Mercedes-Benz C-class AMG W203/S203/CL203 facelift (2004-2007) computer data lines system Wiring diagrams

1 2 3 31 30 WAKE 1 2 CAN B L CAN B H 2 1 30 DIAG 4 3 2 30 FZU CONTROL 4 5 CAN L CAN H 6 29 23 DIAG WAKE MUTE A-ST FZU 30 31 AM/FM AM/FM AMFM CLEAR CLEAR ZF ZF AMPLIFIER MODULE 1 (SCREEN ANTENNA) AMPLIFIER MODULE 2 BLK WIRE BLU/BLK WIRE BRN WIRE BRN/RED WIRE CD CHANGER CLEAR CLEAR CLEAR CLEAR AM/FM AM/FM CLEAR GPS GPS COMMAND OPERATING, DISPLAY, CONTROL MODULE COMPUTER DATA LINES SYSTEM CTEL INTERFACE (IF EQUIPPED) DIAG MUTE 30 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 GPS GPS ANTENNA (IF EQUIPPED) GRN WIRE GRN/BLK WIRE HOT AT ALL TIMES NCA WIRE OPTIC CABLE CONNECTOR ORG/ WIRE REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/YEL WIRE SDAR CONTROL UNIT (RIGHT REAR OF TRUNK) TELE AID TRANSMITTER/ RECEIVER (FRONT OF SPARE TIRE WELL) VOICE CONTROL MODULE (IF EQUIPPED) WAKE WAKE UP SIGNAL CONNECTOR WAKE-UP YEL/BLK WIRE ZF ZF

1-2, 3-4, 5-6, 7-8) 3.0 BLK WIRE BLU/BLK WIRE BRN WIRE BRN/GRN (OR BRN/ORG) WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/ORG WIRE BRN/PNK WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE CAN-B L CAN-B H WAKE UP CENTER COCKPIT SPEAKER COMMAND OPERATING, DISPLAY, CONTROL MODULE COMPUTER DATA LINES SYSTEM COUPE GRN WIRE GRY WIRE HOT AT ALL TIMES INTERIOR FUSE BOX (UNDER LEFT END OF DASH) FUSE 26 LEFT FRONT DOOR MIRROR SPEAKER LEFT FRONT DOOR SPEAKER LEFT REAR DOOR SPEAKER NCA WIRE NF-L SHLD CLEAR NF-R GND ORG/ WIRE PNK WIRE RED/VIO WIRE RIGHT FRONT DOOR MIRROR SPEAKER RIGHT FRONT DOOR MIRROR SPEAKER RIGHT FRONT DOOR SPEAKER RIGHT FRONT DOOR SPEAKER RIGHT REAR DOOR SPEAKER SEDAN SOUND AMPLIFIER SOUND AMPLIFIER MICROPHONE SUBWOOFER LOUDSPEAKER VIO WIRE W/O AMP W/O AMPLIFIER WAGON WAKE 31 WALKMAN SEPARATION POINT WHT WIRE YEL WIRE

BLU/BLK WIRE CD CHANGER COMMAND OPERATING, DISPLAY, CONTROL UNIT COMPUTER DATA LINES SYSTEM DIAG GRN/BLK WIRE OPTICS CONNECTOR (UNDER RIGHT REAR SEAT) ORG/ WIRE RADIO SDARS CONTROL UNIT SOUND AMPLIFIER TELEPHONE INTERFACE TRANSMITTER/RECEIVER VOICE CONTROL SYSTEM CONTROL MODULE W/ COMMAND ACTUATION CIRCUIT W/ RADIO CIRCUIT WAKE UP SIGNAL CONNECTOR (INSIDE INTERIOR OF RIGHT FOOTWELL) WAKE-UP

#1 #2 #3 #4 #5 #6 1 2 3 4 5 6 7 8 9 10 11 12 13 14 (+) (+) (+) (-) (-) (-) 1 2 3 6 7 8 ESA SW ESA SW ESA SW ESA SW ESA SW ESA SW 2 1 CAN-B H CAN-B L 2 MEMORY LOCATION 6 7 5 CAN-B H CAN-B L 30 BACKREST BLK WIRE BLK/BLU WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BRN WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/YEL WIRE CAN B L CAN-B H 30 COMPUTER DATA LINES SYSTEM COUPE DRIVER FRONT SEAT ADJUSTMENT CONTROL MODULE (UNDER SEAT) DRIVER SEAT BACKREST ADJUSTMENT MOTOR DRIVER SEAT FORWARD/BACK ADJUSTMENT MOTOR DRIVER SEAT FRONT UP/DOWN ADJUSTMENT MOTOR DRIVER SEAT HEAD RESTRAINT RAISE/LOWER ADJUSTMENT MOTOR DRIVER SEAT REAR UP/DOWN ADJUSTMENT MOTOR FRONT (RAISE/ LOWER) FRONT PRE-FUSE BOX (RIGHT REAR OF ENGINE COMPT) FUSE 2 FUSE 21 FUSE 29 GRY/BLK WIRE GRY/GRN WIRE GRY/YEL WIRE HEAD RESTRAINT (RAISE/ LOWER) HOT AT ALL TIMES INTERIOR FUSE BOX (UNDER LEFT END OF DASH) LEFT FRONT DOOR CONTROL MODULE LEFT FRONT DOOR ESA SWITCH GROUP MEMORY STORE REAR (RAISE/ LOWER) REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK) RED WIRE RED/WHT WIRE RED/YEL WIRE SEAT (FORWARD/ BACK) SEDAN WAGON STEERING COLUMN MEMORY CIRCUIT VIO WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE

12 11 CAN-B L CAN-B H 3 4 5 ILLUM CAN L CAN H 7 6 CAN-B L CAN-B H AUTOMATIC TRANSMISSION PROGRAM SELECTOR PUSHBUTTON BLK WIRE BLU WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/RED WIRE BRN/YEL WIRE CAN L CAN H ILLUM CENTER AIR OUTLET ILLUMINATION CLOCK- SPRING COMPUTER DATA LINES SYSTEM EXTERIOR LAMPS FOG LAMP FOG LAMP IND FRONT ASHTRAY ILLUMINATION FRONT CIGAR LIGHTER 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 HEADLAMP WASH HOT AT ALL TIMES HOT IN RUN OR START ILLUM ILLUMINATION ILLUMINATION RHEOSTAT IN OUT INSTRUMENT CLUSTER LAMP SWITCH MODULE LEFT AIR OUTLET ILLUMINATION LEFT REAR DOOR CONTROL MODULE LEFT REAR POWER WINDOW SWITCH LEFT RIGHT LOWER CONTROL FIELD CONTROL MODULE MB-INFO, BREAKDOWN ASSISTANCE BUTTON GROUP MIRROR FOLD- MIRROR SELECT MIRROR ADJUST NCA WIRE PARK HEAD OFF AUTO REAR BLOWER ELECTRONIC SELECTOR WHEEL RED WIRE RIGHT AIR OUTLET ILLUMINATION RIGHT FRONT DOOR CONTROL MODULE RIGHT FRONT POWER WINDOW SWITCH RIGHT REAR DOOR CONTROL MODULE RIGHT REAR POWER WINDOW SWITCH SOS PUSH BUTTON SWITCH STEERING WHEEL MULTI- FUNCTION SWITCHES (2001, 2002 EARLY PRODUCTION) UPPER CONTROL PANEL CONTROL MODULE YEL WIRE

1 2 3 6 7 8 ESA SW ESA SW ESA SW ESA SW ESA SW ESA SW 2 1 CAN L CAN H 2 MEMORY LOCATION 3 9 4 6 1 7 5 10 8 U/D MTR COMMON L/R MTR DIM DIM HEAT HEAT TURN TURN 3 9 4 7 5 10 8 U/D MTR COMMON L/R MTR HEAT HEAT TURN TURN 4 3 10 7 8 9 FOLD FOLD POS 2 (+) POS 1 (-) 4 5 CAN L CAN H 6 7 5 4 CAN-B H CAN-B L 30 31 BLK WIRE BLK/GRN WIRE BLK/RED WIRE BLK/YEL WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/GRY WIRE BRN/RED WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM EXTERIOR LAMPS FOG LAMP FOG LAMP IND FOLD-IN MOTOR FOLD-IN MOTOR 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 6 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 HEADLAMP WASH HEATING ELEMENT HEATING ELEMENT AUTO DIM HOT AT ALL TIMES HOT AT ALL TIMES HOT AT ALL TIMES HOT IN RUN OR START IN OUT INTERIOR FUSE BOX (UNDER LEFT END OF DASH) FUSE 22 FUSE 21 LAMP SWITCH MODULE LEFT EXTERIOR MIRROR LEFT FRONT DOOR CONTROL MODULE LEFT FRONT DOOR ESA SWITCH GROUP LEFT RIGHT MEMORY STORE MIRROR ADJUST MIRROR FOLD- MIRROR SELECT MOTORS, POSITION SENSORS (LEFT/RIGHT, UP/ DOWN) NCA WIRE PARK OFF AUTO PNK/BLK WIRE PNK/RED WIRE RED WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT EXTERIOR MIRROR RIGHT FRONT DOOR CONTROL MODULE TURN SIGNAL WHT WIRE YEL WIRE YEL/GRN WIRE YEL/WHT WIRE

#1 #2 #3 #4 #5 #6 1 2 3 4 5 6 7 8 9 10 11 12 13 14 (+) (+) (+) (-) (-) (-) 1 2 3 7 8 ESA SW ESA SW ESA SW ESA SW ESA SW 2 1 CAN-B H CAN-B L 2 MEMORY LOCATION 6 7 5 CAN-B H CAN-B L 30 BACKREST BLK WIRE BLK/BLU WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BRN WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/YEL WIRE CAN B L CAN-B H 30 COMPUTER DATA LINES SYSTEM COUPE FRONT (RAISE/ LOWER) FRONT PRE-FUSE BOX (RIGHT REAR OF ENGINE COMPT) FUSE 2 FUSE 22 FUSE 34 GRY WIRE HEAD RESTRAINT (RAISE/ LOWER) HOT AT ALL TIMES INTERIOR FUSE BOX (UNDER LEFT END OF DASH) MEMORY STORE PASSENGER FRONT SEAT ADJUSTMENT CONTROL MODULE (UNDER SEAT) PASSENGER SEAT BACKREST ADJUSTMENT MOTOR PASSENGER SEAT FORWARD/BACK ADJUSTMENT MOTOR PASSENGER SEAT FRONT UP/DOWN ADJUSTMENT MOTOR PASSENGER SEAT HEAD RESTRAINT RAISE/LOWER ADJUSTMENT MOTOR PASSENGER SEAT REAR UP/DOWN ADJUSTMENT MOTOR REAR (RAISE/ LOWER) REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK) RED WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT DOOR CONTROL MODULE RIGHT FRONT DOOR ESA SWITCH GROUP SEAT (FORWARD/ BACK) SEDAN WAGON VIO WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE

1 2 9 10 31 30 CAN L CAN H 17 18 12 13 CAN-B L CAN-B H CAN-B L CAN-B H 2 3 FUEL CAP FUEL CAP 3 4 CAN-B L CAN-B H 4 5 CAN L CAN H BLU/GRN WIRE BLU/RED WIRE BRN WIRE BRN/BLU WIRE BRN/GRY WIRE BRN/PNK WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM COUPE, SEDAN DISPLAY FRONT PRE-FUSE BOX (RIGHT REAR OF ENGINE COMPT) FUEL FILLER CAP CENTRAL LOCKING MOTOR FUSE 2 FUSE 4 GRN WIRE GRN/WHT WIRE GRN/YEL WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER INTERIOR CENTRAL LOCKING SWITCH LEFT FRONT DOOR CONTACT SWITCH LEFT REAR DOOR CONTACT SWITCH (SEDAN, WAGON) LOCK PAWL ROTARY TUMBLER SWITCH (COUPE, SEDAN) 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 RIGHT FRONT DOOR CONTACT SWITCH RIGHT REAR DOOR CONTACT SWITCH (SEDAN, WAGON) ROOF DRIVE SYSTEM SEDAN WAGON SEDAN, COUPE TRUNK LID CENTRAL LOCKING MOTOR TRUNK LID CONTACT SWITCH TRUNK LID EMERGENCY RELEASE SWITCH TRUNK LID EXTERNAL OPERATION SWITCH UPPER CONTROL PANEL CONTROL MODULE VIO/BLU WIRE WHT WIRE YEL WIRE YEL/BLU WIRE YEL/GRN WIRE

11 12 CAN-B H CAN-B L 11 15 CAN-B H CAN-B L 2 3 DOOR MOTOR DOOR MOTOR 33 34 36 37 42 43 45 46 SS RF SS RF SS LR SS LR SS RR SS RR SS LF SS LF 6 7 5 4 CAN-B H CAN-B L 30 31 8 6 7 3 2 IR REC IR REC IR REC DOOR MOTOR DOOR MOTOR BLK WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/YEL WIRE BRN WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM ESP, BAS CONTROL MODULE FUSE 21 FUSE 22 FUSE 33 GRN WIRE GRN/WHT WIRE HOT AT ALL TIMES INTERIOR FUSE BOX (UNDER LEFT END OF DASH) FUSE 32 LEFT FRONT DOOR CENTRAL LOCKING MOTOR LEFT FRONT DOOR CONTROL MODULE LEFT FRONT IR RECEIVER LEFT REAR DOOR CENTRAL LOCKING MOTOR LEFT REAR DOOR CONTROL MODULE (SEDAN, WAGON) RED WIRE RED/BLK WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FRONT DOOR CENTRAL LOCKING MOTOR RIGHT FRONT DOOR CONTROL MODULE RIGHT FRONT IR RECEIVER RIGHT REAR DOOR CENTRAL LOCKING MOTOR RIGHT REAR DOOR CONTROL MODULE (SEDAN, WAGON) TO WHEEL SPEED SENSORS WHT WIRE

1 2 TRUNK LID/ FFS SEPARATION POINT 4 3 1 2 PNK WIRE AIRBAG SIG RF SW CAN L CAN H UNLOCK SOS LED INFO SW LED PNK WIRE AUX. ANTENNA AUXILIARY BATTERY BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/YEL WIRE BRN WIRE BRN/RED WIRE BUS CIRCUIT) COMPUTER DATA LINES SYSTEM CTEL ANTENNA EMERGENCY CALL SPARE ANTENNA FREQUENCY SWITCHOVER CONTROL MODULE FRONT SAM CONTROL MODULE FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 40 GPS GPS ANTENNA GRN WIRE GRN/BLK WIRE GRY/BLU WIRE GRY/WHT WIRE HOT AT ALL TIMES INTERIOR FUSE BOX (LEFT SIDE OF DASH) LEFT FRONT EMERGENCY CALL SPEAKER MB-INFO, BREAKDOWN ASSISTANCE SWITCH MIC + MIC - MIC - MIC + DIAG MUTE RAP SW 30 30 +AUX. BATT NAVIGATION SYSTEM (VOICE ACTIVATION CIRCUIT) NCA WIRE ORG/ WIRE RADIO/COMMAND OPERATING, DISPLAY, CONTROL UNIT OR RADIO REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK) RED WIRE RED/GRN WIRE RED/VIO WIRE RED/WHT WIRE SOS PUSHBUTTON SWITCH SOS SW INFO LED 31 31 TELE AID TRANSMITTER/ RECEIVER (AT FRONT OF CARGO AREA) TELEPHONE SYSTEM WAKE-UP WHT WIRE WHT/BLK WIRE WHT/GRN WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/RED WIRE YEL/VIO WIRE