Mercedes-Benz C-class W202 facelift (1997-2001) blu Wiring diagrams

2 6 3 1 30 CAN H CAN L 31 COMPUTER DATA LINES SYSTEM BLK WIRE BLU WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CAN-H- CAN-L- CAN-L CAN-H COMPUTER DATA LINES SYSTEM FRONT DRIVER-SIDE DOOR CONTROL MODULE FRONT PASSENGER SIDE DOOR CONTROL MODULE FUSE 2 FUSE 3 FUSE 4 FUSE 6 FUSE 8 FUSE 9 FUSE, RELAY BOX (ON LEFT REAR OF ENGINE COMPT) FUSE 23 GLOVE COMPARTMENT ILLUMINATION WITH SWITCH GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ACC, RUN OR START INSTRUMENT CLUSTER LEFT FRONT DOOR SWITCH LEFT FRONT ENTRANCE/ EXIT LAMP LEFT REAR DOOR SWITCH LEFT SUN VISOR (W/ILLUMINATED VANITY MIRROR) PNK WIRE PNK/GRN WIRE POWER DISTRIBUTION SYSTEM PSE CONTROL MODULE (ON RIGHT SIDE REAR OF TRUNK) REAR DOME LAMP REAR FUSE BOX (ON RIGHT SIDE OF TRUNK) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RIGHT FRONT DOOR SWITCH RIGHT FRONT ENTRANCE/ EXIT LAMP RIGHT REAR DOOR SWITCH RIGHT SUN VISOR (W/ILLUMINATED VANITY MIRROR) ROOF CONTROL UNIT CONTROL MODULE SOLID STATE TRUNK LAMP TRUNK LAMP SWITCH WHT WIRE

BACKREST FORE/AFT BACKREST FORE/AFT MOTOR BATTERY BLK WIRE BLU WIRE BRN WIRE CF RELAY MODULE (ON RIGHT SIDE OF TRUNK FLOOR) FORE/AFT MOTOR REAR RAISE/LOWER MOTOR FRONT RAISE/LOWER MOTOR FRONT SEAT HEIGHT FUSE 10 FUSE 11 FUSE 12 FUSE 13 FUSE, RELAY BOX (LEFT REAR OF ENGINE COMPT) FUSE 1 GRN WIRE GRY WIRE HEAD RESTRAINT RAISE/LOWER MOTOR HEAD RESTRAINT UP/DOWN HOT AT ALL TIMES HOT IN ACC, RUN OR START LEFT FRONT DOOR SWITCH LEFT FRONT POWER SEAT MOTOR GROUP LEFT FRONT POWER SEAT SWITCH NCA WIRE ORG/ WIRE PASSENGER'S POWER SEAT CIRCUIT PNK PNK WIRE PNK WIRE PNK/WHT WIRE REAR FUSE BOX (RIGHT SIDE OF TRUNK) REAR FUSE BOX (RIGHT SIDE OF TRUNK) FUSE 6 RED WIRE RIGHT FRONT DOOR SWITCH SEAT FORE/ AFT REAR SEAT HEIGHT SOLID STATE VIO WIRE W/ BOTH LEFT, RIGHT FRONT POWER SEATS W/ ONLY LEFT FRONT POWER SEAT W/ ONLY RIGHT FRONT POWER SEAT WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/YEL WIRE YEL WIRE

1/A INSTRUMENT CLUSTER HIGH BEAM ON INPUT BLK WIRE BLU WIRE BRN WIRE COMBINATION SWITCH EXTERIOR LAMP FAILURE EXTERIOR LAMP SWITCH EXTERIOR LIGHTS SYSTEM (REAR FOG LAMP) EXTERIOR LIGHTS SYSTEM POWER DISTRIBUTION SYSTEM FLASH HI FOG LAMP FOG LIGHTS SWITCH FUSE FUSE 22 FUSE 24 FUSE 25 FUSE 32 FUSE 31 FUSE 33 FUSE 35 FUSE/ RELAY BOX GRN WIRE GRY WIRE GRY/GRN WIRE GRY/RED WIRE GRY/VIO WIRE GRY/WHT WIRE HEAD HOT AT ALL TIMES HOT IN ACCY, RUN, OR START HOT IN OFF OR ACCY INSTRUMENT CLUSTER SYSTEM LEFT HEADLAMP UNIT LH HEAD MONITORING MODULE (ON LEFT REAR OF ENGINE COMPARTMENT) NCA WIRE NSE OFF OFF PARK OFF RH PARK OFF RH PARK HEAD LH PNK WIRE RED WIRE RELAY BOX FUSE 34 RH PARK HEAD LH RIGHT HEADLAMP UNIT WHT WIRE YEL WIRE

ANTI-LOCK BRAKES SYSTEM BLK WIRE BLK/BLU WIRE BLK/YEL WIRE BLU WIRE BLU/YEL WIRE BRN WIRE BRN/WHT WIRE DATA LINK CONNECTOR FOR DTC FROM EXTERIOR LAMP FAILURE MONITORING MODULE (DIAGRAM FROM FUSE 33 (DIAGRAM FROM FUSE 34 (DIAGRAM FRONT AXLE SENSOR (HEADLAMP RANGE ADJUSTMENT) FUSE 13 FUSE, RELAY BOX (ON LEFT REAR OF ENGINE COMARTMENT) GRN WIRE GRN/BLK WIRE GRN/YEL WIRE GRY WIRE GRY/VIO WIRE HEADLAMP RANGE ADJUSTMENT CONTROL MODULE HIGH BEAM HIGH BEAM STANDING/ PARKING HOT IN RUN OR START LEFT HEADLAMP UNIT LOW BEAM XENON NCA WIRE REAR AXLE SENSOR (HEADLAMP RANGE ADJUSTMENT) RED WIRE RED/YEL WIRE RIGHT HEADLAMP UNIT STANDING/ PARKING VIO WIRE WHT WIRE WHT/YEL WIRE YEL WIRE

BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM DRIVER'S SIDE FUSE, RELAY MODULE BOX ELECTRONIC IGNITION LOCK CONTROL MODULE FANFARE HORN FUSE 40 FUSE 41 HORN RELAY HORN/ AIRBAG CLOCK SPRING CONTACT HOT AT ALL TIMES INSTRUMENT CLUSTER LEFT FOOTWELL) LEFT MULTI-FUNCTION STEERING WHEEL PUSHBUTTON GROUP LEFT MULTI-FUNCTION STEERING WHEEL PUSHBUTTON GROUP PNEUMATIC HORN PUSHBUTTON PNEUMATIC HORN PUSHBUTTON PNK/YEL WIRE RED WIRE RIGHT MULTI-FUNCTION STEERING WHEEL PUSHBUTTON GROUP SIGNAL PICK-UP, ACTIVATION MODULE (SAM) TERMINAL YEL WIRE

1 2 PNK WIRE A/C PUSHBUTTON CONTROL MODULE ABS MIL ASR MIL W/ ASR ASR WARNING INDICATOR BAS INDICATOR BAS/ASR MIL BAS/ESP MIL BLK WIRE BLK/GRN WIRE BLK/RED (OR BLK/GRY) WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BLU/YEL WIRE BRAKE FLUID LEVEL SWITCH BRAKE PAD WEAR INDICATOR BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM ECL SWITCH (ON BOTTOM OF COOLANT RESERVOIR) ECT GAUGE ELECTRONIC CLOCK ELECTRONIC IGNITION- STARTER SWITCH (EIS) CONTROL MODULE ELECTRONIC SPEEDO- METER ESP MIL EXTERIOR LAMP FAILURE INDICATOR EXTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM FUEL LEVEL GAUGE FUEL RESERVE INDICATOR FUSE 19 FUSE 30 FUSE 4 FUSE, RELAY BOX (ON LEFT REAR OF ENGINE COMPARTMENT) GENERATOR CHARGE INDICATOR GRN WIRE GRN/BLU WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE GRY/VIO WIRE HIGH BEAM INDICATOR HOT AT ALL TIMES HOT IN OFF, ACC, RUN OR START HYDRAULIC FLUID LEVEL INDICATOR ILLUMINATION (3 BULBS) INSTRUMENT CLUSTER INSTRUMENT ILLUMINATION (4 BULBS) INSTRUMENT ILLUMINATION RHEOSTAT LEFT FRONT DOOR SWITCH LEFT FRONT SEAT BELT BUCKLE SWITCH (SEAT BELT REMINDER) LEFT FUEL LEVEL SENSOR (ON LEFT SIDE OF FUEL TANK) LEFT TURN SIGNAL INDICATOR LOW BRAKE FLUID LEVEL/ PARKING BRAKE INDICATOR LOW ECL INDICATOR LAMP LOW ENGINE OIL LEVEL INDICATOR LOW WINDSHIELD WASHER FLUID LEVEL INDICATOR NCA WIRE OUTSIDE TEMPERATURE INDICATOR PINS 6, 7 JUMPERED TOGETHER BY PINS 31, 32 PNK 7 6 WIRE PNK WIRE PNK/WHT WIRE PSE CONTROL MODULE RED WIRE RED/YEL WIRE RIGHT FUEL LEVEL SENSOR (ON RIGHT SIDE OF FUEL TANK) RIGHT TURN SIGNAL INDICATOR SEAT BELT REMINDER INDICATOR SOLID STATE SPEED WARNING BUZZER SRS CONTROL MODULE SRS CONTROL MODULE (ON TRANSMISSION TUNNEL, FORWARD OF SHIFTER) SRS MIL, CONTROL STARTING/CHARGING SYSTEM TACHO- METER W/ ESP ESP WARNING INDICATOR WARNING BUZZER WHT WIRE WHT/BLK WIRE WHT/BRN WIRE WINDSHIELD WASHER FLUID LEVEL SWITCH (ON WINDSHIELD WASHER FLUID RESERVOIR) YEL WIRE YEL/BLU WIRE

1 1 ILLUM 11 3 LED (LEFT WHEELHOUSING IN TRUNK) 2 (OR 7) 1 4 9 CAN L CAN H ATA STATUS/TOWING/ INTERIOR PROTECTION SWITCH BLK WIRE BLU WIRE BLU/GRN WIRE BRN WIRE BRN/GRN WIRE BRN/RED WIRE CAN-L CAN-H COCKPIT SWITCH GROUP COMPUTER DATA LINES SYSTEM CTEL TRANSMITTER/ RECEIVER DRIVER-SIDE FUSE, RELAY MODULE BOX ESP OFF SWITCH EXTERIOR LAMP SWITCH FRONT CIGAR LIGHTER FRONT HEATED SEAT CONTROL MODULE FUSE 17 FUSE 5 FUSE 7 FUSE, RELAY BOX (ON LEFT REAR OF ENGINE COMPT) GRN WIRE GRY WIRE GRY/BLU WIRE GRY/VIO WIRE HAZARD FLASHER SWITCH HEAD LH HOT AT ALL TIMES IN DASH CONTROLLER INSTRUMENT CLUSTER INSTRUMENT ILLUMINATION INSTRUMENT ILLUMINATION RHEOSTAT LEFT FRONT HEATED SEAT SWITCH LEFT LICENSE PLATE LAMP LEFT REAR POWER WINDOW SWITCH LOWER CONTROL FIELD CONTROL MODULE NCA WIRE OFF PARK RH OUTSIDE REARVIEW MIRROR SWITCH (WITH FOLD-IN/OUT FEATURE) PSE CONTROL MODULE PTS ON/OFF SWITCH RADIO REAR DRIVER-SIDE DOOR CONTROL MODULE REAR FUSE BOX (ON RIGHT SIDE OF TRUNK) REAR PASSENGER- SIDE DOOR CONTROL MODULE RED WIRE RED/BLK WIRE RED/GRN WIRE RED/YEL WIRE RIGHT FRONT HEATED SEAT SWITCH RIGHT LICENSE PLATE LAMP RIGHT REAR POWER WINDOW SWITCH SOLID STATE TERMINAL TRANSMISSION RANGE RECOGNITION SWITCH ULTRASONIC PTS CONTROL MODULE VIO WIRE WHT WIRE YEL WIRE

A/C SYSTEM BATTERY BLK WIRE BLU WIRE BRN WIRE CF RELAY MODULE, CIRCUIT 302 FUSE COMBINATION SWITCH CTEL INTERFACE DATA LINK CONNECTORS (OBD II, DTC READOUT) DRIVER'S SIDE FUSE, RELAY MODULE BOX ELECTRONIC IGNITION LOCK CONTROL MODULE EMERGENCY CALL CONTROL MODULE, MIRRORS SYSTEM, ENGINE CONTROL MODULE ENGINE CONTROLS SYSTEM TRANSMISSION RANGE RECOGNITION SWITCH ESC CONTROL MODULE EXTERIOR LAMP SWITCH EXTERIOR LIGHTS SWITCH EXTERIOR LIGHTS SYSTEM, FRONT CIGAR LIGHTER FUSE 1 FUSE 2 FUSE 11 FUSE 10 FUSE 12 FUSE 13 FUSE 14 FUSE 15 FUSE 17 FUSE 18 FUSE 22 FUSE 23 FUSE 27 FUSE 3 FUSE 16 FUSE 4 FUSE 5 FUSE 6 7.5 FUSE FUSE 19 FUSE, RELAY BOX (LEFT REAR OF ENG COMPT) FUSE/ RELAY BOX GLOVE COMPARTMENT LAMP, GARAGE DOOR OPENER GRN WIRE GRY WIRE HEADLIGHTS SYSTEM HEATED SEATS CIRCUIT HORN RELAY WIPER STAGE 2 RELAY IGNITION COILS FUSE INSTRUMENT CLUSTER, EXTERIOR LIGHTS SYSTEM INSTRUMENT CLUSTER, MIRRORS SYSTEM LEFT FOOTWELL) MIRRORS SYSTEM NCA WIRE PASSENGER'S SIDE FUSE, RELAY MODULE BOX (RIGHT REAR OF ENG COMPT) PNK PNK WIRE PNK WIRE PNK/RED WIRE PNK/YEL WIRE POLARITY PROTECTION RELAY POWER TOPS SYSTEM REAR WINDOW SUNSHADE SWITCH, NAVIGATION PROCESSOR, RED WIRE SEATS SYSTEM SENSOR SOUND SYSTEMS, CTEL TRANSMITTER/ RECEIVER, NAVIGATION UNIT SOUND SYSTEMS, CTEL TRANSMITTER/ RECEIVER, NAVIGATION UNIT SOUND SYSTEMS STARTER STARTER RELAY STEERING ANGLE STEERING LOCK SUPPLEMENTAL RESTRAINTS SYSTEM TERMINAL TO REAR FUSE BOX (DIAGRAM 2 OF 2) TO TERMINAL ULTRASONIC PTS CONTROL MODULE VIO WIRE WASHER NOZZLE HEATING FUSE WASHER PUMP FUSE WHT WIRE WINDSHIELD WASHER RELAY WIPER STAGE 1 RELAY WIPER STAGE 1-2 FUSE WIPER/ WASHER SYSTEM YEL WIRE

A/C SYSTEM ANTI- CTEL THEFT TRANSMITTER- SYSTEM RECEIVER, EMERGENCY CALL CONTROL MODULE ANTI-LOCK BRAKES SYSTEM BLK WIRE BLU WIRE BLU/YEL WIRE CF RELAY MODULE, DRIVER'S SIDE DOOR CONTROL MODULE DRIVER'S SIDE FUSE, RELAY MODULE BOX FP RELAY PSE MODULE CONTROL MODULE FROM BATTERY (DIAGRAM 1 OF 2) FROM TERMINAL FRONT PASSENGER'S SIDE DOOR CONTROL MODULE FUSE FUSE 1 FUSE 2 FUSE 10 FUSE 11 FUSE 12 FUSE 13 FUSE 28 FUSE 29 FUSE 3 FUSE 37 FUSE 4 FUSE 40 FUSE 41 FUSE 5 FUSE 6 FUSE 7 FUSE 7 FUSE 8 FUSE 8 FUSE 9 FUSE FUSE 38 RELAY BOX (LEFT REAR OF ENG COMPT) GRN WIRE GRY WIRE HIGH PRESSURE/ RETURN PUMP RELAY HORN HCS RELAY PUMP RELAY INSTRUMENT CLUSTER, A/C SYSTEM LEFT FOOTWELL) NCA WIRE OIL COOLER FAN RELAY PNK/WHT WIRE PSE CONTROL MODULE REAR FUSE BOX (RIGHT SIDE OF TRUNK) RED WIRE RED/GRY WIRE RELAY BOX (LEFT REAR OF ENG COMPT) FUSE 30 RESERVE FUSE ROOF CONTROL PANEL CONTROL MODULE SEATS SYSTEM SIGNAL PICK-UP, ACTIVATION MODULE STEERING SNGLE SENSOR TERMINAL TERMINAL BLOCK VIO WIRE W/ IR, ATA W/ IR, ATA W/ RIGHT ESA W/ LEFT ESA WHT WIRE YEL WIRE

1 2 4 CAN L CAN H 1 3 1 B+ GROUND 2 3 4 2 B+ GROUND B+ 2 4 9 14 18 3 IR D GROUND CAN L IR U+ CAN H 6 1 SW IN BLK WIRE BLU WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/RED WIRE BRN/WHT WIRE CAN CONNECTOR COCKPIT SWITCH GROUP COMPUTER DATA LINES DRIVER SIDE DOOR CONTROL MODULE FUSE 17 FUSE 2 FUSE 3 FUSE 4 FUSE 8 FUSE/ RELAY BOX (LEFT REAR OF ENGINE COMPT) GRN WIRE GRY WIRE HOT AT ALL TIMES LEFT FRONT DOOR IR RECEIVER LEFT FRONT DOOR LOCK/ UNLOCK SWITCH LEFT FRONT DOOR SWITCH LEFT REAR DOOR SWITCH LF UNLOCK LF LOCK LOCK UNLK NCA WIRE PASSENGER SIDE DOOR CONTROL MODULE PNEUMATIC SYSTEM EQUIPMENT (PSE) CONTROL MODULE (RIGHT REAR SIDE OF TRUNK) REAR FUSE BOX (RIGHT SIDE OF TRUNK) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RF UNLOCK RF LOCK RIGHT FRONT DOOR IR RECEIVER RIGHT FRONT DOOR LOCK/ UNLOCK SWITCH RIGHT FRONT DOOR SWITCH RIGHT REAR DOOR SWITCH SIGNAL PICKUP AND ACTIVATION MODULE TRUNK LID LOCK SWITCH TRUNK RELEASE SWITCH UNLK LOCK WHT WIRE WHT/GRN WIRE YEL WIRE