Wiring Diagrams for Audi A4 B5 facelift (1999-2001)

Automatic a/c circuit

Anti-lock brakes circuit

Anti-theft circuit

Computer data lines circuit

1.8l, cooling fan circuit

2.8l, cooling fan circuit

Cruise control circuit

Defoggers circuit

Wiring diagram engine performance 1.8l

Wiring diagram engine performance 2.8l

Back-up lamps circuit Exterior lamps circuit, with drl with auto check system Exterior lamps circuit, with drl without auto check system Exterior lamps circuit, without drl with auto check system Exterior lamps circuit, without drl without auto check system

Ground distribution circuit

Headlamps circuit Headlamps leveling circuit

Horn circuit

Auto check system circuit Instrument cluster circuit

Courtesy lamp circuit Instrument illumination circuit

Navigation circuit

Power distribution circuit

Heated door locks circuit

Electrochromic mirror circuit Power mirror circuit

Heated seats circuit Left power seat circuit

Power top/sunroof circuit

Power windows circuit

Am/fm stereo circuit, bose except avant Am/fm stereo circuit, bose with avant Am/fm stereo circuit, with cd changer except avant Am/fm stereo circuit, with cd changer with avant

Shift interlock circuit

Charging circuit Starting circuit

Supplemental restraints circuit

A/t circuit

Trunk release circuit

Wiper/washer circuit

ALARM HORN ANTI-LOCK BRAKE SYSTEM ANTI-LOCK BRAKES SYSTEM BATTERY STARTER D+ GENERATOR HIGH TONE HORN IGNITION COIL LEFT DOOR LOCK HEATER LEFT FREQUENCY CROSSOVER TELEPHONE TRANSCEIVER LEFT REAR WOOFER/ AMPLIFIER LOCK OFF LOW TONE HORN RIGHT REAR WOOFER/ AMPLIFIER STARTER TERMINAL 50 TELEPHONE TRANSCEIVER TELEPHONE TRANSCEIVER, TELEPHONE TRANSCEIVER SHIELD WASHER NOZZLE HEATERS

DRIVER'S SEAT BACKREST ADJUSTING MOTOR DRIVER'S SEAT FORE/AFT ADJUSTING MOTOR DRIVER'S SEAT FRONT HEIGHT ADJUSTING MOTOR DRIVER'S SEAT REAR HEIGHT ADJUSTING MOTOR ENGINE COOLANT LEVEL WARNING LEFT HEADLIGHT BEAM ADJUSTMENT MOTOR LEFT REAR DOOR WINDOW MOTOR LEFT WINDOW MOTOR REAR WINDOW WIPER MOTOR, AIRBAG SPIRAL SPRING/RETURN SPRING RIGHT FRONT WINDOW MOTOR LEFT REAR WINDOW MOTOR, RIGHT REAR WINDOW MOTOR RIGHT HEADLIGHT BEAM ADJUSTMENT MOTOR RIGHT REAR DOOR WINDOW MOTOR RIGHT WINDOW MOTOR SUNROOF MOTOR TRUNK LID UNLOCKING MOTOR WINDOW MOTOR WINDSHIELD WIPER MOTOR

ANTENNA AMPLIFIER NAVIGATION SYSTEM ANTENNA REAR WINDOW DEFOGGER REAR WINDOW DEFOGGER/ ANTENNA REAR WINDOW DEFOGGER/ ANTENNA TV ANTENNA AMPLIFIER 1 TV ANTENNA AMPLIFIER 2 TV ANTENNA AMPLIFIER 3 TV ANTENNA AMPLIFIER 4

HORN BUTTON SUNROOF REGULATOR TRIP COMPUTER RESET BUTTON WINDSHIELD WIPER INTERMITTENT REGULATOR

ACCESSORY SOCKET DATA LINK CONNECTOR

ABS CONTROL MODULE EMERGENCY FLASHER SWITCH, AIR BAG CONTROL MODULE FOGLIGHT CONTROL MODULE FRESH AIR BLOWER CONTROL MODULE, A/C CLUTCH RELAY, A/C PRESSURE SWITCH HEADLIGHT LEVELING CONTROL MODULE LEFT HEATED DOOR LOCK CONTROL MODULE LIGHT SWITCH, FOGLIGHTS CONTROL MODULE MOTRONIC ENGINE CONTROL MODULE MOTRONIC ENGINE CONTROL MODULE POWER SUPPLY MULTI-FUNTCION STEERING WHEEL CONTROL MODULE MULTIFUNCTION STEERING WHEEL CONTROL MODULE NAVIGATION CONTROL MODULE NAVIGTION CONTROL MODULE POWER SUNROOF CONTROL MODULE REAR LAMP CONTROL MODULE TRANSMISSION CONTROL MODULE TURN SIGNAL SWITCH, AIR BAG CONTROL MODULE WARNING LIGHT CONTROL MODULE

ABS HYDRAULIC UNIT CD CHANGER UNIT

FUSE 1 FUSE 2 FUSE 3 FUSE 3 FUSE 5 FUSE 5 FUSE 6 FUSE 7 FUSE 8 FUSE 9 FUSE 36 FUSE 12 FUSE 13 FUSE 14 FUSE 14 FUSE 13 FUSE 15 FUSE 15 FUSE 38 FUSE 17 FUSE 17 FUSE 44 FUSE 18 FUSE 19 FUSE 24 FUSE 25 FUSE 26 FUSE 27 FUSE 28 FUSE 29 FUSE 10 FUSE 30 FUSE 31 FUSE 32 FUSE 33 FUSE 30 FUSE 34 FUSE 37 FUSE 38 FUSE 39 FUSE 40 FUSE 42 FUSE 51 FUSE 44 FUSE 51 FUSE 42 FUSE 53 FUSE 84 FUSE 130 FUSE 225 FUSE 228 FUSE 229 FUSE 231 FUSE 234 FUSE FUSE FUSE PANEL FUSE PANEL FUSE FUSE PANEL FUSE 3 FUSE PANEL FUSE 229 FUSE PANEL FUSE 231 FUSE PANEL FUSE 232 HOT IN RUN OR START FUSE PANEL FUSE 10 POWER WINDOW FUSE 37

HEADLIGHT WASHER PUMP RIGHT HIGH BEAM HEADLIGHT

DRIVER'S BACKREST HEATER ELEMENT DRIVER'S SEAT/ HEADREST HEATER ELEMENT PASSENGER'S BACKREST HEATER ELEMENT PASSENGER'S SEAT/ HEADREST HEATER ELEMENT SEAT HEATER REGULATING SWITCHES

MALFUNCTION INDICATOR LAMP MIL INDICATOR

EXTERIOR LIGHTS EXTERIOR LIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM HEAD PARK HEADLIGHTS, EXTERIOR LIGHTS SYSTEM LICENSE PLATE LIGHTS POWER WINDOWS SYSTEM INTERIOR LIGHTS SYSTEM

ABS RETURN FLOW PUMP FUEL PUMP WINDSHIELD WASHER PUMP

3-WAY RELAY CARRIER 3-WAY RELAY CARRIER FUSE 130 8-WAY RELAY CARRIER ABS RETURN FLOW PUMP RELAY ABS SOLENOID VALVE RELAY DAYTIME RUNNING LIGHTS SWITCH- ON RELAY, LIGHT SWITCH DAYTIME RUNNING LIGHTS SWITCH-ON RELAY DUAL HORN RELAY EMERGENCY FLASHER RELAY EMERGENCY FLASHER SWITCH RELAY FUEL PUMP RELAY HOT W/ LOAD REDUCTION RELAY ENERGIZED HOT W/ LOAD REDUCTION RELAY ENERGIZED HOT AT ALL TIMES HOT W/LOAD REDUCTION RELAY ENERGIZED LOAD REDUCTION RELAY PARK/ NEUTRAL POSITION RELAY PARK/NEUTRAL POSITION RELAY SECOND SPEED COOLANT FAN CONTROL RELAY, COOLANT FAN CONTROL RELAY SECONDARY INJECTION PUMP RELAY STARTER INTERLOCK ALARM SYSTEM RELAY WASHER/ WIPER INTERMITTENT RELAY WASHER/WIPER INTERMITTENT RELAY WIPER/WASHER INTERMITTENT RELAY

ABS HYDRAULIC UNIT, LEFT FRONT BRAKE PAD WEAR SENSOR CHARGE AIR PRESSURE SENSOR DRIVER'S SEAT TEMPER- ATURE SENSOR ENGINE COOLANT TEMPERATURE SENSOR FUEL LEVEL SENSOR LEFT FRONT ABS WHEEL SPEED SENSOR LEFT FRONT BRAKE PAD WEAR SENSOR LEFT REAR ABS WHEEL SPEED SENSOR LEFT REAR BROKEN GLASS SENSOR LEFT ULTRA- SOUND SENSOR OIL LEVEL THERMAL SENSOR PASSENGER'S SEAT BELT TENSIONER IGNITER DRIVER'S SIDE AIR BAG CRASH SENSOR PASSENGER'S SEAT TEMPER- ATURE SENSOR RIGHT FRONT ABS WHEEL SPEED SENSOR RIGHT FRONT BRAKE PAD WEAR SENSOR RIGHT REAR ABS WHEEL SPEED SENSOR RIGHT REAR BROKEN GLASS SENSOR RIGHT ULTRA- SOUND SENSOR TRANSMISSION FLUID TEMPERATURE SENSOR TRANSMISSION INPUT SPEED SENSOR TRANSMISSION VEHICLE SPEED SENSOR VEHICLE SPEED SENSOR

LEFT FRONT MIDRANGE SPEAKER LEFT FRONT SPEAKER LEFT FRONT WOOFER, MIDRANGE SPEAKER LEFT REAR MIDRANGE SPEAKER LEFT REAR WOOFER, MIDRANGE SPEAKER RIGHT FRONT MIDRANGE SPEAKER RIGHT FRONT SPEAKER RIGHT FRONT WOOFER, MIDRANGE SPEAKER RIGHT REAR MIDRANGE SPEAKER RIGHT REAR WOOFER, MIDRANGE SPEAKER

ANTI-SLIP CONTROL SWITCH BACK-UP LIGHT SWITCH BOARD COMPUTER FUNCTION SELECTOR SWITCH BRAKE FLUID LEVEL WARNING SWITCH BRAKE LIGHT SWITCH CRUISE CONTROL SWITCH DOOR LOCK SWITCH DRIVER'S DOOR CONTACT SWITCH DRIVER'S DOOR HANDLE ALARM SWITCH DRIVER'S SEAT BELT SWITCH DRIVER'S SEAT HEATER REGULATING SWITCH DRIVER'S SEAT SWITCH DRIVER'S SIDE DOOR CONTACT SWITCH EMERGENCY FLASHER SWITCH FRONT FOG LIGHT SWITCH GLOVE COMPT LIGHT MIRROR ADJUSTMENT SWITCH HEADLIGHT DIMMER/ FLASHER SWITCH HEADLIGHT WASHER PUMP, LEFT SEAT BELT SWITCH, DRIVER'S SEAT SWITCH HOOD ALARM SWITCH 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 INTERIOR MONITOR SWITCH KEY SWITCH KEY-IN IGNITION SWITCH LEFT FRONT TRACTION CONTROL SWITCH-OVER VALVE LEFT FRONT WINDOW SWITCH LEFT HEATED DOOR LOCK SWITCH LEFT MAKE-UP MIRROR SWITCH LEFT REAR DOOR CONTACT SWITCH LIGHT SWITCH MIRROR ADJUSTMENT SWITCH MIRROR ADJUSTMENT SWITCH, SEAT HEAT REGULATING SWITCHES MULTI-FUNCTION TRANSMISSION RANGE SWITCH MULTIFUNCTION TRANSMISSION RANGE SWITCH PARK BRAKE SWITCH PASSENGER'S DOOR CONTACT SWITCH PASSENGER'S DOOR HANDLE ALARM SWITCH PASSENGER'S FRONT DOOR CONTACT SWITCH PASSENGER'S SEAT HEATER REGULATING SWITCH PASSENGER'S SIDE DOOR CONTACT SWITCH PASSENGER'S SIDE DOOR CONTACT SWITCH, PASSENGER'S SIDE DOOR HANDLE ALARM SWITCH POWER SEAT SWITCH REAR FOG LIGHT SWITCH REAR WINDOW DEFOGGER SWITCH RIGHT FRONT DOOR WINDOW SWITCH RIGHT FRONT TRACTION CONTROL SWITCH-OVER VALVE RIGHT MAKE-UP MIRROR SWITCH RIGHT REAR DOOR CONTACT SWITCH SUNROOF RAISE/ LOWER SWITCH TRIP COMPUTER FUNCTION SELECT SWITCH TRUNK LID ALARM SWITCH TRUNK LID ALARM SWITCH, LUGGAGE COMPARTMENT LIGHT, INTERIOR MONITOR SWITCH TRUNK LID RELEASE SWITCH TRUNK LOCK ALARM SWITCH TRUNK LOCK ALARM SWITCH, TRUNK LIGHT SWITCH TRUNK LOCK SWITCH (SEDAN, TURN SIGNAL SWITCH WASHER FLUID LEVEL WARNING SWITCH WASHER SWITCH WINDOW LOCKOUT SWITCH WINDSHIELD WIPER INTERMITTENT SWITCH

IDLE AIR CONTROL CUT-OFF VALVE LEFT FRONT ABS INLET VALVE LEFT FRONT ABS OUTLET VALVE LEFT FRONT TRACTION CONTROL OUTLET VALVE LEFT REAR ABS INLET VALVE LEFT REAR ABS OUTLET VALVE RIGHT FRONT ABS INLET VALVE RIGHT FRONT ABS OUTLET VALVE RIGHT FRONT TRACTION CONTROL OUTLET VALVE RIGHT REAR ABS INLET VALVE RIGHT REAR ABS OUTLET VALVE SHIFT LOCK SOLENOID SOLENOID VALVES VALVE BODY

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

1.8L 2.7L/ 2.8L 2.7L/ 2.8L 1.8L 48 49-50 51 52 53 54 55 56-84 85 86 87 88 (OR * - INFORMATION NOT AVAILABLE A/C CONTROL HEAD A/C SYSTEM ABS SYSTEM, TRANSMISSIONS SYSTEM, INSTRUMENT CLUSTER SYSTEM AIR BAG ABS WARNING MIL AIR BAG CTRL MODULE ANTI- THEFT WARN OIL PRESS WARN ANTI-THEFT SYSTEM ASHTRAY LIGHT AUTO CHECK SYSTEM AUTOMATIC DAY/NIGHT MIRROR AUTOMATIC DAY/NIGHT MIRRORS BACK- REST BACK- UP LIGHT BRAKE PAD WEAR IND SEAT BELT IND BRAKE SYSTEM WARN WASHER FLUID LEVEL CENTER I/P VENT ILLUM CHARGING SYSTEM CIGARETTE LIGHTER CIGARETTE LIGHTER LIGHT CIRCUIT BREAKER 37 CIRCUIT BREAKER 43 CIRCUIT BREAKER 44 COMBINATION PROCESSOR COMPUTER DATA LINES SYSTEM COOLANT FAN COOLANT FUEL RESERVE WARN LEVEL/ TEMP WARN CRUISE CONTROL SYSTEM CUP HOLDER ILLUM DEFOGGER SYSTEM DIM INPUT DIM INPUT DIM INPUT DISTRIBUTOR IGNITION CAPACITOR DRIVER SIDE HEATED MIRROR DRIVER'S SEAT BELT TENSIONER IGNITER DRIVER'S SIDE AIR BAG IGNITER DRIVER'S SIDE DOOR WARNING LIGHT DRIVER'S SIDE HEATED MIRROR DRIVER'S SIDE MIRROR DRIVER'S SIDE SIDE AIR BAG IGNITER ECT GAUGE EXCEPT AVANT FORE/ AFT FRONT HEIGHT FRONT INTERIOR LIGHT ASSEMBLY FUEL GAUGE CLOCK FUEL INJECTORS FWD ONLY GEN WARN IND HEAD OFF PARK HEAD PARK HEAD- LIGHT HEAD- LIGHT FOG LIGHT FOG LIGHT HEADLIGHTS SYSTEM HI BEAM HI FTP LO HI HEAD LO HI LO HIGH BEAM IND HIGH MOUNT BRAKE LIGHT HOT AT ALL TIMES HOT AT ALL TIMES MICRO CENTRAL ELECTRIC HOT AT ALL TIMES POWER WINDOW HOT IN HOT IN ON OR START HOT IN RUN OR START HOT IN START OR RUN HOT IN START OR RUN MICRO CENTRAL ELECTRIC HOT IN START, RUN HOT WITH HIGH BEAMS ON IGNITION COILS, DISTRIBUTOR IGNITION CAPACITOR, LEAK DETECTION INSTRUMENT CLUSTER INSTRUMENT CLUSTER COMBINATION PROCESSOR INSTRUMENT CLUSTER GEN IND. INSTRUMENT CLUSTER SYSTEM KEY-IN IGN LEFT DOOR WARNING LIGHT LEFT FOOT- WELL LIGHT LEFT FREQUENCY CROSS- OVER LEFT FREQUENCY CROSSOVER LEFT FRONT PARK/TURN LIGHT LEFT FRONT WOOFER LEFT HEAD/ FOGLIGHT ASSEMBLY LEFT I/P VENT ILLUM LEFT LUGGAGE COMPARTMENT LIGHT LEFT MAKE-UP MIRROR LIGHT LEFT REAR DOOR WARNING LIGHT LEFT REAR MIDRANGE, WOOFER SPEAKERS LEFT REAR SEAT BELT TENSIONER IGNITER LEFT REAR WOOFER LEFT RIGHT TURN IND TURN IND TURN LEFT SIDE TURN SIGNAL LIGHT LEFT TAILLIGHT ASSEMBLY LEFT REAR FOG LIGHT LEFT TURN IND LEFT TURN IND PARK TURN LO HI LUGGAGE COMPARTMENT LIGHT LUGGAGE COMPT LIGHT M/T A/T MICRO CENTRAL ELECTRIC MIRROR POSITION MIRROR SELECT NAVIGATION SYSTEM NOT USED OFF HEAD PARK OFF PARK OIL TEMP GAUGE PANEL DIMMER PARK BRAKE IND PARK LIGHT IND ANTI-THEFT IMOBILIZER IND PARK OFF HOT IN RUN PASSENGER'S SIDE AIR BAG IGNITER 1 PASSENGER'S SIDE DOOR WARNING LIGHT PASSENGER'S SIDE HEATED MIRROR PASSENGER'S SIDE MIRROR PASSENGER'S SIDE SIDE AIR BAG IGNITER POWER WINDOWS SYSTEM PWR ACCEL ACTIVATION FAULT IND PWR ACCEL WARN IND RADIO, RADIO SHIELD REAR HEIGHT REAR INTERIOR LIGHT ASSEMBLY REAR READING/ COURTESY LIGHT REAR WINDOW DEFOGGER RIGHT DOOR WARNING LIGHT RIGHT FOOT- WELL LIGHT RIGHT FREQUENCY CROSS- OVER RIGHT FREQUENCY CROSSOVER RIGHT FRONT PARK/TURN LIGHT RIGHT FRONT PARK/TURN LIGHT INSTRUMENT CLUSTER RIGHT FRONT WOOFER RIGHT HEAD/ FOGLIGHT ASSEMBLY RIGHT I/P VENT ILLUM RIGHT LUGGAGE COMPARTMENT LIGHT RIGHT MAKE-UP MIRROR LIGHT RIGHT REAR DOOR WARNING LIGHT RIGHT REAR SEAT BELT TENSIONER IGNITER RIGHT REAR WOOFER RIGHT REAR WOOFER, MIDRANGE SPEAKERS RIGHT SIDE TURN SIGNAL LIGHT RIGHT TAILLIGHT ASSEMBLY RIGHT TURN IND RIGHT TURN IND TURN TAIL STOP SOLID STATE SOUND SYSTEM STEERING WHEEL) TAIL STOP TAILGATE RELEASE SYSTEMS TO SPARK PLUG TO SPARK PLUGS TRACTION CONT IND TRACTION CONTROL IND TRAILER OPERATION IND TRANSMISSION RANGE SELECTOR LEVER DISPLAY TURN PARK TURN TAIL STOP VOLTS METER W/ ANTI-SLIP CONTROL W/ ANTI-SLIP CONTROL OR QUATTRO W/ ANTI-SLIP CONTROL FWD ONLY W/ ANTI-SLIP CONTROL W/ ANTI-SLIP CONTROL W/ ASC W/ AUTO CHECK SYSTEM W/ AUTO CHECK SYSTEM W/ AUTO CHECK SYSTEM W/O AUTO CHECK SYSTEM W/ CONCERT RADIO W/ SYMPHONY RADIO W/DRL ONLY W/O AUTO CHECK SYSTEM WARNING BUZZER WINDOW MOTORS WIPER/WASHER SYSTEM WITH REMOTE CONTROL