Mercedes-Benz C-class W203/S203/CL203 (2000-2004) overhead control panel control module Wiring diagrams

1 2 9 10 31 30 CAN L CAN H 2 3 1 2 4 1 30 FZU A-ST 3 4 2 5 6 SIG 4 3 2 30 FZU A-ST 4 5 CAN L CAN H 4 6 LOW BEAM LOW BEAM 6 11 2 12 PARK LAMP TURN LAMP PARK LAMP TURN LAMP 7 8 TURN SIG TURN SIG ALARM SIGNAL HORN AMPLIFIER MODULE ATA HOOD SWITCH ATA INCLINATION SENSOR BLK WIRE BLK/GRN WIRE BLK/WHT WIRE BLU/GRN WIRE BLU/RED WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/PNK WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM COUPE, SEDAN 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 FUSE 8 GRN WIRE GRN/GRY WIRE GRN/YEL WIRE GRY/BLK WIRE GRY/RED WIRE HEADLIGHTS SYSTEM HOOD SW HOT AT ALL TIMES LEFT FRONT DOOR CONTACT SWITCH LEFT REAR DOOR CONTACT SWITCH (SEDAN, WAGON) LOCK PAWL ROTARY TUMBLER SWITCH 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 RED/WHT WIRE RED/YEL WIRE RIGHT FRONT DOOR CONTACT SWITCH RIGHT REAR DOOR CONTACT SWITCH (SEDAN, WAGON) ROOF DRIVE SYSTEM SEDAN, COUPE SEDAN, COUPE WAGON SIG TRUNK LID CENTRAL LOCKING MOTOR TRUNK LID CONTACT SWITCH TRUNK LID EMERGENCY RELEASE SWITCH TRUNK LID EXTERNAL OPERATION SWITCH VIO/BLU WIRE WAGON COUPE WHT WIRE YEL WIRE YEL/BLK WIRE

1 2 3 31 DATA 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 CAN H CAN L 1 2 3 6 4 PRESS/TEMP PRESS/TEMP PRESS/TEMP PRESS/TEMP RESIDUAL HEAT 9 10 COMPUTER DATA LINES SYSTEM CAN L CAN H AAC PUSHBUTTON CONTROL MODULE AIR HUMIDITY SENSOR LEFT DEFROSTER VENT FLAP ACTUATOR BLK/BRN WIRE BLK/WHT WIRE BLOWER MOTOR BLU WIRE BLU/PNK WIRE BLU/RED WIRE BLU/VIO WIRE BRN WIRE BRN/BLU WIRE BRN/RED WIRE BRN/YEL WIRE CAN-L CAN-H COMPUTER DATA LINES SYSTEM COOLANT CIRCULATION PUMP (W/ RESIDUAL ENGINE HEAT UTILIZATION SYSTEM) ELECTRIC SUCTION FAN ENGINE, A/C WITH INTEGRATED CONTROL EVAP SENS FRONT PRE-FUSE BOX (RIGHT REAR OF ENGINE COMPT) FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 30 FUSE 41 FUSE 5 FUSE 51 GRN WIRE GRN/BLU WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/RED WIRE GRY/VIO WIRE HEATING SYSTEMS RECIRC- ULATION UNIT FRESH AIR/RECIRC AIR FLAPS ACTUATOR HEATING SYSTEMS RECIRCULATION UNIT HOT AT ALL TIMES HOT IN RUN OR START IN-CAR TEMPERATURE SENSOR IN-CAR TEMPERATURE SENSOR FSN MOTOR INTERIOR FUSE BOX (UNDER LEFT END OF DASH) LEFT BLENDING AIR FLAP ACTUATOR RIGHT BLENDING AIR FLAP ACTUATOR LEFT FOOTWELL FLAP ACTUATOR LEFT FRESH AIR FLAP ACTUATOR RIGHT FOOTWELL FLAP ACTUATOR LEFT, RIGHT DEFROSTER FLAPS ACTUATOR FRESH AIR FLAPS ACTUATOR LEFT, RIGHT FOOTWELL FLAPS ACTUATOR ME-SFI CONTROL MODULE NCA WIRE OVERHEAD CONTROL PANEL CONTROL MODULE R BLWR SELECT SIG R BLWR SELECT RECIRC UNIT 30 COMMON REAR BLOWER ELECTRONIC SELECTOR WHEEL REAR BLOWER MOTOR REAR BLOWER MOTOR CONTROL MODULE (BELOW REAR OF CENTER CONSOLE) RECIRC UNIT R BLWR CTRL RED WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT DEFROSTER VENT FLAP ACTUATOR RIGHT FRESH AIR FLAP ACTUATOR W/ COMFORT AAC W/ OUTSIDE TEMPERATURE INDICATOR WHT/PNK WIRE WHT/VIO WIRE

1 2 9 10 8 31 30 CAN L CAN H 31 11 12 CAN-B H CAN-B L 4 5 CAN L CAN H 6 7 CAN-B H CAN-B L BLK WIRE BLU/RED WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/PNK WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM CTSY LMP EXCEPT WAGON FRONT DOME 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 FUSE 47 GLOVE COMPARTMENT SWITCH, LAMP HOT AT ALL TIMES HOT IN RUN OR START LEFT FRONT DOOR CONTACT SWITCH LEFT FRONT DOOR CONTROL MODULE LEFT FRONT DOOR ENTRANCE, EXIT LAMP LEFT READING LEFT REAR DOOR CONTACT SWITCH (SEDAN, WAGON) LEFT REAR DOOR CONTROL LEFT REAR DOOR ENTRANCE, EXIT LAMP LEFT VANITY MIRROR LAMP OVERHEAD CONTROL PANEL CONTROL MODULE PNK/RED WIRE REAR DOME REAR DOME LAMP REAR DOME LAMP LEFT TRUNK LAMP REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK) RED WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/YEL WIRE RIGHT FRONT DOOR CONTACT SWITCH RIGHT FRONT DOOR CONTROL MODULE RIGHT FRONT DOOR ENTRANCE, EXIT LAMP RIGHT READING RIGHT REAR DOOR CONTACT SWITCH (SEDAN, WAGON) RIGHT REAR DOOR CONTROL MODULE RIGHT REAR DOOR ENTRANCE, EXIT LAMP RIGHT TRUNK LAMP RIGHT VANITY MIRROR LAMP TRUNK AJAR TRUNK LAMP (EXCEPT WAGON) TRUNK LID CONTACT SWITCH VIO/BLU WIRE WAGON YEL WIRE

1 2 CAN B L CAN B H 1 6 DIM DIM 6 7 CA CAN-C L CAN-C H 6 7 CAN-B H CAN-B L 9 10 2 1 CAN-B L CAN-B H 30 31 AIS 31 AIS AUTO DIM BLU/GRY WIRE BRN WIRE BRN/GRY WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM ELECTRONIC SELECTOR LEVER CONTROL MODULE (AT BASE OF SELECTOR LEVER) FRONT PRE-FUSE BOX (RIGHT REAR OF ENGINE COMPT) FUSE 2 FUSE 21 GRN WIRE GRN/WHT WIRE HOT AT ALL TIMES INTERIOR FUSE BOX (UNDER LEFT END OF DASH) INTERIOR REARVIEW MIRROR UNIT LEFT EXTERIOR MIRROR LEFT FRONT DOOR CONTROL MODULE MIRROR SENSOR (BACK) MIRROR SENSOR (FRONT) AUTO DIM NCA WIRE OVERHEAD CONTROL PANEL CONTROL MODULE PNK/BLK WIRE PNK/RED WIRE REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK) RED WIRE RED/BLU WIRE RED/WHT 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

1 11 CAN-C H CAN-C L 1 2 3 CAN H CAN L 1 2 CAN H CAN L 1 2 CAN-B H CAN-B L 10 11 CAN-C H CAN-C L 10 9 CAN-B H CAN-B L 12 13 CAN-B L CAN-B H 13 12 CAN-C H CAN-C L 16 15 CAN-C H CAN-C L 18 17 CAN B H CAN B L 2 1 CAN L CAN H 2.3L 2.6L, 3.2L 4 3 CAN-B H CAN-B L 4 3 CAN-C L CAN-C H 41 40 CAN C H CAN C L 6 5 CAN-C H CAN-C L 7 6 CAN-C H CAN-C L 8 7 CAN-B H CAN-B L AAC PUSHBUTTON CONTROL MODULE BRAKE BOOSTER VACUUM PUMP CONTROL MODULE BRN WIRE BRN/RED WIRE BRN/WHT WIRE CAN DATABUS ADAPTER CONNECTOR (BEHIND LEFT KICK PANEL) COCKPIT VOLTAGE DISTRIBUTOR CONNECTOR (UNDER LEFT SIDE OF DASH) DI CONTROL MODULE ELECTRONIC SELECTOR LEVER CONTROL MODULE (BASE OF GEAR SELECTOR LEVER) ENGINE CONTROL MODULE (ME-SFI) (LEFT REAR OF ENGINE COMPT) ESP, BAS CONTROL MODULE (LEFT SIDE OF ENGINE COMPT) ETC CONTROL MODULE (W/ A/T) (UNDER RIGHT SIDE OF DASH) FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) GRN WIRE GRN/WHT WIRE INSTRUMENT CLUSTER OVERHEAD CONTROL PANEL CONTROL MODULE STEERING COLUMN MODULE (2002 LATE PROD) (AT TOP OF STEERING COLUMN) STEERING COLUMN MODULE (2002 LATE PRODUCTION) UPPER CONTROL PANEL CONTROL MODULE

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

1 2 3 4 5 RADIO TRK LAMP RHR REL TRK LAMP COMMON 1 2 REAR BLIND REAR BLIND AMP MOD AMP MOD BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/GRN WIRE BRN WIRE BRN/YEL WIRE DOOR LOCKS SYSTEM DOOR LOCKS SYSTEM DOOR LOCKS SYSTEM FUEL CL FUEL CL FUSE 3 FUSE 8 FUSE 9 GRN WIRE GRN/YEL WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/RED WIRE GRY/VIO WIRE GRY/YEL WIRE HOT AT ALL TIMES INTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM LOCK PAWL TRUNK CL CHMSL R LICENSE L LICENSE R WIPER LR BACK LR TURN RR STOP RR BACK RR TURN LR STOP LR PARK NCA WIRE OVERHEAD CONTROL PANEL CONTROL MODULE POWER WINDOWS SYSTEM POWER WINDOWS SYSTEM REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK) RED/BLU WIRE RED/GRN WIRE RED/YEL WIRE RHR (KAF) RELEASE VALVE (LEFT SIDE OF TRUNK) RR PARK RR MARK LR MARK SOUND SYSTEMS INTERIOR LIGHTS SYSTEM SOUND SYSTEMS SOUND SYSTEMS SOUND SYSTEMS TRUNK EMERG TRUNK EXT LOCK PAWL TRUNK SW TRUNK EMERG VIO/BLU WIRE WHT WIRE YEL WIRE YEL/BLU WIRE YEL/GRN WIRE