Volkswagen Jetta IV (1998-2005) (center of firewall) Wiring diagrams

BLK WIRE BLK/BRN WIRE BLK/VIO WIRE BLK/YEL WIRE BLU WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/WHT WIRE BRAKE LIGHT SWITCH BRN WIRE BRN/BLU WIRE BRN/YEL WIRE CAMSHAFT ADJUSTMENT VALVE 1 CAMSHAFT POSITION SENSOR CHARGE AIR PRESSURE SENSOR CLUTCH VACUUM VENT VALVE SWITCH CRUISE CONTROL SYSTEM ENGINE COOLANT TEMPERATURE SENSOR FUEL INJECTORS FUSE 13 FUSE 5 FUSE PANEL (BEHIND LEFT SIDE OF DASH) GRN WIRE GRN/BRN WIRE GRN/RED WIRE GRN/VIO WIRE GRN/WHT WIRE GRY WIRE GRY/GRN WIRE GRY/RED WIRE GRY/WHT WIRE GRY/YEL WIRE HOT AT ALL TIMES IGNITION COILS INTAKE AIR TEMPERATURE NCA WIRE NOT USED RED WIRE RED/BLK WIRE RED/VIO WIRE THROTTLE VALVE CONTROL MODULE TO SPARK PLUG TURBOCHARGER RECIRCULATING VALVE VIO WIRE VIO/BLK WIRE VIO/BLU WIRE VIO/GRN WIRE VIO/GRY WIRE VIO/RED WIRE VIO/WHT WIRE VIO/YEL WIRE WASTEGATE BYPASS REGU- LATOR VALVE WHT WIRE WHT/GRY WIRE WHT/RED WIRE YEL/BLK WIRE YEL/GRN WIRE

A/C SYSTEM BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/VIO WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN/BLU WIRE BRN/RED WIRE BRN/WHT WIRE COOLING FANS SYSTEM CRUISE CONTROL SYSTEM EGR VACUUM REGULATOR SOLENOID VALVE (ON CENTER OF FIREWALL) FUSE 176 FUSE 29 FUSE 32 FUSE 43 FUSE BRACKET FUSE PANEL FUSE PANEL FUSE 34 GENERATOR GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRN/RED WIRE GRN/VIO WIRE GRN/WHT WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/RED WIRE GRY/VIO WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT IN RUN OR START MASS AIRFLOW (MAF) SENSOR (RIGHT SIDE OF AIR CLEANER HOUSING) ORG/BLK WIRE ORG/BRN WIRE POWER SUPPLY RELAY (ON THIRTEENFOLD AUXILIARY RELAY PANEL) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/VIO WIRE RELAY PANEL TRANSMISSIONS SYSTEM VIO/RED WIRE WHT WIRE WHT/BLU WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/RED WIRE

BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/RED WIRE BLU/BLK WIRE BLU/WHT WIRE BLU/YEL WIRE BRAKELIGHT SWITCH/ BRAKE VACUUM VENT VALVE SWITCH (ABOVE BRAKE PEDAL) BRN WIRE BRN/RED WIRE CLUTCH VACUUM VENT VALVE SWITCH (W/M/T) (ABOVE CLUTCH PEDAL) COOLANT GLOW PLUGS (M/T ONLY) ENGINE GLOW PLUGS FUSE 13 FUSE 162 FUSE 163 FUSE BRACKET FUSE PANEL GLOW PLUG TRIGGER CONTROL MODULE GRN/BLK WIRE GRN/BRN WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/WHT WIRE HOT AT ALL TIMES INTAKE MANIFOLD FLAP CHANGEOVER VALVE (ON INTAKE MANIFOLD) ORG/BLK WIRE ORG/BRN WIRE RED WIRE RED/BLK WIRE RED/BRN WIRE RED/VIO WIRE VIO/GRY WIRE WHT/BLU WIRE WHT/RED WIRE WHT/YEL WIRE YEL/BLK 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

BLK WIRE BLK/VIO WIRE BLU WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/YEL WIRE BRAKE LIGHT SWITCH (ABOVE BRAKE PEDAL) BRN WIRE BRN/BLU WIRE CAMSHAFT POSITION SENSOR (BEHIND CAMSHAFT SPROCKET) CLUTCH VACUUM VENT VALVE SWITCH (ABOVE CLUTCH PEDAL) CRUISE CONTROL SYSTEM FUEL INJECTORS FUSE 13 FUSE 5 FUSE FOR VALVE CAMSHAFT ADJUSTMENT FUSE PANEL (BEHIND LEFT SIDE OF DASH) GRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/RED WIRE GRY/WHT WIRE HOT AT ALL TIMES MOTRONIC ENGINE CONTROL MODULE (AT BASE OF WINDSHIELD IN CENTER OF PLENUM) NCA WIRE RED WIRE RED/BLK WIRE RED/VIO WIRE TEMPERATURE SENSOR 1 FOR CATALYST THROTTLE VALVE CONTROL MODULE (ON THROTTLE BODY) TO SPARK PLUG VALVE 1 FOR CAMSHAFT ADJUSTMENT VIO WIRE VIO/BLU WIRE VIO/GRN WIRE VIO/RED WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/RED WIRE YEL WIRE YEL/GRN 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

BLK WIRE BLK/VIO WIRE BLU WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/YEL WIRE BRAKE LIGHT SWITCH (ABOVE BRAKE PEDAL) BRN WIRE BRN/BLU WIRE CAMSHAFT POSITION SENSOR (BEHIND CAMSHAFT SPROCKET) CLUTCH VACUUM VENT VALVE SWITCH (ABOVE CLUTCH PEDAL) CRUISE CONTROL SYSTEM FUEL INJECTORS FUSE 13 FUSE 5 FUSE PANEL (BEHIND LEFT SIDE OF DASH) GRN WIRE GRN/RED WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/RED WIRE GRY/WHT WIRE HOT AT ALL TIMES MOTRONIC ENGINE CONTROL MODULE (AT BASE OF WINDSHIELD IN CENTER OF PLENUM) NCA WIRE NOT USED RED WIRE RED/BLK WIRE RED/VIO WIRE THROTTLE VALVE CONTROL MODULE (ON THROTTLE BODY) TO SPARK PLUG VIO WIRE VIO/BLU WIRE VIO/GRN WIRE VIO/RED WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/RED WIRE YEL/GRN WIRE

A/C SYSTEM A/T ABS SYSTEM, TRANSMISSION SYSTEM, INSTRUMENT CLUSTER SYSTEM ACCELERATOR PEDAL POSITION SENSORS 1, 2 (IN 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 WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CRUISE CONTROL SYSTEM EARLY PROD 2003 LATE PROD 2003, 2004, 2005 FUEL PUMP RELAY FUSE 163 FUSE 162 FUSE 29 FUSE 31 FUSE 37 FUSE BRACKET FUSE PANEL GRN WIRE GRN/BRN WIRE GRN/GRY 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 IGNITION SWITCH LEAK DETECTION PUMP (LDP) (INSIDE RIGHT REAR WHEELHOUSING) M/T MASS AIRFLOW (MAF) SENSOR, INTAKE AIR TEMPERATURE (IAT) SENSOR NCA WIRE NOT USED NOT USED OFF ORG/BLK WIRE ORG/BRN WIRE OXYGEN POWER SUPPLY RELAY (ON THIRTEEN- FOLD AUXILIARY RELAY PANEL) RED WIRE RED/BLK WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/YEL WIRE RELAY PANEL RUN WIRE STARTING/ CHARGING SYSTEM TRANSMISSION SYSTEM 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

BLK WIRE BLK/VIO WIRE BLU WIRE BLU/RED WIRE BRAKE LIGHT SWITCH (ABOVE BRAKE PEDAL) BRN WIRE BRN/GRN WIRE BRN/RED WIRE CLUTCH VACUUM VENT VALVE SWITCH (ABOVE CLUTCH PEDAL) ENGINE SPEED (RPM) SENSOR (LOWER LEFT REAR REAR ENG, NEAR TRANSMISSION FLANGE) FUSE 13 FUSE PANEL FUSE 5 GRN WIRE GRN/VIO WIRE GRN/WHT WIRE HOT AT ALL TIMES KNOCK SENSOR (KS) 1 (ON LOWER RIGHT SIDE OF ENG, BELOW EXHAUST MANIFOLD) KNOCK SENSOR (KS) 2 (ON LOWER LEFT SIDE OF ENGINE, ABOVE OIL COOLER) NCA WIRE RED WIRE RED/BLK WIRE THROTTLE VALVE CONTROL MODULE (ON THROTTLE BODY) VIO WIRE VIO/BLK WIRE VIO/BRN WIRE VIO/RED WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE

BLK WIRE BLK/RED WIRE BLK/VIO WIRE BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/RED WIRE CAMSHAFT ADJUSTMENT VALVE CAMSHAFT ADJUSTMENT VALVE (EXHAUST) CRUISE CONTROL SYSTEM FUEL INJECTORS GRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/RED WIRE IGNITION COILS (WITH POWER OUTPUT STAGE) NCA WIRE PLUG RED WIRE RED/VIO 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 YEL/GRN WIRE