Volkswagen Passat B4 (1993-1997) motronic engine control module Wiring diagrams

1995 VFTC 2.0L 2.8L A/C CUT OUT THERMAL SWITCH/THIRD SPEED COOLANT A/C PRESSURE SWITCH A/C SYSTEM (A/C CLUTCH) A/C SYSTEM (A/C SWITCH) AFTERRUN COOLANT FAN CONTROL THERMAL SWITCH AMBIENT TEMPERATURE SWITCH (RIGHT PLENUM CHAMBER) BATTERY BLK/GRN WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/RED WIRE BRN WIRE BRN/RED WIRE BRN/WHT WIRE COOLANT FAN COOLANT FAN CONTROL MODULE (LEFT SIDE OF ENGINE COMPT) COOLANT FAN CONTROL THERMOSWITCH COOLANT PUMP D/3 FAN SWITCH (2.8L ONLY) (CENTER OF ENGINE COMPT) FUSE 108 FUSE 107 FUSE 13 FUSE 19 FUSE 4 FUSE 78 FUSE/ RELAY PANEL GRN WIRE GRN/BLK WIRE GRN/BLU (OR GRN) WIRE GRN/BLU WIRE GRN/RED WIRE GRN/YEL WIRE HOT AT ALL TIMES HOT IN RUN OR START MOTRONIC ENGINE CONTROL MODULE RED WIRE RED/BLK WIRE RED/WHT WIRE WIRE CONNECTOR YEL WIRE

1995 ONLY 1996 ONLY 2.0L SECONDARY AIR INJECTION (AIR) PUMP 2.8L CAMSHAFT POSITION SENSOR 3/31 ABS CONTROL MODULE BLK WIRE BLU WIRE BRN (OR BRN/GRN) WIRE BRN (OR BRN/RED) WIRE BRN WIRE BRN/WHT (OR BRN/RED) WIRE BRN/YEL WIRE CONTROL MODULE WITH DISPLAY UNIT COOLANT CIRCULATION PUMP ENGINE COOLANT TEMPERATURE SENSOR ENGINE COOLANT TEMPERATURE SENSOR, AFTER-RUN COOLANT FAN CONTROL THERMOSWITCH ENGINE SPEED SENSOR FRESH AIR BLOWER FRESH AIR BLOWER SERIES RESISTANCE WITH FUSE FUEL LEVEL SENSOR FUSE/ RELAY PANEL GRN WIRE HEATED OXYGEN SENSOR SHIELD IGNITION COIL IGNITION COIL POWER STAGE OUTPUT INSTRUMENT CLUSTER KNOCK SENSOR KNOCK SENSOR II KNOCK SENSOR SHIELD M/6 MASS AIR FLOW SENSOR MOTOR MOTRONIC ENGINE CONTROL MODULE NCA WIRE PARK/ NEUTRAL POSITION RELAY POSITIVE CRANKCASE VENTILATION HEATING ELEMENT RED WIRE V/2 (NOT USED) VEHICLE SPEED SENSOR W/ A/C W/ A/T W/O A/C WHT WIRE YEL WIRE

1995 VFTC 2.0L 2.0L 2.8L 2.8L A/C AND FRESH/RECIRC SWITCH A/C CLUTCH A/C CUT OUT THERMAL SWITCH/THIRD SPEED COOLANT A/C PRESSURE SWITCH A/C SWITCH AFTERRUN COOLANT FAN CONTROL THERMAL SWITCH AMBIENT TEMPERATURE SWITCH (RIGHT PLENUM CHAMBER) BATTERY BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/RED WIRE BRN WIRE BRN/RED WIRE BRN/WHT WIRE COOLANT FAN COOLANT FAN CONTROL MODULE (LEFT SIDE OF ENGINE COMPT) COOLANT FAN CONTROL THERMOSWITCH COOLANT PUMP D/3 FAN SWITCH (2.8L ONLY) (CENTER OF ENGINE COMPT) FRESH AIR BLOWER FRESH AIR BLOWER SERIES RESISTANCE FRESH AIR BLOWER SWITCH FRESH/ RECIRC SWITCH FRESH/RECIRC FLAP SWITCH FUSE 108 FUSE 107 FUSE 13 FUSE 19 FUSE 4 FUSE 6 FUSE 78 FUSE/ RELAY PANEL GRN WIRE GRN/BLK WIRE GRN/BLU (OR GRN) WIRE GRN/BLU WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT IN RUN HOT IN RUN OR START MOTRONIC ENGINE CONTROL MODULE NCA WIRE Q/2 RED WIRE RED/BLK WIRE RED/WHT WIRE WIRE CONNECTOR YEL WIRE

1/86 A/T M/T AIRBAG CONTROL MODULE ALARM SYSTEM CONTROL MODULE BLK WIRE BLK/BLU WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE COOLANT FAN CONTROL MODULE CRUISE CONTROL SWITCH SEAT BELT WARNING SYSTEM D/11 D/8 D/9 DRIVER'S SEAT REGULATING HEATER SWITCH DUAL HORN RELAY DUAL HORNS F/6 FROM FUSE/ RELAY PANEL FUEL PUMP RELAY FUSE 13 FUSE 14 FUSE 15 FUSE 16 FUSE 17 FUSE/ RELAY PANEL (UNDER LEFT SIDE OF DASH) GLOVE COMPARTMENT LIGHT BRAKE/ PARKING BRAKE INDICATOR HEADLIGHT DIMMER/ FLASHER SWITCH IGNITION SWITCH INSTRUMENT CLUSTER INTERIOR LIGHT WITH DELAY SWITCH SUNROOF SWITCH LEFT WASHER NOZZLE HEATER, RIGHT WASHER NOZZLE HEATER LOCK M/5 MIRROR ADJUSTMENT SWITCH MOTRONIC ENGINE CONTROL MODULE MULTI- FUNCTION SWITCH NCA WIRE PASSENGER'S SEAT HEATER CONTROL UNIT DRIVER'S SEAT HEATER CONTROL UNIT POSITIVE CRANKCASE VENTILATION HEATING ELEMENT Q/4 X/4 E/2 RED WIRE RED/BLK WIRE RED/YEL WIRE RELAY RIGHT FRONT POWER WINDOW CONTROL MODULE LEFT FRONT POWER WINDOW CONTROL MODULE SHIFT LOCK SOLENOID TRANSMISSION CONTROL MODULE THIRD SPEED COOLANT FAN CONTROL THERMO- SWITCH (3-SPEED) TO FUSE/ RELAY PANEL (15) (DIAGRAM 4 OF 4) TO FUSE/RELAY PANEL TO FUSE/RELAY PANEL LOAD REDUCTION RELAY (DIAGRAM 1 OF 4) TV 4 JUNCTION CONNECTOR (BEHIND FUSE/ RELAY PANEL) TV 5 JUNCTION CONNECTOR (BEHIND FUSE/ RELAY PANEL) WHT WIRE YEL WIRE

2.0L 2.8L A/T ALARM SYSTEM CONTROL MODULE B/5 B/5 BLK WIRE BRN WIRE CAMSHAFT POSITION SENSOR (CMP) CAMSHAFT POSITION SENSOR (CMP) VEHICLE SPEED SENSOR (VSS) ENGINE CONTROL MODULE F/1 FROM FUSE/ RELAY PANEL (30) (DIAGRAM 3 OF 4) FROM IGNITION SWITCH (50) (DIAGRAM 2 OF 4) FROM RELAY PANEL (15) (DIAGRAM 2 OF 4) FUSE/ RELAY PANEL (UNDER LEFT SIDE OF DASH) GRN WIRE HEADLIGHT WASHER SYSTEM RELAY IGNITION COIL IGNITION COIL ENGINE CONTROL MODULE IGNITION COIL POWER OUTPUT STAGE M/T MOTRONIC ENGINE CONTROL MODULE PARK/ NEUTRAL POSITION RELAY TRANSMISSION CONTROL MODULE RED WIRE RED/BLK WIRE STARTER PARK/ NEUTRAL POSITION SWITCH VEHICLE SPEED SENSOR (VSS) W/ ANTI- THEFT Y/1 Y/2 YEL WIRE

AIR CONDITIONING SYSTEM BATTERY BATTERY GROUND BLK WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/RED WIRE BRN/YEL WIRE DATA LINK CONNECTOR (CENTER OF DASH) ENGINE SPEED SENSOR (FRONT CENTER OF ENGINE COMPT) FUEL PUMP FUEL PUMP RELAY FUSE 15 FUSE 18 FUSE 88 FUSE/ RELAY PANEL FUSE/RELAY PANEL GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/RED WIRE GRY/WHT WIRE IGNITION INSTRUMENT CLUSTER SYSTEM INSTRUMENT CLUSTER SYSTEM (CONTROL MODULE/ DISPLAY UNIT) INSTRUMENT CLUSTER VEHICLE SPEED SIGNAL JUMPER CONNECTOR M/1 M/2 MOTRONIC ENGINE CONTROL MODULE NCA WIRE RED WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE SECONDARY AIR INJECTION (AIR) PUMP MOTOR SECONDARY AIR INJECTION (AIR) PUMP RELAY TRANSMISSION CONTROL MODULE TRANSMISSION CONTROL SYSTEM VIO/WHT WIRE W/1 WHT WIRE WHT/GRY WIRE WHT/RED WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/RED WIRE Z/2

A/C SYSTEM A/T CONTROL MODULE A/T ONLY BATTERY BATTERY GROUND BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/VIO WIRE BLK/WHT WIRE BLU RED/ WIRE BLU WIRE BLU/GRN WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/RED WIRE BRN/WHT WIRE ECM POWER RELAY ENGINE SPEED SENSOR FUEL PUMP RELAY FUEL PUMP WARNING INDICATOR MODULE (MIL) FUSE 18 FUSE 88 FUSE/ RELAY PANEL FUSE/RELAY PANEL FUSE/RELAY PANEL INSTRUMENT CLUSTER SYSTEM (PIN 10) GI/10 GRN WIRE GRN/BLK WIRE GRN/GRY WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/RED WIRE GRY/WHT WIRE GRY/YEL WIRE IGNITION IGNITION COIL INSTRUMENT CLUSTER INSTRUMENT CLUSTER SYSTEM (PIN 26) JUMPER CONNECTOR JUNCTION CONNECTOR M/1 M/2 MOTRONIC ENGINE CONTROL MODULE NCA WIRE RED WIRE RED/BLU WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE SECONDARY AIR INJECTION PUMP MOTOR SECONDARY AIR INJECTION RELAY SECONDARY AIR INJECTION SOLENOID VALVE TOP OF ENGINE) VEHICLE SPEED OUTPUT VEHICLE SPEED SENSOR VIO WIRE VIO/WHT WIRE W/1 WHT RED/ WIRE WHT WIRE WHT/RED WIRE Y/1 YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/RED WIRE Z/2