Mercedes-Benz C-class AMG W203/S203/CL203 (2001-2004) computer data lines system Wiring diagrams

1 2 CAN B L CAN B H 11 8 RR BACKUP LR BACKUP 4 5 6 CAN-B L CAN-B H REVERSE 6 7 CA CAN-B L CAN-B H BACK UP LAMP BACK- UP LAMP SWITCH (ON RIGHT SIDE OF TRANSMISSION) (M/T) BLU WIRE BRN WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM ELECTRONIC SELECTOR LEVER CONTROL MODULE (AT BASE OF SELECTOR LEVER) (A/T) FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) GRN WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE LEFT TAILLAMP UNIT REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK) RIGHT TAILLAMP UNIT YEL WIRE

2.3L 2.6L, 3.2L 22 23 29 33 22 20 19 21 TVA TVA SIG TVA TVA SIG 26 39 6 3 TVA MTR TVA MTR 9 10 11 12 13 8 30 CAN-C H CAN-C L CAN-B L CAN-B H 31 ACCEL SET/ ACCELERATOR PEDAL ASSEMBLY (ABOVE PEDAL ASSEMBLY) BLK WIRE BLU WIRE BLU/BRN WIRE BRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CAN C H CAN C L COMPUTER DATA LINES SYSTEM CONTACT CRUISE CONTROL SWITCH DEC DECEL/ SET ENGINE CONTROL MODULE (LEFT REAR OF ENGINE COMPT) FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) GRN WIRE GRN/WHT WIRE GRY WIRE OFF RED WIRE RED/BLU WIRE RES+ RESUME SAFETY THROTTLE VALVE ACTUATOR (FRONT LEFT SIDE OF ENGINE) VIO WIRE VIO/GRN WIRE VIO/YEL WIRE WHT WIRE YEL 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

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

6 7 5 4 CAN-B H CAN-B L 30 31 7 5 SH (+) SH (-) AAC PUSHBUTTON CONTROL MODULE BLK/RED WIRE BLU WIRE BRN WIRE BRN/GRY WIRE BRN/RED WIRE CAN-B H CAN-B L 30 31 COMPUTER DATA LINES SYSTEM DEFROSTER SWITCH FUSE 21 FUSE 22 FUSE 41 HOT AT ALL TIMES INTERIOR FUSE BOX (UNDER LEFT END OF DASH) LEFT EXTERIOR MIRROR LEFT FRONT DOOR CONTROL MODULE NCA WIRE RED WIRE RED/BLU WIRE RED/WHT WIRE RIGHT EXTERIOR MIRROR RIGHT FRONT DOOR CONTROL MODULE 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 COIL 4 COIL 3 COIL 2 50 TNA ACCELERATOR PEDAL SENSOR (ABOVE PEDAL ASSEMBLY) BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BLU/BRN WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/ORG WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE COIL 1 COMPUTER DATA LINES SYSTEM COOLING FANS SYSTEM CYLINDER IGNITION COILS DATA LINK CONNECTOR DIAG ENGINE CONTROL MODULE (ME-SFI) (LEFT REAR OF ENGINE COMPT) FTP FTP SIG 31 FP FUEL TANK PRESSURE SENSOR (UNDER LEFT REAR SEAT) GRN WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/VIO WIRE KICKDWN M/T NCA WIRE PNK/RED WIRE RADIO INTERFERENCE SUPPRESSION CAPACITOR (TOP OF ENGINE) RED/BLU WIRE RED/GRN WIRE TO SPARK PLUGS VIO/GRN WIRE VIO/WHT WIRE VIO/YEL WIRE YEL WIRE YEL/BRN WIRE

BLK/GRN WIRE BLK/RED WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/ORG WIRE BRN/RED WIRE BRN/VIO WIRE BRN/YEL WIRE CAMSHAFT HALL SENSOR (RIGHT FRONT OF ENGINE) CAN L CIRCUIT 87 RELAY (ENGINE) COMPUTER DATA LINES SYSTEM CPP FRONT PRE-FUSE BOX (RIGHT REAR OF ENGINE COMPT) FUSE 2 FUEL PUMP FUEL PUMP ASSEMBLY FUEL PUMP RELAY FUSE 4 FUSE 54 FUSE 53 FUSE 53 FUSE 6 GRN/YEL WIRE GRY/BLU WIRE HOT AT ALL TIMES LEFT FUEL LEVEL SENSOR NCA WIRE OXYGEN SENSOR 1 (UPSTREAM TWC) (ON EXHAUST PIPE) OXYGEN SENSOR 2 (DOWNSTREAM TWC) (ON EXHAUST PIPE) PNK/RED WIRE REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK) RED WIRE RED/BLU WIRE RED/GRN WIRE RIGHT FUEL LEVEL SENSOR TNA VIO/BLU WIRE VIO/WHT WIRE YEL WIRE YEL/BRN WIRE YEL/GRY WIRE