Mercedes-Benz C-class W203/S203/CL203 facelift (2004-2008) blu/blk Wiring diagrams

BA MV- UM 1 SS RF SS RF BLA SS LR SS LR BRK WEAR BLA BLK/GRN WIRE BLK/GRY WIRE BLK/RED WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BRAKE FLUID INDICATOR SWITCH BRAKE FLUID, PARKING BRAKE WARNING LAMP BRK WEAR BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CAN B H CAN B L CAN C H CAN C L CAN-C H VSS RF SPS SOL VSS LF CAN-C L 31 BA MV+ COMPUTER DATA LINES SYSTEM DIAPHRAGM TRAVEL SENSOR ESP, BAS CONTROL MODULE (AT LEFT FRONT OF ENGINE COMPT) FRONT AXLE INLET SOLENOID VALVE FRONT AXLE SWITCH- OVER SOLENOID VALVE FRONT SAM CONTROL MODULE W/ FUSE/ RELAY MODULE FUSE 56 FUSE 59 FUSE 60 GRN WIRE GRN/BLU WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE HIGH PRESSURE, RETURN PUMP MOTOR HOT AT ALL TIMES HOT W/ CIRCUIT 87 RELAY,CHASSIS INSTRUMENT CLUSTER LEFT FRONT AXLE SOLENOID VALVE (HOLD) LEFT FRONT AXLE SOLENOID VALVE (RELEASE) LEFT FRONT WHEEL SPEED SENSOR LEFT REAR AXLE SOLENOID VALVE (HOLD) LEFT REAR AXLE SOLENOID VALVE (RELEASE) LEFT REAR WHEEL SPEED SENSOR MPS UZ MP- NCA WIRE REAR AXLE INLET SOLENOID VALVE REAR AXLE SWITCH- OVER SOLENOID VALVE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RELEASE SWITCH RIGHT FRONT AXLE SOLENOID VALVE (HOLD) RIGHT FRONT AXLE SOLENOID VALVE (RELEASE) RIGHT FRONT BRAKE PAD CONTACT SENSOR RIGHT FRONT WHEEL SPEED SENSOR RIGHT REAR AXLE SOLENOID VALVE (HOLD) RIGHT REAR AXLE SOLENOID VALVE (RELEASE) RIGHT REAR BRAKE PAD CONTACT SENSOR RIGHT REAR WHEEL SPEED SENSOR SIGNAL SOLENOID VALVE SPS SOLENOID VALVE (UNDER VEHICLE, ON STEERING RACK) SS RR SS RR SPS SOL SS LF SS LF 31 TURN RATE, LATERAL ACCELERATION SENSOR (AT FRONT OF CARGO AREA) VALID FOR SPS(PML) VIO/BLU WIRE VIO/WHT WIRE WHT GRN/ WIRE WHT/BLU WIRE YEL/BLU WIRE YEL/GRY WIRE YEL/RED WIRE YEL/WHT WIRE

1 2 3 31 MULTIPLEX DATA OUT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 CAN-B H CAN-B L 9 10 COMPUTER DATA LINES SYSTEM CAN-B L CAN-B H A/C COMPRESSOR (LEFT FRONT OF ENGINE COMPT) AAC PUSHBUTTON CONTROL MODULE AIR LEFT HUMIDITY DEFROSTER SENSOR VENT FLAP ACTUATOR MOTOR BLK/BRN WIRE BLK/RED WIRE BLOWER MOTOR BLU WIRE BLU/BLK WIRE BLU/GRN 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 CIRCUIT 87 RELAY ENERGIZED FUSE 54 COMPUTER DATA LINES SYSTEM COOLANT CIRCULATION PUMP (W/ RESIDUAL ENGINE HEAT UTILIZATION SYSTEM) ELECTRIC SUCTION FAN ENGINE, A/C WITH INTEGRATED CONTROL ENERGIZED FUSE 51 FRESH LEFT, RIGHT AIR DEFROSTER FLAPS ACTUATOR FLAPS ACTUATOR FRONT PRE-FUSE BOX (AT RIGHT REAR OF ENGINE COMPT) FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 30 FUSE 41 FUSE 5 GRN WIRE GRN/BLU WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/RED WIRE HEATING SYSTEMS RECIRCULATION UNIT HOT AT ALL TIMES IN-CAR TEMPERATURE SENSOR IN-CAR TEMPERATURE SENSOR FSN MOTOR INSTRUMENT CLUSTER SYSTEM INTERIOR FUSE BOX LEFT FOOTWELL FLAP ACTUATOR MOTOR LEFT RIGHT BLENDING BLENDING AIR FLAP AIR FLAP ACTUATOR ACTUATOR LEFT RIGHT FRESH FOOTWELL AIR FLAP FLAP ACTUATOR ACTUATOR MOTOR LEFT, RIGHT FOOTWELL FLAPS ACTUATOR ME-SFI CONTROL MODULE NCA WIRE OVERHEAD CONTROL PANEL CONTROL MODULE PURGE CONTROL VALVE (LEFT REAR CORNER OF ENGINE COMPT) REAR BLOWER ELECTRONIC SELECTOR WHEEL REAR BLOWER MOTOR REAR BLOWER MOTOR CONTROL MODULE (ON REAR BLOWER MOTOR ASSEMBLY) RED WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT DEFROSTER VENT FLAP ACTUATOR MOTOR RIGHT FRESH AIR FLAP ACTUATOR RV EGS VIO WIRE W/ COMFORT AAC W/ OUTSIDE TEMPERATURE INDICATOR WHT/PNK WIRE WHT/VIO WIRE

1 2 CAN B L CAN B H 1 2 MOST 1 2 3 4 5 6 7 8 9 10 11 12 13 IN OUT 30 WAKE UP 4 5 CAN L CAN H BLK WIRE BLU/BLK WIRE BRN WIRE BRN/GRN WIRE BRN/ORG WIRE BRN/PNK WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE COMMAND OPERATING, DISPLAY, CONTROL MODULE COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM EMERGENCY CALL SYSTEM CONTROL UNIT (W/O SOUND SYSTEM) (FRONT OF CARGO AREA) FAN MOTOR 1 WALKMAN SEPERATION POINT FAN MOTOR 2 FRONT PRE-FUSE BOX (AT RIGHT REAR OF ENGINE COMPT) FRONT SAM CONTROL UNIT, WITH FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 2 FUSE 4 GPS 1 2 3 4 5 6 7 8 GRN WIRE HOT AT ALL TIMES MUTE NCA WIRE ORG/ WIRE PNK WIRE RADIO ADDITIONAL FAN (FRONT OF CENTER CONSOLE) REAR SAM CONTROL UNIT WITH FUSE, RELAY MODULE (AT LEFT SIDE OF TRUNK) RED WIRE RED/BLU WIRE RED/GRY WIRE RED/YEL WIRE SCREEN ANTENNA AMPLIFIER MODULE 1 (WAGON) (LEFT REAR OF ROOF) SCREEN ANTENNA AMPLIFIER MODULE 2 (TOP LEFT OF TAILGATE) WAGON COUPE, SEDAN WAKE UP SIGNAL CONNECTOR WHT WIRE YEL WIRE YEL/BLK WIRE ZF 1 2 3 4 5 6 7 8 9 10 11 12

1 2 MOST IN MOST OUT BLU/BLK WIRE CD CHANGER (IN GLOVE COMPARTMENT) MOST ORG/ WIRE RADIO (OR) COMAND OPERATING, DISPLAY AND CONTROL MODULE SDAR CONTROL UNIT (AT RIGHT REAR OF TRUNK) SOUND AMPLIFIER WAKE UP SIGNAL CONNECTOR WAKE-UP

1 2 7 9 3 CAN L CAN H L FUEL (-) R FUEL 40 41 CAN L CAN H 41 54 CAN H CAN L 6 7 CAN L CAN H ABS MIL AIR BAG INDICATOR, WARNING LAMP AREA) BLK/BRN WIRE BLU/BLK WIRE BLU/YEL WIRE BRAKE FLUID INDICATOR SWITCH (IN BRAKE FLUID RESERVOIR) BRAKE FLUID, PARKING BRAKE WARNING LAMP BRK FLUID BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/WHT WIRE CAN L CAN H DRVR BELT CAN-L CAN-H COMPUTER DATA LINES SYSTEM DRIVER SEAT BELT BUCKLE RESTRAINT SYSTEMS SWITCH DTR WARNING LAMP ELECTRONIC SELECTOR LEVER MODULE CONTROL MODULE (AT BASE OF GEAR ELECTRONIC SPEEDOMETER ENGINE DIAGNOSIS MALFUNTION INDICATOR LAMP ESP WARNING LAMP ETC (EGS) CONTROL MODULE (UNDER RIGHT SIDE OF DASH) FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUEL LEVEL GAUGE W/ RESERVE INDICATOR FUSE 42 FUSE 51 GEAR DISPLAY (PRNDL) GRN WIRE GRN/WHT WIRE GRY/GRN WIRE HIGH BEAM INDICATOR LAMP HOT AT ALL TIMES HOT W/ CIRCUIT ILLUMINATION ILLUMINATION RHEOSTAT INSTRUMENT CLUSTER INTERIOR FUSE BOX (LEFT END OF DASH) LEFT FUEL LEVEL SENSOR (UNDER LEFT REAR SEAT) LEFT TURN INDICATOR ME-SFI CONTROL MODULE (AT LEFT REAR OF ENGINE COMPT) MULTIFUNCTION DISPLAY NCA WIRE PARKING BRAKE INDICATOR SWITCH (ON PARKING BRAKE SUPPORT BRAKET) PRK BRK REAR SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK CARGO, RED/YEL WIRE RESTRAINT SYSTEMS CONTROL MODULE (UNDER FRONT OF CENTER CONSOLE) RIGHT FUEL LEVEL SENSOR (UNDER RIGHT REAR SEAT) RIGHT TURN INDICATOR SEAT BELT REMINDER LAMP SHIFT ASSEMBLY) SOUNDER- TACHOMETER TRIP ODOMETER RESET BUTTON WARNING BUZZER

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/GRN 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 (SEDAN, WAGON) (LEFT SIDE OF TRUNK) 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 FRONT PRE-FUSE BOX (AT 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 2 FUSE 2 FUSE 1 FUSE 4 FUSE 7 HOT AT ALL TIMES HOT AT ALL TIMES FUSE 18 HOT AT ALL TIMES FUSE 19 HOT AT ALL TIMES FUSE 17 HOT AT ALL TIMES FUSE 20 HOT AT ALL TIMES FUSE 8 KPR MEMORY, ENGINE SEATS CONTROLS SYSTEMS SYSTEM NA LF DOOR FUEL LVL CRASH FUEL LVL LR DOOR RF DOOR RR DOOR PNK/RED WIRE POWER DISTRIBUTION SYSTEM POWER WINDOWS SYSTEM REAR DEFOGGER RELAY REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK/CARGO AREA) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RELAY SDAR CONTROL UNIT (AT RIGHT REAR OF TRUNK) SEATS SYSTEM SIG TO REVERSE 1 RELAY (DIAGRAM 2 OF 2) VIO/BLU WIRE WIPER/ SEATS SYSTEM WASHER SYSTEM

1 2 MOST MOST IN MOST OUT BLU/BLK WIRE BRN WIRE EARLY PRODUCTION LATE PRODUCTION GRN WIRE GRY WIRE HANDS-FREE SYSTEM MICROPHONE GROUP MIC 2+ MIC GND NCA WIRE ORG/ WIRE PNK MIC 1 MIC 3 MIC 4 WIRE PNK WIRE REAR SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK/ CARGO AREA) RED/BLK WIRE SHIELD VIO WIRE VOICE CONTROL SYSTEM CONTROL MODULE (WAGON: AT FRONT OF CARGO AREA) WAKE UP 31

AIR INJECTION VALVE AIR PUMP BLK/BLU WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/PNK WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/ORG WIRE BRN/YEL WIRE COOLANT TEMPERATURE SENSOR (LEFT REAR OF ENGINE) CRANKSHAFT HALL SENSOR (AT LEFT REAR OF ENGINE) DOWNSTREAM TWC (KAT) GRN WIRE GRN/WHT WIRE GRY WIRE GRY/YEL WIRE LEFT INTAKE MANIFOLD TUMBLE FLAP POSITION SENSOR (LEFT REAR OF ENGINE COMPT) LEFT KNOCK SENSOR 2 (BETWEEN CYLINDER BANKS) NCA WIRE ORG/ WIRE PNK/BLK WIRE PNK/BLU WIRE PNK/GRN WIRE PNK/GRY WIRE PNK/VIO WIRE PNK/YEL WIRE PRESSURE SENSOR RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT KNOCK SENSOR 1 (BETWEEN CYLINDER BANKS) THROTTLE VALVE ACTUATOR UPSTREAM TWC (KAT) VIO WIRE VIO/BRN WIRE WHT WIRE

A_T_DCM A_T_DCP A_T_ECO BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/PNK WIRE BLK/RED WIRE BLK/VIO WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/PNK WIRE BLU/VIO WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/ORG WIRE BRN/VIO WIRE BRN/YEL WIRE DOWNSTREAM TWC (KAT) D_S_KW OUT ENGINE SEPARATION E_A_DS E_F_KWGA E_F_KWGB E_S_FSOEL GRN WIRE GRN/BLU WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/ORG WIRE GRY/WHT WIRE GRY/YEL WIRE HEATING SYSTEM SHUTOFF VALVE HFM HOT FILM MAF SENSOR INTAKE MANIFOLD TUMBLE FLAP SWITCHOVER VALVE LEFT OIL LEVEL CAMSHAFT SWITCH EXHAUST (LEFT SIDE SOLENOID OF OIL PAN) ME-SFI CONTROL MODULE (AT LEFT REAR OF ENGINE COMPT) NCA WIRE ORG/ WIRE PNK WIRE PNK/BLK WIRE PNK/BLU WIRE PNK/GRN WIRE PNK/GRY WIRE PNK/VIO WIRE PNK/YEL WIRE POWER STEERING PUMP PRESSURE REGULATOR VALVE RADIO INTERFERENCE SUPPRESSION CAPACITOR 2 RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE THREE DISK THERMOSTAT VALVE UPSTREAM TWC (KAT) VARIABLE INTAKE MANIFOLD SWITCHOVER VALVE VIO WIRE VIO/BLU WIRE VIO/BRN WIRE VIO/GRN WIRE VIO/GRY WIRE VIO/YEL WIRE WHT WIRE YEL/GRY WIRE YEL/WHT WIRE

A_S_DK A_S_HAV A_S_SLV A_T_KWTHS A_U_UIP BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/VIO WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/VIO WIRE BRN/YEL WIRE B_D_LIN EV 2 EV 3 EV 4 EV 1 EV 5 EV 6 FUEL INJECTORS GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/RED WIRE GRN/VIO WIRE GRN/YEL WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/RED WIRE GRY/WHT WIRE GRY/YEL WIRE HFM LEFT CAMSHAFT INTAKE SOLENOID LEFT EXHAUST CAMSHAFT HALL SENSOR (FRONT OF RIGHT CYLINDER BANK) LEFT INTAKE CAMSHAFT HALL SENSOR (FRONT OF LEFT CYLINDER BANK) ME-SFI CONTROL MODULE (AT LEFT REAR OF ENGINE COMPT) M_R_IPM M_R_LSIK E_A_LSHK ORG/ WIRE PNK/BLK WIRE RADIO INTERFERENCE SUPPRESSION CAPACITOR 1 RED WIRE RED/BLK WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE RIGHT CAMSHAFT EXHAUST SOLENOID RIGHT CAMSHAFT INTAKE SOLENOID RIGHT INTAKE CAMSHAFT HALL SENSOR SPARK PLUGS STARTING/ CHARGING SYSTEM VIO WIRE VIO/BLK WIRE VIO/BLU WIRE VIO/BRN WIRE VIO/GRN WIRE VIO/GRY WIRE VIO/RED WIRE VIO/YEL WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/RED WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/RED WIRE YEL/WHT WIRE