Volkswagen Golf Mk3 (1991-2000) motronic engine control module Wiring diagrams

1.9L 1998 ONLY 1998-99 2.0L 2.0L ONLY 2.8L 2.8L 2.0L 2.8L: IGNI- TION COIL; 2.0L: IGNI- TION COIL POWER OUT- PUT STAGE 3 1 (2.8L) (2.0L) ABS CONTROL MODULE ANTI-THEFT ENGINE DISABLE RELAY 1 AUTOMATIC TRANSMISSION CONSOLE LIGHT (W/ A/T) BLK WIRE BLK/VIO WIRE BLU WIRE BRAKE FLUID LEVEL WARNING SWITCH BRN WIRE BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CABRIO CABRIO/GOLF/ JETTA ONLY CAMSHAFT POSITION SENSOR CONTROL MODULE WITH DISPLAY UNIT INSTRU- MENT CLUSTER CONTROL MODULE WITH DISPLAY UNIT INSTRUMENT CLUSTER COOLANT FAN COOLANT FAN (2.8L, CABRIO, W/ A/C) ENGINE COOLANT LEVEL SENSOR EX CABRIO FRESH AIR/ RECIRCU- LATING FLAP TWO- WAY VALVE (2.8L, CABRIO, W/ A/C) FRESH AIR/ RECIRCULATING FLAP TWO- WAY VALVE (W/ A/C EX 2.8L, CABRIO) FROM BATTERY (DIAGRAM 1 OF 4) FROM FUSE/RELAY PANEL (DIAGRAM 1 OF 4) FRONT SIDE MARKER LIGHTS FUEL LEVEL SENDER FUEL LEVEL SENSOR GASOLINE GLOW PLUG RELAY GRN WIRE GRY/BLU WIRE GTI ONLY HEATED OXYGEN SENSOR 1 SHIELD HEATED OXYGEN SENSOR 2 SHIELD (2.8L ONLY) HEATED OXYGEN SENSOR 2 SHIELD HOOD ALARM SWITCH ALARM HORN KICK DOWN SWITCH (W/ A/T) PARK/ NEUTRAL POSITION RELAY (W/ A/T) KNOCK SENSOR 1 SHIELDS KNOCK SENSOR 2 SHIELDS (2.8L ONLY) KNOCK SENSOR 2 (2.8 ONLY) KNOCK SENSOR 1 ENGINE SPEED SENSOR LEFT FOG LIGHT LEFT FRONT PARK/ TURN SIGNAL LIGHT LEFT HEAD LIGHT RIGHT HEAD LIGHT LEFT HEADLIGHTS LOW LOW HIGH M/6 MASS AIR FLOW SENSOR MO- TRONIC ENGINE CONTROL MODULE MOTRONIC ENGINE CONTROL MODULE MULTI- FUNCTION INDICATOR MODE SELECT SWITCH (JETTA) MULTI- FUNCTION TRANS- MISSION RANGE SWITCH (W/ A/T) NCA WIRE RED WIRE RIGHT FOG LIGHT RIGHT FRONT PARK/ TURN SIGNAL LIGHT RIGHT HEADLIGHTS RIGHT SEAT BELT MODULE (2.0L ONLY) HEATED OXYGEN SENSOR 1 SHIELD SECONDARY AIR INJECTION PUMP MOTOR SPEED- OMETER VEHICLE SPEED SENSOR (A/T ONLY) SPEED- OMETER VEHICLE SPEED SENSOR ENGINE COOLANT TEMPERATURE SENSOR TRANS- MISSION CONTROL MODULE (W/ A/T) WHT WIRE

6/30 2/86 A/C SHUTOFF RELAY ABS CONTROL MODULE ALARM SYSTEM CONTROL MODULE BATTERY BLK WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BRN WIRE CIGARETTE LIGHTER COOLANT FAN CONTROL MODULE COOLANT FAN CONTROL THERMAL SWITCH D/3 DATA LINK CONN- ECTOR DATA LINK CONN- ECTOR (EX 1.9L) (1.9L) DAYTIME RUNNING LIGHTS SWITCH-ON RELAY DRIVER'S CENTRAL LOCKING SYSTEM DOOR SWITCH (1997) ALARM SYSTEM CONTROL MODULE DRIVER'S CENTRAL LOCKING SYSTEM DOOR SWITCH (1998-99) DRIVER'S POWER MIRROR (HEATER) PASSENGER'S POWER MIRROR (HEATER) FOG LIGHT RELAY FOG LIGHT SWITCH REAR WINDOW DEFOGGER SWITCH FREE AIR/ RECIRCULATION FLAP SWITCH FRESH AIR BLOWER SWITCH FROM FUSE/ RELAY PANEL (15) (DIAGRAM 2 OF 3) FROM IGNITION SWITCH (DIAGRAM FRONT INTERIOR LIGHT FUEL PUMP RELAY (GASOLINE) FUSE 10 FUSE 125 FUSE 17 FUSE 18 FUSE 19 FUSE 21 FUSE 22 FUSE 4 FUSE 5 FUSE 52 FUSE 6 FUSE 9 GENERATOR GLOVE COMPARTMENT LIGHT GLOW PLUG HEATER (1998) GRN WIRE GRY WIRE HEAD LIGHT SWITCH HEADLIGHT SWITCH HEADLIGHT/ DIMMER FLASHER SWITCH FUEL PUMP DOOR LOCK/ UNLOCK SWITCH HEATED OXYGEN SENSOR HEATED OXYGEN SENSOR 2 INSTRUMENT CLUSTER J/4 M/2 Q/3 Q/5 J/7 K/6 J/C L/7 L/5 LEFT DOOR WARNING LIGHT LEFT MAKE-UP MIRROR LIGHT RIGHT REAR READING LIGHT RIGHT MAKE-UP MIRROR LIGHT LEFT REAR READING LIGHT LEFT WASHER NOZZLE HEATER LOAD REDUCTION RELAY LUGGAGE COMPARTMENT LIGHT LUGGAGE COMPARTMENT RELEASE SWITCH MOTRONIC ENGINE CONTROL MODULE P/4 P/2 PASSENGER'S CENTRAL LOCKING SYSTEM DOOR SWITCH ALARM SYSTEM INDICATOR LIGHT POWER SUPPLY RELAY (1.9L) Q/2 Q/5 TRUNK LID RELEASE SWITCH T/1 R/10 R/5 RADIO REAR WINDOW WIPER/ WASHER RELAY RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RIGHT DOOR WARNING LIGHT RIGHT WASHER NOZZLE HEATER S/1 STARTER TEMP RESIS- TOR THIRD SPEED COOLANT FAN CONTROL THERMAL SWITCH A/C PRESSURE SWITCH TO FUSE/ RELAY PANEL (30) (DIAGRAM 3 OF 3) TO FUSE/ RELAY PANEL (DIAGRAM 3 OF 3) 4/87 TO GLOW PLUG RELAY (DIAGRAM 3 OF 3) (1997) TO IGNITION SWITCH (DIAGRAM WASHER/ WIPER INTERMITTENT RELAY WHT WIRE WINDSHIELD WIPER MOTOR Y/3 YEL WIRE

A/C CLUTCH CUT-OFF RELAY BATTERY BATTERY GROUND BLK WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BLU/RED WIRE BLU/WHT WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/WHT WIRE D/8 DATA LINK CONNECTOR (CENTER OF DASH) E/2 ENGINE SPEED SENSOR (ON CYLINDER BLOCK BEHIND OIL FILTER) FUEL PUMP FUEL PUMP RELAY FUSE 101 FUSE 15 FUSE 18 FUSE/ RELAY PANEL FUSE/RELAY PANEL GRN WIRE GRN/BLK WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/RED WIRE GRY/WHT WIRE IGNITION IGNITION (15) INSTRUMENT CLUSTER INSTRUMENT CLUSTER SYSTEM INSTRUMENT CLUSTER SYSTEM (CONTROL MODULE/ DISPLAY UNIT) INSTRUMENT CLUSTER VEHICLE SPEED SIGNAL JUNCTION BLOCK (ABOVE FUSE/ RELAY PANEL) JUNCTION CONNECTOR LEAK DETECTION PUMP M/1 M/2 MALFUNCTION INDICATOR LAMP MOTRONIC ENGINE CONTROL MODULE NCA WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE SECONDARY AIR INJECTION (AIR) PUMP RELAY (CALIF. ONLY) (BEHIND LEFT HEADLIGHT) TRANSMISSION CONTROL MODULE VIO/BLK WIRE W/1 WHT WIRE WHT/GRN WIRE WHT/RED WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/RED WIRE YEL/WHT WIRE Z/2