Mercedes-Benz C-class W203/S203/CL203 (2000-2004) except cl models Wiring diagrams

1 2 3 4 5 6 BR RELEASE BR RELEASE 1 2 3 4 5 6 HH (-) HH (+) 1 2 3 4 5 6 HV (-) HV (+) 1 2 3 4 5 6 LH (-) LH (+) 1 2 3 6 7 8 ESA SW ESA SW ESA SW ESA SW ESA SW ESA SW 1 2 H RELEASE H RELEASE 2 1 CAN-B H CAN-B L 2 3 4 LK (+) HEAD (+) (+) 2 MEMORY LOCATION 5 6 MHEAD (-) MLK (-) 6 7 5 CAN-B H CAN-B L 30 BACKREST BLK WIRE BLK/YEL WIRE BLU WIRE BRN WIRE BRN/GRY WIRE BRN/RED WIRE CAN B L CAN B H CL MODELS COMPUTER DATA LINES SYSTEM DRIVER FRONT SEAT ADJUSTMENT CONTROL MODULE (UNDER SEAT) DRIVER SEAT BACKREST ADJUSTMENT MOTOR DRIVER SEAT BACKREST RELEASE MICROSWITCH (CL MODELS) DRIVER SEAT FORWARD/BACK ADJUSTMENT MOTOR DRIVER SEAT FRONT UP/DOWN ADJUSTMENT MOTOR DRIVER SEAT HEAD RESTRAINT RAISE/LOWER ADJUSTMENT MOTOR DRIVER SEAT HEIGHT RELEASE MICROSWITCH (CL MODELS) DRIVER SEAT REAR UP/DOWN ADJUSTMENT MOTOR EXCEPT CL MODELS FRONT (RAISE/ LOWER) FRONT PRE-FUSE BOX (RIGHT REAR OF ENGINE COMPT) FUSE 2 FUSE 21 FUSE 29 FUSE 31 GRY/BLK WIRE GRY/GRN WIRE GRY/YEL WIRE HEAD RESTRAINT (RAISE/ LOWER) HOT AT ALL TIMES INTERIOR FUSE BOX (UNDER LEFT END OF DASH) FUSE 27 LEFT FRONT DOOR CONTROL MODULE LEFT FRONT DOOR ESA SWITCH GROUP MEMORY STORE MEMORY SYSTEMS (STEERING COLUMN CIRCUIT) MHH (+) MHH (-) MHV (+) MHV (-) MLH (+) MLH (-) NCA WIRE REAR (RAISE/ LOWER) REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK) RED WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE SEAT (FORWARD/ BACK) STEERING COLUMN LOCATION (RAISE/LOWER) (FORWARD/BACK) VIO WIRE WHT WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE

1 2 3 4 5 6 BR RELEASE BR RELEASE 1 2 3 4 5 6 HH (-) HH (+) 1 2 3 4 5 6 HV (-) HV (+) 1 2 3 4 5 6 LH (-) LH (+) 1 2 3 6 7 8 ESA SW ESA SW ESA SW ESA SW ESA SW ESA SW 1 2 H RELEASE H RELEASE 2 1 CAN-B H CAN-B L 2 3 4 LK (+) HEAD (+) (+) 5 6 MHEAD (-) MLK (-) 6 7 5 CAN-B H CAN-B L 30 BACKREST BLK WIRE BLK/PNK WIRE BLU WIRE BRN WIRE BRN/GRY WIRE BRN/RED WIRE CAN B L CAN B H CL MODELS COMPUTER DATA LINES SYSTEM EXCEPT CL MODELS FRONT (RAISE/ LOWER) FRONT PRE-FUSE BOX (RIGHT REAR OF ENGINE COMPT) FUSE 2 FUSE 22 FUSE 38 FUSE 40 GRN WIRE HEAD RESTRAINT (RAISE/ LOWER) HOT AT ALL TIMES INTERIOR FUSE BOX (UNDER LEFT END OF DASH) MEMORY LOCATION MEMORY STORE MHH (+) MHH (-) MHV (+) MHV (-) MLH (+) MLH (-) NCA WIRE PASSENGER FRONT SEAT ADJUSTMENT CONTROL MODULE (UNDER SEAT) PASSENGER SEAT BACKREST RELEASE MICROSWITCH (CL MODELS) PASSENGER SEAT FORWARD/BACK ADJUSTMENT MOTOR PASSENGER SEAT HEAD RESTRAINT RAISE/LOWER ADJUSTMENT MOTOR PASSENGER SEAT HEIGHT RELEASE MICROSWITCH (CL MODELS) PASSENGER SEAT REAR UP/DOWN ADJUSTMENT MOTOR REAR (RAISE/ LOWER) REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK) RED WIRE RED/GRN WIRE RED/WHT WIRE RIGHT FRONT DOOR CONTROL MODULE RIGHT FRONT DOOR ESA SWITCH GROUP SEAT (FORWARD/ BACK) VIO WIRE WHT WIRE

1 2 3 6 7 8 ESA SW ESA SW ESA SW ESA SW ESA SW ESA SW 2 1 CAN-B H CAN-B L 2 MEMORY LOCATION 5 6 7 30 CAN-B H CAN-B L 6 5 8 7 2 CAN-C H CAN-C L CAN-B H CAN-B L 31 BLK WIRE BLK/YEL WIRE BLU WIRE BRN WIRE BRN/GRY WIRE BRN/RED WIRE CAN B L CAN B H CL MODELS COMPUTER DATA LINES SYSTEM DI CONTROL MODULE DRIVER FRONT SEAT ADJUSTMENT CONTROL MODULE (UNDER SEAT) EXCEPT CL MODELS FRONT PRE-FUSE BOX (RIGHT REAR OF ENGINE COMPT) FUSE 2 FUSE 21 FUSE 27 FUSE 29 FUSE 31 GRN WIRE GRN/WHT WIRE GRY/BLK WIRE GRY/GRN WIRE GRY/YEL WIRE HOT AT ALL TIMES INTERIOR FUSE BOX (UNDER LEFT END OF DASH) LEFT FRONT DOOR CONTROL MODULE LEFT FRONT DOOR ESA SWITCH GROUP MEMORY STORE NCA WIRE REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK) RED WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE SCL STEERING COLUMN ADJUSTMENT LOCK INDICATOR SWITCH STEERING COLUMN HEIGHT ADJUSTMENT MOTOR (UP/DOWN) STEERING COLUMN LOCATION (RAISE/LOWER) (FORWARD/BACK) STEERING COLUMN LONGITUDINAL ADJUSTMENT MOTOR (FWD/BACK) VCS SWITCH VIO WIRE WHT WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE

1 2 3 6 7 8 ESA SW ESA SW ESA SW ESA SW ESA SW ESA SW 13 12 10 11 CAN-B H CAN-B L CAN-C H CAN-C L 30 31 2 1 CAN-B H CAN-B L 2 MEMORY LOCATION 4 5 CAN-B L CAN-B H 5 6 7 30 CAN-B H CAN-B L BLK WIRE BLK/YEL WIRE BLU WIRE BRN WIRE BRN/GRY WIRE BRN/RED WIRE CAN B L CAN B H CL MODELS COMPUTER DATA LINES SYSTEM DRIVER FRONT SEAT ADJUSTMENT CONTROL MODULE (UNDER SEAT) EXCEPT CL MODELS FRONT PRE-FUSE BOX (RIGHT REAR OF ENGINE COMPT) FUSE 6 FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT REAR OF ENGINE COMPT) FUSE 2 FUSE 21 FUSE 27 FUSE 29 FUSE 31 FUSE 4 GRN WIRE GRN/WHT WIRE GRY/BLK WIRE GRY/GRN WIRE GRY/YEL WIRE HOT AT ALL TIMES INTERIOR FUSE BOX (UNDER LEFT END OF DASH) LEFT FRONT DOOR CONTROL MODULE LEFT FRONT DOOR ESA SWITCH GROUP MEMORY STORE NCA WIRE PNK/RED WIRE REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (LEFT SIDE OF TRUNK) RED WIRE RED/BLU WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE SCL STEERING COLUMN ADJUSTMENT LOCK INDICATOR SWITCH STEERING COLUMN ADJUSTMENT SWITCH STEERING COLUMN HEIGHT ADJUSTMENT MOTOR (UP/DOWN) STEERING COLUMN LOCATION (RAISE/LOWER) (FORWARD/BACK) STEERING COLUMN LONGITUDINAL ADJUSTMENT MOTOR (FWD/BACK) STEERING COLUMN MODULE VIO WIRE WHT WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE