Wiring Diagram Cluster

1990 Mitsubishi Sigma A/C & Heater Wiring Diagram

Find A/C compressor clutch wiring, blower motor circuits, temperature control module paths, and refrigerant pressure switch schematics.

Open Exact Vehicle Repair HubOpen Interactive Diagram BrowserBrowse All Wiring Diagrams

Matched Diagrams

33

Variant Used

Sigma V6-2972cc 3.0L SOHC

Total Vehicle Diagrams

234

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 Mitsubishi Sigma hub with repairs, specs, codes, and other systems already tied to this car.

View vehicle repair hub →
1990 Mitsubishi Sigma A L L Diagnostic Trouble Codes ( DTC )

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 Mitsubishi Sigma A L L Diagnostic Trouble Codes ( DTC ) →
1990 Mitsubishi Sigma Diagnostic Trouble Codes1990 Mitsubishi Sigma A L L Diagnostic Trouble Codes ( DTC )1990 Mitsubishi Sigma 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 →
Alternator Wiring DiagramFuel Pump Wiring DiagramHeadlight Wiring Diagram

Top A/C & Heater Diagram Paths

1.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Key to Wiring Diagrams and Symbol IdentificationBrakes and Traction ControlOpen2.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Wire Color CodesBrakes and Traction ControlOpen3.Antilock Brakes / Traction Control Systems — Electrical DiagramsBrakes and Traction ControlOpen4.Computers and Control Systems — Vacuum and Vapor Hose Diagrams > CaliforniaPowertrain ManagementOpen5.Computers and Control Systems — Vacuum and Vapor Hose Diagrams > FederalPowertrain ManagementOpen6.Electrical Diagrams > Antilock Brakes / Traction Control SystemsGeneralOpen7.Electrical Diagrams > Audible Warning Device > A/C Mode Control BuzzerGeneralOpen8.Electrical Diagrams > Backup LampGeneralOpen9.Electrical Diagrams > Heating and Air ConditioningGeneralOpen10.Electrical Diagrams > Tachometer > Part 1 of 2GeneralOpen11.Electrical Diagrams > Tachometer > Part 2 of 2GeneralOpen12.Fuel Delivery and Air Induction > Accelerator Pedal — DiagramPowertrain ManagementOpen13.Harness > Back-Up Light Wiring HarnessGeneralOpen14.Mechanical Diagrams > Accelerator PedalGeneralOpen15.Tachometer — Diagram Information and Instructions > Key to Wiring Diagrams and Symbol IdentificationInstrument Panel, Gauges and Warning IndicatorsOpen16.Tachometer — Diagram Information and Instructions > Wire Color CodesInstrument Panel, Gauges and Warning IndicatorsOpen17.Tachometer — Electrical Diagrams > Part 1 of 2Instrument Panel, Gauges and Warning IndicatorsOpen18.Tachometer — Electrical Diagrams > Part 2 of 2Instrument Panel, Gauges and Warning IndicatorsOpen19.Vacuum and Vapor Hose Diagrams > Computers and Control Systems > CaliforniaGeneralOpen20.Vacuum and Vapor Hose Diagrams > Computers and Control Systems > FederalGeneralOpen21.Vacuum and Vapor Hose Diagrams > Emission Control Systems > CaliforniaGeneralOpen22.Vacuum and Vapor Hose Diagrams > Emission Control Systems > California ModelsGeneralOpen23.Vacuum and Vapor Hose Diagrams > Emission Control Systems > FederalGeneralOpen24.Vacuum and Vapor Hose Diagrams > Emission Control Systems > Federal ModelsGeneralOpen25.Vacuum and Vapor Hose Diagrams > Fuel Delivery and Air InductionGeneralOpen26.Antitheft and Alarm Systems — Diagram Information and Instructions > Key to Wiring Diagrams and Symbol IdentificationAccessories and Optional EquipmentOpen27.Antitheft and Alarm Systems — Diagram Information and Instructions > Wire Color CodesAccessories and Optional EquipmentOpen28.Antitheft and Alarm Systems — Electrical Diagrams > Part 1 of 3Accessories and Optional EquipmentOpen29.Antitheft and Alarm Systems — Electrical Diagrams > Part 2 of 3Accessories and Optional EquipmentOpen30.Antitheft and Alarm Systems — Electrical Diagrams > Part 3 of 3Accessories and Optional EquipmentOpen31.Diagram Information and Instructions > Key to Wiring Diagrams and Symbol IdentificationHeating and Air ConditioningOpen32.Diagram Information and Instructions > Wire Color CodesHeating and Air ConditioningOpen33.Electrical DiagramsHeating and Air ConditioningOpen

Exact Vehicle Hub

Browse →
1990 Mitsubishi Sigma Repair HubExact Vehicle

Open the exact vehicle hub for this wiring page to move into repair, manual, and code clusters without leaving the 1990 Mitsubishi Sigma context.

OEM Manual Evidence

Browse →
1990 Mitsubishi Sigma A L L Diagnostic Trouble Codes ( DTC )OEM Manual

A L L Diagnostic Trouble Codes ( DTC ) — 1990 Mitsubishi Sigma V6-2972cc 3.0L SOHC Service Manual | Operation CHARM Operation CHARM : Car r...

1990 Mitsubishi Sigma Diagnostic Trouble CodesOEM Manual

Repair and Diagnosis: Diagnostic Trouble Codes — 1990 Mitsubishi Sigma V6-2972cc 3.0L SOHC Service Manual | Operation CHARM Operation CHARM...

1990 Mitsubishi Sigma A L L Diagnostic Trouble Codes ( DTC )OEM Manual

A L L Diagnostic Trouble Codes ( DTC ) — 1990 Mitsubishi Mirage L4-1597cc 1.6L DOHC Service Manual | Operation CHARM Operation CHARM : Car...

1990 Mitsubishi Sigma A L L Diagnostic Trouble Codes ( DTC )OEM Manual

A L L Diagnostic Trouble Codes ( DTC ) — 1990 Mitsubishi Precis L4-1468cc 1.5L SOHC Service Manual | Operation CHARM Operation CHARM : Car...

More Sigma 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