Repair and Diagnosis

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• Quick Lookups
  • Common Specs & Procedures
    • Common Specifications & Procedures
  • DTC Index - Engine Code(S): CTWA & CTWB
  • Electrical Component Locations
    • Electrical Component Locator
    • Electrical Components Locations & Connector End Views -- Q7
    • Q7 - Component Locations
  • Fluids
  • Technical Bulletins
    • Safety Recalls
    • Tech Tips
    • Technical Service Bulletins
  • Tire Fitment
  • Wiring Diagrams
    • Electrical Components Locations & Connector End Views -- Q7
    • OEM Connector End Views
    • System Wiring Diagrams
    • Using lemon2025'S System Wiring Diagrams
• Accessories & Equipment
  • Anti-Theft Systems
    • Front Doors & Central Locking System
    • Immobilizer And Trailer Hitch
    • Interior Lights & Switches
  • Auxiliary Power Unit
    • Electrical Equipment - Instruments
  • Communication Devices
  • Entertainment Systems
    • Interior Lights & Switches
    • Seat Frames
  • Exterior Lights
    • Exterior Lights & Switches
    • Hid Headlamp Usage And Safety Precautions
  • Gauges & Instrument Panels
    • Electrical Equipment - Instruments
  • Horns
    • Electrical Equipment - Instruments
  • Infotainment
    • Communication
    • Interior Lights & Switches
    • Seat Frames
  • Interior/Exterior Trim
    • Body Exterior - Exterior Equipment
    • Body Exterior - General & Technical Data
    • Body Interior - Camper Cabinets, Shelves & Water Tank
    • Body Interior - Interior Equipment
    • Camper Cabinets, Shelves, Water Tank
    • Interior Lights & Switches
    • Interior Trim
  • Interior/Illumination Lights
    • Interior Lights & Switches
  • Mirrors
    • Body Exterior - Exterior Equipment
    • Body Interior - Interior Equipment
  • Seats
    • Seat Frames
    • Seat Upholstery & Covers
  • Steering Column Switches
    • Interior Lights & Switches
  • Window Motors & Regulators
    • Front Doors & Central Locking System
    • Glass & Window Regulators
    • Rear Door & Door Components
  • Wiper/Washer Systems
    • Washer Fluid Hoses
    • Wiper/Washer Systems
  • Wiring System (Data Link Connectors, Pwr Dist., Grnd Dist.)
    • Wires - General Information
    • Wiring
• Body & Frame
  • Door Locks
    • Front Doors & Central Locking System
    • Immobilizer And Trailer Hitch
    • Interior Lights & Switches
  • Exterior Body Panels
    • Body Exterior - Body Front
    • Body Exterior - Bumpers
    • Body Exterior - Exterior Equipment
    • Body Exterior - General & Technical Data
    • Exterior Body Panels (Hood, Lids)
    • Front Doors & Central Locking System
    • Rear Door & Door Components
  • Exterior/Interior Trim
    • Body Exterior - Exterior Equipment
    • Body Exterior - General & Technical Data
    • Body Interior - Camper Cabinets, Shelves & Water Tank
    • Body Interior - Interior Equipment
    • Camper Cabinets, Shelves, Water Tank
    • Interior Lights & Switches
    • Interior Trim
  • Frames, Subframes & Crossmembers
    • Body Exterior - Exterior Equipment
  • Mirrors
    • Body Exterior - Exterior Equipment
    • Body Interior - Interior Equipment
  • Seats
    • Seat Frames
    • Seat Upholstery & Covers
  • Sun Roof/T-Top/Convertible Top
    • Sunroof & Water Drain Hoses
  • Towing Systems
    • Immobilizer And Trailer Hitch
    • Interior Lights & Switches
  • Windows
    • Front Doors & Central Locking System
    • Glass & Window Regulators
    • Rear Door & Door Components
• Brakes
  • Anti-Lock Brakes
    • Anti-Lock Brake System
    • Brake System - General & Technical Data
  • Brakes Control Systems
    • Brake System - General & Technical Data
    • Brake System - Hydraulic Components
  • Mechanical - Hydraulic
    • Brake System - General & Technical Data
    • Brake System - Hydraulic Components
    • Brake System - Mechanical Components
    • Hydraulic Components - Brake System
  • Parking Brake System
    • Brake System - General & Technical Data
    • Brake System - Hydraulic Components
    • Brake System - Mechanical Components
  • Traction Control
    • Anti-Lock Brake System
    • Brake System - General & Technical Data
• Drivelines & Axles
  • Axle Shafts
    • Front Suspension
    • Rear Suspension
  • Differentials & Drive Axles
    • Final Drive & Differential - Transfer Case 0BU, Front Final Drive 0BM, 0C1, 0BN & Rear Final Drive 0BP
    • Final Drive & Differential Systems (Rear Final Drive, Transfer Case - 0AQ, Transmission - 0ATA,08DA,09DA,0BQA)
  • Driveshaft & Universal Joints
    • Final Drive & Differential - Transfer Case 0BU, Front Final Drive 0BM, 0C1, 0BN & Rear Final Drive 0BP
    • Final Drive & Differential Systems (Rear Final Drive, Transfer Case - 0AQ, Transmission - 0ATA,08DA,09DA,0BQA)
  • Wheel Hubs
    • Front Suspension
    • Rear Suspension
• Electrical
  • Body Electrical
    • Immobilizer And Trailer Hitch
    • OEM Connector End Views
    • Wires - General Information
    • Wiring
  • Charging Systems
    • Battery & Generator - General Information
    • Electrical System - (Battery, Starter & Generator)
  • Component Locations
    • Electrical Component Locator
    • Electrical Components Locations & Connector End Views -- Q7
    • Q7 - Component Locations
  • Fuses & Circuit Breakers
    • Fuse And Relay Diagrams -- Q7
    • Fuses & Circuit Breakers
    • Wires - General Information
    • Wiring
  • Gauges
    • Electrical Equipment - Instruments
  • Horns
    • Electrical Equipment - Instruments
  • Motors, Switches, Relays
    • Immobilizer And Trailer Hitch
    • OEM Connector End Views
    • Wires - General Information
    • Wiring
  • Electrical System - (Battery, Starter & Generator)
  • Wiring Diagrams
    • Electrical Components Locations & Connector End Views -- Q7
    • OEM Connector End Views
    • System Wiring Diagrams
    • Using lemon2025'S System Wiring Diagrams
• Engine Mechanical
  • Auxiliary Emission Control Systems
    • 3.0L - Generic Scan Tool - Engine Code: CATA
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB - Engine DTC Tables (Engine Control Module (2013-2014 My))
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB - Engine DTC Tables (Engine Control Module (2015 My))
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB - Transmission DTC Tables & Diagnostic Procedures
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB (2 Of 2)
    • 3.0L - MULTIPORT Fuel Injection - Engine Code(S): CJTB, CJTC, CNAA, CJWB, CJWC, CJWE, CTWA, CTWB
  • Blowers, Superchargers & Turbochargers
    • 3.0L - Generic Scan Tool - Engine Code: CATA
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB - Engine DTC Tables (Engine Control Module (2013-2014 My))
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB - Engine DTC Tables (Engine Control Module (2015 My))
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB - Transmission DTC Tables & Diagnostic Procedures
    • 3.0L - Turbocharger & Supercharger - Engine Code(S): CJTB, CJTC, CNAA, CJWB, CJWC, CJWE, CTWA, CTWB
  • Cooling Fan
    • 3.0L - Cooling System - Engine Code(S): CJTB, CJTC, CNAA, CJWB, CJWC, CJWE, CTWA, CTWB
  • Cooling System (Mechanical)
    • 3.0L - Cooling System - Engine Code(S): CJTB, CJTC, CNAA, CJWB, CJWC, CJWE, CTWA, CTWB
  • Exhaust
    • 3.0L - Engine Mechanical - General & Technical Data - Engine Code(S): CJTB, CJTC, CNAA, CJWB, CJWC, CJWE, CTWA, CTWB
    • 3.0L - Exhaust System & Emission Controls - Engine Code(S): CJTB, CJTC, CNAA, CJWB, CJWC, CJWE, CTWA, CTWB
    • 3.0L - Generic Scan Tool - Engine Code: CATA
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB - Engine DTC Tables (Engine Control Module (2013-2014 My))
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB - Engine DTC Tables (Engine Control Module (2015 My))
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB - Transmission DTC Tables & Diagnostic Procedures
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB (2 Of 2)
  • Fuel System
    • 3.0L - Engine Mechanical - General & Technical Data - Engine Code(S): CJTB, CJTC, CNAA, CJWB, CJWC, CJWE, CTWA, CTWB
    • 3.0L - Generic Scan Tool - Engine Code: CATA
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB - Engine DTC Tables (Engine Control Module (2013-2014 My))
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB - Engine DTC Tables (Engine Control Module (2015 My))
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB - Transmission DTC Tables & Diagnostic Procedures
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB (2 Of 2)
    • 3.0L - MULTIPORT Fuel Injection - Engine Code(S): CJTB, CJTC, CNAA, CJWB, CJWC, CJWE, CTWA, CTWB
    • Fuel Supply System - Engine Code(S): Bar, BHK, BHL, CJWB, CJWC, CJWE, CTWA, CTWB
  • Lubrication System
    • 3.0L - Engine Mechanical - General & Technical Data - Engine Code(S): CJTB, CJTC, CNAA, CJWB, CJWC, CJWE, CTWA, CTWB
    • 3.0L - Lubrication - Engine Code(S): CJTB, CJTC, CNAA, CJWB, CJWC, CJWE, CTWA, CTWB
  • Mechanical
    • 3.0L - Crankshaft & Cylinder Block - Engine Code(S): CJTB, CJTC, CNAA, CJWB, CJWC, CJWE, CTWA, CTWB
    • 3.0L - Cylinder Head & VALVETRAIN - Engine Code(S): CJTB, CJTC, CNAA, CJWB, CJWC, CJWE, CTWA, CTWB
    • 3.0L - Engine Assembly - Engine Code(S): CJTB, CJTC, CNAA, CJWB, CJWC, CJWE, CTWA, CTWB
    • 3.0L - Engine Mechanical - General & Technical Data - Engine Code(S): CJTB, CJTC, CNAA, CJWB, CJWC, CJWE, CTWA, CTWB
    • Engine Overview With Adjustment Values & Gauge - Oil Gauge Tester (T40178)
  • Electrical System - (Battery, Starter & Generator)
• Engine Performance
  • Emissions
    • Emission Applications
    • Emission Applications - Diesel
    • Emission Control Abbreviations
    • State Emission Standards - Diesel
    • State Emission Standards - Gas
  • Engine Control Systems
    • 3.0L - Generic Scan Tool - Engine Code: CATA
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB - Engine DTC Tables (Engine Control Module (2013-2014 My))
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB - Engine DTC Tables (Engine Control Module (2015 My))
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB - Transmission DTC Tables & Diagnostic Procedures
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB (2 Of 2)
  • Fuel Delivery
    • 3.0L - Engine Mechanical - General & Technical Data - Engine Code(S): CJTB, CJTC, CNAA, CJWB, CJWC, CJWE, CTWA, CTWB
    • 3.0L - Generic Scan Tool - Engine Code: CATA
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB - Engine DTC Tables (Engine Control Module (2013-2014 My))
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB - Engine DTC Tables (Engine Control Module (2015 My))
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB - Transmission DTC Tables & Diagnostic Procedures
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB (2 Of 2)
    • 3.0L - MULTIPORT Fuel Injection - Engine Code(S): CJTB, CJTC, CNAA, CJWB, CJWC, CJWE, CTWA, CTWB
    • Fuel Supply System - Engine Code(S): Bar, BHK, BHL, CJWB, CJWC, CJWE, CTWA, CTWB
  • Ignition System
    • 3.0L - Engine Mechanical - General & Technical Data - Engine Code(S): CJTB, CJTC, CNAA, CJWB, CJWC, CJWE, CTWA, CTWB
    • 3.0L - Generic Scan Tool - Engine Code: CATA
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB - Engine DTC Tables (Engine Control Module (2013-2014 My))
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB - Engine DTC Tables (Engine Control Module (2015 My))
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB - Transmission DTC Tables & Diagnostic Procedures
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB (2 Of 2)
    • 3.0L - Ignition/Glow Plug System - Engine Code(S): CJTB, CJTC, CNAA, CJWB, CJWC, CJWE, CTWA, CTWB
  • Mode 6
    • 3.0L - Generic Scan Tool - Engine Code: CATA
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB (2 Of 2)
  • Remove, Overhaul & Install
    • 3.0L - Engine Mechanical - General & Technical Data - Engine Code(S): CJTB, CJTC, CNAA, CJWB, CJWC, CJWE, CTWA, CTWB
  • Specifications
    • Firing Order & Cylinder Identification
  • System
    • 3.0L - Generic Scan Tool - Engine Code: CATA
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB - Engine DTC Tables (Engine Control Module (2013-2014 My))
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB - Engine DTC Tables (Engine Control Module (2015 My))
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB - Transmission DTC Tables & Diagnostic Procedures
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB (2 Of 2)
  • Testing & Diagnosis
    • 3.0L - Generic Scan Tool - Engine Code: CATA
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB - Engine DTC Tables (Engine Control Module (2013-2014 My))
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB - Engine DTC Tables (Engine Control Module (2015 My))
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB - Transmission DTC Tables & Diagnostic Procedures
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB (2 Of 2)
  • Tune-Up
    • 3.0L - Engine Mechanical - General & Technical Data - Engine Code(S): CJTB, CJTC, CNAA, CJWB, CJWC, CJWE, CTWA, CTWB
    • 3.0L - Generic Scan Tool - Engine Code: CATA
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB - Engine DTC Tables (Engine Control Module (2013-2014 My))
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB - Engine DTC Tables (Engine Control Module (2015 My))
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB - Transmission DTC Tables & Diagnostic Procedures
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB (2 Of 2)
    • 3.0L - Ignition/Glow Plug System - Engine Code(S): CJTB, CJTC, CNAA, CJWB, CJWC, CJWE, CTWA, CTWB
• 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 - Engine Code(S): CTWA & CTWB
  • 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
    • Automatic Transmission 0C8 - General & Technical Data
    • CANADIAN Model Cross-Reference
  • Metric Conversions
    • Engine Displacement Conversion Table - ECAT
    • Metric Conversions
  • OEM General Information
    • Automatic Stop/Start Disable
    • Wiring
  • Reset Procedures
    • ATEQ TPMS Reset Procedure (11)
    • Maintenance Reminder Light (Reset Procedures)
    • Tire Pressure Monitor Systems
  • Specifications Index
    • Common Specifications & Procedures
  • Steering
    • Map - Steering, Suspension, Wheel Alignment, Wheels & Tires
    • Wheel Alignment Theory & Operation - General Information
  • Towing
    • Immobilizer And Trailer Hitch
  • Traction Control Disable Procedures
  • Trouble Shooting - Manual Transmission - General Information
• Heating, Ventilation & A/C (HVAC)
  • General Servicing
    • Cabin Air Filter
    • Refrigerant R134A Servicing (1 Of 2)
    • Refrigerant R134A Servicing (2 Of 2)
  • HVAC Control Systems
    • Heating, Ventilation & Air Conditioning
    • Refrigerant R134A Servicing (1 Of 2)
    • Refrigerant R134A Servicing (2 Of 2)
• Maintenance
  • Procedures
    • Fluid Capacity Tables
    • Maintenance Intervals
    • Maintenance Reminder Light (Reset Procedures)
• Restraints
  • Air Bag, SRS
    • Body Interior - General & Technical Data
    • Seat Frames
  • Passive Restraints
    • Body Interior - General & Technical Data
• Steering
  • Manual Steering
    • STEERING (1 Of 2)
    • STEERING (2 Of 2)
    • Suspension, Wheels, Steering - General & Technical Data
  • Power Steering
    • STEERING (1 Of 2)
    • STEERING (2 Of 2)
    • Suspension, Wheels, Steering - General & Technical Data
  • Steering Column
    • STEERING (1 Of 2)
    • STEERING (2 Of 2)
  • Steering Control Systems
    • Exterior Lights & Switches
  • Steering Gear
    • STEERING (1 Of 2)
    • STEERING (2 Of 2)
  • Steering Linkage
    • STEERING (1 Of 2)
    • STEERING (2 Of 2)
• Suspension
  • Electronic Suspension
    • Rear Suspension
    • Self-Leveling Suspension
  • Front Suspension
    • Front Suspension
    • Suspension, Wheels, Steering - General & Technical Data
    • Wheels & Tire General Information
    • Wheels, Tires & Wheel Alignment
  • Rear Suspension
    • Rear Suspension
    • Suspension, Wheels, Steering - General & Technical Data
    • Wheels & Tire General Information
    • Wheels, Tires & Wheel Alignment
  • Wheel Alignment
    • AUDI Wheel Alignment Specifications - Q7
    • Wheels & Tire General Information
    • Wheels, Tires & Wheel Alignment
  • Wheels & Tire System
    • Suspension, Wheels, Steering - General & Technical Data
    • Wheel & Tire Guide
    • Wheels & Tire General Information
    • Wheels, Tires & Wheel Alignment
• Transmission
  • Automatic Trans
    • 3.0L - Generic Scan Tool - Engine Code(S): CTWA & CTWB (2 Of 2)
    • 8-Speed Automatic Transmission 0C8
    • Automatic Transmission 0C8 - General & Technical Data
    • Controls & Housing - Transfer Case 0BU, Front Final Drive 0BM, 0C1 And 0BN, Rear Final Drive 0BP
    • Controls & Housing System (Rear Final Drive, Transfer Case - 0AQ. Trans 0ATA, 08DA, 09DA, 0BQA)
    • Final Drive & Differential - Transfer Case 0BU, Front Final Drive 0BM, 0C1, 0BN & Rear Final Drive 0BP
    • General & Technical Data - Transfer Case 0BU, Front Final Drive 0BM, 0C1, 0BN & Rear Final Drive 0BP
    • Oil Pan, Oil Screen, Valve Body Selector Lever & MULTIFUNCTION Transmission Range Switch -F125-
    • Torque Converter - Automatic Transmission 0C8
  • Transfer Case
    • Controls & Housing - Transfer Case 0BU, Front Final Drive 0BM, 0C1 And 0BN, Rear Final Drive 0BP
    • Controls & Housing System (Rear Final Drive, Transfer Case - 0AQ. Trans 0ATA, 08DA, 09DA, 0BQA)
    • Final Drive & Differential - Transfer Case 0BU, Front Final Drive 0BM, 0C1, 0BN & Rear Final Drive 0BP
    • General & Technical Data - Transfer Case 0BU, Front Final Drive 0BM, 0C1, 0BN & Rear Final Drive 0BP
  • Transmission Control Systems
    • 8-Speed Automatic Transmission 0C8
    • Controls & Housing - Transfer Case 0BU, Front Final Drive 0BM, 0C1 And 0BN, Rear Final Drive 0BP
    • Controls & Housing System (Rear Final Drive, Transfer Case - 0AQ. Trans 0ATA, 08DA, 09DA, 0BQA)
• External Pages