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.
1988 Volvo 740 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 LocationsHeating and Air ConditioningOpen4.Compressor HVAC — Diagram Information and Instructions > How to Read Diagrams/LocationsHeating and Air ConditioningOpen5.Compressor HVAC — Diagram Information and Instructions > Wire Color Code IdentificationHeating 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 > How to Read Diagrams/LocationsHeating and Air ConditioningOpen15.Sensors and Switches - HVAC > Refrigerant Pressure Sensor / Switch — Diagram Information and Instructions > Wire Color Code IdentificationHeating 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 > Automatic Climate ControlGeneralOpen21.Electrical Diagrams > Heating and Air Conditioning > System Diagram > CU HeaterGeneralOpen22.Sensors and Switches - HVAC > Refrigerant Pressure Sensor / Switch — Diagram Information and Instructions > Component LocationsSensors and SwitchesOpen23.Sensors and Switches - HVAC > Refrigerant Pressure Sensor / Switch — Diagram Information and Instructions > How to Read Diagrams/LocationsSensors and SwitchesOpen24.Sensors and Switches - HVAC > Refrigerant Pressure Sensor / Switch — Diagram Information and Instructions > Wire Color Code IdentificationSensors and SwitchesOpen25.Sensors and Switches - HVAC > Refrigerant Pressure Sensor / Switch — Electrical DiagramsSensors and SwitchesOpen26.Vacuum and Vapor Hose Diagrams > Heating and Air Conditioning > System DiagramGeneralOpen27.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Component LocationsBrakes and Traction ControlOpen28.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > How to Read Diagrams/LocationsBrakes and Traction ControlOpen29.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Wire Color Code IdentificationBrakes and Traction ControlOpen30.Antilock Brakes / Traction Control Systems — Electrical DiagramsBrakes and Traction ControlOpen31.Electrical Diagrams > Air ConditioningHeating and Air ConditioningOpen32.Electrical Diagrams > Automatic Climate ControlHeating and Air ConditioningOpen33.Electrical Diagrams > CU HeaterHeating and Air ConditioningOpen34.Vacuum and Vapor Hose DiagramsHeating and Air ConditioningOpen35.Backup Lamp — Diagram Information and Instructions > Component LocationsLighting and HornsOpen36.Backup Lamp — Diagram Information and Instructions > How to Read Diagrams/LocationsLighting and HornsOpen37.Backup Lamp — Diagram Information and Instructions > Wire Color Code IdentificationLighting and HornsOpen38.Backup Lamp — Electrical DiagramsLighting and HornsOpen39.Components > Cruise Control Vacuum Pump and RegulatorGeneralOpen40.Components > Cruise Control Vacuum ServoGeneralOpen41.Electrical Diagrams > Antilock Brakes / Traction Control Systems > ABS LightGeneralOpen42.Electrical Diagrams > Antilock Brakes / Traction Control Systems > ABS Main RelayGeneralOpen43.Electrical Diagrams > Antilock Brakes / Traction Control Systems > Braking Sensor/SwitchGeneralOpen44.Electrical Diagrams > Antilock Brakes / Traction Control Systems > Electronic Brake Control ModuleGeneralOpen45.Electrical Diagrams > Antilock Brakes / Traction Control Systems > System DiagramGeneralOpen46.Electrical Diagrams > Antilock Brakes / Traction Control Systems > Wheel Speed SensorGeneralOpen47.Electrical Diagrams > Back-Up LightsLighting and HornsOpen48.Electrical Diagrams > Cruise Control > Vacuum Pump, Cruise ControlGeneralOpen
Exact Vehicle Hub
Browse →OEM Manual Evidence
Browse →1988 Volvo 740 Testing and InspectionOEM Manual
A L L Diagnostic Trouble Codes ( DTC ): Testing and Inspection — 1988 Volvo 740 L4-2320cc 2.3L SOHC Turbo VIN 87 B230FT Service Manual | Op...
1988 Volvo 740 Testing and InspectionOEM Manual
A L L Diagnostic Trouble Codes ( DTC ): Testing and Inspection — 1988 Volvo 740 L4-2.3L SOHC VIN 88 B230F Service Manual | Operation CHARM...
1988 Volvo 740 Diagnostic Trouble CodesOEM Manual
Repair and Diagnosis: Diagnostic Trouble Codes — 1988 Volvo 740 L4-2320cc 2.3L SOHC Turbo VIN 87 B230FT Service Manual | Operation CHARM Op...
1988 Volvo 740 Diagnostic Trouble CodesOEM Manual
Repair and Diagnosis: Diagnostic Trouble Codes — 1988 Volvo 740 L4-2.3L SOHC VIN 88 B230F Service Manual | Operation CHARM Operation CHARM...
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
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