Wiring Diagram Cluster
1991 Infiniti Q45 Body Electrical Wiring Diagram
Find body control module wiring, door lock circuits, interior lighting paths, and horn/alarm schematics.
Matched Diagrams
48
Variant Used
Q45 V8-4494cc 4.5L DOHC (VH45)
Total Vehicle Diagrams
559
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 1991 Infiniti Q45 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.
Open interactive browser →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 →Top Body Electrical Diagram Paths
1.Electrical Diagrams > Lighting and Horns > System Diagram > Interior Lamps > TrunkGeneralOpen2.Doors, Hood and Trunk — Diagnostic Aids > Ground InspectionBody and FrameOpen3.Doors, Hood and Trunk — Diagnostic Aids > How to Follow/Perform Trouble DiagnosisBody and FrameOpen4.Doors, Hood and Trunk — Diagnostic Aids > How to Perform Electrical Incident Simulation TestsBody and FrameOpen5.Doors, Hood and Trunk — Diagnostic Aids > Key to Symbols Signifying Measurements or ProceduresBody and FrameOpen6.Doors, Hood and Trunk — Diagnostic Aids > Work FlowBody and FrameOpen7.Doors, Hood and Trunk — Diagram Information and Instructions > Harness Connector DescriptionBody and FrameOpen8.Doors, Hood and Trunk — Diagram Information and Instructions > How to Read Relay DiagramsBody and FrameOpen9.Doors, Hood and Trunk — Diagram Information and Instructions > How to Read Wiring DiagramsBody and FrameOpen10.Doors, Hood and Trunk — Diagram Information and Instructions > Wire Color Code IdentificationBody and FrameOpen11.Doors, Hood and Trunk — Electrical DiagramsBody and FrameOpen12.Electrical Diagrams > Interior Lamps > TrunkLighting and HornsOpen13.Horn — Diagnostic Aids > Ground InspectionLighting and HornsOpen14.Horn — Diagnostic Aids > How to Follow/Perform Trouble DiagnosisLighting and HornsOpen15.Horn — Diagnostic Aids > How to Perform Electrical Incident Simulation TestsLighting and HornsOpen16.Horn — Diagnostic Aids > Key to Symbols Signifying Measurements or ProceduresLighting and HornsOpen17.Horn — Diagnostic Aids > Work FlowLighting and HornsOpen18.Horn — Diagram Information and Instructions > Harness Connector DescriptionLighting and HornsOpen19.Horn — Diagram Information and Instructions > How to Read Relay DiagramsLighting and HornsOpen20.Horn — Diagram Information and Instructions > How to Read Wiring DiagramsLighting and HornsOpen21.Horn — Diagram Information and Instructions > Wire Color Code IdentificationLighting and HornsOpen22.Horn — Electrical Diagrams > Fuse Panel DetailsLighting and HornsOpen23.Horn — Electrical Diagrams > Horn Wiring CircuitLighting and HornsOpen24.Locks — Electrical Diagrams > Electric Door Lock WiringBody and FrameOpen25.Connectors > Body Main Harness and ConnectorsGeneralOpen26.Electrical Diagrams > Doors, Hood and Trunk > Fuel Door > Fuel Filler Lid OpenerGeneralOpen27.Electrical Diagrams > Doors, Hood and Trunk > Fuel Door > Fuse Panel DetailsGeneralOpen28.Electrical Diagrams > Doors, Hood and Trunk > System DiagramGeneralOpen29.Electrical Diagrams > Doors, Hood and Trunk > Trunk / LiftgateGeneralOpen30.Electrical Diagrams > Ground Distribution > T15 (Trunk Harness)Power and Ground DistributionOpen31.Electrical Diagrams > Ground Distribution > T38 and B34 (Tail and Body Harness)Power and Ground DistributionOpen32.Electrical Diagrams > Lighting and Horns > Horn > Fuse Panel DetailsGeneralOpen33.Electrical Diagrams > Lighting and Horns > Horn > Horn Wiring CircuitGeneralOpen34.Electrical Diagrams > Lighting and Horns > License Plate BulbGeneralOpen35.Electrical Diagrams > Lighting and Horns > System Diagram > Exterior & Cornering Lamp > Back-UpGeneralOpen36.Electrical Diagrams > Lighting and Horns > System Diagram > Exterior & Cornering Lamp > ClearanceGeneralOpen37.Electrical Diagrams > Lighting and Horns > System Diagram > Exterior & Cornering Lamp > HazardGeneralOpen38.Electrical Diagrams > Lighting and Horns > System Diagram > Exterior & Cornering Lamp > HeadlampsGeneralOpen39.Electrical Diagrams > Lighting and Horns > System Diagram > Exterior & Cornering Lamp > LicenseGeneralOpen40.Electrical Diagrams > Lighting and Horns > System Diagram > Exterior & Cornering Lamp > StopGeneralOpen41.Electrical Diagrams > Lighting and Horns > System Diagram > Exterior & Cornering Lamp > TailGeneralOpen42.Electrical Diagrams > Lighting and Horns > System Diagram > Exterior & Cornering Lamp > TurnGeneralOpen43.Electrical Diagrams > Lighting and Horns > System Diagram > Fuse Panel DetailsGeneralOpen44.Electrical Diagrams > Lighting and Horns > System Diagram > Interior Lamps > CourtesyGeneralOpen45.Electrical Diagrams > Lighting and Horns > System Diagram > Interior Lamps > FootGeneralOpen46.Electrical Diagrams > Lighting and Horns > System Diagram > Interior Lamps > Illumination Entry SystemGeneralOpen47.Electrical Diagrams > Lighting and Horns > System Diagram > Interior Lamps > Instrument Panel and Switch IlluminationGeneralOpen48.Electrical Diagrams > Lighting and Horns > System Diagram > Interior Lamps > InteriorGeneralOpen
Exact Vehicle Hub
Browse →Likely Trouble Codes for This System
Browse →More Q45 Wiring Pages
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