Audi A4 B6 (2000-2006) computer data lines system Wiring diagrams

BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/RED WIRE BLU WIRE BLU/BLK WIRE BRAKE LIGHT SWITCH (ABOVE BRAKE PEDAL, ON BRACKET) BRN WIRE COMPUTER DATA LINES SYSTEM EMERGENCY FLASHER SWITCH FUSE 13 FUSE 14 FUSE 7 FUSE HOLDER (LEFT END OF DASH) GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRY WIRE GRY/BLK WIRE GRY/RED WIRE HIGH MOUNT BRAKE LIGHT HOT AT ALL TIMES HOT AT ALL TIMES FUSE STRIP (MAIN FUSE) FUSE 88 IGNITION/ STARTER SWITCH LEFT HEADLIGHT ASSEMBLY LEFT SIDE TURN SIGNAL LIGHT LEFT TAILLAMP ASSEMBLY LICENSE PLATE LIGHTS LIGHT SWITCH NCA WIRE OFF ORG/ WIRE ORG/BLK WIRE ORG/BRN WIRE ORG/GRN WIRE RED WIRE RED/BLK WIRE RED/WHT WIRE RED/YEL WIRE RIGHT HEADLIGHT ASSEMBLY RIGHT SIDE TURN SIGNAL LIGHT RIGHT TAILLAMP ASSEMBLY RUN WIRE STEERING COLUMN ELECTRONIC SYSTEMS CONTROL MODULE (TOP OF STEERING COLUMN) STOP TAIL STOP TURN TAIL TURN TURN PARK TURN SIGNAL SWITCH VIO WIRE WHT WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE

BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/RED WIRE BLU WIRE BLU/BLK WIRE BRAKE LIGHT SWITCH (ABOVE BRAKE PEDAL, ON BRACKET) BRN WIRE COMPUTER DATA LINES SYSTEM EMERGENCY FLASHER SWITCH FUSE 13 FUSE 14 FUSE 7 FUSE HOLDER (LEFT END OF DASH) GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRY WIRE GRY/BLK WIRE GRY/RED WIRE HEADLIGHTS SYSTEM HIGH MOUNT BRAKE LIGHT HOT AT ALL TIMES HOT AT ALL TIMES FUSE STRIP (MAIN FUSE) FUSE 88 IGNITION/ STARTER SWITCH LEFT HEADLIGHT ASSEMBLY LEFT SIDE TURN SIGNAL LIGHT LEFT TAILLAMP ASSEMBLY LICENSE PLATE LIGHTS LIGHT SWITCH NCA WIRE OFF ORG/ WIRE ORG/BLK WIRE ORG/BRN WIRE ORG/GRN WIRE RED WIRE RED/BLK WIRE RED/WHT WIRE RED/YEL WIRE RIGHT HEADLIGHT ASSEMBLY RIGHT SIDE TURN SIGNAL LIGHT RIGHT TAILLAMP ASSEMBLY RUN WIRE STEERING COLUMN ELECTRONIC SYSTEMS CONTROL MODULE (TOP OF STEERING COLUMN) STOP TAIL STOP TAIL TURN TURN TURN PARK TURN SIGNAL SWITCH VIO WIRE W/ HIGH INTENSITY HEADLIGHTS WHT WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/GRN WIRE

9-PIN RELAY CARRIER (IN INSTRUMENT PANEL) ANTI-LOCK BRAKES SYSTEM BATTERY BLK WIRE BLK/GRN WIRE BLU WIRE BLU/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM FOG LIGHT SWITCH FUSE 10 FUSE 88 FUSE HOLDER (LEFT END OF DASH) FUSE STRIP (MAIN FUSE) GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BRN WIRE GRY/WHT WIRE GRY/YEL WIRE HEADLIGHT RANGE CONTROL MODULE (BEHIND GLOVE BOX) HEADLIGHT SWITCH HIGH INTENSITY GAS DISCHARGE LAMP HOT AT ALL TIMES HOT IN RUN OR START IGNITION SWITCH INSTRUMENT CLUSTER SYSTEM LEFT FRONT FOG LIGHT LEFT HEADLIGHT ASSEMBLY LEFT HEADLIGHT BEAM ADJUSTING MOTOR LEFT HIGH BEAM HEAD- LIGHT HIGH INTENSITY GAS DISCHARGE LAMP LEFT REAR FOG LIGHT LIGHT SWITCH LOAD REDUCTION RELAY NCA WIRE OFF ORG/BLK WIRE ORG/BRN WIRE ORG/GRN WIRE RED WIRE RIGHT FRONT FOG LIGHT RIGHT HEADLIGHT ASSEMBLY RIGHT HEADLIGHT BEAM ADJUSTING MOTOR RIGHT HIGH BEAM HEAD- LIGHT RUN WIRE STARTING/ CHARGING SYSTEM STEERING COLUMN ELECTRONIC SYSTEMS CONTROL MODULE (TOP OF STEERING COLUMN) TRANSMISSIONS SYSTEM TURN SIGNAL SWITCH (HEADLIGHT DIMMER SWITCH) VEHICLE ELECTRICAL SYSTEM CONTROL MODULE (BEHIND LEFT SIDE OF DASH) VIO WIRE VIO/BRN WIRE VIO/RED WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/VIO WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE YEL/BRN WIRE YEL/WHT WIRE

9-PIN RELAY CARRIER (IN INSTRUMENT PANEL) BATTERY BLK WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM FOG LIGHT SWITCH FUSE STRIP (MAIN FUSE) FUSE 88 GRN WIRE GRY WIRE GRY/WHT WIRE HEADLIGHT SWITCH HOT AT ALL TIMES IGNITION SWITCH LEFT FRONT FOG LIGHT LEFT HEADLIGHT ASSEMBLY LEFT REAR FOG LIGHT LIGHT SWITCH LOAD REDUCTION RELAY NCA WIRE OFF ORG/BLK WIRE ORG/BRN WIRE ORG/GRN WIRE RED WIRE RIGHT FRONT FOG LIGHT RIGHT HEADLIGHT ASSEMBLY RUN WIRE STEERING COLUMN ELECTRONIC SYSTEMS CONTROL MODULE (TOP OF STEERING COLUMN) TURN SIGNAL SWITCH (HEADLIGHT DIMMER SWITCH) VEHICLE ELECTRICAL SYSTEM CONTROL MODULE (BEHIND LEFT SIDE OF DASH) VIO WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE YEL/WHT WIRE

9-PIN RELAY CARRIER (IN INSTRUMENT PANEL) ANTI-LOCK BRAKES SYSTEM BATTERY BLK WIRE BLK/GRN WIRE BLU WIRE BLU/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM FOG LIGHT SWITCH FUSE 10 FUSE 88 FUSE HOLDER (LEFT END OF DASH) FUSE STRIP (MAIN FUSE) GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BRN WIRE GRY/WHT WIRE GRY/YEL WIRE HEADLIGHT RANGE CONTROL MODULE (BEHIND GLOVE BOX) HEADLIGHT SWITCH HIGH INTENSITY GAS DISCHARGE LAMP HOT AT ALL TIMES HOT IN RUN OR START IGNITION SWITCH INSTRUMENT CLUSTER SYSTEM LEFT FRONT FOG LIGHT LEFT HEADLIGHT ASSEMBLY LEFT HEADLIGHT BEAM ADJUSTING MOTOR LEFT HIGH BEAM HEAD- LIGHT HIGH INTENSITY GAS DISCHARGE LAMP LEFT REAR FOG LIGHT LIGHT SWITCH LOAD REDUCTION RELAY NCA WIRE OFF ORG/BLK WIRE ORG/BRN WIRE ORG/GRN WIRE RED WIRE RIGHT FRONT FOG LIGHT RIGHT HEADLIGHT ASSEMBLY RIGHT HEADLIGHT BEAM ADJUSTING MOTOR RIGHT HIGH BEAM HEAD- LIGHT RUN WIRE STARTING/ CHARGING SYSTEM STEERING COLUMN ELECTRONIC SYSTEMS CONTROL MODULE (TOP OF STEERING COLUMN) TRANSMISSIONS SYSTEM TURN SIGNAL SWITCH (HEADLIGHT DIMMER SWITCH) VEHICLE ELECTRICAL SYSTEM CONTROL MODULE (BEHIND LEFT SIDE OF DASH) VIO WIRE VIO/BRN WIRE VIO/RED WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/VIO WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE YEL/BRN WIRE YEL/WHT WIRE

9-PIN RELAY CARRIER (IN INSTRUMENT PANEL) ANTI-LOCK BRAKES SYSTEM BATTERY BLK WIRE BLK/GRN WIRE BLU WIRE BLU/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM FOG LIGHT SWITCH FUSE 10 FUSE 20 FUSE 21 FUSE 88 FUSE HOLDER (LEFT END OF DASH) FUSE STRIP (MAIN FUSE) GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BRN WIRE GRY/WHT WIRE GRY/YEL WIRE HEADLIGHT RANGE CONTROL MODULE (BEHIND GLOVE BOX) HEADLIGHT SWITCH HIGH INTENSITY GAS DISCHARGE LAMP HOT AT ALL TIMES HOT IN RUN OR START IGNITION SWITCH INSTRUMENT CLUSTER SYSTEM LEFT FRONT FOG LIGHT LEFT HEADLIGHT ASSEMBLY LEFT HEADLIGHT BEAM ADJUSTING MOTOR LEFT HIGH BEAM HEAD- LIGHT HIGH INTENSITY GAS DISCHARGE LAMP LEFT REAR FOG LIGHT LIGHT SWITCH LOAD REDUCTION RELAY NCA WIRE OFF ORG/BLK WIRE ORG/BRN WIRE ORG/GRN WIRE RED WIRE RIGHT FRONT FOG LIGHT RIGHT HEADLIGHT ASSEMBLY RIGHT HEADLIGHT BEAM ADJUSTING MOTOR RIGHT HIGH BEAM HEAD- LIGHT RUN WIRE STARTING/ CHARGING SYSTEM STEERING COLUMN ELECTRONIC SYSTEMS CONTROL MODULE (TOP OF STEERING COLUMN) TRANSMISSIONS SYSTEM TURN SIGNAL SWITCH (HEADLIGHT DIMMER SWITCH) VEHICLE ELECTRICAL SYSTEM CONTROL MODULE (BEHIND LEFT SIDE OF DASH) VIO WIRE VIO/BRN WIRE VIO/RED WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/VIO WIRE WHT/YEL WIRE YEL WIRE YEL/BRN WIRE

9-PIN RELAY CARRIER (IN INSTRUMENT PANEL) BATTERY BLK WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM FOG LIGHT SWITCH FUSE STRIP (MAIN FUSE) FUSE 88 GRN WIRE GRY WIRE GRY/WHT WIRE HEADLIGHT SWITCH HOT AT ALL TIMES IGNITION SWITCH LEFT FRONT FOG LIGHT LEFT HEADLIGHT ASSEMBLY LEFT REAR FOG LIGHT LIGHT SWITCH LOAD REDUCTION RELAY NCA WIRE OFF ORG/BLK WIRE ORG/BRN WIRE ORG/GRN WIRE RED WIRE RIGHT FRONT FOG LIGHT RIGHT HEADLIGHT ASSEMBLY RUN WIRE STEERING COLUMN ELECTRONIC SYSTEMS CONTROL MODULE (TOP OF STEERING COLUMN) TURN SIGNAL SWITCH (HEADLIGHT DIMMER SWITCH) VEHICLE ELECTRICAL SYSTEM CONTROL MODULE (BEHIND LEFT SIDE OF DASH) VIO WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE YEL/WHT WIRE

BLK WIRE BRN WIRE COMPUTER DATA LINES SYSTEM FUSE 40 FUSE HOLDER (LEFT END OF DASH) GRN WIRE GRN/YEL WIRE HIGH TONE HORN HORN RELAY (9-PIN RELAY CARRIER) HORN SWITCH HOT AT ALL TIMES LOW TONE HORN NCA WIRE ORG/BRN WIRE ORG/GRN WIRE RED WIRE RED/YEL WIRE STEERING COLUMN ELECTRONIC SYSTEMS CONTROL MODULE (IN TOP OF STEERING COLUMN) TELEPHONE/TELEMATIC CONTROL MODULE (NEAR BASE OF RIGHT FRONT SEAT) VEHICLE ELECTRICAL SYSTEM CONTROL MODULE (BEHIND LEFT SIDE OF DASH) WHT WIRE YEL WIRE

1 3 RADIO FREQUENCY CONTROLLED CLOCK RECEIVER (IF EQUIPPED) ABS CONTROL MODULE (ON LEFT SIDE OF ENGINE COMPARTMENT) AIR BAG MIL AIRBAG CONTROL MODULE (BELOW CENTER CONSOLE) AMBIENT TEMPERATURE SWITCH (BEHIND LOWER LEFT CENTER OF FRONT BUMPER) ANTI-LOCK BRAKES SYSTEM ANTI-LOCK BRAKES SYSTEM COMPUTER DATA LINES SYSTEM ANTI-THEFT IMMOBILZER INDUCTION COIL ANTI-THEFT SYSTEM BLK WIRE BLK/RED WIRE BLU WIRE BLU/BRN WIRE BLU/WHT WIRE BLU/YEL WIRE BOARD COMPUTER FUNCTION SELECTOR SWITCH II BRAKE FLUID LEVEL WARNING SWITCH (ON BRAKE FLUID RESERVOIR) BRN WIRE BRN/GRN WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE BUZZER CLOCK COMPUTER DATA LINES SYSTEM CONTROL MODULE FOR NAVIGATION W/ CD- MECHANISM DRIVER'S SEAT CONTACT STRIP ECT GAUGE ENGINE COOLANT LEVEL (ECL) WARNING SWITCH ENGINE COOLANT TEMPERATURE (ECT) SENSOR FUEL GAUGE FUEL GAUGE GAUGE SENDER FUEL LEVEL SENSOR 2 (QUATTRO ONLY) FUEL TANK LOCK SWITCH (IF EQUIPPED) FUSE 15 FUSE 5 FUSE HOLDER (LEFT END OF DASH) GEN WARN IND GRN WIRE GRN/GRY WIRE GRN/RED WIRE GRN/VIO WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/YEL WIRE HEADLIGHT RANGE CONTROL MODULE (BEHIND GLOVE BOX) HOT AT ALL TIMES HOT IN RUN OR START IGNITION SWITCH INSTRUMENT CLUSTER KEY SWITCH OFF OIL LEVEL THERMAL SENSOR OIL PRESSURE SWITCH ORG/ WIRE ORG/BLK WIRE ORG/BRN WIRE ORG/GRN WIRE ORG/VIO WIRE RADIO RED WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RUN WIRE SPEEDO- METER STARTING/CHARGING SYSTEM STEERING COLUMN ELECTRONIC SYSTEMS CONTROL MODULE (IN TOP OF STEERING COLUMN) SUPPLEMENTAL RESTRAINTS SYSTEM TACHO- METER TELEPHONE/ TELEMATIC CONTROL MODULE TIPTRONIC SWITCH TRANSMISSION CONTROL MODULE (LEFT REAR OF ENG COMPT) (W/O CVT) VIO WIRE VIO/BLK WIRE WARNINGS SYSTEM WHT WIRE WHT/BRN WIRE WHT/GRY WIRE WHT/YEL WIRE WINDSHIELD WASHER FLUID LEVEL WARNING SWITCH YEL WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/GRY WIRE YEL/WHT WIRE

1 3 RADIO FREQUENCY CONTROLLED CLOCK RECEIVER (IF EQUIPPED) ABS CONTROL MODULE (ON LEFT SIDE OF ENGINE COMPARTMENT) AIR BAG MIL AIRBAG CONTROL MODULE (BELOW CENTER CONSOLE) AMBIENT TEMPERATURE SWITCH (BEHIND LOWER LEFT CENTER OF FRONT BUMPER) ANTI-LOCK BRAKES SYSTEM ANTI-LOCK BRAKES SYSTEM COMPUTER DATA LINES SYSTEM ANTI-THEFT IMMOBILZER INDUCTION COIL ANTI-THEFT SYSTEM BLK WIRE BLK/RED WIRE BLU WIRE BLU/BRN WIRE BLU/WHT WIRE BLU/YEL WIRE BOARD COMPUTER FUNCTION SELECTOR SWITCH II BRAKE FLUID LEVEL WARNING SWITCH (ON BRAKE FLUID RESERVOIR) BRN WIRE BRN/GRN WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE BUZZER CLOCK COMPUTER DATA LINES SYSTEM CONTROL MODULE FOR NAVIGATION W/ CD- MECHANISM ECT GAUGE ENGINE COOLANT LEVEL (ECL) WARNING SWITCH ENGINE COOLANT TEMPERATURE (ECT) SENSOR FUEL GAUGE FUEL GAUGE GAUGE SENDER FUEL LEVEL SENSOR 2 (QUATTRO ONLY) FUSE 15 FUSE 5 FUSE HOLDER (LEFT END OF DASH) GEN WARN IND GRN WIRE GRN/GRY WIRE GRN/RED WIRE GRN/VIO WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/RED WIRE GRY/YEL WIRE HEADLIGHT RANGE CONTROL MODULE (BEHIND GLOVE BOX) HOT AT ALL TIMES HOT IN RUN OR START IGNITION SWITCH INSTRUMENT CLUSTER KEY SWITCH LEFT FRONT SEAT BELT MICRO SWITCH OFF OIL LEVEL THERMAL SENSOR OIL PRESSURE SWITCH ORG/ WIRE ORG/BLK WIRE ORG/BRN WIRE ORG/GRN WIRE ORG/VIO WIRE RADIO RED WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RUN WIRE SERVOTRONIC CONTROL MODULE (ON 9-PIN RELAY CARRIER) SPEEDO- METER STARTING/CHARGING SYSTEM STEERING COLUMN ELECTRONIC SYSTEMS CONTROL MODULE (IN TOP OF STEERING COLUMN) SUPPLEMENTAL RESTRAINTS SYSTEM TACHO- METER TELEPHONE CONTROL MODULE FOR OPERATING ELECTRONICS TELEPHONE/ TELEMATIC CONTROL MODULE TIPTRONIC SWITCH TRANSMISSION CONTROL MODULE (LEFT REAR OF ENG COMPT) (W/O CVT) VIO WIRE VIO/BLK WIRE WARNINGS SYSTEM WHT WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRY WIRE WHT/YEL WIRE WINDSHIELD WASHER FLUID LEVEL WARNING SWITCH YEL WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/GRY WIRE YEL/WHT WIRE