Wiring diagrams for Audi A4 B5 (1994-1999)

Automatic a/c circuit

Anti-lock brakes circuit, fwd Anti-lock brakes circuit, quattro

Anti-theft & central locking circuit

Computer data lines circuit

Cooling fan circuit

Cruise control circuit

Defoggers circuit, with antenna amplifier Defoggers circuit, without antenna amplifier

Wiring diagram engine performance 1.8l

Wiring diagram engine performance 2.8l

Back-up lamps circuit Exterior lamps circuit, with drl Exterior lamps circuit, without drl

Ground distribution circuit

Headlamps & fog lamps circuit, with drl Headlamps & fog lamps circuit, without drl

Horn circuit

Instrument cluster circuit

Courtesy lamps circuit Instrument illumination circuit

Power distribution circuit

Heated door locks circuit

Power mirrors circuit

Heated seats circuit Left power seat circuit

Sunroof circuit

Power window system wiring diagram (a4 circuit 1 of 2) Power window system wiring diagram (a4 circuit 2 of 2)

Radio circuit

Shift interlock circuit

Charging circuit Starting circuit

Supplemental restraints circuit

A/t circuit

Warning systems circuit

Wiper/washer circuit

1.8L BATTERY ALARM HORN ANTI-LOCK BRAKES SYSTEM COOLANT FAN CONTROL SERIES RESISTOR D+ GENERATOR GENERATOR 2.8L GENERATOR TERMINAL D+ GENERATOR, INSTRUMENT CLUSTER HIGH NOTE HORN IGNITION COIL 2 IGNITION COIL 1 IGNITION COIL 3 LEFT DOOR LOCK HEATER LOW NOTE HORN PROTECTION DIODE RADIO, AMPLIFIER SHIELD STARTER GENERATOR STARTER INTERLOCK STARTER TERMINAL 50 WASHER NOZZLE HEATERS

DRIVER SEAT BACKREST ADJUSTING MOTOR DRIVER SEAT FORE/AFT ADJUSTING MOTOR DRIVER SEAT FRONT HEIGHT ADJUSTING MOTOR DRIVER SEAT REAR HEIGHT ADJUSTING MOTOR LEFT REAR DOOR WINDOW MOTOR LEFT WINDOW MOTOR RIGHT REAR DOOR WINDOW MOTOR RIGHT WINDOW MOTOR SECONDARY AIR INJECTION PUMP MOTOR SUNROOF MOTOR WINDOW MOTOR WINDSHIELD WIPER MOTOR

ANTENNA AMPLIFIER ANTENNA AMPLIFIER, REAR WINDOW DEFOGGER REAR WINDOW DEFOGGER W/ WINDOW ANTENNA

HORN BUTTON RESET BUTTON SUNROOF REGULATOR WASTEGATE BYPASS REGULATOR VALVE

DATA LINK CONNECTOR

ABS CONTROL MODULE AIRBAG CONTROL MODULE CENTRAL LOCKING/ ALARM SYSTEM/ INTERIOR LIGHT DELAY CONTROL MODULE CRUISE CONTROL MODULE ENGINE CONTROL MODULE INSTRUMENT CLUSTER, SELECTOR LEVER LIGHT RELAY, TRANSMISSION CONTROL MODULE LEFT HEATED DOOR LOCK CONTROL MODULE MFI ENGINE CONTROL MODULE MINI CHECK SYSTEM CONTROL MODULE MOTRONIC ENGINE CONTROL MODULE POWER SUNROOF CONTROL MODULE REAR LAMP CONTROL MODULE TRANSMISSION CONTROL MODULE ULTRA SOUND SENSORS CONTROL MODULE

ABS HYDRAULIC UNIT

FUSE 1 FUSE 2 FUSE 3 FUSE 5 FUSE 5 FUSE 31 FUSE 32 FUSE 7 FUSE 6 FUSE 7 FUSE 9 FUSE 12 FUSE 13 FUSE 13 FUSE 41 FUSE 14 FUSE 15 FUSE 15 FUSE 38 FUSE 16 FUSE 17 FUSE 17 FUSE 44 FUSE 24 FUSE 25 FUSE 26 FUSE 28 FUSE 28 FUSE 29 FUSE 8 FUSE 29 FUSE 33 FUSE 16 FUSE 30 FUSE 34 FUSE 34 FUSE 37 FUSE 39 FUSE 40 FUSE 41 FUSE 42 FUSE 42 FUSE 51 FUSE 51 FUSE 51 FUSE 42 FUSE 53 FUSE 230 FUSE 231 FUSE 237 FUSE 240 FUSE 244 FUSE FUSE FUSE FUSE 13 FUSE HOLDER FUSE PANEL FUSE PANEL FUSE FUSE PANEL FUSE 32 FUSE PANEL FUSE FUSE HOT AT ALL TIMES FUSE 15 HOT IN ON OR START FUSE 5 FUSE 32 HOT IN RUN FUSE 5 POWER WINDOW FUSE 37

HEADLIGHT SYSTEM HEADLIGHT WASHER PUMP

SEAT HEATER REGULATING SWITCHES

ANTI-SLIP CONTROL SWITCH, TRACTION CONTROL INDICATOR LIGHT BRAKE LIGHT SWITCH TRACTION CONTROL INDICATOR LIGHT

HIGH- MOUNT BRAKE LIGHTS RIGHT TAILLIGHT ASSEMBLY LEFT TURN LIGHTS LICENSE PLATE LIGHTS POWER WINDOWS SYSTEM INTERIOR LIGHTS SYSTEM RIGHT TURN LIGHTS

ABS RETURN FLOW PUMP CRUISE CONTROL VACUUM PUMP FUEL PUMP FUEL PUMP RADIO WINDSHIELD WASHER PUMP

3-WAY RELAY CARRIER 13-WAY RELAY CARRIER 13-WAY RELAY CARRIER FUSE 130 ABS RETURN FLOW PUMP RELAY ABS SOLENOID VALVE RELAY COOLANT FAN CONTROL RELAY DAYTIME RUNNING LIGHTS SWITCH-ON RELAY DUAL HORN RELAY EMERGENCY FLASHER RELAY/ SWITCH FRESH AIR BLOWER, A/C CLUTCH RELAY, A/C REFRIGERANT SWITCH FUEL PUMP RELAY FUSE/ RELAY PANEL FUSE/RELAY FUSE PANEL HEADLIGHT WASHER SYSTEM RELAY HOT W/ LOAD REDUCTION RELAY ENERGIZED LOAD REDUCTION RELAY PARK/ NEUTRAL POSITION RELAY RELAY CARRIER SECOND SPEED COOLANT FAN CONTROL RELAY SECOND SPEED COOLANT FAN CONTROL RELAY, COOLANT FAN CONTROL RELAY SELECTOR LEVER LIGHT RELAY WASHER/ WIPER INTERMITTENT RELAY WIPER/ WASHER INTER- MITTENT RELAY

A/C COMPRESSOR SPEED SENSOR BACK PRESSURE FLAP MOTOR AND SENSOR BAROMETRIC PRESSURE SENSOR CAMSHAFT POSITION SENSOR CAMSHAFT POSITION SENSOR 1 CAMSHAFT POSITION SENSOR 2 CENTRAL FLAP MOTOR AND SENSOR DRIVER SEAT TEMPER- ATURE SENSOR DRIVER SEAT HEAT ELEMENT ENGINE OIL TEMP SENSOR FOOTWELL/DEFROSTER FLAP MOTOR AND SENSOR FRESH AIR INTAKE DUCT TEMPERATURE SENSOR FUEL LEVEL SENSOR IGNITION COILS, ENGINE CONTROL MODULE, MASS AIR FLOW SENSOR INTERIOR TEMPERATURE FAN, SENSOR LEFT FRONT WHEEL SENSOR LEFT REAR WHEEL SENSOR LEFT ULTRA- SOUND SENSOR PASSENGER SEAT TEMPER- ATURE SENSOR RIGHT FRONT WHEEL SENSOR RIGHT REAR WHEEL SENSOR RIGHT ULTRA- SOUND SENSOR SPARK PLUGS 3, 5 TEMPERATURE SENSOR II SUNLIGHT PHOTO SENSOR TEMPERATURE REGULATOR FLAP MOTOR AND SENSOR TRANSMISSION FLUID TEMPERATURE SENSOR TRANSMISSION INPUT SPEED SENSOR TRANSMISSION VEHICLE SPEED SENSOR ULTRA- SOUND SENSOR CONTROL MODULE VEHICLE SPEED SENSOR

LEFT FRONT SPEAKER LEFT REAR MIDRANGE SPEAKER RIGHT FRONT SPEAKER RIGHT REAR MIDRANGE SPEAKER

A/C REFRIGERANT HIGH PRESSURE SWITCH/COOLANT FAN CONTROL THERMAL SWITCH ANTI-SLIP CONTROL SWITCH BACK-UP LIGHT SWITCH BACK-UP LIGHT SWITCH, AUTOMATIC TRANSMISSION CONSOLE LIGHT BRAKE FLUID LEVEL WARNING SWITCH BRAKE LAMP SWITCH BRAKE LIGHT SWITCH CLUTCH PEDAL POSITION SWITCH CLUTCH VACUUM VENT VALVE SWITCH COOLANT FAN CONTROL SWITCH, COOLANT FAN, A/C HIGH PRESSURE SWITCH COOLANT FAN CONTROL THERMAL SWITCH CRUISE CONTROL BRAKE PEDAL SWITCH CRUISE CONTROL SWITCH DIMMER SWITCH DOOR LOCK SWITCH DRIVER SEAT HEAT REGULATING SWITCH DRIVER SEAT SWITCH DRIVER'S DOOR CONTACT SWITCH DRIVER'S DOOR HANDLE ALARM SWITCH DRIVER'S SEAT BELT SWITCH EMERGENCY FLASHER SWITCH ENGINE COOLANT LEVEL SWITCH ENGINE OIL PRESSURE SWITCH FOG LIGHT SWITCH FRONT FOG LIGHT SWITCH FUNCTION SELECT SWITCH HANDLE ALARM SWITCH HEADLIGHT DIMMER SWITCH HEADLIGHT DIMMER/ FLASHER SWITCH HEADLIGHT SWITCH HOOD ALARM SWITCH IGNITION SWITCH INSTRUMENT PANEL LIGHT DIMMER SWITCH INTERIOR MONITORING SWITCH KEY SWITCH KEY-IN IGNITION SWITCH LEFT FRONT DOOR CONTACT SWITCH LEFT FRONT WINDOW SWITCH LEFT HEATED DOOR LOCK SWITCH LEFT REAR DOOR CONTACT SWITCH LF TRACTION CONTROL SWITCH-OVER VALVES LIGHT SWITCH MIRROR ADJUSTMENT SWITCH MULTI- FUNCTION TRANS- MISSION RANGE SWITCH MULTI-FUNCTION TRANSMISSION RANGE SWITCH OFF HEAD PARK HEAD/PARK LIGHT SWITCH PARKING BRAKE SWITCH PASSENGER ANTI- SLIP CONTROL SWITCH HEATED SEAT ADJUSTER PASSENGER SEAT HEAT REGULATING SWITCH PASSENGER'S DOOR CONTACT SWITCH, PASSENGER'S DOOR HANDLE ALARM SWITCH POWER SEAT SWITCH REAR DEFOGGER SWITCH REAR FOG LIGHT SWITCH REAR FOG LOGHT SWITCH REAR WINDOW DEFOGGER SWITCH REAR WINDOW DEFOGGER SWITCH REAR FOG LIGHT SWITCH RIGHT FRONT DOOR CONTACT SWITCH RIGHT FRONT DOOR WINDOW SWITCH RIGHT REAR DOOR CONTACT SWITCH SHIFT LOCK SOLENOID, CRUISE CONTROL SWITCH TEMPERATURE/ TRANSMISSION RANGE SWITCH, MIRROR ADJUSTMENT MOTORS TRIP COMPUTER CONTROL SWITCH TRUNK LIGHT SWITCH TRUNK LOCK ALARM SWITCH TURN SIGNAL SWITCH WASHER FLUID LEVEL SWITCH WASHER SWITCH WINDOW LOCKOUT SWITCH WINDSHIELD WIPER INTERMITTENT SWITCH WIPER SWITCH

CAMSHAFT ADJUSMENT VALVE 1 CAMSHAFT ADJUSMENT VALVE 2 INTAKE MANIFOLD CHANGEOVER VALVE SHIFT LOCK SOLENOID SOLENOID VALVES VALVE BODY

(OR RED/ WIRE BLK WIRE BLK/ BLU WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/PPL WIRE BLK/RED WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/RED WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/PPL WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE GRN RED/ WIRE GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/PPL 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/WHT WIRE GRY/YEL WIRE NCA WIRE PPL/BLK WIRE PPL/GRY WIRE PPL/RED WIRE PPL/YEL WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/PPL WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RUN WIRE VIO WIRE VIO/BLK WIRE VIO/BLU WIRE VIO/WHT 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/GRY WIRE YEL/RED WIRE YEL/WHT WIRE

1 2 PPL 1.8L 2.8L #1 #2 #3 #4 #1 #2 #3 #4 #5 #6 A/C COMPRESSOR CLUTCH A/C CONTROL A/C CONTROL HEAD A/T CONSOLE LIGHT ABS IND. AIR BAG MALIFUNCTION IND. AIR CONDITIONING SYSTEM AIRBAG CONTROL IND AIRBAG SPIRAL SPRING ALARM IND ANTI-THEFT SYSTEM ANTILOCK BRAKES SYSTEM AUTO CHECK SYSTEM AUTOMATIC TRANSMISSION CONSOLE LIGHT BACK- REST CENTER OUTLET TEMPERATURE SENDER CENTRAL ELECTRIC CENTRAL ELECTRIC PANEL CIGARETTE LIGHTER CIGARETTE LIGHTER LIGHT CIRCUIT BREAKER 37 CIRCUIT BREAKER 43 CIRCUIT BREAKER 44 CONSOLE INST LIGHTING BOOSTER COOLANT FAN CRUISE CONTROL SYSTEM DEFOGGER SYSTEM DIGITAL OUTSIDE AIR TEMPERATURE/ TRANSMISSION RANGE SELECTOR LEVER DISPLAY DIM INPUT DOOR DOOR DRIVER BACKREST HEAT ELEMENT DRIVER HEATED SEAT ADJUSTER DRIVER SIDE HEATED MIRROR DRIVER SIDE MIRROR DRIVER'S SIDE AIRBAG IGNITER DRIVER'S SIDE MIRROR EXTERIOR LAMPS SYSTEM FLOOR OUTLET TEMPERATURE SENDER FOG LIGHT FORE/ AFT FRESH AIR BLOWER FRONT HEIGHT REAR HEIGHT FRONT INTERIOR LIGHT ASSEMBLY FTP LO FUEL GAUGE FUEL INJECTORS GEN IND. GLOVE COMPARTMENT LIGHT GLOVE COMPT LIGHT GROUND DISTRIBUTION HEAD HEAD OFF PARK PARK HEAD OFF PARK HEAD PARK HEAD- LIGHT HEAD- LIGHT FOG LIGHT HEADLIGHTS SYSTEM HI FTP LO HI LO HI-BEAM IND HOT AT ALL TIMES HOT AT ALL TIMES POWER WINDOW HOT IN ACC OR RUN HOT IN ON OR ACC HOT IN ON OR START HOT IN RUN HOT IN RUN OR ACC HOT IN RUN OR START HOT W/ PARK OR HEADLIGHTS ON IGNITION COILS INSTRUMENT CLUSTER INSTRUMENT CLUSTER COMBINATION PROCESSOR INSTRUMENT CLUSTER GEN IND. INSTRUMENT CLUSTER HI BEAM INSTRUMENT CLUSTER SYSTEM IV III KEY-IN IGN LEFT FRONT PARK/ TURN LIGHT LEFT FRONT SIDE TURN LIGHT LEFT HEAD/ FOG LIGHT ASSEMBLY LEFT LUGGAGE COMPARTMENT LIGHT LEFT MAKE-UP MIRROR LIGHT LEFT REAR READING LIGHT LEFT REAR WOOFER LEFT SEAT BELT TENSIONER IGNITER LEFT TAILLIGHT LEFT TAILLIGHT ASSEMBLY LEFT TAILLIGHT ASSEMBLY BACK- UP LIGHT LEFT TURN IND LF TRACTION CONTROL OUTLET VALVES LO HI MIRROR POSITION MIRROR SELECT OFF HEAD HEAD PARK OFF HEAD PARK OFF ON OFF PARK OIL PRESS GAUGE ON IND. OUTSIDE AIR TEMPERATURE PANEL) PARK BRAKE IND PARK TURN PARKING BRAKE IND. PASS. SIDE HEATED MIRROR PASSENGER BACKREST HEAT ELEMENT PASSENGER SEAT HEAT ELEMENT PASSENGER'S DOOR PASSENGER'S SIDE AIRBAG IGNITER PASSENGER'S SIDE MIRROR PL PR POWER OUTPUT STAGE POWER WINDOWS SYSTEM PPL 5 6 PPL 30 31 32 33 RADIO, REAR SPEAKERS FUEL INJECTORS REAR FOG LIGHT REAR FOG LIGHT LO HI REAR WINDOW DEFOGGER RF ABS INLET VALVES RF ABS OUTLET VALVES RIGHT FRONT PARK/ TURN LIGHT RIGHT FRONT SIDE TURN LIGHT RIGHT HEAD/ FOG LIGHT ASSEMBLY RIGHT LUGGAGE COMPARTMENT LIGHT RIGHT MAKE-UP MIRROR LIGHT RIGHT REAR READING LIGHT RIGHT REAR WOOFER RIGHT SEAT BELT TENSIONER IGNITER RIGHT TAILLIGHT ASSEMBLY BACK- UP LIGHT RIGHT TURN IND SOLID STATE SPARK PLUG SPARK PLUG SPARK PLUGS 2, 4 SPARK PLUGS 1, 6 SPEED- OMETER SPEEDO- METER VEHICLE SPEED OUTPUT STOP TAIL STOP TAIL TURN TACH- OMETER TAIL STOP TURN TEMP GAUGE TRANS- MISSIONS SYSTEM TRANSMISSION RANGE SELECTOR LEVER DISPLAY OR AUTO CHECK SYSTEM MODULE TRANSMISSIONS SYSTEM TURN PARK W/ A/T W/ ASC W/ TRACTION CONTROL W/O TRACTION CONTROL WARNING BUZZER WARNINGS SYSTEM WINDOW MOTORS