Mercedes-Benz C-class W204/S204 (2006-2011) brn/red Wiring diagrams

10 9 CAN B L CAN B H 18 17 CAN B H CAN B L BRN WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM EXTERIOR LIGHTS SWITCH FRONT ELECTRICAL PREFUSE BOX (AT RIGHT REAR OF ENGINE COMPT) FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 105 FUSE 89 GRY/YEL WIRE HOT AT ALL TIMES HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED INSTRUMENT CLUSTER INSTRUMENT PANEL SWITCH GROUP RED WIRE RED/YEL WIRE SIG

1 2 CAN B L CAN B H 1 4 12 13 17 18 31 30 CAN E L CAN E H CAN B L CAN B H 12 31 6 5 31 31 RETURN LINE GSS, FA BBV HL BBV HR BFS BLU WIRE BRAKE FLUID LEVEL SWITCH (IN BRAKE FLUID RESERVOIR) 81 74 75 30 CAN E L CAN E H BRAKE FLUID, PARKING BRAKE WARNING LAMP BRN WIRE BRN/BLK WIRE BRN/RED WIRE BRN/WHT WIRE CAN B H CAN B L CAN E H CAN E L COMPUTER DATA LINES SYSTEM DRIVER SEAT BELT BUCKLE RESTRAINT SYSTEMS SWITCH (IN DRIVER'S SEAT BELT BUCKLE) FLAT WIRE FLAT WIRE FLAT WIRE 5 4 31 SIG FUSE 15 FUSE 28 GRN WIRE GRN/WHT WIRE GRY/GRN WIRE HOT W/ QUIESCENT CUT OUT RELAY ENERGIZED INSTRUMENT CLUSTER LEFT FRONT DOOR CENTRAL LOCKING INTERIOR SWITCH LEFT FRONT DOOR CONTROL UNIT MULTI-FUNCTION DISPLAY NCA WIRE PARKING BRAKE INDICATOR SWITCH (ON PARKING BRAKE SUPPORT BRACKET) RED/BRN WIRE RED/GRY WIRE RED/YEL WIRE RIGHT FRONT BRAKE PAD WEAR SENSOR (AT RIGHT FRONT BRAKE ASSEMBLY) RIGHT REAR BRAKE PAD WEAR SENSOR (AT RIGHT REAR BRAKE ASSEMBLY) SEAT BELT REMINDER LAMP SERVICE BRAKE IND LAMP SIG SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT (UNDER FRONT OF CENTER CONSOLE) WARNING BUZZER YEL WIRE YEL/RED WIRE

3 4 CAN B H CAN B L 41 40 CAN C H CAN C L BATTERY SENSOR (ON BATTERY) BLK WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE CAN C H CAN C H CAN C L CAN C L CHARGING CIRCUIT COMPUTER DATA LINES SYSTEM CONTROL UNIT) ELECTRONIC IGNITION SWITCH CONTROL UNIT ELECTRONIC SELECTOR LEVEL MODULE CONTROL MODULE (A/T) (UNDER CENTER CONSOLE) FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FULLY INTEGRATED TRANSMISSION CONTROL UNIT (7 SPEED A/T) FUSE 25 FUSE 5 FUSE 7 ME-SFI (ME) CONTROL MODULE (TOP CENTER OF ENGINE) ON-BOARD ELECTRICAL SYSTEM BATTERY PNK/RED WIRE POWER DISTRIBUTION SYSTEM REAR SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK/CARGO AREA) RED WIRE RED/BLU WIRE RELAY SOLID STATE START ENABLE CLUTCH PEDAL SWITCH (M/T) (TOP OF CLUTCH PEDAL ASSEMBLY) STARTER STARTER CIRCUIT VIO WIRE VIO/WHT WIRE

BLK/GRY WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/GRY WIRE BRN/PNK WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE CAN L COMPUTER DATA LINES SYSTEM DRIVER KNEEBAG SQUIB (IF EQUIPPED) FUSE 77 GRN/YEL WIRE GRY WIRE HOT AT ALL TIMES LEFT FRONTAL ACCELERATION SENSOR (BEHIND LEFT SIDE OF FRONT BUMPER) LEFT REAR EMERGENCY TENSIONING RETRACTOR SQUIB (IN LEFT "C" PILLAR) LEFT REAR SIDE BAG SQUIB (IF EQUIPPED) LEFT SIDE AIR BAG SENSOR (BASE OF LEFT "B" PILLAR) PNK WIRE PNK/BLK WIRE PNK/BLU WIRE PNK/WHT WIRE REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT SIDE OF RED WIRE RED/BLU WIRE RED/VIO WIRE RIGHT FRONTAL ACCELERATION SENSOR (BEHIND RIGHT SIDE OF FRONT BUMPER) RIGHT SIDE AIR BAG IGNITION SQUIB (RIGHT SIDE OF FRONT PASSENGER'S SEAT BACK) RIGHT SIDE AIR BAG SENSOR (BASE OF RIGHT "B" PILLAR) SIG TRUNK/CARGO AREA) WHT WIRE WHT/BRN WIRE WHT/VIO WIRE WHT/YEL WIRE

AIR BAG SQUIB (IF EQUIPPED) BLK WIRE BLK/GRY WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/BLK WIRE BLU/GRN WIRE BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/PNK WIRE BRN/RED WIRE BRN/VIO WIRE BRN/YEL WIRE CENTER REAR SEAT BELT BUCKLE SWITCH COMPUTER DATA LINES SYSTEM DRIVER ETR (GUS) IGNITION SQUIB (AT BASE OF LEFT "B" PILLAR) DRIVER PELVIS AIR BAG SQUIB DRIVER SEAT NECK-PRO HEAD RESTRAINT SOLENOID FRONT ELECTRICAL PRE-FUSE BOX (AT RIGHT REAR OF ENGINE COMPT) FRONT PASSENGER ETR IGNITION SQUIB FRONT PASSENGER PELVIS FRONT PASSENGER SEAT NECK-PRO HEAD RESTRAINT SOLENOID FUSE 88 FUSE MODULE W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK/ CARGO AREA) GRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GS, HL+ GS, HL- SB,BF- SB,BF+ GS, HR+ GS, HR- PG, BF- PG, BF+ PG, FA+ PG, FA- CAK, FA CAK, BF HOT AT ALL TIMES HOT W/ INSTRUMENT CLUSTER LEFT REAR SEAT BELT BUCKLE SWITCH LEFT WINDOW AIR BAG IGNITION SQUIB (LEFT REAR OF ROOF) PNK WIRE REAR SAM CONTROL RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/VIO WIRE RED/YEL WIRE RELAY ENERGIZED RIGHT REAR EMERGENCY TENSIONING RETRACTOR SQUIB (IN RIGHT "C" PILLAR) RIGHT REAR SEAT BELT BUCKLE SWITCH RIGHT REAR SIDE BAG SQUIB (IF EQUIPPED) RIGHT WINDOW AIR BAG IGNITION SQUIB (RIGHT REAR OF ROOF) SB, FA- SB, FA+ (+) (-) WB, VR- WB, VR+ SB, HR+ SB, HR- SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT SUPPLEMENTAL RESTRAINT SYSTEM INDICATOR LAMP VIO/BLU WIRE VIO/GRN WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/VIO WIRE

BRN WIRE BRN/RED WIRE CAN B H CAN B L COMPUTER DATA LINES SYSTEM FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 28 FUSE 70 W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK/CARGO AREA) HOT AT ALL TIMES HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED INSTRUMENT CLUSTER LEFT FRONT TIRE PRESSURE SENSOR LEFT REAR TIRE PRESSURE SENSOR REAR SAM CONTROL UNIT RED/GRN WIRE RED/YEL WIRE RIGHT FRONT TIRE PRESSURE SENSOR RIGHT REAR TIRE PRESSURE SENSOR TIRE PRESSURE MONITOR CONTROL UNIT (LEFT SIDE OF TRUNK) TIRE PRESSURE MONITOR WARNING LAMP

1 2 3 4 5 6 CAN C H CAN C L 17 18 CAN B L CAN B H 31 CAN C L CAN C H 31 SIG 4 3 CAN B L CAN B H 87 GND AUTOMATIC TRANSMISSION MODE BUTTON AUTOMATIC TRANSMISSION NEUTRAL POSITION SWITCH (W/ KEYLESS GO SYSTEM) BLU WIRE BLU/WHT WIRE BRN WIRE BRN/RED WIRE CAN C H CAN C L CLUTCH CONTROL SOLENOID COMPUTER DATA LINES SYSTEM D- D+ ELECTRIC STEERING LOCK CONTROL UNIT (TOP OF STEERING COLUMN) ELECTRONIC IGNITION SWITCH CONTROL UNIT ELECTRONIC SELECTOR LEVER MODULE CONTROL MODULE (UNDER CENTER CONSOLE) FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FULLY INTEGRATED TRANSMISSION CONTROL UNIT FULLY SELECTION INTEGRATED RANGE TRANSMISSION SENSOR CONTROL UNIT FUSE GEAR DISPLAY GEAR DISPLAY SENSOR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 GRN WIRE GRY/BLU WIRE HOT W/ CHASSIS CIRCUIT 87 RELAY ENERGIZED HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED INSTRUMENT CLUSTER INTERNAL OUTPUT TRANSMISSION SHAFT SPEED RPM RPM SENSOR SENSOR MULTIDISK MULTIDISK BRAKE BRAKE CONTROL CONTROL SOLENOID SOLENOID PRND R/P S (+) R/P S (-) RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE SELECT LEVER POSITIONS R, P LOCKING SOLENOID SHIFT GATE SYMBOL ILLUMINATION TIPP (MASSE) TIPP (PLUS) TIPP (-) TIPP (+) TRANSMISSION MODE DISPLAY TRANSMISSION OIL TEMPERATURE SENSOR TURBINE WHEEL RPM SENSOR WHT WIRE WHT/GRN WIRE WORKING PRESSURE CONTROL SOLENOID VALVE YEL WIRE

-1 +2 1-2, 3-4, 5-6, 7-8) 4 2 1 5 31 CAN B H CAN B L 30 7 8 6 FLAT WIRE FLAT WIRE FLAT WIRE BLK/WHT WIRE BRN WIRE BRN/RED WIRE BRN/YEL WIRE CAN B H CAN B L CAN B L CAN B H COMPUTER DATA LINES SYSTEM FLAT WIRE FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 2 FUSE 61 GND SIG GRN/BLK WIRE GRN/BLU WIRE GRN/GRY WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/PNK WIRE HFE HOT AT ALL TIMES HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED LEFT FRONT DOOR CONTROL UNIT NCA WIRE OPERATION SWITCH REAR SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK/CARGO AREA) RED/WHT WIRE RED/YEL WIRE SIG TAILGATE CONTROL BUTTON (W/ AUTOMATIC TAILGATE, KEYLESS GO SYSTEM) TAILGATE CONTROL DRIVE UNIT TAILGATE CONTROL ELECTRIC MOTOR TAILGATE CONTROL HALL SENSOR TAILGATE CONTROL MAGNETIC CLUTCH TAILGATE CONTROL POSITION SENSOR TAILGATE CONTROL UNIT TAILGATE CONTROL WARNING BUZZER TRUNK LID CENTRAL LOCKING MOTOR (CENTER REAR OF TRUNK LID) TRUNK LID CONTACT SWITCH (IN TRUNK LID LATCH ASSEMBLY) TRUNK LID EMERGENCY OPENING SWITCH (TRUNK LID) TRUNK LID EXTERNAL TRUNK LID LOCKING ELEMENT W/ AUTOMATIC TAILGATE W/ MANUAL TAILGATE WHT/YEL WIRE YEL WIRE

1 3 CAN E H CAN E L 10 2 1 3 4 7 31 CAN E H CAN E L CAN B H CAN B L 18 17 CAN B H CAN B L 2 1 CAN E H CAN E L 30 31 4 5 31 SIG HOT W/ CIRCUIT 8 4 9 SIG GND SIG 9 10 CAN-B H CAN-B L ANST BLK/GRY WIRE BLK/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/GRY WIRE BRN/RED WIRE CAN B H CAN B L CAN B L CAN B H COMBINATION SWITCH COMPUTER DATA LINES SYSTEM ELECTRONIC IGNITION SWITCH CONTROL UNIT ENERGIZED 2 3 1 4 (+) LIN 2 31 FUSE 10 FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE FUSE 13 FUSE 17 FUSE 27 GRN WIRE GRN/WHT WIRE GRY/RED WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED INSTRUMENT CLUSTER LIN 2 MODEL CODE 204.0 NCA WIRE PNK/GRY WIRE RAIN/LIGHT SENSOR (IF EQUIPPED) (TOP CENTER OF WINDSHIELD) REAR SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK/CARGO AREA) RED WIRE RED/BLU WIRE SPRAY NOZZLE HEATER SPRAY NOZZLE HOSE HEATER (IF EQUIPPED) STEERING COLUMN MODULE CONTROL UNIT TAILGATE WINDSHIELD WIPER RELAY TAILGATE WIPER MOTOR VIO/YEL WIRE WINDSHIELD WASHER SYSTEM FLUID LEVEL SWITCH (BEHIND LEFT FRONT BUMPER) WINDSHIELD WASHER SYSTEM SWITCH WIPE SWITCH WIPER MOTOR (AT LEFT REAR OF ENGINE COMPT) WIPER PARK HEATER (IF EQUIPPED) YEL/BLU WIRE

17 18 CAN B L CAN B H A S DK AIR CONDITIONING SYSTEM BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/VIO WIRE BLK/YEL 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/RED WIRE BRN/VIO WIRE BRN/YEL WIRE CAN C H CAN C L COMPUTER DATA LINES SYSTEM E RDS ENGINE COOLANT TEMPERATURE MULFUNCTION IND ENGINE DIAGNOSIS MULFUNCTION IND LAMP FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE FRONT SAM CONTROL UNIT W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUEL PRESSURE SENSOR (IN FUEL TANK) FUEL PUMP CONTROL UNIT (UNDER RIGHT REAR SEAT) FUSE FUSE 106 FUSE 32 GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/PNK WIRE GRN/VIO WIRE GRN/YEL WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/WHT WIRE HOT W/ QUIESCENT CURRENT CUTOUT RELAY ENERGIZED INSTRUMENT CLUSTER IPM LSIK LSHK (+) (+) SV (+) SV ME-SFI (ME) CONTROL MODULE (TOP CENTER OF ENGINE) NCA WIRE NWG M NWSA 1 NWSE 2 ORG/ WIRE PNK/BLK WIRE PNK/RED WIRE PNK/WHT WIRE RED WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT FUEL PUMP SECONDARY AIR INJECTION RELAY SLV THS STARTING/CHARGING SYSTEM VIO WIRE VIO/BLK WIRE VIO/BLU WIRE VIO/BRN WIRE VIO/GRN 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/GRN WIRE YEL/RED WIRE YEL/WHT WIRE ZUE 1 ZUE 3 ZUF 5 ZUE 2 ZUE 4 ZUE 6