Mercedes-Benz C-class AMG W203/S203/CL203 (2001-2004) front pre-fuse box (right rear of engine compt) Wiring diagrams

1 2 9 10 31 30 CAN L CAN H 2 3 1 2 4 1 30 FZU A-ST 3 4 2 5 6 SIG 4 3 2 30 FZU A-ST 4 5 CAN L CAN H 4 6 LOW BEAM LOW BEAM 6 11 2 12 PARK LAMP TURN LAMP PARK LAMP TURN LAMP 7 8 TURN SIG TURN SIG ALARM SIGNAL HORN AMPLIFIER MODULE ATA HOOD SWITCH ATA INCLINATION SENSOR BLK WIRE BLK/GRN WIRE BLK/WHT WIRE BLU/GRN WIRE BLU/RED WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/PNK WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM COUPE, SEDAN FRONT PRE-FUSE BOX (RIGHT REAR OF ENGINE COMPT) FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 2 FUSE 4 FUSE 8 GRN WIRE GRN/GRY WIRE GRN/YEL WIRE GRY/BLK WIRE GRY/RED WIRE HEADLIGHTS SYSTEM HOOD SW HOT AT ALL TIMES LEFT FRONT DOOR CONTACT SWITCH LEFT REAR DOOR CONTACT SWITCH (SEDAN, WAGON) LOCK PAWL ROTARY TUMBLER SWITCH MOTOR W/ POSITION, OBSTRUCTION SENSORS NCA WIRE OVERHEAD CONTROL PANEL CONTROL MODULE PNK/RED WIRE REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK) RED WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT DOOR CONTACT SWITCH RIGHT REAR DOOR CONTACT SWITCH (SEDAN, WAGON) ROOF DRIVE SYSTEM SEDAN, COUPE SEDAN, COUPE WAGON SIG TRUNK LID CENTRAL LOCKING MOTOR TRUNK LID CONTACT SWITCH TRUNK LID EMERGENCY RELEASE SWITCH TRUNK LID EXTERNAL OPERATION SWITCH VIO/BLU WIRE WAGON COUPE WHT WIRE YEL WIRE YEL/BLK WIRE

1 2 3 31 DATA 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 CAN H CAN L 1 2 3 6 4 PRESS/TEMP PRESS/TEMP PRESS/TEMP PRESS/TEMP RESIDUAL HEAT 9 10 COMPUTER DATA LINES SYSTEM CAN L CAN H AAC PUSHBUTTON CONTROL MODULE AIR HUMIDITY SENSOR LEFT DEFROSTER VENT FLAP ACTUATOR BLK/BRN WIRE BLK/WHT WIRE BLOWER MOTOR BLU WIRE BLU/PNK WIRE BLU/RED WIRE BLU/VIO WIRE BRN WIRE BRN/BLU WIRE BRN/RED WIRE BRN/YEL WIRE CAN-L CAN-H COMPUTER DATA LINES SYSTEM COOLANT CIRCULATION PUMP (W/ RESIDUAL ENGINE HEAT UTILIZATION SYSTEM) ELECTRIC SUCTION FAN ENGINE, A/C WITH INTEGRATED CONTROL EVAP SENS FRONT PRE-FUSE BOX (RIGHT REAR OF ENGINE COMPT) FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 30 FUSE 41 FUSE 5 FUSE 51 GRN WIRE GRN/BLU WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/RED WIRE GRY/VIO WIRE HEATING SYSTEMS RECIRC- ULATION UNIT FRESH AIR/RECIRC AIR FLAPS ACTUATOR HEATING SYSTEMS RECIRCULATION UNIT HOT AT ALL TIMES HOT IN RUN OR START IN-CAR TEMPERATURE SENSOR IN-CAR TEMPERATURE SENSOR FSN MOTOR INTERIOR FUSE BOX (UNDER LEFT END OF DASH) LEFT BLENDING AIR FLAP ACTUATOR RIGHT BLENDING AIR FLAP ACTUATOR LEFT FOOTWELL FLAP ACTUATOR LEFT FRESH AIR FLAP ACTUATOR RIGHT FOOTWELL FLAP ACTUATOR LEFT, RIGHT DEFROSTER FLAPS ACTUATOR FRESH AIR FLAPS ACTUATOR LEFT, RIGHT FOOTWELL FLAPS ACTUATOR ME-SFI CONTROL MODULE NCA WIRE OVERHEAD CONTROL PANEL CONTROL MODULE R BLWR SELECT SIG R BLWR SELECT RECIRC UNIT 30 COMMON REAR BLOWER ELECTRONIC SELECTOR WHEEL REAR BLOWER MOTOR REAR BLOWER MOTOR CONTROL MODULE (BELOW REAR OF CENTER CONSOLE) RECIRC UNIT R BLWR CTRL RED WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT DEFROSTER VENT FLAP ACTUATOR RIGHT FRESH AIR FLAP ACTUATOR W/ COMFORT AAC W/ OUTSIDE TEMPERATURE INDICATOR WHT/PNK WIRE WHT/VIO WIRE

1 2 3 6 4 PRESS/TEMP PRESS/TEMP PRESS/TEMP PRESS/TEMP RESIDUAL HEAT 2.3L 2.6L, 3.2L 5 9 CT SENS + SENS - BLK/WHT WIRE BLU/RED WIRE BRN WIRE BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CAN-L CAN-H COMPUTER DATA LINES SYSTEM COOL FAN COOLANT CIRCULATION PUMP (W/ RESIDUAL ENGINE HEAT UTILIZATION SYSTEM) COOLANT TEMPERATURE SENSOR (2.3L) (TOP RIGHT SIDE OF ENGINE) COOLANT TEMPERATURE SENSOR (2.6L, 3.2L) (RIGHT FRONT OF ENGINE) CT SENS - CT SENS + ELECTRIC SUCTION FAN ENGINE, A/C WITH INTEGRATED CONTROL ENGINE CONTROLS SYSTEM FRONT PRE-FUSE BOX (RIGHT REAR OF ENGINE COMPT) FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 5 FUSE 51 GRN/BLU WIRE GRN/RED WIRE GRY/VIO WIRE HOT AT ALL TIMES HOT IN RUN OR START ME-SFI CONTROL MODULE RED WIRE RED/WHT WIRE RED/YEL WIRE

2 1 CAN L CAN H 2.6L 3.2L 4 5 CAN L CAN H BLK WIRE BLU/YEL WIRE BRAKE BOOSTER VACUUM PUMP CONTROL MODULE BRN WIRE BRN/RED WIRE BRN/WHT WIRE COMAND OPERATING, DISPLAY, CONTROL MODULE COMPUTER DATA LINES SYSTEM (HIGH/LOW BUS CIRCUIT) DATALINK CONNECTOR (UNDER LEFT SIDE OF DASH) DI CONTROL MODULE DIAG ENGINE CONTROL MODULE (LEFT REAR OF ENGINE COMPT) ETC CONTROL MODULE (UNDER RIGHT SIDE OF DASH) FRONT PRE-FUSE BOX (RIGHT REAR OF ENGINE COMPT) FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 4 FUSE 62 GRN/BLK WIRE GRN/BLU WIRE GRN/PNK WIRE GRN/RED WIRE GRY WIRE GRY/YEL WIRE HOT AT ALL TIMES LEFT HEADLAMP UNIT RIGHT HEADLAMP UNIT PNK/RED WIRE RADIO TELEPHONE, TELE AID TRANSMITTER/ RECEIVER RED WIRE RED/GRN WIRE W/ COMAND W/O COMAND WHT/BRN WIRE WHT/GRN WIRE WHT/YEL WIRE

1 2 CAN B L CAN B H 2 4 1 3 AMBIENT LIGHT, ROAD AHEAD SENSORS 24 25 23 R LICENSE L LICENSE CHMSL 3 4 CAN-B L CAN-B H 5 6 7 6 CAN-B L CAN-B H CAN-B L CAN-B H 9 10 CAN-B L CAN-B H AUTOMATIC LIGHT SWITCH DAYLIGHT SENSOR (FRONT OF HEADLINER) 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/GRN WIRE BRN/GRY WIRE BRN/RED WIRE CENTER HIGH MOUNT STOP LAMP RIGHT REAR SIDE MARKER LAMP (COUPE) COMBINATION SWITCH COMPUTER DATA LINES SYSTEM COUPE, SEDAN, WAGON DI CONTROL MODULE FRONT PRE-FUSE BOX (RIGHT REAR OF ENGINE COMPT) FUSE 2 FUSE 4 GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/RED WIRE GRY/VIO WIRE GRY/YEL WIRE HAZARD SWITCH HOT AT ALL TIMES LEFT REAR SIDE MARKER LAMP (COUPE) LEFT TAILLAMP UNIT OVERHEAD CONTROL PANEL CONTROL MODULE PNK CAN-B H WIRE PNK WIRE PNK/RED WIRE REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK) RED WIRE RED/YEL WIRE RIGHT LICENSE PLATE LAMP LEFT LICENSE PLATE LAMP RIGHT TAILLAMP UNIT TAIL/ PARK LAMP BACK- UP LAMP STOP LAMP TURN SIGNAL LAMP TURN SIGNAL SWITCH UPPER CONTROL PANEL CONTROL MODULE VIO WIRE VIO/BLU WIRE WHT WIRE YEL WIRE

AIR PUMP RELAY ANTI-LOCK BRAKES SYSTEM BLA BLK WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/PNK WIRE BLK/RED WIRE BLK/YEL WIRE BRN WIRE BRN/RED WIRE CIRCUIT CIRCUIT 15 RELAY CIRCUIT 87 RELAY (CHASSIS) CIRCUIT 87 RELAY (ENGINE) CRASH DIAG FANFARE HORNS RELAY FROM FUSE 42 (DIAGRAM 1 OF 3) FRONT PRE-FUSE BOX (RIGHT REAR OF ENGINE COMPT) FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 4 FUSE 44 FUSE 46 FUSE 47 FUSE 48 FUSE 49 FUSE 50 FUSE 51 FUSE 45 FUSE 52 FUSE 53 FUSE 54 FUSE 55 FUSE 56 FUSE 57 FUSE 6 FUSE 62 FUSE 65 40 GRN WIRE GRY WIRE GRY/YEL WIRE HEADLIGHTS SYSTEM HOT AT ALL TIMES PNK/BLK WIRE RANGE RED WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RELAY STARTER RELAY STARTING SYSTEM ENGINE CONTROLS SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM TELEPHONE, TELE AID TRANSMITTER TO PIN 1, TO PIN 2, TO PIN 3, TO PIN 4, TO PIN 6, TO PIN 8, TO PIN 8, TO PIN 4, TO PIN 9, TRANSMISSION SYSTEM VIO WIRE VSS LF VSS RF WIPER WIPER ON/OFF RELAY WIPER STAGE 1-2 RELAY WIPER/WASHER SYSTEM YEL WIRE

17 18 12 13 CAN-B L CAN-B H CAN-B L CAN-B H 2 1 CAN L CAN H 4 5 CAN L CAN H 6 5 2 1 4 3 R LO BEAM R HI BEAM R FOG L FOG L LO BEAM L HI BEAM 9 10 CAN-B L CAN-B H AMBIENT LIGHT, ROAD AHEAD SENSORS AUTOMATIC LIGHT SWITCH DAYLIGHT SENSOR (FRONT OF HEADLINER) BLK WIRE BLU WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM EXTERIOR LAMPS FOG LAMP FOG LAMP IND FRONT PRE-FUSE BOX (RIGHT REAR OF ENGINE COMPT) FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 4 FUSE 50 FUSE 62 FUSE 63 GRN WIRE GRN/BLK WIRE GRN/PNK WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/YEL WIRE HEAD AUTO HEADLAMP WASH HIGH BEAM INDICATOR HIGH BEAM LOW BEAM HOT AT ALL TIMES HOT IN RUN OR START IN OUT INSTRUMENT CLUSTER LAMP SWITCH MODULE LEFT FRONT FOG LAMP RIGHT FRONT FOG LAMP LEFT HEADLAMP UNIT LEFT RIGHT MIRROR FOLD- MIRROR SELECT MIRROR ADJUST OVERHEAD CONTROL PANEL CONTROL MODULE PARK OFF RED WIRE RED/YEL WIRE RIGHT HEADLAMP UNIT WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

17 18 12 13 CAN-B L CAN-B H CAN-B L CAN-B H 2 1 CAN L CAN H 4 5 CAN L CAN H 6 5 2 4 3 1 R LO BEAM R HI BEAM R FOG L LO BEAM L HI BEAM L FOG 9 10 CAN-B L CAN-B H AMBIENT LIGHT, ROAD AHEAD SENSORS AUTOMATIC LIGHT SWITCH DAYLIGHT SENSOR (FRONT OF HEADLINER) BLK WIRE BLK/GRN WIRE BLK/PNK WIRE BLU WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM DIAG EXTERIOR LAMPS FOG LAMP FOG LAMP IND FRONT AXLE SENSOR FRONT PRE-FUSE BOX (RIGHT REAR OF ENGINE COMPT) FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 4 FUSE 50 FUSE 51 FUSE 62 FUSE 63 GRN WIRE GRN/BLK WIRE GRN/PNK WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/YEL WIRE HEAD AUTO HEADLAMP RANGE ADJUSTMENT MOTOR HEADLAMP WASH HIGH BEAM INDICATOR HIGH XENON BEAM XENON BEAM HOT AT ALL TIMES HOT IN RUN OR START IN OUT INSTRUMENT CLUSTER LAMP SWITCH MODULE LEFT FRONT FOG LAMP LEFT HEADLAMP UNIT LEFT RIGHT MIRROR FOLD- MIRROR SELECT MIRROR ADJUST OVERHEAD CONTROL PANEL CONTROL MODULE PARK OFF REAR AXLE SENSOR RED WIRE RED/GRN WIRE RED/YEL WIRE RIGHT FRONT FOG LAMP RIGHT HEADLAMP UNIT WHT WIRE WHT/BLK WIRE WHT/RED WIRE XENON CONTROL MODULE XENON IGNITION MODULE XENON CONTROL MODULE XENON IGNITION MODULE HIGH XENON BEAM XENON BEAM YEL WIRE YEL/BLK WIRE YEL/WHT WIRE

AAC PUSHBUTTON CONTROL MODULE BLK WIRE BLU WIRE BRN WIRE BRN/GRY WIRE BRN/RED WIRE CAN B L CAN B H CAN-B H CAN-B L 30 31 COMPUTER DATA LINES SYSTEM FRONT PRE-FUSE BOX (RIGHT REAR OF ENGINE COMPT) FUSE 10 FUSE 2 FUSE 41 HEATED REAR WINDOW HOT AT ALL TIMES INTERIOR FUSE BOX (UNDER LEFT END OF DASH) REAR WINDOW DEFROSTER RELAY REAR WINDOW DEFROSTER SWITCH RED WIRE RED/BLU WIRE

1 2 3 4 5 6 7 8 9 10 11 12 CAN-B L CAN-B H FUEL LVL 1 2 CAN-B H CAN-B L 2 3 4 1 KPR 87 15 NA 4 5 CAN-B L CAN-B H ANTI-THEFT SYSTEM BLK WIRE BLK/BRN WIRE BLK/PNK WIRE BLK/RED WIRE BLK/YEL WIRE BLU/BLK WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/PNK WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CIRCUIT COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM ENGINE CONTROLS SYSTEM CRASH DEFOGGER SYSTEM DOOR LOCKS SYSTEM ENGINE CONTROLS SYSTEM ENGINE CONTROLS SYSTEM DOOR LOCKS SYSTEM DOOR LOCKS SYSTEM DOOR LOCKS SYSTEM ENGINE CONTROLS SYSTEM MEMORY SYSTEM FRONT PRE-FUSE BOX (RIGHT REAR OF ENGINE COMPT) FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUEL PUMP RELAY FUSE 10 FUSE 12 FUSE 13 FUSE 14 FUSE 16 FUSE 17 FUSE 2 FUSE 2 FUSE 1 FUSE 20 FUSE 4 FUSE 8 GRN WIRE GRN/GRY WIRE HOT AT ALL TIMES INTERIOR SOCKET KPR NA LF DOOR FUEL LVL CRASH FUEL LVL LR DOOR RF DOOR RR DOOR PASSIVE RESTRAINTS SYSTEM PASSIVE RESTRAINTS SYSTEM PNK LF COMFORT RF COMFORT WIRE PNK/RED WIRE POWER WINDOWS SYSTEM REAR DEFOGGER RELAY REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK) RED WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RELAY SEATS SYSTEM SEATS SYSTEM WIPER/ WASHER SYSTEM SIG SIG TELEPHONE WIRING VIO/BLU WIRE