Manual sections

Wiring diagrams

• 2.7L V6 5V Bi-Turbo (Engine Codes: Apb, Bel)
• 3.0L V6 (Engine Code: Avk)
• 4.2L V8 5V (Engine Codes: Art, Awn, Bbd)
• 5 Spd. Manual Transmission - 01A
• 6 Spd. Manual Transmission - 01E
• 6 Spd. Manual Transmission 01E - Transmission Removal
• Abbreviations
• Air Conditioning
• Anti-Lock/traction Control
• Application
• Automatic HVAC System
• Automatic Trans
• Axle Shafts
• Basic Trouble Shooting
• Blowers, Superchargers & Turbochargers
• Brake System - on Board Diagnostic (OBD) - ABS & ESP
• Brake System - on Board Diagnostic (OBD) - ABS & ESP: Diagnosis
• Brakes
• Cabin Air Filter
• Charging System
• Check Lists
• Clutches Manual & Hydraulic
• Communication Devices
• Computer Relearn
• Cooling Fan
• Cruise Control Systems
• Diagnostic Connector Locations
• Differentials & Drive Axles
• Door Locks & Anti-Theft Systems
• Drive Cycles
• Driveline/axles
• Driveshaft & Universal Joints
• DTC Index
• Electrical Component Locations
• Electronic Suspension
• Emission Applications
• Engine
• Engine Performance
• Exhaust
• Exhaust System, Emission Controls - 2.7L V6 Bi-Turbo - Apb, Bel: Diagnosis
• Exhaust System, Emission Controls, Generic Scan Tool - 3.0L V6 - Avk
• Exterior Body Panels
• Exterior/interior Trim
• Fuel Supply System - All Engines
• Fuel Supply System - All Engines: Diagnosis
• Fuel Supply, Generic Scan Tool - 3.0L V6 Avk
• Fuel System
• Fuses & Circuit Breakers
• Gauges & Instrument Panels
• Heated Glass/defoggers
• Identification
• Ignition System
• Manual Trans
• Mechanical
• Mechanical - Hydraulic
• Metric Conversions
• Mirrors
• Mode 6
• Multiport Fuel Injection (Mfi) - 3.0L V6 Avk
• Multiport Fuel Injection (Mfi), Generic Scan Tool - 3.0L V6 Avk
• Oem General Information
• On Board Diagnostic (OBD) - 2.8L V6 Aha
• On Board Diagnostic (OBD) - 2001 and Up
• On Board Diagnostic (OBD) - 2001 and Up: Diagnosis
• On Board Diagnostic (OBD) - 4.2L V8 5V - Art, Awn
• On Board Diagnostic (OBD) - 5 Spd. Automatic Transmission 01V
• On Board Diagnostic (OBD) - 5 Spd. Automatic Transmission 01V: Diagnosis
• On Board Diagnostic (OBD) - 5 Spd. Automatic Transmission, 01L All Wheel Drive
• On Board Diagnostic (OBD) - 5 Spd. Automatic Transmission, 01L All Wheel Drive: Diagnosis
• On Board Diagnostic (OBD) - Central Locking System, Memory Seats, Ultrasonic Interior Monitor
• On Board Diagnostic (OBD) - Central Locking System, Memory Seats, Ultrasonic Interior Monitor: Diagnosis
• On Board Diagnostic (OBD) - Continuously Variable Transmission (Cvt) 01J
• On Board Diagnostic (OBD) - Continuously Variable Transmission (Cvt) 01J: Diagnosis
• On Board Diagnostic (OBD) - HVAC
• On Board Diagnostic (OBD) - HVAC: Diagnosis
• On Board Diagnostic (OBD) - Radio, Navigation, Steering & Telematics
• On Board Diagnostic (OBD) - Radio, Navigation, Steering & Telematics: Diagnosis
• On Board Diagnostic (OBD) - Suspension & Tire Pressure Monitoring
• On Board Diagnostic (OBD) - Suspension & Tire Pressure Monitoring: Diagnosis
• Overhaul - 01L (Awd)
• Overhaul - 01V
• Procedures
• Reset Procedures
• Restraints
• Seats
• Self Leveling Suspension
• Specifications
• Starter
• Steering
• Steering Column Switches
• Sun Roof/t-Top/convertible Top
• Suspension Front
• Suspension Rear
• Testing & Diagnostics
• Timing Belt
• Traction Control Disable
• Transmission
• Warning System
• Wheel Alignment
• Wiper/washer Systems
• Wiring Diagrams - Engine Performance

Repair manual

On Board Diagnostic (OBD) - HVAC Audi A6 C5 facelift

Step-by-step instructions on "On Board Diagnostic (OBD) - HVAC" for Audi A6 C5 facelift (2001–2004). Pick an article — removal, installation, adjustment and diagnostics with illustrations.

32subsections

32articles

179illustrations

Function

1 article

• Function

Safety precautions

1 article

• Safety precautions 20

Initiating output DTM

1 article

• Initiating output DTM 11

Basic Setting (function 04)

1 article

• Basic Setting (function 04) 3

Basic setting procedure for vehicles up to model year 2001

1 article

• Basic setting procedure for vehicles up to model year 2001 2

Basic setting procedure for vehicles from model year 2002

1 article

• Basic setting procedure for vehicles from model year 2002 2

Continuation for all vehicles

1 article

• Continuation for all vehicles 4

Requirements

1 article

• Requirements

End Output

1 article

• End Output 3

A/C Control Head -E87-, coding

1 article

• A/C Control Head -E87-, coding 10

Read Measuring Value Block (function 08)

1 article

• Read Measuring Value Block (function 08)

Initiating "Read Measuring Value Block" function 08

1 article

• Initiating "Read Measuring Value Block" function 08 6

Read measuring value blocks (vehicles up to model year 2001)

1 article

• Read measuring value blocks (vehicles up to model year 2001) 4

Display group 001: Compressor cut-off conditions, voltage for A/C clutch and at terminal 15

1 article

• Display group 001: Compressor cut-off conditions, voltage for A/C clutch and at terminal 15 39

Interpretation of compressor cut-off condition for display field 1 - 4

1 article

• Interpretation of compressor cut-off condition for display field 1 - 4 40

Display group 017: Measuring values for Sunlight Photo Sensor -G107-, signal from windshield wiper switch for washer pump and windshield wiper

1 article

• Display group 017: Measuring values for Sunlight Photo Sensor -G107-, signal from windshield wiper switch for washer pump and windshield wiper 5

Display group 019: Input signal from auxiliary heating, running light on/off (terminal "58") and version of communication-matrix in A/C Control Head -E87

1 article

• Display group 019: Input signal from auxiliary heating, running light on/off (terminal "58") and version of communication-matrix in A/C Control Head -E87 2

Display groups currently not to be used by dealerships

1 article

• Display groups currently not to be used by dealerships 3

Checking

1 article

• Checking 2

Outside temperature dependent resistance values of temperature sensors in Kohm (Kilo-Ohm)

1 article

• Outside temperature dependent resistance values of temperature sensors in Kohm (Kilo-Ohm) 17

Temperature depending resistance values of sensor

1 article

• Temperature depending resistance values of sensor

Checking pressure signal from High Pressure Switch -G65

1 article

• Checking pressure signal from High Pressure Switch -G65 2

Pressure signal from High Pressure Sensor -G65

1 article

• Pressure signal from High Pressure Sensor -G65 2

For vehicles with A/C compressor regulator valve -N280- (coding of -E87-)

1 article

• For vehicles with A/C compressor regulator valve -N280- (coding of -E87-)

For vehicles with compressors using A/C clutch -N25-(coding of -E87-)

1 article

• For vehicles with compressors using A/C clutch -N25-(coding of -E87-)

Sensor for air quality -G238-, function

1 article

• Sensor for air quality -G238-, function

CAN-bus system, checking

1 article

• CAN-bus system, checking

Bus-system, function

1 article

• Bus-system, function

Isolating possible malfunction causes

1 article

• Isolating possible malfunction causes

Determine malfunction in CAN-bus system

1 article

• Determine malfunction in CAN-bus system 2

Malfunction is indicated only by A/C Control Head -E87

1 article

• Malfunction is indicated only by A/C Control Head -E87

Malfunction indicated in another control module

1 article

• Malfunction indicated in another control module