Volkswagen Beetle A4 (1997-2005) (below left side of dash panel cover) Wiring diagrams

A/T 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 BRAKE BOOSTER CONTROL MODULE (BRAKE SYSTEM VACUUM PUMP) (A/T) BRN WIRE BRN/BLK WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE COOLING FANS SYSTEM CRUISE CONTROL SYSTEM FUEL PUMP RELAY FUSE 163 FUSE 162 FUSE 29 FUSE 31 FUSE 51 FUSE BRACKET (ON BATTERY COVER) FUSE HOLDER (LEFT SIDE OF ENGINE COMPT) FUSE PANEL (BEHIND LEFT SIDE OF DASH) GRN WIRE GRN/WHT WIRE GRY/BLU WIRE GRY/RED WIRE GRY/WHT WIRE HEATED OXYGEN SENSOR (BLACK) HOT AT ALL TIMES IGNITION SWITCH LOCK MASS AIRFLOW SENSOR (RIGHT SIDE OF AIR CLEANER HOUSING, IN AIR INTAKE DUCT) MOTRONIC ENGINE CONTROL MODULE (BELOW LEFT SIDE OF DASH PANEL COVER) NCA WIRE POWER SUPPLY RELAY RED WIRE RED/BLK WIRE RED/GRY WIRE RED/VIO WIRE RED/YEL WIRE RELAY PANEL (BEHIND LEFT SIDE OF DASH) RUN WIRE STARTING/ CHARGING SYSTEM VIO WIRE VIO/RED WIRE VIO/WHT WIRE VIO/YEL WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE WHT/YEL WIRE YEL/BLK WIRE YEL/BRN WIRE YEL/GRN WIRE

BLK WIRE BLK/ BLU WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/VIO WIRE BLK/YEL WIRE BLU WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/WHT WIRE BRAKE LIGHT SWITCH (ABOVE BRAKE PEDAL) BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/YEL WIRE CAMSHAFT ADJUSTMENT VALVE 1 CAMSHAFT POSITION SENSOR 2 (ON FRONT OF CYLINDER HEAD, BEHIND TIMING BELT COVER) CHARGE AIR PRESSURE SENSOR (ON INTERCOOLER) CLUTCH VACUUM VENT VALVE SWITCH (ABOVE CLUTCH PEDAL) COOLING FANS SYSTEM CRUISE CONTROL SYSTEM FUEL INJECTORS FUSE 10 FUSE 13 FUSE 5 FUSE PANEL (BEHIND LEFT SIDE OF DASH) GRN WIRE GRN/BRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRY WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/RED WIRE GRY/WHT WIRE GRY/YEL WIRE HOT AT ALL TIMES IGNITION COILS MOTRONIC ENGINE CONTROL MODULE (BELOW LEFT SIDE OF DASH PANEL COVER) NCA WIRE ORG/BLK WIRE ORG/BRN WIRE RED WIRE RED/BLK WIRE RED/GRN WIRE RED/VIO WIRE THROTTLE VALVE CONTROL MODULE (ON THROTTLE BODY, ON LEFT SIDE OF ENGINE) TO SPARK PLUG TO SPARK PLUG TO SPARK PLUG VIO WIRE VIO/BLK WIRE VIO/BLU WIRE VIO/GRN WIRE VIO/GRY WIRE VIO/RED WIRE VIO/WHT WIRE VIO/YEL WIRE 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/GRY WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/RED WIRE CHARGE AIR PRESSURE SENSOR (ON INTERCOOLER, INSIDE RIGHT FRONT FENDER) CRUISE CONTROL SYSTEM EGR VACUUM REGULATOR SOLENOID VALVE (ON LEFT SIDE OF FIREWALL) FUSE FUSE 29 FUSE 32 FUSE 43 FUSE BRACKET (ON BATTERY COVER) FUSE PANEL (BEHIND LEFT SIDE OF DASH) FUSE PANEL (BEHIND LEFT SIDE OF DASH) FUSE 34 GENERATOR GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRY WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/RED WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT IN RUN OR START M/T M/T MASS AIRFLOW (MAF) SENSOR (RIGHT SIDE OF AIR CLEANER HOUSING) ORG/BLK WIRE ORG/BRN WIRE POWER SUPPLY RELAY (ON THIRTEEN POSITION AUXILIARY RELAY PANEL) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/VIO WIRE RELAY PANEL TRANSMISSIONS SYSTEM, ABS SYSTEM VIO/RED WIRE WHT WIRE WHT/BLU WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE

BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BLU/YEL WIRE BRAKELIGHT SWITCH/ BRAKE VACUUM VENT VALVE SWITCH (ABOVE BRAKE PEDAL) BRN WIRE CLUTCH VACUUM VENT VALVE SWITCH (M/T) (ABOVE CLUTCH PEDAL) COOLANT GLOW PLUGS COOLANT PREHEATING RELAY (HIGH HEAT OUTPUT) COOLANT PREHEATING RELAY (LOW HEAT OUTPUT) ENGINE GLOW PLUGS FUSE 13 FUSE 162 FUSE 163 FUSE BRACKET (ON BATTERY COVER) FUSE PANEL (BEHIND LEFT SIDE OF DASH) GLOW PLUG TRIGGERING CONTROL MODULE GRN/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/WHT WIRE HOT AT ALL TIMES 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 A/T ACCELERATOR PEDAL POSITION SENSOR (IN PEDAL ASSEMBLY) BLK WIRE BLK/BLU 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 BRAKE BOOSTER CONTROL MODULE BRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE COOLING FANS SYSTEM CRUISE CONTROL SYSTEM FUEL PUMP RELAY FUSE 163 FUSE 164 FUSE BRACKET (ON BATTERY COVER) FUSE PANEL (BEHIND LEFT SIDE OF DASH) FUSE 29 GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/RED WIRE GRY/WHT WIRE HEATED OXYGEN SENSOR (BLACK) HEATED OXYGEN SENSOR (BROWN) HOT AT ALL TIMES IGNITION SWITCH LEAK DETECTION PUMP (IN RIGHT REAR WHEELWELL, ABOVE EVAP CANISTER) LOCK MASS AIRFLOW (MAF) SENSOR, INTAKE AIR TEMPERATURE (IAT) SENSOR MOTRONIC ENGINE CONTROL MODULE (BELOW LEFT SIDE OF DASH PANEL COVER) NCA WIRE POWER SUPPLY RELAY RED WIRE RED/BLK WIRE RED/GRY WIRE RED/VIO WIRE RED/YEL WIRE RELAY PANEL (BEHIND LEFT SIDE OF DASH) RUN WIRE STARTING/ CHARGING SYSTEM VIO WIRE VIO/GRN WIRE VIO/RED WIRE VIO/WHT WIRE WHT WIRE WHT/GRN WIRE WHT/RED WIRE YEL/BLK WIRE YEL/BRN WIRE YEL/GRN WIRE

AIRBAG CONTROL MODULE (ON CENTER FLOOR TUNNEL, BELOW HEATER CORE HOUSING) BLK WIRE BLK/BLU WIRE BLK/VIO WIRE BLU WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE FUEL PUMP FUSE 32 FUSE 34 FUSE 43 FUSE 28 FUSE PANEL GRN/BLK WIRE GRN/BLU WIRE GRN/VIO WIRE GRY WIRE GRY/BRN WIRE GRY/WHT WIRE INSTRUMENT CLUSTER KNOCK SENSOR 1 (ON LEFT SIDE OF ENGINE, TOWARDS FRONT OF CYL BLOCK) KNOCK SENSOR 2 (ON LEFT SIDE OF ENGINE, BEHIND IGN COIL) NCA WIRE ORG/BLK WIRE ORG/BRN WIRE RED WIRE RED/BLK WIRE RED/VIO WIRE RED/WHT WIRE SECONDARY AIR INJECTION PUMP MOTOR (LEFT OF REAR CYLINDER HEAD) TRANSMISSIONS SYSTEM VIO/RED WIRE VIO/WHT WIRE WHT WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE

BLK WIRE BLK/ BLU WIRE BLK/BLU 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 BRN/WHT WIRE CAMSHAFT POSITION SENSOR (ON CYLINDER HEAD, BEHIND CAMSHAFT SPROCKET) CLUTCH VACUUM VENT VALVE SWITCH (ABOVE CLUTCH PEDAL) CRUISE CONTROL SYSTEM FUEL INJECTORS FUSE 13 FUSE 37 FUSE 5 FUSE PANEL (BEHIND LEFT SIDE OF DASH) GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/VIO WIRE GRN/YEL WIRE GRY WIRE HOT AT ALL TIMES IGNITION COIL INTAKE MANIFOLD CHANGEOVER VALVE INTAKE MANIFOLD TUNING VALVE 2 MOTRONIC ENGINE CONTROL MODULE (BELOW LEFT SIDE OF DASH PANEL COVER) NCA WIRE ORG/BLK WIRE ORG/BRN WIRE RED WIRE RED/BLK WIRE RED/GRN WIRE RED/VIO WIRE RED/WHT 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 WHT/YEL WIRE YEL/GRN WIRE

A/C SYSTEM ACCELERATOR PEDAL POSITION SENSOR (IN PEDAL ASSEMBLY) 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/RED WIRE BRN/WHT WIRE BRN/YEL WIRE COOLING FANS SYSTEM CRUISE CONTROL SYSTEM FUEL PUMP RELAY FUSE 163 FUSE 162 FUSE BRACKET (ON BATTERY COVER) FUSE PANEL (BEHIND LEFT SIDE OF DASH) FUSE 29 GRN WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/RED WIRE GRY/WHT WIRE HEATED OXYGEN SENSOR (BLACK) HEATED OXYGEN SENSOR (BROWN) HOT AT ALL TIMES IGNITION SWITCH LEAK DETECTION PUMP (IN RIGHT REAR WHEELWELL, ABOVE EVAP CANISTER) LOCK MASS AIRFLOW (MAF) SENSOR, INTAKE AIR TEMPERATURE (IAT) SENSOR MOTRONIC ENGINE CONTROL MODULE (BELOW LEFT SIDE OF DASH PANEL COVER) NCA WIRE POWER SUPPLY RELAY RED WIRE RED/BLK WIRE RED/GRY WIRE RED/VIO WIRE RED/YEL WIRE RELAY PANEL (BEHIND LEFT SIDE OF DASH) RUN WIRE STARTING/ CHARGING SYSTEM VIO WIRE VIO/GRN WIRE VIO/RED WIRE VIO/WHT WIRE WHT WIRE WHT/RED WIRE WHT/YEL WIRE YEL/BLK WIRE YEL/BRN WIRE YEL/GRN WIRE

AIRBAG CONTROL MODULE (ON CENTER FLOOR TUNNEL, BELOW HEATER CORE HOUSING) BLK WIRE BLK/VIO WIRE BLU WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/RED WIRE BRN/YEL WIRE FUEL PUMP FUSE 32 FUSE 34 FUSE 43 FUSE 28 FUSE PANEL GRN WIRE GRN/BLU WIRE GRN/VIO WIRE GRY WIRE GRY/BRN WIRE GRY/WHT WIRE INSTRUMENT CLUSTER KNOCK SENSOR 1 (ON LEFT SIDE OF ENGINE, TOWARDS FRONT OF CYL BLOCK) KNOCK SENSOR 2 (ON LEFT SIDE OF ENGINE, BEHIND IGN COIL) NCA WIRE ORG/BLK WIRE ORG/BRN WIRE RED WIRE RED/BLK WIRE RED/VIO WIRE SECONDARY AIR INJECTION PUMP MOTOR (LEFT OF REAR CYLINDER HEAD) TRANSMISSIONS SYSTEM VIO/RED WIRE VIO/WHT WIRE WHT WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE

BLK WIRE BLK/ BLU 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 (ON CYLINDER HEAD, BEHIND CAMSHAFT SPROCKET) CLUTCH VACUUM VENT VALVE SWITCH (ABOVE CLUTCH PEDAL) CRUISE CONTROL SYSTEM FUEL INJECTORS FUSE 13 FUSE 37 FUSE 5 FUSE PANEL (BEHIND LEFT SIDE OF DASH) GRN WIRE GRN/BLU WIRE GRN/VIO WIRE GRN/YEL WIRE GRY WIRE HOT AT ALL TIMES IGNITION COIL MOTRONIC ENGINE CONTROL MODULE (BELOW LEFT SIDE OF DASH PANEL COVER) NCA WIRE ORG/BLK WIRE ORG/BRN WIRE RED WIRE RED/BLK WIRE RED/GRN WIRE RED/VIO WIRE THROTTLE VALVE CONTROL MODULE (ON THROTTLE BODY) TO SPARK PLUG TO SPARK PLUG 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