Volkswagen Jetta IV (1998-2005) computer data lines system Wiring diagrams

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

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 ENGINE CONTROLS SYSTEM 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 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

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

4 SPEED 5 SPEED ABS HYDRAULIC PUMP BLK WIRE BLK/GRY WIRE BLU WIRE BLU/BRN WIRE BRAKE BOOSTER SENSDER 1 BRAKE LIGHT SWITCH (ABOVE BRAKE PEDAL) BRAKE SYSTEM WARNING IND ABS WARNING IND (LEFT FRONT OF ENG COMPT) BRN WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM CONTROL MODULE WITH INDIC- ATOR UNIT DATA BUS ON BOARD DIAGNOSTIC INTERFACE DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) DIESEL DIESEL DIRECT FUEL INJECTION ENGINE CONTROL ESP/ANTI- SLIP CONTROL SWITCH ESP/ASC CONTROL LAMP BRAKE PAD WEAR IND LAMP FUSE 13 FUSE 15 FUSE 178 FUSE 179 FUSE BRACKET/ BATTERY (BEHIND BATTERY) FUSE PANEL (BEHIND LEFT SIDE OF DASH) FUSE 9 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 IN ON OR START INSTRUMENT CLUSTER INSTRUMENT CLUSTERS SYSTEM 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 TRANSFER ACCELERATION/ ROTATION RATE SENSOR 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

* - INFORMATION NOT AVAILABLE 4 SPEED 5 SPEED ABS HYDRAULIC PUMP BLK WIRE BLK/GRY WIRE BLU WIRE BLU/BRN WIRE BRAKE FLUID LEVEL WARNING SWITCH (INTEGRAL WITH BRAKE FLUID RESERVOIR CAP) BRAKE LIGHT SWITCH (ABOVE BRAKE PEDAL) BRAKE SYSTEM WARNING IND ABS WARNING IND BRN WIRE BRN/BLU WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM CONTROL MODULE WITH INDIC- ATOR UNIT DATA BUS ON BOARD DIAGNOSTIC INTERFACE DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) DIESEL DIESEL DIRECT FUEL INJECTION ENGINE CONTROL ESP/ANTI- SLIP CONTROL SWITCH ESP/ASC CONTROL LAMP BRAKE PAD WEAR IND LAMP FUSE 178 FUSE 179 FUSE 9 FUSE BRACKET/ BATTERY (BEHIND BATTERY) FUSE PANEL (BEHIND LEFT SIDE OF DASH) FUSE 13 GASOLINE GRN WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HOT AT ALL TIMES 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 W/ ANTI- SLIP CONTROL ONLY 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

"ANTI-THEFT" INDICATOR ALARM HORN 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 SYSTEM DEFOGGER SYSTEMS DOOR AJAR INDICATOR 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 HOOD ALARM SWITCH HOT AT ALL TIMES HOT AT ALL TIMES FUSE PANEL (BEHIND LEFT SIDE OF DASH) FUSE INSTRUMENT CLUSTER NCA WIRE ORG/BRN WIRE ORG/GRN WIRE POWER TOPS SYSTEM POWER WINDOW CIRCUIT BREAKER (UNDER LEFT SIDE OF DASH) RADIO REAR LID UNLOCK MOTOR RED WIRE RED/BLK WIRE RED/BLU WIRE RED/BRN WIRE RED/WHT WIRE RED/YEL WIRE REMOTE FUEL TANK DOOR SWITCH VIO WIRE VIO/YEL WIRE WHT WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE

A/C SYSTEM A/T A/T M/T ACCELERATOR PEDAL POSITION SENSORS 1, 2 (IN THE PEDAL ASSEMBLY) BLK WIRE BLK/GRN WIRE BLK/RED WIRE BLK/VIO WIRE BLK/WHT WIRE BLU WIRE BLU/GRN WIRE BLU/RED WIRE BLU/VIO WIRE BLU/WHT (OR 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 EVAPORATIVE EMISSION CANISTER PURGE REGULATOR VALVE FUEL PUMP RELAY FUSE 163 FUSE 29 FUSE 31 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 GRY/YEL WIRE HEATED OXYGEN HOT AT ALL TIMES HOT IN RUN OR START IGNITION SWITCH LEAK DETECTION PUMP LOCK MASS AIRFLOW SENSOR 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 TRANSMISSION SYSTEM VIO WIRE VIO/RED WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/RED WIRE WHT/VIO 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