Wiring Diagram Cluster

1990 Infiniti Q45 Body Electrical Wiring Diagram

Find body control module wiring, door lock circuits, interior lighting paths, and horn/alarm schematics.

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Matched Diagrams

48

Variant Used

Q45 V8-4494cc 4.5L DOHC (VH45)

Total Vehicle Diagrams

515

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OEM source

Factory Manual Evidence

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Diagnostic signal

Codes Often Seen With This System

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

B1318: Battery Voltage Low →

U0140: Lost Communication with Body Control Module

Top Body Electrical Diagram Paths

1.Electrical Diagrams > Lighting and Horns > System Diagram > Lamps > Interior, Spot, Step & TrunkGeneralOpen 2.Doors, Hood and Trunk — Diagnostic Aids > Ground InspectionBody and FrameOpen 3.Doors, Hood and Trunk — Diagnostic Aids > How to Follow/Perform Trouble DiagnosisBody and FrameOpen 4.Doors, Hood and Trunk — Diagnostic Aids > How to Perform Electrical Incident Simulation TestsBody and FrameOpen 5.Doors, Hood and Trunk — Diagnostic Aids > Key to Symbols Signifying Measurements or ProceduresBody and FrameOpen 6.Doors, Hood and Trunk — Diagnostic Aids > Work FlowBody and FrameOpen 7.Doors, Hood and Trunk — Diagram Information and Instructions > Harness Connector DescriptionBody and FrameOpen 8.Doors, Hood and Trunk — Diagram Information and Instructions > How to Read Relay DiagramsBody and FrameOpen 9.Doors, Hood and Trunk — Diagram Information and Instructions > How to Read Wiring DiagramsBody and FrameOpen 10.Doors, Hood and Trunk — Diagram Information and Instructions > Wire Color Code IdentificationBody and FrameOpen 11.Doors, Hood and Trunk — Electrical DiagramsBody and FrameOpen 12.Doors, Hood and Trunk > Fuel Door — Diagnostic Aids > Ground InspectionBody and FrameOpen 13.Doors, Hood and Trunk > Fuel Door — Diagnostic Aids > How to Follow/Perform Trouble DiagnosisBody and FrameOpen 14.Doors, Hood and Trunk > Fuel Door — Diagnostic Aids > How to Perform Electrical Incident Simulation TestsBody and FrameOpen 15.Doors, Hood and Trunk > Fuel Door — Diagnostic Aids > Key to Symbols Signifying Measurements or ProceduresBody and FrameOpen 16.Doors, Hood and Trunk > Fuel Door — Diagnostic Aids > Work FlowBody and FrameOpen 17.Doors, Hood and Trunk > Fuel Door — Diagram Information and Instructions > Harness Connector DescriptionBody and FrameOpen 18.Doors, Hood and Trunk > Fuel Door — Diagram Information and Instructions > How to Read Relay DiagramsBody and FrameOpen 19.Doors, Hood and Trunk > Fuel Door — Diagram Information and Instructions > How to Read Wiring DiagramsBody and FrameOpen 20.Doors, Hood and Trunk > Fuel Door — Diagram Information and Instructions > Wire Color Code IdentificationBody and FrameOpen 21.Doors, Hood and Trunk > Fuel Door — Electrical Diagrams > Fuel Filler Lid OpenerBody and FrameOpen 22.Doors, Hood and Trunk > Fuel Door — Electrical Diagrams > Fuse Panel DetailsBody and FrameOpen 23.Doors, Hood and Trunk > Trunk / Liftgate — Diagnostic Aids > Ground InspectionBody and FrameOpen 24.Doors, Hood and Trunk > Trunk / Liftgate — Diagnostic Aids > How to Follow/Perform Trouble DiagnosisBody and FrameOpen 25.Doors, Hood and Trunk > Trunk / Liftgate — Diagnostic Aids > How to Perform Electrical Incident Simulation TestsBody and FrameOpen 26.Doors, Hood and Trunk > Trunk / Liftgate — Diagnostic Aids > Key to Symbols Signifying Measurements or ProceduresBody and FrameOpen 27.Doors, Hood and Trunk > Trunk / Liftgate — Diagnostic Aids > Work FlowBody and FrameOpen 28.Doors, Hood and Trunk > Trunk / Liftgate — Diagram Information and Instructions > Harness Connector DescriptionBody and FrameOpen 29.Doors, Hood and Trunk > Trunk / Liftgate — Diagram Information and Instructions > How to Read Relay DiagramsBody and FrameOpen 30.Doors, Hood and Trunk > Trunk / Liftgate — Diagram Information and Instructions > How to Read Wiring DiagramsBody and FrameOpen 31.Doors, Hood and Trunk > Trunk / Liftgate — Diagram Information and Instructions > Wire Color Code IdentificationBody and FrameOpen 32.Doors, Hood and Trunk > Trunk / Liftgate — Electrical DiagramsBody and FrameOpen 33.Electrical Diagrams > Lamps > Interior, Spot, Step & TrunkLighting and HornsOpen 34.Horn — Diagnostic Aids > Ground InspectionLighting and HornsOpen 35.Horn — Diagnostic Aids > How to Follow/Perform Trouble DiagnosisLighting and HornsOpen 36.Horn — Diagnostic Aids > How to Perform Electrical Incident Simulation TestsLighting and HornsOpen 37.Horn — Diagnostic Aids > Key to Symbols Signifying Measurements or ProceduresLighting and HornsOpen 38.Horn — Diagnostic Aids > Work FlowLighting and HornsOpen 39.Horn — Diagram Information and Instructions > Harness Connector DescriptionLighting and HornsOpen 40.Horn — Diagram Information and Instructions > How to Read Relay DiagramsLighting and HornsOpen 41.Horn — Diagram Information and Instructions > How to Read Wiring DiagramsLighting and HornsOpen 42.Horn — Diagram Information and Instructions > Wire Color Code IdentificationLighting and HornsOpen 43.Horn — Electrical Diagrams > Fuse Panel DetailsLighting and HornsOpen 44.Horn — Electrical Diagrams > Horn Wiring CircuitLighting and HornsOpen 45.Locks — Electrical Diagrams > Electric Door Lock WiringBody and FrameOpen 46.Electrical Diagrams > Doors, Hood and Trunk > Fuel Door > Fuel Filler Lid OpenerGeneralOpen 47.Electrical Diagrams > Doors, Hood and Trunk > Fuel Door > Fuse Panel DetailsGeneralOpen 48.Electrical Diagrams > Doors, Hood and Trunk > System DiagramGeneralOpen

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Likely Trouble Codes for This System

B1318: Battery Voltage LowCode

Body/Electrical code commonly seen during body electrical diagnosis.

U0140: Lost Communication with Body Control ModuleCode

Network/Communication code commonly seen during body electrical diagnosis.

More Q45 Wiring Pages

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