Repair and Diagnosis

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• Quick Lookups
  • Common Specs & Procedures
  • DTC Index
  • Electrical Component Locations
    • OEM Component Harness Location Charts
    • Q50 - Component Locations
  • Fluids
  • Technical Bulletins
    • Campaigns
    • Safety Recalls
    • Technical Service Bulletins
  • Tire Fitment
  • Wiring Diagrams
    • OEM Component Harness Location Charts
    • OEM Connector End Views
    • System Wiring Diagrams
    • Using lemon2025'S System Wiring Diagrams
• Accessories & Equipment
  • Anti-Theft Systems
    • Door & Lock (Diagnostics)
    • Door & Lock (Service Information)
    • Door & Lock System (DTCS)
    • Security Control System (Diagnostics)
    • Security Control System (DTCS)
    • Security Control System (Service Information)
  • Collision/Avoidance
    • Audio System & Navigation System (DTCS) (1 Of 2)
    • Audio System & Navigation System (DTCS) (2 Of 2)
    • Audio, Visual & Navigation System (Diagnostics) (1 Of 2)
    • Audio, Visual & Navigation System (Diagnostics) (2 Of 2)
    • Audio, Visual & Navigation System (Service Information)
    • Cruise Control System (Diagnostics)
    • Cruise Control System (DTCS)
    • Cruise Control System (Service Information)
    • Driver Assistance System (Diagnostics) (1 Of 2)
    • Driver Assistance System (Diagnostics) (2 Of 2)
    • Driver Assistance System (DTCS) (1 Of 2)
    • Driver Assistance System (DTCS) (2 Of 2)
    • Driver Assistance System (Service Information)
    • Sonar System (Diagnostics)
    • Sonar System (DTCS)
    • Sonar System (Service Information)
  • Communication Devices
    • Can (Controller Area Network) (Diagnostics)
    • Can Fundamental (Diagnostics)
    • Can Gateway (Diagnostics)
    • Can Gateway (DTCS)
    • LAN System (Service Information)
  • Cruise Control Systems
    • Cruise Control System (Diagnostics)
    • Cruise Control System (DTCS)
    • Cruise Control System (Service Information)
  • Drivers Assistance Systems - ADAS
    • Audio System & Navigation System (DTCS) (1 Of 2)
    • Audio System & Navigation System (DTCS) (2 Of 2)
    • Audio, Visual & Navigation System (Diagnostics) (1 Of 2)
    • Audio, Visual & Navigation System (Diagnostics) (2 Of 2)
    • Audio, Visual & Navigation System (Service Information)
    • Cruise Control System (Diagnostics)
    • Cruise Control System (DTCS)
    • Cruise Control System (Service Information)
    • Driver Assistance System (Diagnostics) (1 Of 2)
    • Driver Assistance System (Diagnostics) (2 Of 2)
    • Driver Assistance System (DTCS) (1 Of 2)
    • Driver Assistance System (DTCS) (2 Of 2)
    • Driver Assistance System (Service Information)
    • Sonar System (Diagnostics)
    • Sonar System (DTCS)
    • Sonar System (Service Information)
  • Entertainment Systems
    • Audio System & Navigation System (DTCS) (1 Of 2)
    • Audio System & Navigation System (DTCS) (2 Of 2)
    • Audio, Visual & Navigation System (Diagnostics) (1 Of 2)
    • Audio, Visual & Navigation System (Diagnostics) (2 Of 2)
    • Audio, Visual & Navigation System (Service Information)
  • Exterior Lights
    • Exterior Lighting System (Diagnostics)
    • Exterior Lighting System (DTCS)
    • Exterior Lighting System (Service Information)
  • Gauges & Instrument Panels
    • Instrument Panel (Diagnostics)
    • Instrument Panel (Service Information)
    • Meter, Warning Lamp & Indicator (Diagnostics)
    • Meter, Warning Lamp & Indicator (DTCS)
    • Meter, Warning Lamp & Indicator (Service Information)
  • Headlights
    • Exterior Lighting System (Diagnostics)
    • Exterior Lighting System (DTCS)
    • Exterior Lighting System (Service Information)
  • Heated Glass/Defoggers
    • Defogger (Diagnostics)
    • Defogger (Service Information)
  • Horns
    • Horn (Diagnostics)
    • Horn (Service Information)
  • Infotainment
    • Audio System & Navigation System (DTCS) (1 Of 2)
    • Audio System & Navigation System (DTCS) (2 Of 2)
    • Audio, Visual & Navigation System (Diagnostics) (1 Of 2)
    • Audio, Visual & Navigation System (Diagnostics) (2 Of 2)
    • Audio, Visual & Navigation System (Service Information)
  • Interior/Exterior Trim
    • Exterior (Diagnostics)
    • Exterior (Service Information)
    • Interior (Diagnostics)
    • Interior (Service Information)
  • Interior/Illumination Lights
    • Interior Lighting System (Diagnostics)
    • Interior Lighting System (Service Information)
  • Mirrors
    • Mirrors (Diagnostics)
    • Mirrors (Service Information)
  • Seats
    • Automatic Drive Positioner (Diagnostics)
    • Automatic Drive Positioner (DTCS)
    • Automatic Drive Positioner (Service Information)
    • Heated Seats (DTCS)
    • Seats (Diagnostics)
    • Seats (Service Information)
  • Warning Systems
    • Meter, Warning Lamp & Indicator (Diagnostics)
    • Meter, Warning Lamp & Indicator (DTCS)
    • Meter, Warning Lamp & Indicator (Service Information)
    • Warning Chime System (Diagnostics)
    • Warning Chime System (Service Information)
    • Wheel & Tire System (Diagnostics)
    • Wheel & Tire System (DTCS)
    • Wheel & Tire System (Service Information)
  • Window Motors & Regulators
    • Glass & Window System (Diagnostics)
    • Glass & Window System (Service Information)
    • Power Window Control System (Diagnostics)
    • Power Window Control System (Service Information)
  • Wiper/Washer Systems
    • Wiper & Washer System (Diagnostics)
    • Wiper & Washer System (Service Information)
• Body & Frame
  • Door Locks
    • Door & Lock (Diagnostics)
    • Door & Lock (Service Information)
    • Door & Lock System (DTCS)
    • Security Control System (Diagnostics)
    • Security Control System (DTCS)
    • Security Control System (Service Information)
  • Exterior Body Panels
    • Door & Lock (Diagnostics)
    • Door & Lock (Service Information)
    • Door & Lock System (DTCS)
    • Exterior (Diagnostics)
    • Exterior (Service Information)
  • Exterior/Interior Trim
    • Exterior (Diagnostics)
    • Exterior (Service Information)
    • Interior (Diagnostics)
    • Interior (Service Information)
  • Mirrors
    • Mirrors (Diagnostics)
    • Mirrors (Service Information)
  • Seats
    • Automatic Drive Positioner (Diagnostics)
    • Automatic Drive Positioner (DTCS)
    • Automatic Drive Positioner (Service Information)
    • Heated Seats (DTCS)
    • Seats (Diagnostics)
    • Seats (Service Information)
  • Sun Roof/T-Top/Convertible Top
    • Roof (Diagnostics)
    • Roof (Service Information)
  • Windows
    • Glass & Window System (Diagnostics)
    • Glass & Window System (Service Information)
    • Power Window Control System (Diagnostics)
    • Power Window Control System (Service Information)
• Brakes
  • Anti-Lock Brakes
    • Brake Control System (Diagnostics)
    • Brake Control System (DTCS)
    • Brake Control System (Service Information)
  • Brakes Control Systems
    • Brake Control System (Diagnostics)
    • Brake Control System (DTCS)
    • Brake Control System (Service Information)
  • Mechanical - Hydraulic
    • Brake System (Diagnostics)
    • Brake System (Service Information)
  • Parking Brake System
    • Parking Brake System (Diagnostics)
    • Parking Brake System (Service Information)
  • Traction Control
    • Brake Control System (Diagnostics)
    • Brake Control System (DTCS)
    • Brake Control System (Service Information)
• Drivelines & Axles
  • Axle Shafts
    • Front Axle (Diagnostics)
    • Front Axle (Service Information)
    • Rear Axle (Diagnostics)
    • Rear Axle (Service Information)
  • Differentials & Drive Axles
    • Front Axle (Diagnostics)
    • Front Axle (Service Information)
    • Rear Axle (Diagnostics)
    • Rear Axle (Service Information)
  • Wheel Hubs
    • Front Axle (Diagnostics)
    • Front Axle (Service Information)
    • Rear Axle (Diagnostics)
    • Rear Axle (Service Information)
• Electrical
  • Body Electrical
    • Body Control System (Diagnostics)
    • Body Control System (DTCS)
    • Body Control System (Service Information)
    • OEM Component Harness Location Charts
    • OEM Connector End Views
    • Power Control System (Diagnostics)
    • Power Control System (DTCS)
    • Power Control System (Service Information)
    • Power Outlet (Diagnostics)
    • Power Outlet (Service Information)
    • Power Supply, Ground & Circuit Elements (Diagnostics)
    • Power Supply, Ground & Circuit Elements (Service Information)
  • Charging Systems
    • Charging System (Diagnostics)
    • Charging System (Service Information)
  • Component Locations
    • OEM Component Harness Location Charts
    • Q50 - Component Locations
  • Fuses & Circuit Breakers
    • OEM Component Harness Location Charts
    • OEM Connector End Views
  • Gauges
    • Instrument Panel (Diagnostics)
    • Instrument Panel (Service Information)
    • Meter, Warning Lamp & Indicator (Diagnostics)
    • Meter, Warning Lamp & Indicator (DTCS)
    • Meter, Warning Lamp & Indicator (Service Information)
  • Horns
    • Horn (Diagnostics)
    • Horn (Service Information)
  • Motors, Switches, Relays
    • Body Control System (Diagnostics)
    • Body Control System (DTCS)
    • Body Control System (Service Information)
    • OEM Component Harness Location Charts
    • OEM Connector End Views
    • Power Control System (Diagnostics)
    • Power Control System (DTCS)
    • Power Control System (Service Information)
    • Power Outlet (Diagnostics)
    • Power Outlet (Service Information)
    • Power Supply, Ground & Circuit Elements (Diagnostics)
    • Power Supply, Ground & Circuit Elements (Service Information)
  • Starter
    • Starting System (Diagnostics)
    • Starting System (Service Information)
  • Wiring Diagrams
    • OEM Component Harness Location Charts
    • OEM Connector End Views
    • System Wiring Diagrams
    • Using lemon2025'S System Wiring Diagrams
• Engine Mechanical
  • Cooling System (Mechanical)
    • Engine Cooling System (Diagnostics)
    • Engine Cooling System (Service Information)
  • Exhaust System (Service Information)
  • Fuel System
    • Fuel System (Diagnostics)
    • Fuel System (Service Information)
  • Lubrication System
    • Engine Lubrication (Service Information)
    • Engine Lubrication System (Diagnostics)
  • Mechanical
    • Engine Mechanical (Diagnostics)
    • Engine Mechanical (Service Information)
  • Starter
    • Starting System (Diagnostics)
    • Starting System (Service Information)
• Engine Performance
  • Emissions
    • Emission Applications
    • Emission Control Abbreviations
    • State Emission Standards - Diesel
    • State Emission Standards - Gas
  • Engine Control Systems
    • Accelerator Control System (Service Information)
    • Drive Mode System (Diagnostics)
    • Drive Mode System (Service Information)
    • Engine Control System (Service Information) (1 Of 2)
    • Engine Control System (Service Information) (2 Of 2)
  • Fuel Delivery
    • Fuel System (Diagnostics)
    • Fuel System (Service Information)
  • Specifications
    • Firing Order & Cylinder Identification
  • System
    • Engine Control System (Diagnostics) (1 Of 4)
    • Engine Control System (Diagnostics) (2 Of 4)
    • Engine Control System (Diagnostics) (3 Of 4)
    • Engine Control System (Diagnostics) (4 Of 4)
    • Engine Control System (DTCS) (1 Of 6)
    • Engine Control System (DTCS) (2 Of 6)
    • Engine Control System (DTCS) (3 Of 6)
    • Engine Control System (DTCS) (4 Of 6)
    • Engine Control System (DTCS) (5 Of 6)
    • Engine Control System (DTCS) (6 Of 6)
  • Testing & Diagnosis
    • Engine Control System (Diagnostics) (1 Of 4)
    • Engine Control System (Diagnostics) (2 Of 4)
    • Engine Control System (Diagnostics) (3 Of 4)
    • Engine Control System (Diagnostics) (4 Of 4)
    • Engine Control System (DTCS) (1 Of 6)
    • Engine Control System (DTCS) (2 Of 6)
    • Engine Control System (DTCS) (3 Of 6)
    • Engine Control System (DTCS) (4 Of 6)
    • Engine Control System (DTCS) (5 Of 6)
    • Engine Control System (DTCS) (6 Of 6)
• 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
  • 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
  • Maintenance Reminder Light (Reset Procedures)
  • Specifications Index
    • Common Specs & Procedures
  • 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 (Diagnostics)
    • Heater & Air Conditioning Control System (DTCS)
    • Heater & Air Conditioning Control System (Service Information)
    • Heater & Air Conditioning System (Diagnostics)
    • Heater & Air Conditioning System (Service Information)
    • Ventilation System (Diagnostics)
    • Ventilation System (Service Information)
• Maintenance
  • Procedures
    • Maintenance
    • Maintenance Reminder Light (Reset Procedures)
• Restraints
  • Air Bag, SRS
    • Airbag Control System (Diagnostics)
    • Airbag Control System (DTCS) (1 Of 2)
    • Airbag Control System (DTCS) (2 Of 2)
    • Airbag Control System (Service Information)
    • Airbag System (Diagnostics)
    • Airbag System (Service Information)
  • Passive Restraints
    • Seat Belt Control System (Diagnostics)
    • Seat Belt Control System (DTCS)
    • Seat Belt Control System (Service Information)
    • Seat Belts (Diagnostics)
    • Seat Belts (Service Information)
  • Restraints Control Systems
    • Airbag Control System (Diagnostics)
    • Airbag Control System (DTCS) (1 Of 2)
    • Airbag Control System (DTCS) (2 Of 2)
    • Airbag Control System (Service Information)
    • Seat Belt Control System (Diagnostics)
    • Seat Belt Control System (DTCS)
    • Seat Belt Control System (Service Information)
  • Seat Belts
    • Airbag Control System (Diagnostics)
    • Airbag Control System (DTCS) (1 Of 2)
    • Airbag Control System (DTCS) (2 Of 2)
    • Airbag Control System (Service Information)
    • Seat Belt Control System (Diagnostics)
    • Seat Belt Control System (DTCS)
    • Seat Belt Control System (Service Information)
• Steering
  • Electronic Steering
    • Steering Control System (Diagnostics)
    • Steering Control System (DTCS) (1 Of 2)
    • Steering Control System (DTCS) (2 Of 2)
    • Steering Control System (Service Information)
  • Manual Steering
    • Steering System (Diagnostics)
    • Steering System (Service Information)
  • Power Steering
    • Steering System (Diagnostics)
    • Steering System (Service Information)
  • Steering Column
    • Steering System (Diagnostics)
    • Steering System (Service Information)
  • Steering Control Systems
    • Steering Control System (Diagnostics)
    • Steering Control System (DTCS) (1 Of 2)
    • Steering Control System (DTCS) (2 Of 2)
    • Steering Control System (Service Information)
  • Steering Gear
    • Steering System (Diagnostics)
    • Steering System (Service Information)
  • Steering Linkage
    • Steering System (Diagnostics)
    • Steering System (Service Information)
• Suspension
  • Electronic Suspension
    • Suspension Control System (Diagnostics)
    • Suspension Control System (Service Information)
  • Front Suspension
    • Front Suspension (Diagnostics)
    • Front Suspension (Service Information)
  • Rear Suspension
    • Rear Suspension (Diagnostics)
    • Rear Suspension (Service Information)
  • Suspension Control Systems
    • Suspension Control System (Diagnostics)
    • Suspension Control System (Service Information)
  • INFINITI Wheel Alignment Specifications - Q50
  • Wheels & Tire System
    • Wheel & Tire System (Diagnostics)
    • Wheel & Tire System (DTCS)
    • Wheel & Tire System (Service Information)
• Transmission
  • Automatic Trans
    • Automatic Transmission (Diagnostics) (1 Of 2)
    • Automatic Transmission (Diagnostics) (2 Of 2)
    • Automatic Transmission (DTCS)
    • Automatic Transmission (Service Information) (1 Of 2)
    • Automatic Transmission (Service Information) (2 Of 2)
  • Transfer Case
    • Transfer Case (Diagnostics)
    • Transfer Case (DTCS)
    • Transfer Case (Service Information)
  • Transmission Control Systems
    • Drive Mode System (Diagnostics)
    • Drive Mode System (Service Information)
• External Pages