Wiring Diagram Cluster
2003 Infiniti Q45 Fuel Pump Wiring Diagram
Find fuel-pump power and control wiring, relay paths, and fuel-level sender references to speed up no-start diagnosis.
Matched Diagrams
48
Variant Used
Q45 V8-4.5L (VK45DE)
Total Vehicle Diagrams
1415
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 2003 Infiniti Q45 hub with repairs, specs, codes, and other systems already tied to this car.
View vehicle repair hub →Likely fix path
Exact Repair Guides
These repair flows most often intersect with fuel pump diagnosis on this exact vehicle.
Fuel Pump Replacement →Diagnostic signal
Codes Often Seen With This System
Use the code cluster when wiring faults overlap with check-engine or module-level diagnostics.
P0192: Fuel Rail Pressure Sensor Circuit Low →Top Fuel Pump Diagram Paths
1.Electrical Diagrams > Powertrain Management > Fuel Delivery and Air Induction > Fuel Pump > Fuel Pump Control UnitGeneralOpen2.Electrical Diagrams > Powertrain Management > Fuel Delivery and Air Induction > Fuel Pump > System DiagramGeneralOpen3.Fuel Delivery and Air Induction > Fuel Pump — Diagnostic Aids > CONSULT-II Checking SystemPowertrain ManagementOpen4.Fuel Delivery and Air Induction > Fuel Pump — Diagnostic Aids > Ground InspectionPowertrain ManagementOpen5.Fuel Delivery and Air Induction > Fuel Pump — Diagnostic Aids > How to Check TerminalsPowertrain ManagementOpen6.Fuel Delivery and Air Induction > Fuel Pump — Diagnostic Aids > How to Follow/Perform Trouble DiagnosisPowertrain ManagementOpen7.Fuel Delivery and Air Induction > Fuel Pump — Diagnostic Aids > How to Perform Electrical Incident Simulation TestsPowertrain ManagementOpen8.Fuel Delivery and Air Induction > Fuel Pump — Diagnostic Aids > Key to Symbols Signifying Measurements or ProceduresPowertrain ManagementOpen9.Fuel Delivery and Air Induction > Fuel Pump — Diagnostic Aids > Work FlowPowertrain ManagementOpen10.Fuel Delivery and Air Induction > Fuel Pump — Diagram Information and Instructions > Harness Connector DescriptionPowertrain ManagementOpen11.Fuel Delivery and Air Induction > Fuel Pump — Diagram Information and Instructions > How To Read Harness LayoutPowertrain ManagementOpen12.Fuel Delivery and Air Induction > Fuel Pump — Diagram Information and Instructions > How to Read Relay DiagramsPowertrain ManagementOpen13.Fuel Delivery and Air Induction > Fuel Pump — Diagram Information and Instructions > How to Read Wiring DiagramsPowertrain ManagementOpen14.Fuel Delivery and Air Induction > Fuel Pump — Diagram Information and Instructions > Key to Symbols Used In IllustrationsPowertrain ManagementOpen15.Fuel Delivery and Air Induction > Fuel Pump — Diagram Information and Instructions > Wire Color Code IdentificationPowertrain ManagementOpen16.Fuel Delivery and Air Induction > Fuel Pump — Diagram Information and Instructions > Wiring Diagram CodesPowertrain ManagementOpen17.Fuel Delivery and Air Induction > Fuel Pump — Electrical DiagramsPowertrain ManagementOpen18.Electrical Diagrams > Powertrain Management > Fuel Delivery and Air Induction > Fuel InjectorGeneralOpen19.Electrical Diagrams > Powertrain Management > Fuel Delivery and Air Induction > Fuel Temperature SensorGeneralOpen20.Electrical Diagrams > Powertrain Management > Fuel Delivery and Air Induction > System Diagram > EC-FUELB1GeneralOpen21.Electrical Diagrams > Powertrain Management > Fuel Delivery and Air Induction > System Diagram > EC-FUELB2GeneralOpen22.Electrical Diagrams > Powertrain Management > Fuel Delivery and Air Induction > Variable Induction SystemGeneralOpen23.Electrical Diagrams > Powertrain Management > Fuel Level SensorGeneralOpen24.Fuel Delivery and Air Induction — Diagnostic Aids > CONSULT-II Checking SystemPowertrain ManagementOpen25.Fuel Delivery and Air Induction — Diagnostic Aids > Ground InspectionPowertrain ManagementOpen26.Fuel Delivery and Air Induction — Diagnostic Aids > How to Check TerminalsPowertrain ManagementOpen27.Fuel Delivery and Air Induction — Diagnostic Aids > How to Follow/Perform Trouble DiagnosisPowertrain ManagementOpen28.Fuel Delivery and Air Induction — Diagnostic Aids > How to Perform Electrical Incident Simulation TestsPowertrain ManagementOpen29.Fuel Delivery and Air Induction — Diagnostic Aids > Key to Symbols Signifying Measurements or ProceduresPowertrain ManagementOpen30.Fuel Delivery and Air Induction — Diagnostic Aids > Work FlowPowertrain ManagementOpen31.Fuel Delivery and Air Induction — Diagram Information and Instructions > Harness Connector DescriptionPowertrain ManagementOpen32.Fuel Delivery and Air Induction — Diagram Information and Instructions > How To Read Harness LayoutPowertrain ManagementOpen33.Fuel Delivery and Air Induction — Diagram Information and Instructions > How to Read Relay DiagramsPowertrain ManagementOpen34.Fuel Delivery and Air Induction — Diagram Information and Instructions > How to Read Wiring DiagramsPowertrain ManagementOpen35.Fuel Delivery and Air Induction — Diagram Information and Instructions > Key to Symbols Used In IllustrationsPowertrain ManagementOpen36.Fuel Delivery and Air Induction — Diagram Information and Instructions > Wire Color Code IdentificationPowertrain ManagementOpen37.Fuel Delivery and Air Induction — Diagram Information and Instructions > Wiring Diagram CodesPowertrain ManagementOpen38.Fuel Delivery and Air Induction — Electrical Diagrams > EC-FUELB1Powertrain ManagementOpen39.Fuel Delivery and Air Induction — Electrical Diagrams > EC-FUELB2Powertrain ManagementOpen40.Fuel Delivery and Air Induction — Vacuum and Vapor Hose DiagramsPowertrain ManagementOpen41.Fuel Delivery and Air Induction > Variable Induction System — Diagnostic Aids > CONSULT-II Checking SystemPowertrain ManagementOpen42.Fuel Delivery and Air Induction > Variable Induction System — Diagnostic Aids > Ground InspectionPowertrain ManagementOpen43.Fuel Delivery and Air Induction > Variable Induction System — Diagnostic Aids > How to Check TerminalsPowertrain ManagementOpen44.Fuel Delivery and Air Induction > Variable Induction System — Diagnostic Aids > How to Follow/Perform Trouble DiagnosisPowertrain ManagementOpen45.Fuel Delivery and Air Induction > Variable Induction System — Diagnostic Aids > How to Perform Electrical Incident Simulation TestsPowertrain ManagementOpen46.Fuel Delivery and Air Induction > Variable Induction System — Diagnostic Aids > Key to Symbols Signifying Measurements or ProceduresPowertrain ManagementOpen47.Fuel Delivery and Air Induction > Variable Induction System — Diagnostic Aids > Work FlowPowertrain ManagementOpen48.Fuel Delivery and Air Induction > Variable Induction System — Diagram Information and Instructions > Harness Connector DescriptionPowertrain ManagementOpen
Exact Vehicle Hub
Browse →Repairs That Intersect This Wiring
Browse →Likely Trouble Codes for This System
Browse →P0192: Fuel Rail Pressure Sensor Circuit LowCode
Fuel code commonly seen during fuel pump diagnosis.
P0230: Fuel Pump Primary CircuitCode
Fuel code commonly seen during fuel pump diagnosis.
P0231: Fuel Pump Secondary Circuit LowCode
Fuel code commonly seen during fuel pump diagnosis.
P2177: System Too Lean Off Idle (Bank 1)Code
Fuel code commonly seen during fuel pump diagnosis.
P0174: System Too Lean (Bank 2)Code
Fuel code commonly seen during fuel pump diagnosis.
P0191: Fuel Rail Pressure Sensor Circuit Range/PerformanceCode
Fuel code commonly seen during fuel pump diagnosis.
More Q45 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 DiagramEngine Management Wiring DiagramBody Electrical Wiring Diagram
Same System, Other Vehicles
2010 Toyota Prius Fuel Pump Wiring Diagram2012 Toyota Camry Fuel Pump Wiring Diagram2005 Honda Accord Fuel Pump Wiring Diagram2005 Honda Civic Fuel Pump Wiring Diagram2005 Honda Insight Fuel Pump Wiring Diagram2005 Honda S2000 Fuel Pump Wiring Diagram2011 Honda Fit Fuel Pump Wiring Diagram2005 Ford Crown Victoria Fuel Pump Wiring Diagram