Mercedes-Benz S-class W221 (2005-2009) emergency call system control unit Wiring diagrams

1 2 3 4 30 31 CAN-D H CAN-D L 5 10 CAN-G L CAN-G H 6 7 8 9 10 11 12 13 14 CAN-G H CAN-G L BRN WIRE BRN/RED WIRE CAN C (-) CAN C (+) CAN-D H CAN-D L CAN-F H CAN-F L CAN-E H CAN-E L CAN-B H CAN-B L CAN-G H CAN-G L CAN-E H CAN-E L CENTRAL GATEWAY CONTROL MODULE DATA LINK CONNECTOR (UNDER LEFT END OF DASH) ELECTRIC PARKING BRAKE CONTROL UNIT EMERGENCY CALL SYSTEM CONTROL UNIT GRN WIRE GRN/WHT WIRE GRY WIRE GRY/WHT WIRE HIGH/LOW BUS CIRCUIT HOT AT ALL TIMES FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE FUSE 38 HOT AT ALL TIMES FUSE 36 RED WIRE RED/GRN WIRE YEL WIRE YEL/WHT WIRE

ANT ANTENNA SPLITTER BLK WIRE BRN WIRE BRN/BLK WIRE BRN/GRY WIRE COMPUTER DATA LINES SYSTEM CTEL ANTENNA (AT REAR CENTER OF ROOF) EC LED TDC LED IC LED ECS ICS ICS CRASH EMERGENCY CALL SYSTEM ANTENNA SPLITTER EMERGENCY CALL SYSTEM CONTROL UNIT EMERGENCY CALL SYSTEM LEFT BACKUP ANTENNA EMERGENCY CALL SYSTEM RIGHT BACKUP ANTENNA FREQUENCY SWITCHOVER CONTROL MODULE FUSE 138 W/ FUSE, RELAY MODULE GRN WIRE GRN/RED WIRE GRY WIRE GRY/RED WIRE GRY/WHT WIRE HOT AT ALL TIMES VEHICLE POWER SUPPLY FUSE 10 CONTROL UNIT HOT W/ CIRCUIT LSP + CAN-D H CAN-D L MIC SHIELD MIC MUTE NCA WIRE ORG/ WIRE REAR SAM CONTROL MODULE RED WIRE SOUND SYSTEMS UHI PORTABLE CTEL HOLDER (UNIVERSAL HANDY INTERFACE) VIO WIRE WHT WIRE WHT/YEL WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/PNK WIRE YEL/RED WIRE

1 2 (W/ FRONT ROLLER SUN BLIND) (W/ FRONT ROLLER SUN BLIND) 31 30 1 2 3 4 5 6 7 8 9 10 11 12 FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE 1 2 3 4 5 6 7 8 ALS SER 1 2 3 4 5 6 7 8 MOTOR + MOTOR - HS 1 HS 2 HS UB 31 1 2 3 4 5 6 7 8 MOTOR + MOTOR - HS 2 HS UB HS 1 31 1 2 3 4 5 CAN-B L 31 LL HR 31 DATA 30 31 AMBIENT LAMP AUTOMATIC DIMMING MIRROR BACK AUTOMATIC DIMMING INTERIOR REARVIEW MIRROR SENSOR BLK WIRE BLU WIRE BRN WIRE BRN/RED WIRE CAN-B H 31 30 COMPUTER DATA LINES SYSTEM DOOR CONTACT ON/OFF SWITCH ELECTRIC PARKING BRAKE SWITCH EMERGENCY CALL SYSTEM CONTROL UNIT FLAT WIRE FLAT WIRE FLAT WIRE 3 2 1 FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE FLAT WIRE FORWARD AUTOMATIC DIMMING INTERIOR REARVIEW MIRROR SENSOR FRONT DOME LAMP FRONT DOME LAMP SWITCH FRONT SAM CONTROL MODULE W/ FUSE/ RELAY MODULE FUSE 126 FUSE 129 W/ FUSE, RELAY MODULE GARAGE DOOR OPENER INDICATOR LAMP GARAGE DOOR OPENER PUSHBUTTON 1 GARAGE DOOR OPENER PUSHBUTTON 2 GARAGE DOOR OPENER PUSHBUTTON 3 GARAGE DOOR OPENER TRANSMITTER UNIT GRN WIRE GRY/BLU WIRE HOT AT ALL TIMES INTERIOR REARVIEW MIRROR UNIT LEFT FRONT READING LAMP SWITCH LEFT READING LAMP LL HR MB-INFO, TELEDIAGNOSIS BUTTON GROUP NCA WIRE OVERHEAD CONTROL PANEL CONTROL MODULE (CENTER FRONT OF ROOF) POWER TOPS SYSTEM RAIN/LIGHT SENSOR REAR DOME LAMP, SWITCH REAR ROLLER SUN BLIND SWITCH REAR SAM CONTROL MODULE RED WIRE RIGHT FRONT READING LAMP SWITCH RIGHT READING LAMP ROOF SWITCH SOS PUSHBUTTON SWITCH VIO WIRE YEL WIRE YEL/GRN WIRE YEL/PNK WIRE

AC RECIRCULATION UNIT AIR SUSPENSION COMPRESSOR RELAY BATTERY COUPLING RELAY BLK WIRE BRN WIRE CENTRAL GATEWAY CONTROL MODULE DATA LINK CONNECTOR ELECTRIC SUCTION FAN ENGINE, A/C W/ INTEGRATED RELAY MODULE EMERGENCY CALL SYSTEM CONTROL UNIT ESP CONTROL MODULE FROM FRONT PREFUSE (DIAGRAM 1 OF 4) FRONT PREFUSE FRONT SAM CONTROL MODULE W/ FUSE/ RELAY MODULE FUSE 1 FUSE 10 FUSE 2 FUSE 3 FUSE 29 TO CHASSIS CIRCUIT 87 RELAY (DIAGRAM 3 OF 4) FUSE 3 FUSE 36 FAN WIPER PARK RELAY HEATER MODULE RELAY FUSE 38 FUSE 37 FUSE 39 TO CIRCUIT 15 RELAY (DIAGRAM 4 OF 4) FUSE 4 FUSE 40 AIR ENGINE PUMP CIRCUIT 87 RELAY RELAY FUSE 5 FUSE 5 FUSE 8 FUSE 54 FUSE 6 FUSE 7 FUSE 8 FUSE 9 GENERATOR HEATED WINDSHIELD CONTROL MODULE INSTRUMENT CLUSTER ON-BOARD ELECTRICAL NETWORK LINE PYROFUSE ON-BOARD ELECTRICAL NETWORK LINE PYROFUSE TEMPERATURE SENSOR ON-BOARD ELECTRICAL SYSTEM BATTERY PNK/RED WIRE QUIESCENT CURRENT CUTOUT RELAY RED WIRE RED/BLK WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RELAY (DIAGRAM 4 OF 4) STARTER STARTER BATTERY STARTER CIRCUIT 15 RELAY TO EIS (EZS) CONTROL UNIT (DIAGRAM 4 OF 4) TO FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (DIAGRAM 1 OF 4) TO FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (DIAGRAM 3 OF 4) TO LEFT INSTRUMENT PANEL FUSE BOX (DIAGRAM 3 OF 4) TO REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (DIAGRAM 2 OF 4) TO REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE (DIAGRAM 3 OF 4) TO RIGHT INSTRUMENT PANEL FUSE BOX (DIAGRAM 2 OF 4) TO SPECIAL PROTECTION VEHICLE ADDITIONAL FUSE HOLDER (DIAGRAM 2 OF 4) UPPER CONTROL PANEL CONTROL MODULE VEHICLE POWER SUPPLY CONTROL UNIT YEL/RED WIRE

BLK WIRE BLK/WHT WIRE BRN WIRE BRN/RED WIRE CIRCUIT CIRCUIT 15 RELAY DRIVER NECK- PRO HEAD RESTRAINT SOLENOID SEPARATION POINT EIS (EZS) CONTROL MODULE EMERGENCY CALL SYSTEM CONTROL UNIT FAN RELAY MODULE FROM FRONT SAM CONTROL MODULE W/ FUSE, RELAY MODULE (DIAGRAM 1 OF 4) FROM FUSE FROM FUSE 130 (DIAGRAM 2 OF 4) FROM FUSE 39 (DIAGRAM 1 OF 4) FROM FUSE 40 (DIAGRAM 1 OF 4) FROM FUSE 64 (DIAGRAM 4 OF 4) FUSE FRONT CIGAR LIGHTER FRONT PASSENGER NECK-PRO HEAD RESTRAINT SOLENOID SEPARATION POINT FRONT SAM CONTROL MODULE W/ FUSE/ RELAY MODULE FUSE FUSE 137 FUSE 64 FUSE FUSE FUSE FUSE FUSE FUSE GRN WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLU WIRE INSTRUMENT CLUSTER LEFT FRONT HEADLAMP UNIT MASTER WIPER MOTOR ME-SFI (ME) CONTROL MODULE NCA WIRE PNK/BLU WIRE PNK/GRN WIRE PNK/RED WIRE RADAR SENSOR CONTROL UNIT (SGR) REAR SAM CONTROL MODULE W/ FUSE, RELAY MODULE RED WIRE RED/BLK WIRE RED/GRN WIRE RELAY RELAY FUSE 138 RESTRAINT SYSTEM CONTROL MODULE RIGHT FRONT HEADLAMP UNIT SLAVE WIPER MOTOR TO FUSE 61 (DIAGRAM 4 OF 4) VIO WIRE VOLUME CONTROL INTERMEDIATE CONNECTOR YEL/GRY WIRE YEL/WHT WIRE

1 2 3 31 LIN-BUS 30 1 2 3 4 5 6 7 8 31 PROGKEY CAN-A L WBS-OUT 30 CAN-A H WBS-IN WBS-LED 13 3 CAN-A L CAN-A H ANTENNA SPLITTER BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/RED WIRE BUTTON MUTE BUTTON "ON" CAN B H CAN B L CAN D H CAN D L COMAND CONTROL UNIT COMPUTER DATA LINES SYSTEM DISC/RADIO QUICK VOLUME SELECT CONTROL BUTTON EMERGENCY CALL SYSTEM CONTROL UNIT FREELY TURN/ PROGRAMM- PUSH ABLE CONTROL BUTTON FRONT CENTRAL OPERATING UNIT GPS ANTENNA (AT REAR CENTER OF ROOF) GRN WIRE GRY WIRE GRY/WHT WIRE HAZARD BUTTON WARNING "BACK" SYSTEM BUTTON HEAD TRANSMISSION RESTRAINT MODES FOLDING BUTTON BUTTON NCA WIRE PORTABLE CTEL ANTENNA AMPLIFIER RED WIRE RED/WHT WIRE SOUND AMPLIFIER MICROPHONE TELEPHONE KEYPAD UHI PORTABLE CTEL HOLDER (UNIVERSAL HANDY INTERFACE) UNIVERSAL PORTABLE CTEL INTERFACE (UPCI (UHI)) CONTROL MODULE UPPER CONTROL PANEL MODULE VIO WIRE WHT WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 MIC 1 1 2 MOST MOST IN MOST OUT MOST DATA BUS CIRCUIT 6 7 CAN-D H CAN-D L BRN WIRE COMPUTER DATA LINES SYSTEM EMERGENCY CALL SYSTEM CONTROL UNIT GRN WIRE GRY WIRE GRY/WHT WIRE HANDS-FREE SYSTEM MICROPHONE GROUP HOT AT ALL TIMES REAR SAM CONTROL MODULE FUSE W/ FUSE, RELAY MODULE MIC 1+ MIC GND MIC 2 MIC SHIELD PNK WIRE MIC SHIELD MOST DATA BUS CIRCUIT MOST WAKE UP 31 NCA WIRE NOT USED NOT USED ORG/ WIRE PNK WIRE RED WIRE VOICE CONTROL SYSTEM (VCS (SBS)) CONTROL UNIT