Mercedes-Benz S-class W220 (1998-2005) computer data lines system Wiring diagrams

ABS MIL INDICATOR BLK WIRE BLK/BLU WIRE BLK/BLU/WHT WIRE BLK/PNK WIRE BLK/WHT WIRE BLK/YEL WIRE BRN/YEL WIRE COCKPIT FUSE BOX (RIGHT SIDE OF DASH) COMPUTER DATA LINES SYSTEM ESP WARNING INDICATOR ESP/SPS/BAS CONTROL MODULE (LEFT REAR OF ENG COMPT) FUSE 16 FUSE 34 FUSE 79 GRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRY/ GRN WIRE GRY/YEL WIRE HEADLIGHTS SYSTEM HOT AT ALL TIMES HOT IN RUN OR START INSTRUMENT CLUSTER LEFT FRONT FUSE/RELAY MODULE (LEFT REAR OF ENGINE COMPT) LEFT REAR VSS (LEFT REAR WHEELHOUSE) NCA WIRE REAR SAM CONTROL MODULE (UNDER RIGHT REAR SEAT) RED/BLK WIRE RED/GRN WIRE RED/YEL WIRE RIGHT FRONT FUSE/RELAY MODULE (RIGHT REAR OF ENGINE COMPT) RIGHT REAR VSS (RIGHT REAR WHEELHOUSE) STOPLIGHT SWITCH (ON TOP OF BRAKE PEDAL) TELE AID CONTROL MODULE (IF EQUIPPED) TURN RATE, LATERAL ACCELERATION SENSOR (UNDER LEFT REAR SEAT) WHT WIRE WHT/YEL WIRE YEL/BLK WIRE YEL/RED WIRE

1 11 8 5 20 19 15 CAN-B L CAN-B H EDW LF DOOR RF DOOR LR DOOR RR DOOR 1 11 CAN-B H CAN-B L 1 2 1 CAN-B L CAN-B H 1 2 2 CAN-B L CAN-B H 1 2 CAN B L CAN B H 3 4 1 CAN-B L CAN-B H 3 4 2 CAN-B H CAN-B L 3 4 7 8 CAN-B L CAN-B H CAN-B H CAN-B L 6 7 3 4 CAN-B L CAN-B H EDW ALARM SIREN (W/ AUXILIARY BATTERY) (REAR OF LEFT FRONT WHEELWELL) ANTI- TOW RELAY ANTI-TOW ATA (EDW) INCLINATION SENSOR (BENEATH RIGHT REAR SEAT) ATA HOOD SWITCH (FRONT CENTER OF ENG COMPT) BLK WIRE BLK/RED WIRE BLU/RED WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM ENGINE CONTROL MODULE (ME-SFI) (RIGHT REAR CORNER OF ENGINE COMPT) FUSE 2 FUSE 51 GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/RED WIRE GRY/VIO WIRE HOOD HOT AT ALL TIMES LEFT FOOTWELL) LEFT FRONT DOOR CONTROL MODULE (IN DOOR) LEFT FRONT DOOR SWITCH LEFT FRONT IR RECEIVER (IN HANDLE) LEFT FRONT SAM CONTROL MODULE (IN LEFT FRONT FUSE/RELAY BOX) LEFT REAR DOOR SWITCH OVERHEAD CONTROL PANEL CONTROL MODULE (ABOVE CENTER REARVIEW MIRROR) REAR FUSE/ RELAY MODULE (UNDER RIGHT REAR SEAT) REAR SAM CONTROL MODULE (BELOW RIGHT REAR SEAT) RED WIRE RED/WHT WIRE RIGHT FRONT DOOR CONTROL MODULE (IN DOOR) RIGHT FRONT DOOR SWITCH RIGHT FRONT IR RECEIVER (IN HANDLE) RIGHT FRONT SAM CONTROL MODULE (IN RIGHT FRONT FUSE/RELAY BOX) RIGHT REAR DOOR SWITCH TERMINAL BLOCK, FUSE BOX TRNK TRUNK LID MICRO SWITCH TS/IMS/ATA FUNCTION INDICATOR SWITCH ULTRASONIC ECHOLOT SENSOR UPPER CONTROL FIELD CONTROL MODULE (TOP CENTER OF DASH) VIO WIRE WHT WIRE WHT/GRN WIRE WHT/PNK WIRE

1 2 2 6 7 4 CAN-B L CAN-B H 2 13 3 REFRIG TEMP SENS SIG REFRIG TEMP SENS GND A/C SYSTEM BLOWER UNIT AAC MULTIFUNCTION SENSOR (RIGHT REAR OF ENG COMPT) AAC PUSHBUTTON CONTROL MODULE (FRONT CENTER CONSOLE) AAC SUN SENSOR BLK WIRE BLK/BLU WIRE BLK/PNK WIRE BLOWER MOTOR BLOWER REGULATOR BLU WIRE BRN WIRE BRN/GRN WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE CAN B L CAN B H COCKPIT FUSE BOX (2004-5) (RIGHT SIDE OF DASH) COMPUTER DATA LINES SYSTEM COOLANT CIRCULATION PUMP ENGINE CONTROL MODULE (ME-SFI) (RIGHT REAR OF ENG COMPT) ENGINE/CLIMATE CONTROL ELECTRIC COOLING FAN (FRONT CENTER OF ENGINE) EVAPORATOR TEMPERATURE SENSOR FUSE 23 FUSE 82 FUSE 33 FUSE 47 FUSE 68 GRN WIRE GRY/GRN WIRE GRY/RED WIRE GRY/YEL/VIO WIRE HEATER SUPPLY UNIT HOT AT ALL TIME HOT AT ALL TIMES HOT AT ALL TIMES REAR FUSE/ RELAY MODULE (UNDER RIGHT REAR SEAT) FUSE 69 HOT IN ON OR START LEFT DUOVALVE LEFT FRONT FUSE/RELAY MODULE (2003) (LEFT REAR OF ENGINE COMPT) LEFT FRONT SAM CONTROL MODULE (IN FUSE/RELAY BOX, LEFT SIDE) LEFT REAR HEATER CORE TEMPERATURE SENSOR (W/REAR A/C) NCA WIRE REAR A/C ELECTRONIC BLOWER REGULATOR (W/REAR A/C) REAR BLOWER MOTOR (W/REAR A/C) REAR EVAPORATOR TEMPERATURE SENSOR (W/REAR A/C) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT DUOVALVE RIGHT FRONT SAM CONTROL MODULE (IN FUSE RELAY BOX, RIGHT SIDE) RIGHT FUSE/ FRONT RELAY MODULE (LEFT REAR OF ENGINE COMPT) RIGHT HEATER CORE TEMPERATURE SENSOR RIGHT REAR HEATER CORE TEMPERATURE SENSOR (W/REAR A/C) SOLID STATE TERMINAL BLOCK, FUSE BLOCK (CIRCUIT 30, 61) FUSE 3 VIO WIRE WHT WIRE YEL WIRE YEL/BLU WIRE

ACTIVE CHARCOAL FILTER FLAP ADJUSTMENT MOTOR AIR DISTRIBUTION (UP/DOWN) ACTUATOR MOTOR (W/REAR A/C) (BEHIND CENTER OF DASH) BLK WIRE BLK/BRN/VIO WIRE BLK/PNK WIRE BLU WIRE BRN WIRE BRN/GRN WIRE BRN/RED WIRE BRN/VIO WIRE CAN-BL CAN-BH COMPUTER DATA LINES SYSTEM COOLANT CIRCULATION PUMP ELECTRONIC CENTER AIR OUTLET CONTROL MODULE (CENTER OF DASH) ELECTRONIC STEPPER MOTOR CONTROL MODULE (IN CENTER CONSOLE) FRESH AIR/ RECIRCULATED AIR ACTUATOR MOTOR GRN WIRE GRY WIRE GRY/BLU WIRE LEFT AIR OUTLET ILLUM- INATION LEFT CENTER VENT DIVERTER FLAP ACTUATOR MOTOR LEFT CENTER VENT TEMPERATURE CONTROL ACTUATOR MOTOR LEFT DEFROSTER VENT FLAP ACTUATOR MOTOR LEFT DUOVALVE LEFT FOOTWELL FLAP ACTUATOR MOTOR NCA WIRE PNK WIRE REAR A/C CONTROL MODULE (W/REAR A/C) (FRONT CENTER CONSOLE) REAR AUXILIARY HEATER SUPPLY UNIT (W/REAR A/C) REAR REFRIGERANT SHUT-OFF VALVE (W/REAR A/C) (AT LEFT FRONT WHEELHOUSE) RED WIRE RED/BLU WIRE RED/WHT WIRE RIGHT AIR OUTLET ILLUM- INATION RIGHT CENTER VENT DIVERTER FLAP ACTUATOR MOTOR RIGHT CENTER VENT TEMPERATURE CONTROL ACTUATOR MOTOR RIGHT DEFROSTER VENT FLAP ACTUATOR MOTOR RIGHT DUOVALVE RIGHT FOOTWELL FLAP ACTUATOR MOTOR SOLID STATE VIO WIRE WHT WIRE YEL WIRE

1 11 CAN H CAN L 5 9 COOL TMP SENS - BRN WIRE BRN/GRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM COOLANT TEMPERATURE SENSOR (FRONT OF ENGINE) ENGINE CONTROL MODULE (ME-SFI) (RIGHT REAR OF ENG COMPT) ENGINE/CLIMATE CONTROL ELECTRIC COOLING FAN (FRONT CENTER OF ENGINE) FAN FUSE 30 GRN WIRE GRN/RED WIRE GRN/WHT WIRE HOT AT ALL TIME TERMINAL BLOCK, FUSE BLOCK (CIRCUIT 30, 61) FUSE 3 HOT W/ ENGINE ELECTRONIC/ CHASSIS RELAY RED WIRE RED/GRN WIRE RIGHT FRONT FUSE/ RELAY MODULE (RIGHT REAR OF ENGINE COMPT) YEL/BLU WIRE

10 9 3 2 7 6 CAN H CAN L CAN H CAN L 30 31 19 20 21 22 P- 3 6 M+ M- ACCEL/SET ACCELERATOR PEDAL SENSOR (ABOVE PEDAL ASSEMBLY) BLK WIRE BLU WIRE BLU/GRY WIRE BRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CAN H CAN L P- SIG SIG P- P+ COCKPIT FUSE BOX (RIGHT SIDE OF DASH) COMPUTER DATA LINES SYSTEM CRUISE CONTROL SWITCH CTRL CONTACT DECEL/SET ENGINE CONTROL MODULE (ME-SFI) (RIGHT REAR OF ENGINE COMPT) FUSE 78 GRN WIRE GRN/WHT WIRE GRY WIRE HOT AT ALL TIMES MEMORY RECALL NCA WIRE OFF RED WIRE STEERING COLUMN MODULE (TOP OF STEERING COLUMN) THROTTLE VALVE ACTUATOR (REAR TOP CENTER OF ENGINE) VIO WIRE VIO/GRN WIRE VIO/YEL WIRE WHT WIRE YEL WIRE

1 2 3 4 5 6 7 8 1 GND DATA- 1 2 3 4 5 6 7 8 2 CAN H DIAG 11 1 CAN-C L CAN-C H 87 CAN L BLU WIRE BLU/GRN WIRE BLU/RED WIRE BLU/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DATA DISTRONIC (DTR) CONTROL MODULE (RIGHT FRONT FOOTWELL, UNDER STEP PLATE) DTR RADAR SENSOR (FRONT CENTER OF ENG COMPT) ENGINE CONTROL MODULE (ME-SFI) FUSE 36 GRN WIRE GRN/WHT WIRE HOT AT ALL TIMES NCA WIRE RED WIRE RIGHT FRONT FUSE/RELAY MODULE (RIGHT REAR OF ENGINE COMPT) SHLD VF+ WHT WIRE YEL WIRE

AIR CONDITIONING SYSTEM BLU WIRE BLU/GRN WIRE BLU/RED WIRE BRAKE FLUID LEVEL SWITCH (ON BRAKE MASTER CYLINDER RESERVOIR) BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CIRCUIT CIRCUIT 15 RELAY COMPUTER DATA LINES SYSTEM ELECTRONIC POWER STEERING SYSTEM EXTERIOR LIGHTS SYSTEM ELECTRONIC SUSPENSION SYSTEM GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/RED WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/RED WIRE GRY/YEL WIRE HEADLIGHTS SYSTEM HOT AT ALL TIMES INTERIOR LIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM ANTI-THEFT SYSTEM LEFT FRONT BRAKE PAD WEAR SENSOR LEFT FRONT FUSE/RELAY MODULE (LEFT REAR OF ENGINE COMPT) LEFT FRONT SAM CONTROL MODULE NCA WIRE OUTSIDE TEMPERATURE INDICATOR SENSOR RED WIRE RELAY STEERING COLUMN HEIGHT ADJUSTMENT RELAY 1 STEERING COLUMN HEIGHT ADJUSTMENT RELAY 2 STEERING COLUMN LONGITUDINAL ADJUSTMENT RELAY 1 STEERING COLUMN LONGITUDINAL ADJUSTMENT RELAY 2 WHT WIRE WINDSHIELD PARK HEATER RELAY WIPER ON/OFF RELAY WIPER STAGE 1-2 RELAY WIPER/WASHER SYSTEM YEL WIRE

ANTI-LOCK BRAKES SYSTEM ANTI-THEFT SYSTEM BLK/GRN WIRE BLK/RED WIRE BLK/WHT WIRE BLU/BLK WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE BRN/WHT WIRE CIRCUIT CIRCUIT 15 RELAY COMPUTER DATA LINES SYSTEM DOOR LOCKS SYSTEM FUSE 53 GRN WIRE GRN/BLU WIRE GRN/PNK WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/RED WIRE GRY/VIO WIRE GRY/YEL WIRE HOT AT ALL TIMES LEFT FRONT FUSE/RELAY MODULE (LEFT REAR OF ENGINE COMPT) LEFT FRONT SAM CONTROL MODULE NCA WIRE PASSIVE RESTRAINTS SYSTEM PNK/RED WIRE REAR FUSE/RELAY MODULE (UNDER RIGHT REAR SEAT) REAR SAM CONTROL MODULE (BELOW RIGHT REAR SEAT) REAR SUNSHADE RELAY REAR WINDOW DEFROSTER RELAY RELAY RIGHT REAR BRAKE PAD WEAR SENSOR SUPPLEMENTAL RESTRAINTS SYSTEM TOWING SENSOR RELAY WHT WIRE

AIR CONDITIONING SYSTEM BLK WIRE BLK/GRN WIRE BLU WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CIRCUIT 15 RELAY COMPUTER DATA LINES SYSTEM ENGINE COOLANT LEVEL SWITCH ENGINE ELECTRONIC/ CHASSIS RELAY FANFARE RELAY GRY WIRE GRY/BLK WIRE GRY/RED WIRE HEADLIGHTS SYSTEM HOT AT ALL TIMES LEFT FRONT FUSE/RELAY MODULE (LEFT REAR OF ENGINE COMPT) LEFT FRONT SAM CONTROL MODULE NCA WIRE PNK/RED WIRE RIGHT FRONT BRAKE PAD WEAR SENSOR RIGHT FRONT FUSE/RELAY MODULE (RIGHT REAR OF ENGINE COMPT) RIGHT FRONT SAM CONTROL MODULE STARTING/CHARGING SYSTEM WHT WIRE WIPER/WASHER FLUID LEVEL SWITCH WIPER/WASHER SYSTEM YEL WIRE