Mercedes-Benz C-class AMG W203/S203/CL203 facelift (2004-2007) gry/red 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

17 1 15 6 MLS BS CAN-B L CAN-B H 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 7 3 11 10 2 8 RF TURN RF PARK RF MARK LF MARK LF TURN LF PARK 7 6 CAN-B L CAN-B H BLK WIRE BLK/GRN WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/RED WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM ESP, BAS CONTROL MODULE (LEFT SIDE OF ENGINE COMPT) EXTERIOR LAMPS FOG LAMP FOG LAMP IND FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 50 FUSE 56 FUSE 62 FUSE 63 GRN WIRE GRN/BLK WIRE GRN/PNK WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/RED WIRE GRY/WHT WIRE GRY/YEL WIRE HEAD AUTO HEADLAMP WASH HOT AT ALL TIMES HOT IN RUN OR START HOT IN RUN, ACC OR START IN OUT INSTRUMENT CLUSTER LAMP SWITCH MODULE LEFT EXTERIOR MIRROR LEFT FRONT DOOR CONTROL MODULE LEFT FRONT SIDE MARKER LAMP RIGHT FRONT SIDE MARKER LAMP LEFT HEADLAMP UNIT LEFT RIGHT LEFT TURN IND MIRROR FOLD- MIRROR SELECT MIRROR ADJUST NCA WIRE PARK OFF PNK WIRE PNK/RED WIRE RED WIRE RED/VIO WIRE RIGHT EXTERIOR MIRROR RIGHT FRONT DOOR CONTROL MODULE RIGHT HEADLAMP UNIT RIGHT TURN IND SOUNDER- STAND/ PARK LAMP STAND/ PARK LAMP TURN LAMP STOPLAMP SWITCH (ON BRAKE PEDAL BRACKET) TURN TURN LAMP VIO WIRE VIO/BLU WIRE WHT WIRE 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

1 2 3 15 XENON DIAGNOS VSS LF SIG OUT 1 2 3 4 5 6 7 8 9 10 DIAG 1 2 3 4 5 6 7 TEMP R PRESS R PRESS FAN SRA R PRESS 1 2 3 4 5 6 L FOG R FOG L HI L LO R HI R LO 1 2 3 CRASH SIG 1 2 PNK DIAG WIRE A/C SYSTEM A/C SYSTEM CHARGING SYSTEM ENGINE CONTROLS SYSTEM ANTI-LOCK BRAKES SYSTEM BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/PNK WIRE BLK/WHT WIRE BLU WIRE BLU/GRN WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE CAN-B L CAN-B H BACKUP COMPUTER DATA LINES SYSTEM CONTROL MODULE BOX BLOWER MOTOR COOL LVL COOLING FANS SYSTEM WIPER/WASHER SYSTEM A/C SYSTEM CPP DIAG DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) DI CONTROL MODULE DIAG DLC DLC ECM ECM DLC EMERGENCY CALL SYSTEM CONTROL UNIT (FRONT OF CARGO AREA) ENGINE CONTROLS SYSTEM ENGINE CONTROLS SYSTEM TRANSMISSION SYSTEM EXTERIOR LIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM WARNING SYSTEMS WARNING SYSTEMS EXTERIOR LIGHTS SYSTEM FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/GRY WIRE GRN/PNK WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/RED WIRE GRY/VIO WIRE GRY/WHT WIRE GRY/YEL WIRE HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM (XENON) LAMP SW LAMP SW LAMP SW LAMP SW LAMP SW LF MARK RF MARK BRK LVL PARK BRK MOD COOL MODELS PNK WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE RF TURN LF PARK TELEPHONE WIRING TRANSMISSION SYSTEM TRANSMISSION SYSTEM COMPUTER DATA LINES SYSTEM VIO WIRE VIO/YEL WIRE WASH LVL WHT WIRE WHT/BLK WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/PNK WIRE WIPER/WASHER SYSTEM YEL WIRE YEL/BLK WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 LR FOG LMP RR PARK RR MARK LR MARK 1 2 3 4 5 RADIO TRK LAMP RHR REL TRK LAMP COMMON 1 2 REAR BLIND REAR BLIND AMP MOD AMP MOD BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/GRN WIRE BRN WIRE BRN/YEL WIRE COUPE, WAGON ONLY DOOR LOCKS SYSTEM DOOR LOCKS SYSTEM DOOR LOCKS SYSTEM FROM FUSE 7 (DIAGRAM 1 OF 2) FUEL FILTER CAP POLARITY CHANGE 1 RELAY FUEL FILTER CAP POLARITY CHANGE 2 RELAY FUSE 15 GRN WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/RED WIRE GRY/VIO WIRE GRY/YEL WIRE HOT AT ALL TIMES FUSE 3 HOT AT ALL TIMES FUSE 8 HOT AT ALL TIMES FUSE 9 INTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM LOCK PAWL TRUNK CL CHMSL R LICENSE L LICENSE R WIPER LR BACK LR TURN RR STOP RR BACK RR TURN LR STOP LR PARK MODELS ONLY NCA WIRE NECK-PRO HEAD RESTRAINT TRIGGERING DEVICE OVERHEAD CONTROL PANEL CONTROL MODULE POWER WINDOWS SYSTEM POWER WINDOWS SYSTEM REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK) RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/YEL WIRE RHR (KAF) RELEASE VALVE (LEFT SIDE OF TRUNK) SOUND SYSTEMS INTERIOR LIGHTS SYSTEM SOUND SYSTEMS SOUND SYSTEMS SOUND SYSTEMS TRUNK EMERG TRUNK EXT LOCK PAWL TRUNK SW TRUNK EMERG VIO/BLU WIRE WHT WIRE YEL WIRE YEL/BLU WIRE YEL/GRN WIRE

ACTIVATED CHARCOAL CANISTER SHUTOFF VALVE (ABOVE RIGHT REAR WHEEL WELL) ADJUSTABLE CAMSHAFT TIMING SENSOR (RIGHT FRONT OF ENGINE) BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/YEL WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM ENGINE, A/C ELECTRIC SUCTION FAN WITH INTEGRATED CONTROL (FRONT OF ENG) FUEL LVL FUEL PUMP ASSEMBLY FUEL PUMP LEFT FUEL LEVEL SENSOR FUEL PUMP RELAY FUSE 4 GRN/BLK WIRE GRN/BLU WIRE GRY/BRN WIRE GRY/RED WIRE GRY/WHT WIRE INTAKE CAMSHAFT SOLENOID (LEFT FRONT OF ENG) NCA WIRE OXYGEN SENSOR 1 (UPSTREAM TWC) (AT RIGHT REAR OF ENGINE COMPT) OXYGEN SENSOR 2 (DOWNSTREAM TWC) (RIGHT REAR OF ENG COMPT) PURGE CONTROL VALVE (LEFT REAR CORNER OF ENGINE COMPT) REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK) RED WIRE RED/GRN WIRE RIGHT FUEL LEVEL SENSOR VIO/BLU WIRE

2003-2004, 2005 EARLY PRODUCTION 2005 LATE PRODUCTION, 2006 MODELS AIR FLAP 1 AIR FLAP SIG AIR PUMP SW AIR PUMP SWITCH OVER SENSOR AMBIENT SIG BLK WIRE BLK/BRN WIRE BLK/YEL WIRE BLU WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRY WIRE BRN/VIO WIRE BRN/WHT WIRE CAMSHAFT SIG EA/CC/ISC ECT SIG ENGINE CONTROL MODULE (ME-SFI) (LEFT REAR OF ENGINE COMPT) GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/RED WIRE GRY/WHT WIRE GRY/YEL WIRE IAT SIG INTAKE AIR TEMPERATURE SENSOR OIL LEVEL SWITCH (LEFT REAR OF ENG COMPT) OIL LVL OUT OIL LVL SIG OIL SENSOR (OIL LEVEL, TEMPER- ATURE, QUALITY) (LOWER LEFT SIDE OF ENGINE) RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE VIO WIRE WHT WIRE WHT/YEL WIRE YEL WIRE YEL/BLU WIRE

ALTITUDE SENSOR (TOP OF ENGINE) BLK WIRE BLK/YEL WIRE BLU WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE CAMSHAFT SIG PRESSURE SENS SIG MAF GND EA/CC/ISC POT 1 HOT FILM MAF SIG EA/CC/ISC POT 2 ENG SENS GND ENGINE CONTROL MODULE (ME-SFI) (LEFT REAR OF ENGINE COMPT) FUEL INJECTORS GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/WHT WIRE GRN/YEL WIRE GRY BLK/ WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/RED WIRE GRY/WHT WIRE IGNITION COILS INJ 3 SIG OUT INJ 2 SIG OUT INJ 1 SIG OUT INJ 4 SIG OUT INTAKE CAMSHAFT ENG SENS GND KNOCK SENS SIG KNOCK SENS SIG AIR FLAP SIG MAF SENS PWR OUT OUTPUT LO SIDE OUTPUT HI OUTSIDE CKP SIG HI CKP SIG LO NCA WIRE PNK EXHT CAMSHAFT SIG WIRE PNK WIRE PRESSURE SENSOR (RIGHT FRONT OF ENGINE) RADIO INTERFERENCE SUPPRESSION CAPACITOR (TOP OF ENGINE) RED/BLU WIRE RED/GRN WIRE RED/YEL WIRE SIG OUTPUT LO SIDE SIG OUTPUT HI SIDE GEN SIG STARTING/ CHARGING SYSTEM TO SPARK PLUGS VIO WIRE WHT/BLU WIRE WHT/YEL WIRE YEL WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/WHT WIRE

ACCELERATOR PEDAL SENSOR (ABOVE PEDAL ASSEMBLY) ACTIVATED CHARCOAL FILTER SHUTOFF VALVE (ABOVE RIGHT REAR WHEELWELL) APS VLV VIMS VLV BLK/RED WIRE BLK/WHT WIRE BLU WIRE BLU/BRN WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE CLUTCH PEDAL SWITCH FUEL TANK PRESSURE SENSOR (UNDER LEFT REAR SEAT) COMPUTER DATA LINES SYSTEM COOLING FANS SYSTEM DATA LINK CONNECTOR DIAG EGR ENGINE CONTROL MODULE (ME-SFI) (LEFT REAR OF ENGINE COMPT) FTP - CAN L FTP SIG FUEL INJECTORS FUEL PUMP ACF VLV AIR PUMP FAN GEN GENERATOR GRN WIRE GRN/BLU WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/RED WIRE GRY/VIO WIRE GRY/WHT WIRE GRY/YEL WIRE INJ 5 INJ 2 INJ 6 INJ 3 KICKDOWN SWITCH (INCORPORATED W/ ACCELERATOR PEDAL ASSEMBLY) KICKDWN NCA WIRE P/N RED/BLU WIRE RED/GRN WIRE TNA VARIABLE INTAKE MANIFOLD SWITCHOVER VALVE VIO/GRN WIRE VIO/WHT WIRE VIO/YEL WIRE YEL WIRE YEL/BRN WIRE