Volkswagen Golf Mk4 (1997-2006) computer data lines system Wiring diagrams

BLK WIRE BLK/BLU WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/GRY WIRE BLU/YEL WIRE BRAKELIGHT SWITCH (ABOVE BRAKE PEDAL) BRN WIRE BRN/BLU WIRE CLUTCH VACUUM VENT VALVE SWITCH (M/T) (ABOVE CLUTCH PEDAL) COMPUTER DATA LINES SYSTEM CRUISE CONTROL SWITCH EARLY PROD 2004 FUSE 13 FUSE 5 FUSE PANEL (BEHIND LEFT SIDE OF DASH) FUSE 43 FUSE PANEL (BEHIND LEFT SIDE OF SIDE) GRN WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE GRY/RED WIRE GRY/WHT WIRE HORNS SYSTEM HOT AT ALL TIMES HOT AT ALL TIMES THIRTEEN- FOLD AUXILIARY RELAY PANEL (UNDER LEFT SIDE OF DASH) HOT IN ON OR START LATE PROD 2004, 2005 MULTI-FUNCTION STEERING WHEEL CONTROL MODULE NCA WIRE ORG/BRN WIRE ORG/GRN WIRE RED WIRE RED/BLK WIRE RED/YEL WIRE SOUND SYSTEM THIRTEEN-FOLD AUXILIARY RELAY PANEL (UNDER LEFT SIDE OF DASH) VIO WIRE VIO/RED WIRE W/ STEERING WHEEL CONTROLS WHT WIRE WHT/BLU WIRE WHT/RED WIRE WHT/YEL WIRE YEL WIRE YEL/GRN WIRE YEL/RED WIRE

BLK WIRE BLK/BLU WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/GRY WIRE BRAKELIGHT SWITCH (ABOVE BRAKE PEDAL) BRN WIRE BRN/BLU WIRE BRN/WHT WIRE CLUTCH VACUUM VENT VALVE SWITCH (M/T) (ABOVE CLUTCH PEDAL) COMPUTER DATA LINES SYSTEM CRUISE CONTROL SWITCH DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) FUSE 13 FUSE 5 FUSE PANEL (BEHIND LEFT SIDE OF DASH) GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE GRY/RED WIRE GRY/WHT WIRE HORNS SYSTEM HOT AT ALL TIMES HOT IN ON OR START MULTIFUNCTION STEERING WHEEL CONTROL MODULE NCA WIRE ORG/BRN WIRE ORG/GRN WIRE RED WIRE RED/BLK WIRE RED/YEL WIRE SOUND SYSTEM THIRTEENFOLD AUXILIARY RELAY PANEL (UNDER LEFT SIDE OF DASH) THROTTLE THROTTLE POSITION SENSOR (2.8L, 3.2L) (ON THROTTLE BODY) THROTTLE VALVE CONTROL MODULE (ON THROTTLE BODY) VIO (OR WHT) WIRE VIO WIRE VIO/BLK (OR BLU/WHT OR VIO/WHT) WIRE VIO/RED (OR VIO/WHT) WIRE VIO/RED WIRE VIO/WHT (OR VIO/BLK) WIRE VIO/YEL (OR BLU/GRY) WIRE W/ STEERING WHEEL CONTROLS WHT (OR WHT/GRY) WIRE WHT WIRE WHT/BLU WIRE WHT/RED WIRE WHT/YEL WIRE YEL WIRE YEL/GRN WIRE YEL/RED WIRE

2004 LATE PROD, 2005 2004 EARLY PROD 4 SPEED 5 SPEED 4-MOTION ABS HYDRAULIC PUMP ABS WARNING IND ASR/ESP CONTROL LAMP BLK WIRE BLK/GRY WIRE BLU WIRE BLU/BRN WIRE BRAKE BOOSTER SENDER 1 BRAKE FLUID LEVEL WARNING SWITCH (INTEGRAL WITH BRAKE FLUID RESERVOIR CAP) BRAKE LIGHT SWITCH (ABOVE BRAKE PEDAL) BRAKE PAD WEAR IND LAMP BRAKE SYSTEM (LEFT FRONT OF ENG COMPT) WARNING IND BRN WIRE BRN/RED WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) DIESEL DIESEL DIRECT FUEL INJECTION ENGINE CONTROL ESP/ANTI- SLIP CONTROL SWITCH FUSE 13 FUSE 15 FUSE 178 FUSE 179 GASOLINE GRN WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT AT ALL TIMES FUSE BRACKET/ BATTERY (BEHIND BATTERY) HOT IN ON OR START FUSE PANEL (BEHIND LEFT SIDE OF DASH) FUSE 9 INSTRUMENT CLUSTER LEFT FRONT ABS WHEEL SPEED SENSOR (ON LEFT FRONT HUB/SPINDLE ASSEMBLY) LEFT FRONT BRAKE PAD WEAR SENSOR LEFT REAR ABS INLET VALVE LEFT REAR ABS OUTLET VALVE LEFT REAR ABS WHEEL SPEED SENSOR (ON LEFT REAR HUB/SPINDLE ASSEMBLY) MODULE (AT BASE OF WINDSHIELD IN CENTER OF PLENUM) MOTRONIC ENGINE CONTROL MODULE (AT BASE OF WINDSHIELD IN CENTER OF PLENUM) ORG/ WIRE ORG/BLK WIRE ORG/BRN WIRE PARKING BRAKE WARNING LIGHT SWITCH RED WIRE RED/BLK WIRE RED/GRN WIRE RED/VIO WIRE RIGHT FRONT ABS WHEEL SPEED SENSOR (ON RIGHT FRONT HUB/SPINDLE ASSEMBLY) RIGHT REAR ABS INLET VALVE RIGHT REAR ABS OUTLET VALVE RIGHT REAR ABS WHEEL SPEED SENSOR (ON RIGHT REAR HUB/SPINDLE ASSEMBLY) STEERING ANGLE SENSOR TRACTION CONTROL PILOT VALVE 1 TRACTION CONTROL PILOT VALVE 2 TRANSMISSION CONTROL MODULE (AT BASE OF VIO WIRE VIO/GRN WIRE VIO/YEL WIRE WHT WIRE WHT/YEL WIRE WINDSHIELD IN RIGHT SIDE OF PLENUM) YEL WIRE YEL/GRN WIRE YEL/VIO WIRE

* - INFORMATION NOT AVAILABLE 2004 LATE PROD, 2005 2004 EARLY PROD 4 SPEED 5 SPEED ABS HYDRAULIC PUMP BLK WIRE BLK/GRY WIRE BLU WIRE BLU/BRN WIRE BRAKE ABS SYSTEM WARNING WARNING IND IND BRAKE FLUID LEVEL WARNING SWITCH (INTEGRAL WITH BRAKE FLUID RESERVOIR CAP) BRAKE LIGHT SWITCH (ABOVE BRAKE PEDAL) BRAKE PAD WEAR IND LAMP BRN WIRE BRN/BLU WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) DIESEL DIESEL DIRECT FUEL INJECTION ENGINE CONTROL ESP/ANTI- SLIP CONTROL SWITCH (W/ ESP/ ANTI-SLIP CONTROL) ESP/ASC CONTROL LAMP FUSE 178 FUSE 179 FUSE 9 FUSE BRACKET/ BATTERY (BEHIND BATTERY) GASOLINE GRN WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT AT ALL TIMES FUSE PANEL (BEHIND LEFT SIDE OF DASH) FUSE 13 IGNITION SWITCH IN RIGHT SIDE OF PLENUM) INSTRUMENT CLUSTER LEFT FRONT ABS WHEEL SPEED SENSOR (ON LEFT FRONT HUB/SPINDLE ASSEMBLE) LEFT FRONT BRAKE PAD WEAR SENSOR LEFT REAR ABS INLET VALVE LEFT REAR ABS OUTLET VALVE LEFT REAR ABS WHEEL SPEED SENSOR (ON LEFT REAR HUB/SPINDLE ASSEMBLY) LOCK MODULE (AT BASE OF WINDSHIELD IN CENTER OF PLENUM) MOTRONIC ENGINE CONTROL MODULE (AT BASE OF WINDSHIELD IN CENTER OF PLENUM) ORG/BLK WIRE ORG/BRN WIRE PARKING BRAKE WARNING LIGHT SWITCH RED WIRE RED/BLK WIRE RED/GRN WIRE RIGHT FRONT ABS WHEEL SPEED SENSOR (ON RIGHT FRONT HUB/SPINDLE ASSEMBLY) RIGHT REAR ABS INLET VALVE RIGHT REAR ABS OUTLET VALVE RIGHT REAR ABS WHEEL SPEED SENSOR (ON RIGHT REAR HUB/SPINDLE ASSEMBLE) TRACTION CONTROL PILOT VALVE 1 TRACTION CONTROL PILOT VALVE 2 TRANSMISSION CONTROL MODULE (AT BASE OF WINDSHIELD WHT WIRE YEL WIRE YEL/GRN WIRE

"ANTI-THEFT" INDICATOR ALARM SYSTEM ANTI- THEFT FUSE BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/GRY WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CENTRAL LOCKING WARNING LIGHT (SAFE) CENTRAL LOCKING, ANTI-THEFT WARNING SYSTEM ANTENNA CENTRAL LOCKING/ ANTI- THEFT FUSE CIRCUIT BREAKER COMFORT SYSTEM CENTRAL CONTROL MODULE (BEHIND LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM DEFOGGER OR MIRRORS SYSTEM DEFOGGERS SYSTEM DOOR LOCKS SYSTEM DRIVER'S SIDE CENTRAL LOCKING LOCK UNIT DRIVER'S SIDE DOOR CONTROL MODULE (IN DRIVER'S DOOR, INTEGRAL WITH WINDOW MOTOR) DRIVER'S SIDE INTERIOR LOCK SWITCH EXTERIOR LIGHTS SYSTEM INSTRUMENT CLUSTER SYSTEM FUSE GRN WIRE GRN/BRN WIRE GRN/RED WIRE GRN/VIO WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/WHT WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT AT ALL TIMES FUSE PANEL (BEHIND LEFT SIDE OF DASH) FUSE INSTRUMENT CLUSTER INSTRUMENT CLUSTER SYSTEM NCA WIRE ORG/ WIRE ORG/BRN WIRE ORG/GRN WIRE POWER TOPS SYSTEM POWER WINDOW CIRCUIT BREAKER (UNDER LEFT SIDE OF DASH) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/BRN WIRE RED/WHT WIRE RED/YEL WIRE TRUNK LOCK ALARM/ CENTRAL LOCKING SWITCH TRUNK, TAILGATE, FUEL DOORS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM INSTRUMENT CLUSTER SYSTEM VIO WIRE VIO/YEL WIRE WHT WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE

AIR BAG SPIRAL SPRING/ RETURN SPRING WITH SLIP RING BLK WIRE BLK/BLU WIRE BLU WIRE BRN WIRE BRN/BLU WIRE COMPUTER DATA LINES SYSTEM DUAL HORN RELAY FUSE 40 FUSE 5 FUSE PANEL FUSE PANEL (BEHIND LEFT SIDE OF DASH) GRN WIRE GRN/WHT WIRE HORN HORN SWITCH HOT AT ALL TIMES HOT IN RUN OR START IGNITION SWITCH LOAD REDUCTION RELAY MULTI-FUNCTION STEERING WHEEL CONTROL MODULE NCA WIRE OFF ORG/BRN WIRE ORG/GRN WIRE RED WIRE STEERING WHEEL CONTROL UNIT THIRTEENFOLD AUXILIARY RELAY PANEL (UNDER LEFT SIDE OF DASH) WHT WIRE YEL WIRE

"ANTI-THEFT" INDICATOR 1.8L, 2.8L A/T 3.2L A/C SYSTEM ABS WARNING AIRBAG MALFUNCTION ANTI-THEFT IMMOBILIZER ANTI-THEFT SYSTEM BLK WIRE BLK/GRN WIRE BLK/VIO WIRE BLK/WHT WIRE BLU WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/WHT WIRE BRAKE PAD WEAR INDICATOR BRAKE SYSTEM WARNING BRN WIRE BRN/BLK WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM CONTROL MODULE WITH INDICATOR UNIT COOLANT TEMP GAUGE CRUISE CONTROL DIGITAL CLOCK DIGITAL DISPLAY ILLUMINATION DOOR AJAR WARNING ELECTRONIC POWER CONTROL ENGINE CONTROLS SYSTEM ENGINE COOLANT LEVEL SENSOR (IN COOLANT FLANGE) ENGINE COOLANT TEMPERATURE SENSOR EXCEPT 1.8L, 2.8L A/T FUEL GAUGE FUEL LEVEL SENSOR (IN TANK) FUSE 10 FUSE 11 FUSE PANEL FUSE 7 (BEHIND LEFT SIDE OF DASH) GENERATOR GENERATOR WARNING GLOW PLUG (1.9L) GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRY WIRE GRY/BLU WIRE GRY/RED WIRE GRY/WHT WIRE HEADLIGHTS SYSTEM HIGH BEAM HOT AT ALL TIMES FUSE 15 HOT IN ON OR START HOT WITH KEY IN IGNITION INSTRUMENT CLUSTER LEFT FRONT BRAKE PAD WEAR SENSOR BRAKE FLUID LEVEL WARNING SWITCH LEFT SEAT BELT SWITCH LEFT TURN LOW COOLANT LEVEL/TEMP WARNING LOW FUEL WARNING LOW WASHER FLUID LEVEL MALFUNCTION INDICATOR LIGHT MULTI- FUNCTION INDICATOR MODE SELECT SWITCH MULTI-FUNCTION INDICATOR MULTI-FUNCTION INDICATOR MEMORY SWITCH ODOMETER DISPLAY OIL LEVEL WARNING OIL PRESSURE SWITCH (ON OIL FILTER FLANGE) OIL PRESSURE WARNING ORG/BLK WIRE ORG/BRN WIRE ORG/GRN WIRE OUTSIDE AIR TEMPERATURE SENSOR (IF EQUIPPED) PARKING BRAKE WARNING LIGHT SWTICH REAR LID AJAR WARNING (2002 EARLY PROD) ESP/ASC CONTROL LAMP RED WIRE RED/BLU WIRE RED/VIO WIRE RIGHT TURN SEATBELT WARNING SPEEDO- METER SPEEDO- METER VEHICLE SPEED SENSOR TACHO- METER THIRTEENFOLD RELAY PANEL (UNDER LEFT SIDE OF DASH) TRANS- MISSION CONTROL MODULE TRANSMISSIONS TURN SIGNAL SWITCH VIO WIRE VIO/BLK WIRE VIO/RED WIRE VIO/WHT WIRE WARNING BUZZER WHT WIRE WINDSHIELD WASHER FLUID LEVEL SENSOR WIPER/ WASHER INTERMITTENT RELAY YEL WIRE YEL/GRN WIRE YEL/RED WIRE

A/C SYSTEM BLK WIRE BLK/RED WIRE BLK/VIO WIRE BLK/WHT WIRE BLU WIRE BLU/RED WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM EARLY PROD 2003 LATE PROD 2003, 2004 EARLY PRODUCTION 2003 FUEL PUMP RELAY FUSE 163 FUSE 29 FUSE 37 FUSE PANEL FUSE/ BRACKET BATTERY GRN WIRE GRN/BRN WIRE GRN/GRY (OR GRN) WIRE GRN/VIO WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/RED WIRE GRY/WHT WIRE HEATED OXYGEN HOT AT ALL TIMES HOT IN RUN OR START IGNITION SWITCH LEAK DETECTION PUMP (IN RIGHT REAR WHEELHOUSE) LOCK MOTRONIC ENGINE CONTROL MODULE (AT BASE OF WINDSHIELD IN CENTER OF PLENUM) NCA WIRE NOT USED NOT USED ORG/BLK WIRE ORG/BRN WIRE OXYGEN POWER SUPPLY RELAY RED WIRE RED/BLK WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/YEL WIRE RELAY PANEL RUN WIRE STARTING/ CHARGING SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM THROTTLE POSITION SENSOR/ ACCEL PEDAL POSITION SENSOR VIO WIRE VIO/GRN WIRE VIO/RED WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE WHT/YEL WIRE YEL/BRN WIRE YEL/GRN WIRE

A/C SYSTEM BLK WIRE BLK/BRN WIRE BLK/RED WIRE BLK/VIO WIRE BLK/WHT WIRE BLU WIRE BLU/GRN WIRE BLU/RED WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM FUEL PUMP RELAY FUSE 163 FUSE 29 FUSE 37 FUSE PANEL FUSE/ BRACKET BATTERY GRN WIRE GRN/BRN WIRE GRN/GRY (OR GRN) WIRE GRN/RED WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/RED WIRE GRY/WHT WIRE HEATED OXYGEN HOT AT ALL TIMES HOT IN RUN OR START IGNITION SWITCH LEAK DETECTION PUMP (IN RIGHT REAR WHEELHOUSE) LOCK MOTRONIC ENGINE CONTROL MODULE (AT BASE OF WINDSHIELD IN CENTER OF PLENUM) NCA WIRE ORG/BLK WIRE ORG/BRN WIRE OXYGEN POWER SUPPLY RELAY RED WIRE RED/BLK WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RELAY PANEL RUN WIRE STARTING/ CHARGING SYSTEM THROTTLE POSITION SENSOR/ ACCEL PEDAL POSITION SENSOR VIO WIRE VIO/GRN WIRE VIO/RED WIRE VIO/WHT WIRE WHT WIRE WHT/BLU WIRE WHT/RED WIRE WHT/YEL WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/RED WIRE

A/C SYSTEM BLK WIRE BLK/RED WIRE BLK/VIO WIRE BLK/WHT WIRE BLU WIRE BLU/GRN WIRE BLU/RED WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM FUEL PUMP RELAY FUSE 163 FUSE 29 (BEHIND LEFT SIDE OF DASH) FUSE 37 FUSE PANEL FUSE/ BRACKET BATTERY GRN WIRE GRN/BRN WIRE GRN/GRY (OR GRN) WIRE GRN/VIO WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/RED WIRE GRY/WHT WIRE HEATED OXYGEN HOT AT ALL TIMES HOT IN RUN OR START IGNITION SWITCH LEAK DETECTION PUMP (IN RIGHT REAR WHEELWELL) LOCK MASS AIRFLOW (MAF) SENSOR (IN INTAKE AIR DUCT) MOTRONIC ENGINE CONTROL MODULE (AT BASE OF WINDSHIELD IN CENTER OF PLENUM) MOTRONIC ENGINE CONTROL MODULE POWER SUPPLY RELAY (BEHIND AIR CLEANER HOUSING) NCA WIRE ORG/BLK WIRE ORG/BRN WIRE OXYGEN RED WIRE RED/BLK WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/YEL WIRE RELAY PANEL RUN WIRE STARTING/ CHARGING SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM THROTTLE POSITION SENSOR/ ACCEL PEDAL POSITION SENSOR VIO WIRE VIO/BLK WIRE VIO/GRN WIRE VIO/RED WIRE VIO/WHT WIRE WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE WHT/YEL WIRE YEL/BRN (OR YEL/GRN) WIRE YEL/BRN WIRE YEL/GRN WIRE