Repair and Diagnosis

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• Quick Lookups
  • Common Specs & Procedures (Except Hybrid) (3.0L)
  • DTC Index (Except Hybrid)
  • Electrical Component Locations
    • OEM Component Harness Location Charts
    • Q50 - Component Locations (Except Hybrid)
  • Fluids
  • Technical Bulletins
    • Campaigns
    • Safety Recalls
    • Technical Service Bulletins
  • Tire Fitment
  • Wiring Diagrams
    • OEM Component Harness Location Charts
    • OEM Connector End Views (1 Of 2)
    • OEM Connector End Views (2 Of 2)
    • System Wiring Diagrams
    • Using lemon2025'S System Wiring Diagrams
• Accessories & Equipment
  • Anti-Theft Systems
    • Door & Lock (DTC/Circuit Diagnosis) (Except Hybrid)
    • Door & Lock (Except Hybrid)
    • Security Control System (DTC/Circuit Diagnosis) (Except Hybrid)
    • Security Control System (Except Hybrid)
  • Collision/Avoidance
    • Active Lane Control (Except Hybrid)
    • ADAS Control Unit (Except Hybrid)
    • Around View Monitor System (Except Hybrid)
    • Automatic Speed Control Device (Except Hybrid)
    • Chassis Control System (Except Hybrid)
    • Cruise Control System (DTC/Circuit Diagnosis) (Except Hybrid)
    • Cruise Control System (Except Hybrid)
    • Driver Assistance System (DTC/Circuit Diagnosis) (Except Hybrid)
    • Driver Assistance System (Except Hybrid)
    • Forward Emergency Braking (Except Hybrid)
    • Rear View Monitor System (Except Hybrid)
  • Communication Devices
    • Body Control System (DTC/Circuit Diagnosis) (Except Hybrid)
    • Body Control System (Except Hybrid)
    • Can Fundamental (Except Hybrid)
    • Can Gateway System (Except Hybrid)
    • Can System (1 Of 2) (Except Hybrid)
    • Can System (2 Of 2) (Except Hybrid)
    • Telematics System (Except Hybrid)
  • Cruise Control Systems
    • Automatic Speed Control Device (Except Hybrid)
    • Cruise Control System (DTC/Circuit Diagnosis) (Except Hybrid)
    • Cruise Control System (Except Hybrid)
  • Drivers Assistance Systems - ADAS
    • Active Lane Control (Except Hybrid)
    • ADAS Control Unit (Except Hybrid)
    • Around View Monitor System (Except Hybrid)
    • Automatic Speed Control Device (Except Hybrid)
    • Chassis Control System (Except Hybrid)
    • Cruise Control System (DTC/Circuit Diagnosis) (Except Hybrid)
    • Cruise Control System (Except Hybrid)
    • Driver Assistance System (DTC/Circuit Diagnosis) (Except Hybrid)
    • Driver Assistance System (Except Hybrid)
    • Forward Emergency Braking (Except Hybrid)
    • Rear View Monitor System (Except Hybrid)
  • Entertainment Systems
    • Audio, Visual Navigation System - INFINITI INTOUCH (DTC/Circuit Diagnosis) (Except Hybrid)
    • Audio, Visual Navigation System - INFINITI INTOUCH (Except Hybrid)
  • Exterior Lights
    • Exterior Lighting System (DTC/Circuit Diagnosis) (Except Hybrid)
    • Exterior Lighting System (Except Hybrid)
  • Gauges & Instrument Panels
    • Instrument Panel (Except Hybrid)
    • Meter, Warning Lamp Indicator (DTC/Circuit Diagnosis) (Except Hybrid)
    • Meter, Warning Lamp Indicator (Except Hybrid)
  • Heated Glass/Defoggers
    • Defogger (Circuit Diagnosis) (Except Hybrid)
    • Defogger (Except Hybrid)
  • Horns
    • Horn (Except Hybrid)
  • Infotainment
    • Audio, Visual Navigation System - INFINITI INTOUCH (DTC/Circuit Diagnosis) (Except Hybrid)
    • Audio, Visual Navigation System - INFINITI INTOUCH (Except Hybrid)
  • Interior/Exterior Trim
    • Exterior (Except Hybrid)
    • Interior Panels / Trim (Except Hybrid)
  • Interior/Illumination Lights
    • Interior Lighting System (Circuit Diagnosis) (Except Hybrid)
    • Interior Lighting System (Except Hybrid)
  • Mirrors
    • Mirrors (DTC/Circuit Diagnosis) (Except Hybrid)
    • Mirrors (Except Hybrid)
  • Seats
    • Automatic Drive Positioner (DTC/Circuit Diagnosis) (Except Hybrid)
    • Automatic Drive Positioner (Except Hybrid)
    • Seats (DTC/Circuit Diagnosis) (Except Hybrid)
    • Seats (Except Hybrid)
  • Warning Systems
    • Road Wheels, Tires And TPMS (Except Hybrid)
    • Tire Pressure Monitoring System (DTC/Circuit Diagnosis) (Except Hybrid)
    • Warning Chime System (Circuit Diagnosis) (Except Hybrid)
    • Warning Chime System (Except Hybrid)
  • Window Motors & Regulators
    • Glass & Window System (Service Information)
    • Power Window Control System (Circuit Diagnosis) (Except Hybrid)
    • Power Window Control System (Except Hybrid)
  • Wiper/Washer Systems
    • Wiper & Washer System (Circuit Diagnosis) (Except Hybrid)
    • Wiper & Washer System (Except Hybrid)
• Body & Frame
  • Door Locks
    • Door & Lock (DTC/Circuit Diagnosis) (Except Hybrid)
    • Door & Lock (Except Hybrid)
    • Security Control System (DTC/Circuit Diagnosis) (Except Hybrid)
    • Security Control System (Except Hybrid)
  • Exterior Body Panels
    • Door & Lock (Except Hybrid)
    • Exterior (Except Hybrid)
  • Exterior/Interior Trim
    • Exterior (Except Hybrid)
    • Interior Panels / Trim (Except Hybrid)
  • Mirrors
    • Mirrors (DTC/Circuit Diagnosis) (Except Hybrid)
    • Mirrors (Except Hybrid)
  • Seats
    • Automatic Drive Positioner (DTC/Circuit Diagnosis) (Except Hybrid)
    • Automatic Drive Positioner (Except Hybrid)
    • Seats (DTC/Circuit Diagnosis) (Except Hybrid)
    • Seats (Except Hybrid)
  • Sun Roof/T-Top/Convertible Top
    • Roof (Circuit Diagnosis) (Except Hybrid)
    • Roof (Except Hybrid)
  • Windows
    • Glass & Window System (Service Information)
    • Power Window Control System (Circuit Diagnosis) (Except Hybrid)
    • Power Window Control System (Except Hybrid)
• Brakes
  • Brakes Control Systems
    • Brake Control System (DTC/Circuit Diagnosis) (Except Hybrid)
    • Brake Control System (Except Hybrid)
  • Mechanical - Hydraulic
    • Brake System (Except Hybrid)
  • Parking Brake System (Except Hybrid)
• Drivelines & Axles
  • Axle Shafts
    • Front Axle (Except Hybrid)
    • Rear Axle (Except Hybrid)
  • Differentials & Drive Axles
    • Front Axle (Except Hybrid)
    • Front Final Drive (Except Hybrid)
    • Rear Axle (Except Hybrid)
    • Rear Final Drive (Except Hybrid)
  • Driveshaft & Universal Joints
    • Front Propeller Shaft (Except Hybrid)
    • Rear Propeller Shaft (Except Hybrid)
  • Wheel Hubs
    • Front Axle (Except Hybrid)
    • Rear Axle (Except Hybrid)
• Electrical
  • Body Electrical
    • OEM Component Harness Location Charts
    • OEM Connector End Views (1 Of 2)
    • OEM Connector End Views (2 Of 2)
    • Power Control System (DTC/Circuit Diagnosis) (Except Hybrid)
    • Power Control System (Except Hybrid)
    • Power Distribution System (Except Hybrid)
    • Power Outlet (Except Hybrid)
    • Power Supply, Ground Circuit (Except Hybrid)
  • Charging Systems
    • Charging System (Circuit Diagnosis) (Except Hybrid)
    • Charging System (Except Hybrid)
  • Component Locations
    • OEM Component Harness Location Charts
    • Q50 - Component Locations (Except Hybrid)
  • Fuses & Circuit Breakers
    • OEM Component Harness Location Charts
    • OEM Connector End Views (1 Of 2)
    • OEM Connector End Views (2 Of 2)
  • Gauges
    • Instrument Panel (Except Hybrid)
    • Meter, Warning Lamp Indicator (DTC/Circuit Diagnosis) (Except Hybrid)
    • Meter, Warning Lamp Indicator (Except Hybrid)
  • Horns
    • Horn (Except Hybrid)
  • Motors, Switches, Relays
    • OEM Component Harness Location Charts
    • OEM Connector End Views (1 Of 2)
    • OEM Connector End Views (2 Of 2)
    • Power Control System (DTC/Circuit Diagnosis) (Except Hybrid)
    • Power Control System (Except Hybrid)
    • Power Distribution System (Except Hybrid)
    • Power Outlet (Except Hybrid)
    • Power Supply, Ground Circuit (Except Hybrid)
  • Starter
    • Starting System (3.0L) (Except Hybrid)
    • Starting System (Circuit Diagnosis) (3.0L) (Except Hybrid)
  • Wiring Diagrams
    • OEM Component Harness Location Charts
    • OEM Connector End Views (1 Of 2)
    • OEM Connector End Views (2 Of 2)
    • System Wiring Diagrams
    • Using lemon2025'S System Wiring Diagrams
• Engine Mechanical
  • Cooling System (Mechanical)
    • Engine Cooling System (3.0L) (Except Hybrid)
  • Exhaust System (3.0L) (Except Hybrid)
  • Fuel System (3.0L) (Except Hybrid)
  • Engine Lubrication System (3.0L) (Except Hybrid)
  • Engine Mechanical (3.0L) (Except Hybrid)
  • Starter
    • Starting System (3.0L) (Except Hybrid)
    • Starting System (Circuit Diagnosis) (3.0L) (Except Hybrid)
• Engine Performance
  • Emissions
    • Emission Applications
    • Emission Control Abbreviations
    • State Emission Standards - Diesel
    • State Emission Standards - Gas
  • Engine Control Systems
    • Accelerator Control System (Except Hybrid)
    • Drive Mode System (Circuit Diagnosis) (Except Hybrid)
    • Drive Mode System (Except Hybrid)
  • Fuel Delivery
    • Fuel System (3.0L) (Except Hybrid)
  • Mode 6 - INFINITI
  • Specifications
    • Firing Order & Cylinder Identification
  • System
    • Engine Control System (Basic Inspection) (3.0L) (Except Hybrid)
    • Engine Control System (DTC/Circuit Diagnosis) (3.0L) (1 Of 5) (Except Hybrid)
    • Engine Control System (DTC/Circuit Diagnosis) (3.0L) (2 Of 5) (Except Hybrid)
    • Engine Control System (DTC/Circuit Diagnosis) (3.0L) (3 Of 5) (Except Hybrid)
    • Engine Control System (DTC/Circuit Diagnosis) (3.0L) (4 Of 5) (Except Hybrid)
    • Engine Control System (DTC/Circuit Diagnosis) (3.0L) (5 Of 5) (Except Hybrid)
    • Engine Control System (Introduction) (3.0L) (Except Hybrid)
    • Engine Control System (Symptom Diagnosis & Removal And Installation) (3.0L) (Except Hybrid)
  • Testing & Diagnosis
    • Engine Control System (Basic Inspection) (3.0L) (Except Hybrid)
    • Engine Control System (DTC/Circuit Diagnosis) (3.0L) (1 Of 5) (Except Hybrid)
    • Engine Control System (DTC/Circuit Diagnosis) (3.0L) (2 Of 5) (Except Hybrid)
    • Engine Control System (DTC/Circuit Diagnosis) (3.0L) (3 Of 5) (Except Hybrid)
    • Engine Control System (DTC/Circuit Diagnosis) (3.0L) (4 Of 5) (Except Hybrid)
    • Engine Control System (DTC/Circuit Diagnosis) (3.0L) (5 Of 5) (Except Hybrid)
    • Engine Control System (Introduction) (3.0L) (Except Hybrid)
    • Engine Control System (Symptom Diagnosis & Removal And Installation) (3.0L) (Except Hybrid)
• General Information
  • Abbreviations
    • Commonly Used Abbreviations - General Information
    • Emission Control Abbreviations
  • Basic Trouble Shooting
    • Basic Trouble Shooting - General Information
    • Commonly Used Abbreviations - General Information
    • Emission Control Abbreviations
    • Engine Performance - Trouble Shooting - General Information
  • Brakes
    • Anti-Lock Brake Safety Precautions - General Information
    • Map - Brake Systems
    • Map - Routine Inspection Reference Guide
  • Check Lists
    • Symptom Check List Worksheet - General Information
  • Driveline/Axles
    • Drive Axle Noise Diagnosis - General Information
    • Gear Tooth Contact Patterns - General Information
    • Map - Drive Train & Transmission
    • Trouble Shooting - Clutches - General Information
  • DTC Index (Except Hybrid)
  • Electrical
    • Map - Electrical Systems
    • Using lemon2025'S System Wiring Diagrams
  • Engine
    • Engine Overhaul Procedures - General Information
    • General Cooling System Service - General Information
  • Engine Performance
    • Electrostatic Discharge Warning - General Information
    • Engine Performance Diagnostic Routine Outline - General Information
    • Engine Performance Safety Precautions
    • Map - Engine Performance & Maintenance
    • Parasitic Load Explanation & Test Procedures - General Information
    • State Emission Standards - Diesel
    • State Emission Standards - Gas
    • Waveforms - Injector Pattern Tutorial - General Information
  • Map - Exhaust Systems
  • Heating, Ventilation & A/C (HVAC)
    • Map - Heating, Ventilation, & Air Conditioning
  • Identification
    • CANADIAN Model Cross-Reference
  • Metric Conversions
    • Engine Displacement Conversion Table - ECAT
    • Metric Conversions
  • OEM General Information
    • Automatic Stop/Start Disable
    • General Information (Except Hybrid)
  • Reset Procedures
    • Maintenance Reminder Light (Reset Procedures)
    • Tire Pressure Monitor Systems
  • Specifications Index
    • Common Specs & Procedures (Except Hybrid) (3.0L)
  • Steering
    • Map - Steering, Suspension, Wheel Alignment, Wheels & Tires
    • Wheel Alignment Theory & Operation - General Information
  • Traction Control Disable Procedures
  • Trouble Shooting - Manual Transmission - General Information
• Heating, Ventilation & A/C (HVAC)
  • HVAC Control Systems
    • Heater Air Conditioning Control System (DTC/Circuit Diagnosis) (Except Hybrid)
    • Heater Air Conditioning Control System (Except Hybrid)
    • Heater Air Conditioning System (Except Hybrid)
    • Ventilation System (Except Hybrid)
• Maintenance
  • Procedures
    • Maintenance (Except Hybrid)
    • Maintenance Reminder Light (Reset Procedures)
• Restraints
  • Air Bag, SRS
    • SRS Airbag (Except Hybrid)
  • Passive Restraints
    • Seat Belts (Except Hybrid)
  • Restraints Control Systems
    • Seat Belt Control System (DTC/Circuit Diagnosis) (Except Hybrid)
    • Seat Belt Control System (Except Hybrid)
    • SRS Airbag Control System (DTC/Circuit Diagnosis) (Except Hybrid)
    • SRS Airbag Control System (Except Hybrid)
  • Seat Belts
    • Seat Belt Control System (DTC/Circuit Diagnosis) (Except Hybrid)
    • Seat Belt Control System (Except Hybrid)
    • SRS Airbag Control System (DTC/Circuit Diagnosis) (Except Hybrid)
    • SRS Airbag Control System (Except Hybrid)
• Steering
  • Manual Steering
    • Steering System (Circuit Diagnosis) (Except Hybrid)
    • Steering System (Except Hybrid)
  • Power Steering
    • Steering System (Circuit Diagnosis) (Except Hybrid)
    • Steering System (Except Hybrid)
  • Steering Control Systems
    • Steering Control System - Direct Adaptive Steering (Basic Inspection) (Except Hybrid)
    • Steering Control System - Direct Adaptive Steering (DTC/Circuit Diagnosis, Symptom Diagnosis & Removal And Installation) (Except Hybrid)
    • Steering Control System - Electric Power Steering (DTC/Circuit Diagnosis) (Except Hybrid)
    • Steering Control System - Hydraulic Pump Electric Power Steering (Except Hybrid)
• Suspension
  • Front Suspension (Except Hybrid)
  • Rear Suspension (Except Hybrid)
  • Suspension Control Systems
    • Suspension Control System (Except Hybrid)
  • Wheel Alignment
    • Front Suspension (Except Hybrid)
    • INFINITI Wheel Alignment Specifications - Q50
    • Rear Suspension (Except Hybrid)
  • Wheels & Tire System
    • Road Wheels, Tires And TPMS (Except Hybrid)
    • Tire Pressure Monitoring System (DTC/Circuit Diagnosis) (Except Hybrid)
• Transmission
  • Automatic Trans
    • Automatic Transmission (DTC/Circuit Diagnosis) (Except Hybrid)
    • Automatic Transmission (Introduction, Wiring Diagrams And Basic Inspection) (Except Hybrid)
    • Automatic Transmission (Symptom Diagnosis & Removal And Installation) (Except Hybrid)
  • Transfer Case
    • Transfer Case (DTC/Circuit Diagnosis) (Except Hybrid)
    • Transfer Case (Except Hybrid)
  • Transmission Control Systems
    • Drive Mode System (Circuit Diagnosis) (Except Hybrid)
    • Drive Mode System (Except Hybrid)
• External Pages