Mercedes-Benz S-class W140 (1991-1998) base module Wiring diagrams

ABS CONTROL UNIT ABS/ASR CONTROL UNIT BASE MODULE BLK WIRE BLK/GRN/RED WIRE BLK/YEL WIRE BLK/YEL/RED WIRE BLU WIRE BLU/GRN (OR BLK/GRN/VIO) WIRE BLU/GRN WIRE BLU/YEL WIRE BRN WIRE BRN/GRN WIRE DATA LINK CONNECTOR (TOP OF MODULE BOX) GRN WIRE NCA WIRE RED WIRE SPEED SENSITIVE POWER STEERING CONTROL UNIT SPEED SENSITIVE POWER STEERING P-VALVE VIO WIRE W/ TRACTION CONTROL W/O TRACTION CONTROL YEL WIRE

17/2 17/1 32/1 20/2 32/2 47 -1 47 -2 74/2 74/1 71/2 20/1 A/C SYSTEM BLOWER UNIT ABS/ASR HYDRAULIC UNIT ACCY AIRBAG INDICATOR ANTI- THEFT ALARM SYSTEM, INFRARED REMOTE CONTROL, REAR HEATED SEATS ANTI-THEFT ALARM SYSTEM, INFRARED REMOTE CONTROL, REAR HEAD RESTRAINTS BASE MODULE BATTERY BLK WIRE BLU WIRE BRN WIRE CANADA CENTRAL LOCKING, CLOSING ASSIST CONVENIENCE FEATURE DAYTIME RUNNING LAMPS ELECTROLYTIC CAPACITOR ETS/SPS CONTROL MODULE FRONT CIGAR LIGHTER FUEL PUMPS FUSE 11 FUSE 12 FUSE 15 FUSE 16 FUSE 16 FUSE 13 FUSE 14 FUSE 15 FUSE 17 FUSE 1 FUSE 2 FUSE 22 FUSE 3 FUSE 4 (RIGHT FRONT OF LUGGAGE COMPART- MENT) (NOT USED) FUSE 34 FUSE 35 FUSE 5 FUSE 2 FUSE 4 FUSE 5 FUSE 6 FUSE 7 FUSE 9 FUSE 10 FUSE 6 (LEFT REAR OF ENGINE COMPART- MENT) FUSE BOX GRN WIRE GRN/BLK WIRE GRY WIRE HEATED REAR WINDOW HEATED SEATS HEATED SEATS, DEFOGGER, RELAY MODULE, SEAT BELT EXTENDER IGNITION/ STARTER SWITCH INFRARED CENTRAL LOCKING MAXI FUSE BOX NCA WIRE OFF PNK WIRE PNK/ PNK/ PNK/ TO FUSE BOX PNK/ WIRE PREGLOW TIME-LIMIT RELAY RADIO SOUND SYSTEM: TUNER, AMPLIFIER REAR CIGAR LIGHTER REAR CLIMATE CONTROL REAR FUSE BOX REAR ILLUMINATED VANITY MIRROR POWER WINDOWS REAR WINDOW SUNSHIELD, CONVENIENCE SYSTEM SRS CONTROL UNIT RED WIRE RUN WIRE SEATBELT WARNING MODULE SLIDING/ POP-UP ROOF STARTER LOCK-OUT/ BACK-UP LAMP RELAY SELECTOR LEVER POSITION RECOGNITION FUSE 3 TELE- PHONE TERMINAL TERMINAL BLOCK TERMINAL BLOCK X/4 TO COMBINATION SWITCH (DIAGRAM 2 OF 2) TO EXTERIOR LAMP SWITCH TO FUSE BOX, (DIAGRAM 2 OF 2) TO TERMINAL BLOCK (DIAGRAM 2 OF 2) VIO WIRE WHT WIRE WIPER MOTOR AUXILIARY FAN RELAY WIPER RELAY, WASHER PUMP, COMBINATION RELAY, REAR WINDOW DEFOGGER SWITCH YEL WIRE YEL/BLK WIRE

BASE MODULE BLK WIRE BLK/RED WIRE BLK/RED/WHT WIRE BLK/RED/YEL WIRE BLK/YEL WIRE BLU WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/GRN/VIO WIRE BRN/RED/GRN WIRE BRN/YEL WIRE CHECK ENGINE LIGHT COMPUTER DATA LINES CRUISE CONTROL SYSTEM DATA LINK CONNECTOR (DTC READOUT) (IN RIGHT COMPONENT COMPT.) DIAGNOSTIC MODULE (OBD II) SCAN TOOL CONNECTOR DIAGNOSTIC MODULE (OBD-II) DIAGNOSTIC MODULE PRESSURE SENSOR ENGINE CONTROL MODULE (HFM-SFI) (RIGHT FOOT- WELL) ETS/SPS CONTROL MODULE FUEL PUMP 1 FUEL PUMP RELAY MODULE FUSE 17 FUSE BOX FUSE 25 GRN WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE GRY/YEL WIRE HEATER RELAY MODULE HOT AT ALL TIMES HOT IN RUN OR START IGNITION SWITCH INSTRU- MENT CLUSTER SYSTEM INSTRUMENT CLUSTER INSTRUMENT CLUSTER SYSTEM LOCK P/N PURGE CONTROL VALVE PURGE- FLOW SWITCHOVER VALVE REAR FUSE BOX FUSE 13 RED WIRE RED/BLU WIRE RED/BLU/BLK WIRE RED/BLU/WHT WIRE RED/GRN WIRE RED/WHT WIRE RUN WIRE STARTER STARTER LOCK-OUT/ BACKUP LAMP SWITCH STOP LAMP SWITCH TERMINAL BLOCK TRANSMISSION CONTROL MODULE TRANSMISSION OVERLOAD PROTECTION SWITCH UPSHIFT DELAY SWITCH- OVER VALVE VIO WIRE VIO/BLU WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/YEL WIRE YEL WIRE YEL/BLK/GRN WIRE YEL/BLU WIRE YEL/RED WIRE YEL/VIO WIRE

"CHECK ENGINE" MIL BASE MODULE BLK/BLU WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/RED WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLK/YEL/RED WIRE BRN WIRE BRN/RED/GRN WIRE BRN/WHT WIRE DM PRESSURE SENSOR FUSE 19 FUSE AND RELAY BOX GRN/BLK WIRE HOT AT ALL TIMES HOT AT ALL TIMES TERMINAL BLOCK 2 30 IGNITION COILS IGNITION SWITCH INSTRUMENT CLUSTER OFF PNK/GRN/BLK WIRE PURGE CONTROL VALVE RED WIRE RED/BLU WIRE RED/BLU/BLK WIRE RED/BLU/YEL WIRE RED/GRN WIRE RED/GRN/BLK WIRE RED/YEL WIRE RUN WIRE TERMINAL BLOCK YEL WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/WHT WIRE

"CHECK ENGINE" MIL BASE MODULE BLK/BLU WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/RED WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLK/YEL/RED WIRE BRN WIRE BRN/RED/GRN WIRE BRN/WHT WIRE DM PRESSURE SENSOR FUSE 19 FUSE AND RELAY BOX GRN/BLK WIRE HOT AT ALL TIMES HOT AT ALL TIMES TERMINAL BLOCK 2 30 IGNITION COILS IGNITION SWITCH INSTRUMENT CLUSTER OFF PNK/GRN/BLK WIRE PURGE CONTROL VALVE RED WIRE RED/BLU WIRE RED/BLU/BLK WIRE RED/BLU/YEL WIRE RED/GRN WIRE RED/GRN/BLK WIRE RED/YEL WIRE RUN WIRE TERMINAL BLOCK YEL WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/WHT WIRE