Volkswagen Golf Mk4 (1997-2006) engine controls system Wiring diagrams

A/C CLUTCH AMBIENT TEMPERATURE SWITCH (LEFT SIDE OF PLENUM, AT BASE OF WINDSHIELD) BLK WIRE BLK/BLU WIRE BLK/VIO WIRE BLU WIRE BLU/RED WIRE BRN WIRE BRN/BLK WIRE COOLANT FAN CONTROL MODULE (AT LEFT FRONT SIDE OF ENGINE COMPARTMENT) COOLANT FAN CONTROL THERMAL SWITCH ENGINE CONTROLS SYSTEM FUSE 16 FUSE 3 FUSE 37 FUSE 5 FUSE 8 FUSE BRACKET/ BATTERY (BEHIND BATTERY) FUSE PANEL (BEHIND LEFT SIDE OF DASH) GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/GRY WIRE GRN/RED WIRE GRY WIRE HEATER-A/C CONTROL PANEL HIGH PRESSURE SENSOR HOT AT ALL TIMES HOT IN RUN, START INSTRUMENT CLUSTER LEFT COOLANT FAN MOTRONIC ENGINE CONTROL MODULE POWER SUPPLY RELAY (BEHIND AIR CLEANER HOUSING) RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT COOLANT FAN TRANSMISSION CONTROL MODULE (AT BASE OF WINDSHIELD, RIGHT SIDE OF PLENUM) VIO WIRE VIO/YEL WIRE WHT WIRE YEL/RED WIRE

A/C CLUTCH A/C SWITCH AMBIENT TEMPERATURE SWITCH (ON LEFT SIDE OF PLENUM, AT BASE OF WINDSHIELD) BLK WIRE BLK/BLU WIRE BLK/VIO WIRE BLU WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE COOLANT FAN CONTROL MODULE (AT LEFT FRONT OF ENGINE COMPARTMENT) COOLANT FAN CONTROL THERMAL SWITCH (BOTTOM LEFT REAR OF RADIATOR) ENGINE CONTROLS SYSTEM FRESH AIR BLOWER (BEHIND RIGHT SIDE OF DASH, ON HVAC HOUSING) FRESH AIR BLOWER SWITCH FRESH/ RECIRC SWITCH FRESH/RECIRCULATING AIR DOOR SERVO MOTOR (ON RIGHT CORNER OF HVAC HOUSING) FUSE 16 FUSE 25 FUSE 3 FUSE 37 FUSE 8 FUSE/BRACKET BATTERY (BEHIND BATTERY) GRN (OR GRN/GRY) WIRE GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/RED WIRE GRY/BLU WIRE HEATER-A/C CONTROL PANEL HIGH PRESSURE SENSOR HOT AT ALL TIMES HOT IN RUN OR START FUSE PANEL (BEHIND LEFT SIDE OF DASH) FUSE 5 HOT W/ LOAD REDUCTION RELAY ENERGIZED INSTRUMENT CLUSTER LEFT COOLANT FAN MOTRONIC ENGINE CONTROL MODULE POWER SUPPLY RELAY (BEHIND AIR CLEANER HOUSING) RED WIRE RED/BLK WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RIGHT COOLANT FAN VIO WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE WHT/RED WIRE YEL WIRE YEL/RED WIRE

"ANTI-THEFT" INDICATOR 1.8L, 2.8L A/T 3.2L A/C SYSTEM ABS WARNING AIRBAG MALFUNCTION ANTI-THEFT IMMOBILIZER ANTI-THEFT SYSTEM BLK WIRE BLK/GRN WIRE BLK/VIO WIRE BLK/WHT WIRE BLU WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/WHT WIRE BRAKE PAD WEAR INDICATOR BRAKE SYSTEM WARNING BRN WIRE BRN/BLK WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM CONTROL MODULE WITH INDICATOR UNIT COOLANT TEMP GAUGE CRUISE CONTROL DIGITAL CLOCK DIGITAL DISPLAY ILLUMINATION DOOR AJAR WARNING ELECTRONIC POWER CONTROL ENGINE CONTROLS SYSTEM ENGINE COOLANT LEVEL SENSOR (IN COOLANT FLANGE) ENGINE COOLANT TEMPERATURE SENSOR EXCEPT 1.8L, 2.8L A/T FUEL GAUGE FUEL LEVEL SENSOR (IN TANK) FUSE 10 FUSE 11 FUSE PANEL FUSE 7 (BEHIND LEFT SIDE OF DASH) GENERATOR GENERATOR WARNING GLOW PLUG (1.9L) GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRY WIRE GRY/BLU WIRE GRY/RED WIRE GRY/WHT WIRE HEADLIGHTS SYSTEM HIGH BEAM HOT AT ALL TIMES FUSE 15 HOT IN ON OR START HOT WITH KEY IN IGNITION INSTRUMENT CLUSTER LEFT FRONT BRAKE PAD WEAR SENSOR BRAKE FLUID LEVEL WARNING SWITCH LEFT SEAT BELT SWITCH LEFT TURN LOW COOLANT LEVEL/TEMP WARNING LOW FUEL WARNING LOW WASHER FLUID LEVEL MALFUNCTION INDICATOR LIGHT MULTI- FUNCTION INDICATOR MODE SELECT SWITCH MULTI-FUNCTION INDICATOR MULTI-FUNCTION INDICATOR MEMORY SWITCH ODOMETER DISPLAY OIL LEVEL WARNING OIL PRESSURE SWITCH (ON OIL FILTER FLANGE) OIL PRESSURE WARNING ORG/BLK WIRE ORG/BRN WIRE ORG/GRN WIRE OUTSIDE AIR TEMPERATURE SENSOR (IF EQUIPPED) PARKING BRAKE WARNING LIGHT SWTICH REAR LID AJAR WARNING (2002 EARLY PROD) ESP/ASC CONTROL LAMP RED WIRE RED/BLU WIRE RED/VIO WIRE RIGHT TURN SEATBELT WARNING SPEEDO- METER SPEEDO- METER VEHICLE SPEED SENSOR TACHO- METER THIRTEENFOLD RELAY PANEL (UNDER LEFT SIDE OF DASH) TRANS- MISSION CONTROL MODULE TRANSMISSIONS TURN SIGNAL SWITCH VIO WIRE VIO/BLK WIRE VIO/RED WIRE VIO/WHT WIRE WARNING BUZZER WHT WIRE WINDSHIELD WASHER FLUID LEVEL SENSOR WIPER/ WASHER INTERMITTENT RELAY YEL WIRE YEL/GRN WIRE YEL/RED WIRE