Repair and Diagnosis

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• Quick Lookups
  • Common Specs & Procedures (A5 Platform)
  • DTC Index - 2.5L (BGP & BGQ Engines)
  • Electrical Component Locations
    • Diagnostic Connector (DLC) Locations
    • Electrical Component Locator
  • Fluids
  • Technical Bulletins
    • Campaigns
    • Safety Recalls
    • Tech Tips
    • Technical Service Bulletins
  • Tire Fitment
  • Wiring Diagrams
    • OEM Connector End Views
    • System Wiring Diagrams
    • Using lemon2025'S System Wiring Diagrams
• Accessories & Equipment
  • Anti-Theft Systems
    • Front Doors, Central Locking System
    • Interior Lights, Switches
    • Interior Lights, Switches - General Information
    • Rear Doors
  • Communication Devices
  • Entertainment Systems
    • Communication
    • Interior Lights, Switches
    • Interior Lights, Switches - General Information
  • Exterior Lights
    • Exterior Lights, Switches
    • Exterior Lights, Switches - General Information
  • Gauges & Instrument Panels
    • Instruments
  • Horns
    • Communication
  • Infotainment
    • Communication
    • Interior Lights, Switches
    • Interior Lights, Switches - General Information
  • Interior/Exterior Trim
    • Exterior Equipment
    • Interior Equipment
    • Interior Trim
    • Rear Doors
  • Interior/Illumination Lights
    • Interior Lights, Switches
    • Interior Lights, Switches - General Information
  • Mirrors
    • Exterior Equipment
    • Interior Equipment
  • Seats
    • Interior Equipment
    • Seat Frames
    • Seat Upholstery, Covers
  • Window Motors & Regulators
    • Exterior Equipment
    • Front Doors, Central Locking System
    • Glass, Window Regulators
    • Rear Doors
  • Wiper/Washer Systems
    • Wiper/Washer Systems
    • Wiper/Washer Systems - General Information
  • Wiring System (Data Link Connectors, Pwr Dist., Grnd Dist.)
    • Wiring
    • Wiring - General Information
• Body & Frame
  • Door Locks
    • Front Doors, Central Locking System
    • Interior Lights, Switches
    • Interior Lights, Switches - General Information
    • Rear Doors
  • Exterior Body Panels
    • Body - Front
    • Bumpers
    • Exterior Body Panels (Hood, Lids)
    • Exterior Equipment
    • Front Doors, Central Locking System
    • Rear Doors
  • Exterior/Interior Trim
    • Exterior Equipment
    • Interior Equipment
    • Interior Trim
    • Rear Doors
  • Frames, Subframes & Crossmembers
    • Exterior Equipment
  • Mirrors
    • Exterior Equipment
    • Interior Equipment
  • Seats
    • Interior Equipment
    • Seat Frames
    • Seat Upholstery, Covers
  • Sun Roof/T-Top/Convertible Top
    • Sunroof
  • Towing Systems
    • Exterior Equipment
    • General, Technical Data - Towing Guide
  • Windows
    • Exterior Equipment
    • Front Doors, Central Locking System
    • Glass, Window Regulators
    • Rear Doors
• Brakes
  • Anti-Lock Brakes
    • Antilock Brake System
  • Brakes Control Systems
    • General, Technical Data - Brake System
  • Mechanical - Hydraulic
    • General, Technical Data - Brake System
    • Hydraulic Components
    • Mechanical Components
  • Parking Brake System
    • General, Technical Data - Brake System
    • Mechanical Components
  • Traction Control
    • Antilock Brake System
• Drivelines & Axles
  • Axle Shafts
    • Front Suspension
    • Rear Suspension
  • Driveshaft & Universal Joints
    • Final Drive, Differential - 6-Speed Automatic Transmission 09G (As Of 04.2010)
    • Final Drive, Differential - 6-Speed Automatic Transmission 09G (As Of 07.2011)
  • Wheel Hubs
    • Front Suspension
    • Rear Suspension
• Electrical
  • Body Electrical
    • OEM Connector End Views
    • Wiring
    • Wiring - General Information
  • Charging Systems
    • Battery, Starter, Generator, Cruise Control
    • Battery, Starter, Generator, Cruise Control - General Information
  • Component Locations
    • Diagnostic Connector (DLC) Locations
    • Electrical Component Locator
  • Fuses & Circuit Breakers
    • Fuses & Circuit Breakers (A5 Platform)
    • Wiring
    • Wiring - General Information
  • Gauges
    • Instruments
  • Horns
    • Communication
  • Motors, Switches, Relays
    • OEM Connector End Views
    • Wiring
    • Wiring - General Information
  • Starter
    • Battery, Starter, Generator, Cruise Control
    • Battery, Starter, Generator, Cruise Control - General Information
  • Wiring Diagrams
    • OEM Connector End Views
    • System Wiring Diagrams
    • Using lemon2025'S System Wiring Diagrams
• Engine Mechanical
  • Cooling Fan
    • 2.5L - Cooling System - Engine Code(S): BGP, BGQ, CBTA & CBUA
  • Cooling System (Mechanical)
    • 2.5L - Cooling System - Engine Code(S): BGP, BGQ, CBTA & CBUA
    • Maintenance, Diagnosis - Fluid Capacity Tables
  • Exhaust
    • 2.5L - Exhaust System, Emission Controls - Engine Code(S): BGP & BGQ (As Of 06.2006)
    • 2.5L - Exhaust System, Emission Controls - Engine Code(S): BGP, BGQ, CBTA & CBUA (As Of 11.2011)
    • 2.5L - General, Technical Data - Engine Mechanical, Fuel Injection And Ignition - Engine Code(S): BGP, BGQ, CBTA & CBUA
    • General, Technical Data - 6-Speed Automatic Transmission 09G (As Of 07.2011)
  • Fuel System
    • 2.5L - Fuel Supply - Engine Code(S): BGP & BGQ (As Of 06.2006)
    • 2.5L - Fuel Supply - Engine Code(S): BGP, BGQ, CBTA & CBUA (As Of 11.2011)
    • 2.5L - General, Technical Data - Engine Mechanical, Fuel Injection And Ignition - Engine Code(S): BGP, BGQ, CBTA & CBUA
    • 2.5L - General, Technical Data - Fuel Supply System - Engine Code(S): BGP, BGQ, CBTA & CBUA
    • 2.5L - MULTIPORT Fuel Injection - Engine Code(S): BGP & BGQ (As Of 06.2006)
    • 2.5L - MULTIPORT Fuel Injection - Engine Code(S): BGP, BGQ, CBTA & CBUA (As Of 11.2011)
    • General, Technical Data - 6-Speed Automatic Transmission 09G (As Of 07.2011)
  • Lubrication System
    • 2.5L - General, Technical Data - Engine Mechanical, Fuel Injection And Ignition - Engine Code(S): BGP, BGQ, CBTA & CBUA
    • 2.5L - Lubrication - Engine Code(S): BGP, BGQ, CBTA & CBUA
    • General, Technical Data - 6-Speed Automatic Transmission 09G (As Of 07.2011)
  • Mechanical
    • 2.5L - Crankshaft, Cylinder Block - Engine Code(S): BGP, BGQ, CBTA & CBUA
    • 2.5L - Cylinder Head, VALVETRAIN - Engine Code(S): BGP, BGQ, CBTA & CBUA
    • 2.5L - Engine Assembly - Engine Code(S): BGP, BGQ, CBTA & CBUA
    • 2.5L - General, Technical Data - Engine Mechanical, Fuel Injection And Ignition - Engine Code(S): BGP, BGQ, CBTA & CBUA
    • General, Technical Data - 6-Speed Automatic Transmission 09G (As Of 07.2011)
  • Starter
    • Battery, Starter, Generator, Cruise Control
    • Battery, Starter, Generator, Cruise Control - General Information
• Engine Performance
  • Emissions
    • Emission Applications
    • Emission Control Abbreviations
    • State Emission Standards - Diesel
    • State Emission Standards - Gas
  • Fuel Delivery
    • 2.5L - Fuel Supply - Engine Code(S): BGP & BGQ (As Of 06.2006)
    • 2.5L - Fuel Supply - Engine Code(S): BGP, BGQ, CBTA & CBUA (As Of 11.2011)
    • 2.5L - General, Technical Data - Engine Mechanical, Fuel Injection And Ignition - Engine Code(S): BGP, BGQ, CBTA & CBUA
    • 2.5L - General, Technical Data - Fuel Supply System - Engine Code(S): BGP, BGQ, CBTA & CBUA
    • 2.5L - MULTIPORT Fuel Injection - Engine Code(S): BGP & BGQ (As Of 06.2006)
    • 2.5L - MULTIPORT Fuel Injection - Engine Code(S): BGP, BGQ, CBTA & CBUA (As Of 11.2011)
    • General, Technical Data - 6-Speed Automatic Transmission 09G (As Of 07.2011)
  • Ignition System
    • 2.5L - General, Technical Data - Engine Mechanical, Fuel Injection And Ignition - Engine Code(S): BGP, BGQ, CBTA & CBUA
    • 2.5L - Ignition/Glow Plug System - Engine Code(S): BGP & BGQ (As Of 06.2006)
    • 2.5L - Ignition/Glow Plug System - Engine Code(S): BGP, BGQ, CBTA & CBUA (As Of 11.2011)
    • General, Technical Data - 6-Speed Automatic Transmission 09G (As Of 07.2011)
  • Mode 6
    • 2.5L - Generic Scan Tool - Engine Code(S): BGP & BGQ
  • Remove, Overhaul & Install
    • 2.5L - General, Technical Data - Engine Mechanical, Fuel Injection And Ignition - Engine Code(S): BGP, BGQ, CBTA & CBUA
    • 2.5L - Generic Scan Tool - Engine Code(S): BGP & BGQ
    • General, Technical Data - 6-Speed Automatic Transmission 09G (As Of 07.2011)
  • Specifications
    • Firing Order & Cylinder Identification
  • System
    • 2.5L - Fuel Supply - Engine Code(S): BGP & BGQ (As Of 06.2006)
    • 2.5L - Fuel Supply - Engine Code(S): BGP, BGQ, CBTA & CBUA (As Of 11.2011)
    • 2.5L - Generic Scan Tool - Engine Code(S): BGP & BGQ
  • Testing & Diagnosis
    • 2.5L - Fuel Supply - Engine Code(S): BGP & BGQ (As Of 06.2006)
    • 2.5L - Fuel Supply - Engine Code(S): BGP, BGQ, CBTA & CBUA (As Of 11.2011)
    • 2.5L - Generic Scan Tool - Engine Code(S): BGP & BGQ
  • Tune-Up
    • 2.5L - General, Technical Data - Engine Mechanical, Fuel Injection And Ignition - Engine Code(S): BGP, BGQ, CBTA & CBUA
    • 2.5L - Ignition/Glow Plug System - Engine Code(S): BGP & BGQ (As Of 06.2006)
    • 2.5L - Ignition/Glow Plug System - Engine Code(S): BGP, BGQ, CBTA & CBUA (As Of 11.2011)
    • General, Technical Data - 6-Speed Automatic Transmission 09G (As Of 07.2011)
• General Information
  • Abbreviations
    • Commonly Used Abbreviations - General Information
    • Emission Control Abbreviations
  • Accessories & Equipment
    • Exterior Lights, Switches - General Information
    • Interior Lights, Switches - General Information
  • 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
  • OBD-II Drive Cycles
  • 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 - 2.5L (BGP & BGQ Engines)
  • Electrical
    • Battery, Starter, Generator, Cruise Control - General Information
    • Interior Lights, Switches - General Information
    • 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
    • Euro English-To-U.S. Translations
  • Metric Conversions
    • Engine Displacement Conversion Table - ECAT
    • Metric Conversions
  • OEM General Information
    • Wiring
    • Wiring - General Information
  • Reset Procedures
    • ATEQ TPMS Reset Procedure
    • Maintenance Reminder Light (Reset Procedures)
    • Tire Pressure Monitor Systems
  • Specifications Index
    • Common Specs & Procedures (A5 Platform)
  • Steering
    • Map - Steering, Suspension, Wheel Alignment, Wheels & Tires
    • Wheel Alignment Theory & Operation - General Information
  • Suspension
    • Wheels, Tires, Wheel Alignment - General Information
  • Traction Control Disable Procedures
  • Trouble Shooting - Manual Transmission - General Information
• Heating, Ventilation & A/C (HVAC)
  • General Servicing
    • Cabin Air Filter - A5G Platform
  • HVAC Control Systems
    • Air Conditioning
    • General, Technical Data - Heating, Ventilation & Air Conditioning
    • Heating, Ventilation (A5 Platform)
• Maintenance
  • Procedures
    • Maintenance Reminder Light (Reset Procedures)
    • Maintenance, Diagnosis - Fluid Capacity Tables
    • Maintenance, Diagnosis - Maintenance Intervals
    • Maintenance, Diagnosis - Maintenance Procedures
  • Schedule
    • Maintenance, Diagnosis - Maintenance Intervals
• Restraints
  • Air Bag, SRS
    • Passenger Protection, Airbags, Seat Belts
  • Passive Restraints
    • Interior Equipment
    • Passenger Protection, Airbags, Seat Belts
• Steering
  • Manual Steering
  • Power Steering
  • Steering Column
  • Steering Gear
  • Steering Linkage
• Suspension
  • Front Suspension
    • Front Suspension
    • General, Technical Data - Suspension, Wheels & Steering
  • Rear Suspension
    • General, Technical Data - Suspension, Wheels & Steering
    • Rear Suspension
  • Wheel Alignment
    • Wheels, Tires, Wheel Alignment
    • Wheels, Tires, Wheel Alignment - General Information
    • Wheels, Tires, Wheel Alignment - Specifications
  • Wheels & Tire System
    • Exterior Equipment
    • General, Technical Data - Suspension, Wheels & Steering
    • Wheels, Tires, Wheel Alignment
    • Wheels, Tires, Wheel Alignment - General Information
    • Wheels, Tires, Wheel Alignment - Specifications
• Transmission
  • Automatic Trans
    • Controls, Housing - 6-Speed Automatic Transmission 09G (As Of 04.2010)
    • Controls, Housing - 6-Speed Automatic Transmission 09G (As Of 07.2011)
    • Final Drive, Differential - 6-Speed Automatic Transmission 09G (As Of 04.2010)
    • Final Drive, Differential - 6-Speed Automatic Transmission 09G (As Of 07.2011)
    • Gears, Hydraulic Controls - 6-Speed Automatic Transmission 09G (As Of 04.2010)
    • Gears, Hydraulic Controls - 6-Speed Automatic Transmission 09G (As Of 07.2011)
    • Gears, Hydraulic Controls - Automatic Transmission 09G (As Of 06.2006)
    • General, Technical Data - 6-Speed Automatic Transmission 09G (As Of 04.2010)
    • Torque Converter - 6-Speed Automatic Transmission 09G (As Of 04.2010)
    • Torque Converter - 6-Speed Automatic Transmission 09G (As Of 07.2011)
  • Clutch
    • Gears, Hydraulic Controls - 6-Speed Automatic Transmission 09G (As Of 04.2010)
    • Gears, Hydraulic Controls - Automatic Transmission 09G (As Of 06.2006)
  • Transmission Control Systems
    • Controls, Housing - 6-Speed Automatic Transmission 09G (As Of 04.2010)
    • Controls, Housing - 6-Speed Automatic Transmission 09G (As Of 07.2011)
• External Pages