Volkswagen Jetta IV (1998-2005) motronic engine control module (at base of windshield in center of plenum) Wiring diagrams

7 3 4 5 SOLID STATE A/C SYSTEM BLK WIRE BLK/ GRY WIRE BLK/ YEL WIRE BLK/GRN WIRE BLK/VIO WIRE BLU VIO/ WIRE BLU WIRE BLU/VIO WIRE BLU/WHT WIRE BRAKE BOOSTER CONTROL MODULE BRAKE PRESSURE SWITCH BRAKELIGHT SWITCH (ABOVE BRAKE PEDAL) BRN WIRE BRN/BLU WIRE COMPUTER DATA LINES SYSTEM 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 GRY YEL/ WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT IN ON OR START INSTRUMENT CLUSTER SYSTEM INTERMEDIATE SHAFT SPEED SENSOR MOTRONIC ENGINE CONTROL MODULE (AT BASE OF WINDSHIELD IN CENTER OF PLENUM) MULTI-FUNCTION TRANSMISSION RANGE SWITCH (RIGHT SIDE OF TRANSMISSION) 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/YEL WIRE SHIFT LOCK SOLENOID (AT BASE OF GEAR SELECTOR) SOLENOID VALVE SOLID STATE STARTING/ CHARGING SYSTEM THIRTEEN POSITION AUXILIARY RELAY PANEL (UNDER LEFT SIDE OF DASH) TIPTRONIC SWITCH/ SELECTOR LEVEL POSITION P/N WARNING LIGHT TRANS FLUID TEMP SENSOR TRANSMISSION CONTROL MODULE (AT BASE OF WINDSHIELD, IN RIGHT SIDE OF PLENUM) TRANSMISSION VEHICLE SPEED SENSOR (ON TOP OF TRANSMISSION) VALVE BODY VEHICLE SPEED SENSOR (ON TOP OF TRANSMISSION HOUSING) VIO GRN/ WIRE VIO WIRE VIO/BLK WIRE VIO/BLU WIRE VIO/BRN WIRE VIO/GRN WIRE VIO/GRY WIRE VIO/RED WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/GRY WIRE

BATTERY BLK WIRE BRN WIRE CLUTCH PEDAL POSITION SWITCH (ABOVE CLUTCH PEDAL) FUSE BRACKET/ BATTERY FUSE 176 IGNITION SWITCH LOCK MOTRONIC ENGINE CONTROL MODULE (AT BASE OF WINDSHIELD IN CENTER OF PLENUM) RED WIRE RED/BLK WIRE RED/BRN WIRE STARTER STARTER INTERLOCKING RELAY (THIRTEENFOLD AUXILIARY RELAY PANEL) THIRTEEN POSITION AUXILIARY RELAY PANEL (UNDER LEFT SIDE OF DASH)

7 3 4 5 SOLID STATE A/C SYSTEM BLK WIRE BLK/ GRY WIRE BLK/ YEL WIRE BLK/GRN WIRE BLK/VIO WIRE BLU VIO/ WIRE BLU WIRE BLU/VIO WIRE BLU/WHT WIRE BRAKE BOOSTER CONTROL MODULE BRAKE PRESSURE SWITCH BRAKELIGHT SWITCH (ABOVE BRAKE PEDAL) BRN WIRE BRN/BLU WIRE COMPUTER DATA LINES SYSTEM 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 GRY YEL/ WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT IN ON OR START INSTRUMENT CLUSTER SYSTEM INTERMEDIATE SHAFT SPEED SENSOR MOTRONIC ENGINE CONTROL MODULE (AT BASE OF WINDSHIELD IN CENTER OF PLENUM) MULTI-FUNCTION TRANSMISSION RANGE SWITCH (RIGHT SIDE OF TRANSMISSION) 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/YEL WIRE SHIFT LOCK SOLENOID (AT BASE OF GEAR SELECTOR) SOLENOID VALVE SOLID STATE STARTING/ CHARGING SYSTEM THIRTEEN POSITION AUXILIARY RELAY PANEL (UNDER LEFT SIDE OF DASH) TIPTRONIC SWITCH/ SELECTOR LEVEL POSITION P/N WARNING LIGHT TRANS FLUID TEMP SENSOR TRANSMISSION CONTROL MODULE (AT BASE OF WINDSHIELD, IN RIGHT SIDE OF PLENUM) TRANSMISSION VEHICLE SPEED SENSOR (ON TOP OF TRANSMISSION) VALVE BODY VEHICLE SPEED SENSOR (ON TOP OF TRANSMISSION HOUSING) VIO GRN/ WIRE VIO WIRE VIO/BLK WIRE VIO/BLU WIRE VIO/BRN WIRE VIO/GRN WIRE VIO/GRY WIRE VIO/RED WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/GRY 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

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