Wiring diagrams for Audi TT 8N (1998-2003)

Automatic a/c circuit

Anti-lock brakes circuit, with electronic stability program

Anti-theft circuit, coupe Anti-theft circuit, roadster

Computer data lines circuit

Cooling fan circuit

Cruise control circuit

Defoggers circuit, coupe Defoggers circuit, roadster

Wiring diagram engine performance 1.8l

Back-up lamps circuit Exterior lamps circuit, with drl, with driver information center Exterior lamps circuit, with drl, without driver information center Exterior lamps circuit, without drl, with driver information center Exterior lamps circuit, without drl, without driver information center

Ground distribution circuit

Headlamps circuit, with drl Headlamps circuit, with high intensity gas discharge headlights Headlamps circuit, without drl without high intensity gas discharge headlights, without drl, without high intensity gas discharge headlights Headlamps leveling circuit, with high intensity gas discharge headlights

Horn circuit

Auto check system circuit Instrument cluster circuit

Courtesy lamps circuit Instrument illumination circuit

Navigation circuit

Power distribution circuit

Power door locks circuit, coupe Power door locks circuit, roadster

Power mirrors circuit

Heated seats circuit

Convertible top circuit

Power windows circuit

Radio circuit, with bose system Radio circuit, without bose system

Charging circuit Starting circuit

Supplemental restraints circuit

4wd circuit

Front wiper/washer & headlamp washer circuit

B+ D+ GENERATOR BLOCKING DIODE DISTRIBUTOR IGNITION COIL CAPACITOR DRIVER'S DOOR LOCK ASSEMBLY HIGH TONE HORN IGNITION COIL, IGNITION COIL 2, IGNITION COIL 3, IGNITION COIL 4 IGNITION GROUND BRAKE SW PARK BRK DIAG BATTERY CAN-L CAN-H LEFT WASHER NOZZLE HEATER LEFT WASHER NOZZLE HEATER DRIVER'S SIDE HEATED OUTSIDE MIRROR LOW TONE HORN PASSENGER'S DOOR LOCK ASSEMBLY RIGHT WASHER NOZZLE HEATER TELEPHONE TRANSCEIVER

132 KW ENGINE, CODE ATC 165 KW ENGINE, CODE AMU 165 KW ENGINE, CODE AMU 132 KW ENGINE, CODE ATC CD CHANGER COMPARTMENT CENTRAL LOCKING MOTOR ENGINE COOLANT LEVEL WARNING FUEL TANK LID UNLOCK MOTOR LEFT HEADLIGHT BEAM ADJUSTING MOTOR LEFT WINDOW MOTOR OIL PRESS MOTOR OIL PRESSURE POSITIONING MOTOR REMOTE REAR LID UNLOCK MOTOR RIGHT HEADLIGHT ADJUSTING MOTOR LEFT HEADLIGHT ADJUSTING MOTOR RIGHT HEADLIGHT BEAM ADJUSTING MOTOR RIGHT WINDOW MOTOR STORAGE COMPARTMENT CENTRAL LOCKING MOTOR WIND DEFLECTOR MOTOR WINDOW MOTOR WINDSHIELD WIPER MOTOR

ANTENNA SPLITTER NAVIGATION SYSTEM ANTENNA RADIO ANTENNA RADIO/ TELEPHONE ANTENNA RADIO/ TELEPHONE ANTENNA AMPLIFIER REAR WINDOW DEFOGGER/ WINDOW ANTENNA REAR WINDOW DEFOGGER/ANTENNA W/ WINDOW ANTENNA W/O WINDOW ANTENNA WINDSHIELD ANTENNA SUPPRESSION FILTER

ASR/ESP BUTTON BOARD COMPUTER RESET BUTTON HORN BUTTON WINDSHIELD WIPER INTERMITTENT REGULATOR

DATA LINK CONNECTOR

A/C CONTROL HEAD LAMP CONTROL MODULE COOLANT FAN CONTROL MODULE ABS CONTROL MODULE AIR BAG CONTROL MODULE LEFT FRONT POWER WINDOW CONTROL MODULE ALL- WHEEL DRIVE CONTROL MODULE CENTRAL LOCKING CONTROL MODULE COOLANT FAN CONTROL MODULE EMERGENCY FLASHER SWITCH, AIRBAG CONTROL MODULE, CENTRAL LOCKING CONTROL MODULE FRESH AIR BLOWER CONTROL MODULE HEADLIGHT BEAM ADJUSTING CONTROL MODULE HIGH INTENSITY GAS DISCHARGE LAMP CONTROL MODULE INSTRUMENT CLUSTER, CENTRAL LOCKING CONTROL MODULE LAMP CONTROL MODULE LEFT FRONT POWER WINDOW CONTROL MODULE LEFT FRONT POWER WINDOW CONTROL MODULE RIGHT FRONT POWER WINDOW CONTROL MODULE MOTRONIC ENGINE CONTROL MODULE MOTRONIC ENGINE CONTROL MODULE MOTRONIC ENGINE CONTROL MODULE POWER SUPPLY RELAY MOTRONIC ENGINE CONTROL MODULE POWER SUPPLY RELAY NAVIGATION CONTROL MODULE NAVIGTION CONTROL MODULE PASSENGER DOOR LOCK ASSEMBLY, RIGHT FRONT POWER WINDOW CONTROL MODULE RADIO, SECONDARY AIR INJECTION SOLENOID PUMP MOTOR, ABS CONTROL MODULE RIGHT FRONT POWER WINDOW CONTROL MODULE WIND DEFLECTOR CONTROL MODULE

FUSE 2 FUSE 3 FUSE 5 FUSE 6 FUSE 7 FUSE 7 FUSE 31 FUSE 8 FUSE 9 FUSE 10 FUSE 11 FUSE 12 FUSE 13 FUSE 14 FUSE 15 FUSE 16 FUSE 16 FUSE 44 FUSE 18 FUSE 19 FUSE 19 FUSE 17 FUSE 20 FUSE 21 FUSE 22 FUSE 23 FUSE 24 FUSE 25 FUSE 26 FUSE 27 FUSE 29 FUSE 31 FUSE 36 FUSE 37 FUSE 38 FUSE 39 FUSE 40 FUSE 40 FUSE 41 FUSE 42 FUSE 44 FUSE 131 FUSE 132 FUSE 133 FUSE 134 FUSE 138 FUSE 162 FUSE 163 FUSE 164 FUSE 229 FUSE 232 FUSE 234 FUSE 243 FUSE FUSE FUSE FUSE FUSE FUSE FUSE FUSE FUSE FUSE PANEL FUSE PANEL FUSE 228 HOT IN RUN OR START FUSE PANEL FUSE 11 MAIN FUSE BOX/ BATTERY FUSE 131

HEADLIGHT WASHER PUMP LEFT FRONT HEADLIGHT/ PARK LIGHT ASSEMBLY LEFT HEADLIGHT/ PARKLIGHT ASSEMBLY PARK RIGHT FRONT HEADLIGHT/ PARK LIGHT ASSEMBLY RIGHT HEADLIGHT/ PARKLIGHT ASSEMBLY PARK

DRIVER'S BACKREST HEATING ELEMENT DRIVER'S SEAT HEATING ELEMENT DRIVER'S SEAT SIDE BOLSTER HEATER PASSENGER'S BACKREST HEATING ELEMENT PASSENGER'S SEAT HEATING ELEMENT PASSENGER'S SEAT SIDE BOLSTER HEATER

ASR/ESP CONTROL INDICATOR INSTRUMENT CLUSTER ABS WARNING INDICATOR MALFUNCTION INDICATOR LAMP OPEN TRUNK IND MIL INDICATOR

ELECTRONIC POWER CONTROL WARNING LAMP EXTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM HEAD- LIGHTS HID LAMP HOT WITH LIGHTS ON INTERIOR LIGHTS SYSTEM POWER TOPS SYSTEM INTERIOR LIGHTS SYSTEM POWER TOPS SYSTEM ANTI-THEFT SYSTEM LICENSE PLATE LIGHTS LICENSE PLATE LIGHTS, HEATED REAR WINDOW, LEFT LUGGAGE COMPARTMENT LIGHT POWER WINDOWS SYSTEM INTERIOR LIGHTS SYSTEM W/ HIGH INTENSITY GAS DISCHARGE LIGHTS

AFTER-RUN COOLANT PUMP HALDEX COUPLING PUMP WINDSHIELD WASHER PUMP

BRAKE LIGHT DISABLE RELAY CONVERTIBLE TOP HYDRAULIC PUMP RELAY CONVERTIBLE TOP HYDRAULIC PUMP/PUMP RELAY DUAL HORN RELAY EMERGENCY FLASHER RELAY FOG LIGHT RELAY FUEL PUMP RELAY HOT W/ LOAD REDUCTION RELAY ENERGIZED HOT W/LOAD REDUCTION RELAY ENERGIZED LOAD REDUCTION RELAY REAR WINDOW DEFOGGER RELAY STARTING INTERLOCK RELAY WIPER/ WASHER INTERMITTENT RELAY WIPER/WASHER INTERMITTENT RELAY

A/C HIGH PRESSURE SENSOR PASSENGER'S HEATED SEAT ADJUSTER ABS CONTROL MODULE STEERING ANGLE SENSOR ASR/ESP BUTTON BRAKE BOOSTER SENSOR ROTATION RATE SENSOR BRAKE PRESSURE SENSOR DRIVERS HEATED SEAT TEMPER- ATURE SENSOR ENGINE COOLANT TEMPERATURE SENSOR FUEL LEVEL SENSOR HEATED OXYGEN SENSOR 1 HIGH PRESSURE SENSOR HYD TEMP SENSOR HYDRAULIC TEMPERATURE SENSOR LEFT FRONT BRAKE PAD WEAR SENSOR OIL LEVEL THERMAL SENSOR OUTSIDE AIR TEMPERATURE SENSOR OUTSIDE AIR TEMPERATURE SWITCH, OUTSIDE AIR TEMPERATURE SENSOR PASSENGERS HEATED SEAT TEMPER- ATURE SENSOR SPEEDOMETER VEHICLE SPEED SENSOR BACK-UP LIGHT SWITCH STEERING ANGLE SENSOR TRANSVERSE ACCEL- ERATION SENSOR STEERING ANGLE SENSOR

LEFT REAR WOOFER SPEAKER RIGHT REAR SPEAKER

ASR/ESP SWITCH BACK-UP LIGHT SWITCH BOARD COMPUTER FUNCTION SELECTOR SWITCH BRAKE FLUID LEVEL WARNING SWITCH BRAKE LIGHT SWITCH CONTACT SWITCH CONVERTIBLE TOP COVER DETECTION SWITCH CONVERTIBLE TOP COVER DETECTION SWITCH 2 CONVERTIBLE TOP FRONT LOCK SWITCH CONVERTIBLE TOP LATCH OPEN POSITION SWITCH CONVERTIBLE TOP OPEN POSITION SWITCH CONVERTIBLE TOP OPERATION SWITCH CONVERTIBLE TOP SWITCH COOLANT FAN CONTROL THERMAL SWITCH CRUISE CONTROL SWITCH DRIVER'S DOOR CONTACT SWITCH DRIVER'S DOOR LOCK ASSEMBLY DOOR CONTACT SWITCH DRIVER'S SIDE INTERIOR LOCK SWITCH EMERGENCY FLASHER SWITCH FOG LIGHT SWITCH HEADLIGHT SWITCH LIGHT FOG LIGHT SWITCH OFF FOGLIGHT SWITCH LIGHT FUNCTION SELECTOR SWITCH HARDTOP DETECTOR SWITCH HEAD LIGHT SWITCH HEADLIGHT DIMMER/ FLASHER SWITCH HEADLIGHT SWITCH LIGHT HIGH PRESS SWITCH 1 HIGH PRESS SWITCH 2 HOT AT ALL TIMES IGNITION SWITCH HOT W/LIGHT SWITCH IN PARK OR HEAD POSITION IGNITION SWITCH IGNITION/ STARTER SWITCH INSTRUMENT PANEL LIGHT DIMMER SWITCH INSTRUMENT PANEL LIGHT DIMMER SWITCH LEFT SEAT BELT SWITCH KEY SWITCH KEY-IN IGNITION SWITCH LEFT FRONT WINDOW SWITCH LIGHT SWITCH LIGHT SWITCH HEAD LIGHT SWITCH/ FOGLIGHT SWITCH MIRROR ADJUSTMENT SWITCH ON LEFT MAKE-UP MIRROR LIGHT SWITCH PARK LIGHT SWITCH PASSENGER AIR BAG OFF SWITCH PASSENGER COMPARTMENT MONITORING SWITCH PASSENGER SIDE AIR BAG KEY SWITCH PASSENGER'S COMPARTMENT MONITORING SWITCH PASSENGER'S DOOR LOCK ASSEMBLY DOOR CONTACT SWITCH REAR WINDOW DEFOGGER SWITCH RELEASE SWITCH REMOTE FUEL TANK DOOR SWITCH REMOTE REAR LID UNLOCK SWITCH REMOTE REAR LID UNLOCK SWITCH DRIVER SIDE INTERIOR LOCK SWITCH RIGHT FRONT WINDOW SWITCH RIGHT MAKE-UP MIRROR LIGHT SWITCH TRUNK LID CENTRAL LOCKING SWITCH TURN SIGNAL SWITCH WASHER FLUID LEVEL WARNING SWITCH WASHER SWITCH WIND DEFLECTOR SWITCH WINDSHIELD WIPER/WASHER SWITCH

PILOT VALVE 1 PILOT VALVE 2 SOLENOID VALVE TANK VENTILATION VALVE TURBOCHARGE RECIRCULATING VALVE

BLK BRN/ WIRE BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/RED WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/ORG WIRE BLU/RED WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BRN BLK/ WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/RED WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/RED WIRE GRY/VIO WIRE GRY/WHT WIRE GRY/YEL WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE ORG/BRN WIRE ORG/VIO WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RUN WIRE VIO WIRE VIO/BLK WIRE VIO/BLU WIRE VIO/BRN WIRE VIO/GRN WIRE VIO/GRY WIRE VIO/RED WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/RED WIRE WHT/VIO WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/GRY WIRE YEL/RED WIRE YEL/VIO WIRE YEL/WHT WIRE

2 5 CAN-H CAN-L A/C CLUTCH A/C CONTROL HEAD A/C SYSTEM ABS SYSTEM, TRANSMISSIONS SYSTEM, AIR BAG ABS WARNING MIL AIR CONDITIONING SYSTEM ANTI-THEFT IMOBILIZER IND PARK LIGHT IND ANTI-THEFT SYSTEM ANTI-THEFT SYSTEM POWER WINDOWS SYSTEM ASHTRAY LIGHT ASR/ ESP IND HIGH BEAM IND AUTO CHECK SYSTEM AWD FWD BACK- UP LIGHT BRAKE BOOSTER BRAKE FLUID LEVEL BRAKE PAD WEAR IND SEAT BELT IND BREAKER 43 CHARGING SYSTEM CIGARETTE LIGHTER CIGARETTE LIGHTER LIGHT CIRCUIT BREAKER 43 COMBINATION PROCESSOR COMPUTER DATA LINES SYSTEM COOLANT FAN COOLANT FAN 2 COOLANT FUEL RESERVE WARN LEVEL/ TEMP WARN CRUISE CONTROL SYSTEM DEFOGGER SYSTEM DIGITAL CLOCK DOOR LOCKS SYSTEM DOOR LOCKS SYSTEM POWER TOPS/INSTRUMENT CLUSTER SYSTEMS DRIVER SIDE HEATED OUTSIDE MIRROR DRIVER'S AIR BAG IGNITER DRIVER'S HEATED SEAT ADJUSTER DRIVER'S HEATED SEAT ADJUSTER PASSENGER'S HEATED SEAT ADJUSTER DRIVER'S SIDE AIR BAG IGNITER DRIVER'S SIDE MIRROR ECT GAUGE FOG LIGHT FOGLIGHT IND FRESH AIR BLOWER FROM VIN FROM VIN UP TO VIN FRONT INTERIOR LIGHT FUEL GAUGE FUEL INJECTORS GEN IND. GLOVE COMPARTMENT LIGHT HARD TOP SOFT TOP HEAD OFF HEAD OFF PARK HEAD PARK HEADLAMPS LEVELING CIRCUIT HEADLIGHTS SYSTEM HEATED REAR WINDOW HEATED REAR WINDOW HEATED REAR WINDOW HEATED SEAT ADJUSTERS HIGH BEAM HIGH BEAM IND HIGH MOUNT BRAKE LIGHT HOT AT ALL TIMES HOT AT ALL TIMES HOT IN RUN OR START HOT AT ALL TIMES OFF HOT IN HOT IN ON OR START HOT IN RUN OR START HOT IN START OR RUN HOT W/ HIGH BEAMS ON HOT WITH KEY IN IGNITION ILLUM ILLUM INSIDE CENTER LOUDSPEAKER INSTRUMENT CLUSTER INSTRUMENT CLUSTER COMBINATION PROCESSOR INSTRUMENT CLUSTER SYSTEM INSTRUMENT ILLUMINATION CIRCUIT LEFT "A" PILLAR MICROSWITCH LEFT DOOR WARNING LIGHT LEFT FRONT ABS INLET LEFT FRONT ABS OUTLET LEFT FRONT READING LIGHT LEFT FRONT TURN SIGNAL LIGHT LEFT FRONT TURN SIGNAL LIGHT RIGHT FRONT TURN SIGNAL LIGHT LEFT FRONT WOOFER/ TWEETER SPEAKERS LEFT FRONT WOOFER/TWEETER LEFT MAKE-UP MIRROR LIGHT LEFT REAR ABS INLET LEFT REAR ABS OUTLET LEFT SEAT BELT TENSIONER IGNITER LEFT SIDE TURN SIGNAL LIGHT LEFT TAILIGHT ASSEMBLY LEFT TAILLAMP ASSEMBLY LEFT TURN IND LEFT TURN IND RIGHT TURN IND LUGGAGE COMPARTMENT LIGHT MICRO CENTRAL ELECTRIC MICRO CENTRAL ELECTRIC PANEL MIRROR POSITION MIRROR SELECT OFF HEAD OFF HEAD PARK OFF OFF HEAD PARK PARK OFF ON OFF PARK OIL PRESS WARN ANTI- THEFT WARN ON DOOR OUTSIDE AIR TEMPERATURE DISPLAY PARK BRAKE GEN WARN PASSENGER SIDE AIR BAG OFF WARNING LIGHT PASSENGER SIDE HEATED OUTSIDE MIRROR PASSENGER'S AIR BAG "OFF" WARNING LIGHT PASSENGER'S AIR BAG IGNITER 1 PASSENGER'S HEATED SEAT ADJUSTER PASSENGER'S SIDE AIR BAG IGNITER PASSENGER'S SIDE HEATED OUTSIDE MIRROR PASSENGER'S SIDE MIRROR POWER TOPS SYSTEM POWER TOPS/INSTRUMENT CLUSTER SYSTEMS POWER WINDOW CIRCUIT POWER WINDOWS SYSTEM POWER WINDOWS SYSTEM ANTI-THEFT SYSTEM POWER WINDOWS SYSTEM POWER TOPS SYSTEM INSTRUMENT CLUSTER SYSTEM REAR FOGLIGHT IND REAR WOOFER/ AMPLIFER REMOTE REAR LID UNLOCK RIGHT "A" PILLAR MICROSWITCH RIGHT DOOR WARNING LIGHT RIGHT FRONT ABS INLET RIGHT FRONT ABS OUTLET RIGHT FRONT MAP/ READING LIGHT RIGHT FRONT TURN SIGNAL LIGHT RIGHT FRONT WOOFER/ TWEETER SPEAKERS RIGHT FRONT WOOFER/TWEETER RIGHT MAKE-UP MIRROR LIGHT RIGHT REAR ABS INLET RIGHT REAR ABS OUTLET RIGHT SEAT BELT TENSIONER IGNITER RIGHT SIDE TURN SIGNAL LIGHT RIGHT TAILIGHT ASSEMBLY RIGHT TAILLAMP ASSEMBLY RIGHT TURN IND ROADSTER COUPE ROADSTER ONLY ROADSTER W/ PHONE ROADSTER W/O PHONE SOLID STATE SOUND SYSTEM STARTING SYSTEM STARTING SYSTEM POWER TOPS SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM DOOR LOCKS SYSTEM TAIL STOP TO SPARK PLUGS TURN STOP TURN TURN TAIL STOP UP TO VIN W/ AUTO CHECK SYSTEM W/ DRIVER INFORMATION SYSTEM W/ DRIVER INFORMATION SYSTEM W/O DRIVER INFORMATION SYSTEM W/ NAVIGATION W/O BOSE W/O DRIVER INFORM SYSTEM W/ DRIVER INFORM SYSTEM W/O DRIVER INFORMATION SYSTEM W/O DRIVER INFORMATION SYSTEM W/ DRIVER INFORMATION SYSTEM W/O NAVIGATION WARNING BUZZER WIPER/ WASHER SYSTEM