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

BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/VIO WIRE BLK/WHT WIRE BLU WIRE BLU/WHT WIRE BRAKELIGHT SWITCH (ABOVE BRAKE PEDAL) BRN WIRE BRN/BLU WIRE COMPUTER DATA LINES SYSTEM COOLANT FAN CONTROL MODULE (LEFT OF RADIATOR) DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH, BELOW STEERING COLUMN) FUSE 11 FUSE 13 FUSE 31 FUSE 7 FUSE PANEL (BEHIND LEFT SIDE OF DASH) FUSE 15 GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT IN ON OR START MOTRONIC ENGINE CONTROL MODULE (BELOW LEFT SIDE OF DASH PANEL COVER) MULTI-FUNCTION TRANSMISSION RANGE SWITCH (TOP REAR OF TRANSAXLE) NCA WIRE ORG/BLK WIRE ORG/BRN WIRE PARK/ NEUTRAL POSITION RELAY RED WIRE RED/BLK WIRE RED/BRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE SELECTOR LEVEL POSITION P/N WARNING LIGHT SHIFT LOCK SOLENOID SOLENOID VALVES SOLID STATE STARTING/ CHARGING SYSTEM THIRTEEN POSITION AUXILIARY RELAY PANEL (INTEGRAL TO RELAY PANEL) TRANSMISSION CONTROL MODULE (BELOW RIGHT SIDE OF DASH PANEL COVER) TRANSMISSION FLUID TEMPERATURE SENSOR TRANSMISSION VEHICLE SPEED SENSOR (ON TOP OF TRANSAXLE) VALVE BODY VEHICLE SPEED SENSOR VIO/BLK WIRE WHT WIRE YEL WIRE YEL/BLU WIRE

BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/VIO WIRE BLK/WHT WIRE BLU WIRE BLU/WHT WIRE BRAKELIGHT SWITCH (ABOVE BRAKE PEDAL) BRN WIRE BRN/BLU WIRE COMPUTER DATA LINES SYSTEM COOLANT FAN CONTROL MODULE (LEFT OF RADIATOR) DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH, BELOW STEERING COLUMN) FUSE 11 FUSE 13 FUSE 31 FUSE 7 FUSE PANEL (BEHIND LEFT SIDE OF DASH) FUSE 15 GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT IN ON OR START MOTRONIC ENGINE CONTROL MODULE (BELOW LEFT SIDE OF DASH PANEL COVER) MULTI-FUNCTION TRANSMISSION RANGE SWITCH (TOP REAR OF TRANSAXLE) NCA WIRE ORG/BLK WIRE ORG/BRN WIRE PARK/ NEUTRAL POSITION RELAY RED WIRE RED/BLK WIRE RED/BRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE SELECTOR LEVEL POSITION P/N WARNING LIGHT SHIFT LOCK SOLENOID SOLENOID VALVES SOLID STATE STARTING/ CHARGING SYSTEM THIRTEEN POSITION AUXILIARY RELAY PANEL (INTEGRAL TO RELAY PANEL) TRANSMISSION CONTROL MODULE (BELOW RIGHT SIDE OF DASH PANEL COVER) TRANSMISSION FLUID TEMPERATURE SENSOR TRANSMISSION VEHICLE SPEED SENSOR (ON TOP OF TRANSAXLE) VALVE BODY VEHICLE SPEED SENSOR VIO/BLK WIRE WHT WIRE YEL WIRE YEL/BLU WIRE

BLK WIRE BLK/BLU WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/GRY WIRE BRAKELIGHT SWITCH/ BRAKE VACUUM VENT VALVE SWITCH (ABOVE BRAKE PEDAL) BRN WIRE BRN/WHT WIRE CRUISE CONTROL SWITCH FUSE 13 FUSE 5 FUSE PANEL (BEHIND LEFT SIDE OF DASH) GRN/BLU WIRE GRN/WHT WIRE GRY/BLU WIRE GRY/RED WIRE HOT AT ALL TIMES HOT IN ON OR START MOTRONIC ENGINE CONTROL MODULE (BELOW LEFT SIDE OF DASH PANEL COVER) NCA WIRE RED WIRE RED/BLK WIRE RED/YEL WIRE THROTTLE POSITION SENSOR (ABOVE ACCELERATOR PEDAL) THROTTLE VALVE CONTROL MODULE (ON THROTTLE BODY) VIO WIRE VIO/RED WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/RED WIRE YEL WIRE YEL/GRN WIRE

1.8L, 2.0L (W/ CRUISE CONTROL) ABS WARNING ASC WARNING BLK WIRE BLK/GRY WIRE BRAKE SYSTEM WARNING BRN WIRE CONTROL MODULE W/ INDICATOR UNIT FUSE 15 FUSE PANEL (BEHIND LEFT SIDE OF DASH) GRN WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER LEFT FRONT ABS WHEEL SPEED SENSOR (BEHIND LEFT FRONT WHEEL) LEFT REAR ABS WHEEL SPEED SENSOR (BEHIND LEFT REAR WHEEL) MOTRONIC ENGINE CONTROL MODULE (BELOW LEFT SIDE OF DASH PANEL COVER) ORG/ WIRE ORG/BLK WIRE ORG/BRN WIRE RED WIRE RED/VIO WIRE RIGHT FRONT ABS WHEEL SPEED SENSOR (BEHIND RIGHT FRONT WHEEL) RIGHT REAR ABS WHEEL SPEED SENSOR (BEHIND RIGHT REAR WHEEL) STEERING ANGLE SENSOR TRANSMISSION CONTROL MODULE (TCM) (BELOW RIGHT SIDE OF DASH, DEFROSTER DUCT) VIO WIRE WHT WIRE YEL WIRE

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 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

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

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