Wiring Diagram Cluster

1991 Acura Legend Coupe Engine Management Wiring Diagram

Find ECU/PCM wiring, fuel injector circuits, ignition coil paths, and oxygen sensor schematics for engine diagnostics.

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Matched Diagrams

48

Variant Used

Legend Coupe V6-3206cc 3.2L SOHC FI

Total Vehicle Diagrams

1515

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1991 Acura Legend Coupe Application and ID

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 Acura Legend Coupe Application and ID →
1991 Acura Legend Coupe A L L Diagnostic Trouble Codes ( DTC )1991 Acura Legend Coupe How to Find Technical Service Bulletins by Category/Symptom1991 Acura Legend Coupe Application and ID

Diagnostic signal

Codes Often Seen With This System

Use the code cluster when wiring faults overlap with check-engine or module-level diagnostics.

P0301: Cylinder 1 Misfire Detected →
P0030: HO2S Heater Control Circuit (Bank 1, Sensor 1)P0300: Random/Multiple Cylinder Misfire DetectedP0351: Ignition Coil A Primary/Secondary Circuit

Top Engine Management Diagram Paths

1.Vacuum and Vapor Hose Diagrams > Powertrain Management > Computers and Control Systems > System Diagram > Vacuum Connections Engine CompartmentGeneralOpen2.Computers and Control Systems — Vacuum and Vapor Hose Diagrams > Vacuum Connections Engine CompartmentPowertrain ManagementOpen3.Engine > Timing Components — DiagramEngine, Cooling and ExhaustOpen4.Engine > Tune-up and Engine Performance Checks > Fuel Filter — DiagramEngine, Cooling and ExhaustOpen5.Fuel Delivery and Air Induction > Fuel Injector — DiagramPowertrain ManagementOpen6.Tune-up and Engine Performance Checks > Fuel Filter — DiagramPowertrain ManagementOpen7.Connector Views > Engine Control ModuleGeneralOpen8.Electrical Diagrams > Computers and Control Systems > Engine Control ModuleGeneralOpen9.Electrical Diagrams > Computers and Control Systems > Oxygen Sensor > CoupeGeneralOpen10.Electrical Diagrams > Computers and Control Systems > Oxygen Sensor > SedanGeneralOpen11.Electrical Diagrams > Computers and Control Systems > Throttle Position SensorGeneralOpen12.Electrical Diagrams > Fuel Delivery and Air Induction > Fuel Injector ResistorGeneralOpen13.Exploded Views > Engine MountGeneralOpen14.Exploded Views > Oil Cooler, EngineGeneralOpen15.Exploded Views > Oil Filter, EngineGeneralOpen16.Exploded Views > Oil Pan, EngineGeneralOpen17.Fluid Diagrams > Fuel InjectorGeneralOpen18.Harness > Engine Compartment Wire HarnessGeneralOpen19.Harness > Engine Wire HarnessGeneralOpen20.Harness > Main Wire Harness > Right Side of Engine Compartment BranchGeneralOpen21.Tune-up and Engine Performance Checks > Fuel Filter — DiagramMaintenanceOpen22.Vacuum and Vapor Hose Diagrams > Powertrain Management > Computers and Control Systems > Crankshaft Position SensorGeneralOpen23.Vacuum and Vapor Hose Diagrams > Powertrain Management > Computers and Control Systems > System Diagram > General Vacuum and Vapor DiagramGeneralOpen24.Vacuum and Vapor Hose Diagrams > Powertrain Management > Computers and Control Systems > System Diagram > Vacuum Connections Control BoxGeneralOpen25.Vacuum and Vapor Hose Diagrams > Powertrain Management > Emission Control Systems > Exhaust Gas RecirculationGeneralOpen26.Vacuum and Vapor Hose Diagrams > Powertrain Management > Emission Control Systems > Positive Crankcase VentilationGeneralOpen27.Vacuum and Vapor Hose Diagrams > Powertrain Management > Emission Control Systems > System DiagramGeneralOpen28.Vacuum and Vapor Hose Diagrams > Powertrain Management > Fuel Delivery and Air Induction > Fuel PumpGeneralOpen29.Vacuum and Vapor Hose Diagrams > Powertrain Management > Fuel Delivery and Air Induction > System DiagramGeneralOpen30.Vacuum and Vapor Hose Diagrams > Powertrain Management > System DiagramGeneralOpen31.Computers and Control Systems — Diagnostic Aids > Continuity and Resistance CheckPowertrain ManagementOpen32.Computers and Control Systems — Diagnostic Aids > Damage Precautions > Electrical Precautions > Battery PrecautionsPowertrain ManagementOpen33.Computers and Control Systems — Diagnostic Aids > Damage Precautions > Electrical Precautions > Electrical Connections and CircuitsPowertrain ManagementOpen34.Computers and Control Systems — Diagnostic Aids > Damage Precautions > Electrical Precautions > Electronic Component HandlingPowertrain ManagementOpen35.Computers and Control Systems — Diagnostic Aids > Damage Precautions > Electrical Precautions > Electronic Component ReplacementPowertrain ManagementOpen36.Computers and Control Systems — Diagnostic Aids > Damage Precautions > Electrical Precautions > Electrostatic DischargePowertrain ManagementOpen37.Computers and Control Systems — Diagnostic Aids > Damage Precautions > Proper Tools and Testing ProceduresPowertrain ManagementOpen38.Computers and Control Systems — Diagnostic Aids > Finding Short CircuitsPowertrain ManagementOpen39.Computers and Control Systems — Diagnostic Aids > Five Step TroubleshootingPowertrain ManagementOpen40.Computers and Control Systems — Diagnostic Aids > Troubleshooting PrecautionsPowertrain ManagementOpen41.Computers and Control Systems — Diagnostic Aids > Troubleshooting Tests > Testing For A Short With A Self-Powered Test Light or DVOMPowertrain ManagementOpen42.Computers and Control Systems — Diagnostic Aids > Troubleshooting Tests > Testing For a Short With a Short Circuit Locator (Short Finder)Powertrain ManagementOpen43.Computers and Control Systems — Diagnostic Aids > Troubleshooting Tests > Testing For Voltage Drop/Short to Ground With Test Light/DVOMPowertrain ManagementOpen44.Computers and Control Systems — Diagnostic Aids > Troubleshooting Tests > Testing For Voltage/ContinuityPowertrain ManagementOpen45.Computers and Control Systems — Diagnostic Aids > Voltage CheckPowertrain ManagementOpen46.Computers and Control Systems — Diagnostic Aids > Wire Repair Procedures > Circuit Protection DevicesPowertrain ManagementOpen47.Computers and Control Systems — Diagnostic Aids > Wire Repair Procedures > Repairing ConnectorsPowertrain ManagementOpen48.Computers and Control Systems — Diagnostic Aids > Wire Repair Procedures > Splicing Copper Wire Using Crimp and Seal Splice SleevesPowertrain ManagementOpen

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OEM Manual Evidence

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1991 Acura Legend Coupe Application and IDOEM Manual

Repair and Diagnosis: Application and ID — 1991 Acura Legend Coupe V6-3206cc 3.2L SOHC FI Service Manual | Operation CHARM Operation CHARM...

1991 Acura Legend Coupe A L L Diagnostic Trouble Codes ( DTC )OEM Manual

A L L Diagnostic Trouble Codes ( DTC ) — 1991 Acura Legend Coupe V6-3206cc 3.2L SOHC FI Service Manual | Operation CHARM Operation CHARM :...

1991 Acura Legend Coupe How to Find Technical Service Bulletins by Category/SymptomOEM Manual

How to Find Technical Service Bulletins by Category/Symptom — 1991 Acura Legend Coupe V6-3206cc 3.2L SOHC FI Service Manual | Operation CHA...

1991 Acura Legend Coupe Application and IDOEM Manual

Repair and Diagnosis: Application and ID — 1991 Acura Legend Sedan V6-3206cc 3.2L SOHC FI Service Manual | Operation CHARM Operation CHARM...

Likely Trouble Codes for This System

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P0301: Cylinder 1 Misfire DetectedCode

Ignition code commonly seen during engine management diagnosis.

P0030: HO2S Heater Control Circuit (Bank 1, Sensor 1)Code

Emissions code commonly seen during engine management diagnosis.

P0300: Random/Multiple Cylinder Misfire DetectedCode

Ignition code commonly seen during engine management diagnosis.

P0351: Ignition Coil A Primary/Secondary CircuitCode

Ignition code commonly seen during engine management diagnosis.

P0352: Ignition Coil B Primary/Secondary CircuitCode

Ignition code commonly seen during engine management diagnosis.

P0353: Ignition Coil C Primary/Secondary CircuitCode

Ignition code commonly seen during engine management diagnosis.

More Legend Coupe Wiring Pages

Starter Wiring DiagramAlternator Wiring DiagramHeadlight Wiring DiagramABS Brake Wiring DiagramA/C & Heater Wiring DiagramPower Window Wiring DiagramInstrument Cluster Wiring DiagramWiper & Washer Wiring DiagramTransmission Wiring DiagramCruise Control Wiring DiagramAirbag SRS Wiring DiagramBody Electrical Wiring Diagram

Same System, Other Vehicles

1990 Acura Integra Engine Management Wiring Diagram1990 Acura Legend Engine Management Wiring Diagram1993 Acura NSX Engine Management Wiring Diagram1993 Acura Vigor Engine Management Wiring Diagram1996 Acura RL Engine Management Wiring Diagram1996 Acura TL Engine Management Wiring Diagram2002 Acura CL Engine Management Wiring Diagram2005 Acura RSX Engine Management Wiring Diagram