Smart Fortwo II (2007-2015) nca Wiring diagrams

1 2 3 4 USB GND USB- USB BUS USB+ 1-2, 3-4, 5-6, 7-8) 20 19 18 LIN IN LIN GND SHIELD 4 3 2 1 USB CONNECTION CONNECTOR (W/ EXTERNAL AUDIO SOURCE) ANT SHIELD SHIELD BLK WIRE BLK/GRY WIRE BLU WIRE BLU/BRN WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/PNK WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE ESP CONTROL UNIT (LEFT CENTER OF VEHICLE UNDERCARRIAGE) EXTERNAL AUDIO SOURCE SEPARATION POINT (IF EQUIPPED) FUSE 15 FUSE 20 GPS ANTENNA (CENTER OF DASH) GRN WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/WHT WIRE HAS HOT AT ALL TIMES HOT IN ON OR START LEFT DOOR SOUND SYSTEM TWEETER LEFT DOOR SOUND SYSTEM WOOFER LEFT REAR SPEAKER LEFT TWEETER NCA WIRE PARK SW PARKING BRAKE INDICATOR SWITCH (BASE OF PARKING BRAKE LEVER ASSEMBLY) PNK WIRE RADIO ANTENNA RED WIRE RED/BLU WIRE RED/GRY WIRE RED/YEL WIRE RIGHT DOOR SOUND SYSTEM TWEETER RIGHT DOOR SOUND SYSTEM WOOFER RIGHT REAR SPEAKER RIGHT TWEETER SAM CONTROL UNIT (UNDER LEFT SIDE OF DASH) SHIELD SIG SMART PREMIUM RADIO SOUND AMPLIFIER (RIGHT END OF DASH) SUBWOOFER TRANSMISSIONS SYSTEM VIO WIRE W/ ECE W/O ECE WHT WIRE YEL WIRE YEL/BRN WIRE YEL/WHT WIRE

1 2 3 4 PARK SW 1 2 3 4 USB GND USB- USB BUS USB+ 1 2 3 LIN IN LIN GND SHIELD 1-2, 3-4, 5-6, 7-8) 4 3 2 1 USB CONNECTION CONNECTOR (W/ EXTERNAL AUDIO SOURCE) ANT SHIELD SHIELD BLK WIRE BLK/GRY WIRE BLU WIRE BLU/BRN WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/PNK WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE ESP CONTROL UNIT (LEFT CENTER OF VEHICLE UNDERCARRIAGE) EXTERNAL AUDIO SOURCE SEPARATION POINT (IF EQUIPPED) FUSE 15 FUSE 20 SIDE OF DASH) GPS ANTENNA (CENTER OF DASH) GRN WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/WHT WIRE HAS HOT AT ALL TIMES HOT IN ON OR START LEFT DOOR SOUND SYSTEM TWEETER LEFT DOOR SOUND SYSTEM WOOFER LEFT REAR SPEAKER LEFT TWEETER NCA WIRE PARKING BRAKE INDICATOR SWITCH (BASE OF PARKING BRAKE LEVER ASSEMBLY) PNK WIRE RADIO ANTENNA RED WIRE RED/BLU WIRE RED/YEL WIRE RIGHT DOOR SOUND SYSTEM TWEETER RIGHT DOOR SOUND SYSTEM WOOFER RIGHT REAR SPEAKER RIGHT TWEETER SAM CONTROL UNIT (UNDER LEFT SHIELD SIG SMART PREMIUM RADIO SUBWOOFER TRANSMISSIONS SYSTEM VIO WIRE W/ ECE W/O ECE WHT WIRE YEL WIRE YEL/BRN WIRE YEL/WHT WIRE

AIR BAG OFF INDICATOR LAMP BELT TENSION SENSOR (IN SEAT BELT ANCHOR) BLK WIRE BLK/RED WIRE BLU WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/PNK WIRE BRN/RED WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM D BELT+ D BELT- D TENSI+ D TENSI- D WBAG- D WBAG+ P WBAG+ P WBAG- DRIVER BELT FORCE LIMITER DRIVER SEAT ADJUSTMENT DETECTION SENSOR DRIVER SEAT BELT BUCKLE RESTRAINT SYSTEMS SWITCH DRIVER-SIDE ANCHOR FITTING TENSIONER SQUIB FRONT PASSENGER AIRBAG SHUTOFF SWITCH (IF EQUIPPED) FRONT PASSENGER SEAT BELT BUCKLE RESTRAINT SYSTEMS SWITCH GND GND VREF CAN H GRN/BLK WIRE GRY/VIO WIRE HOT IN RUN OR START SAM FUSE 18 CONTROL UNIT (UNDER LEFT SIDE OF DASH) LEFT WINDOW BAG SQUIB (IF EQUIPPED) NCA WIRE PA OFF PADSW ON PNK STPS DAT STPS WIRE PNK WIRE PYROFUSE RED WIRE RED/BLK WIRE RED/VIO WIRE RED/YEL WIRE RESTRAINTS SYSTEMS CONTROL UNIT (CENTER OF DASH) RIGHT WINDOW BAG SQUIB (IF EQUIPPED) SEAT OCCUPIED RECOGNITION PRESSURE SENSOR (IN SEAT BOTTOM) SIG 31 SIG VREF CAN L 15 VIO WIRE VIO/YEL WIRE WEIGHT SENSING SYSTEM (WSS) CONTROL UNIT (UNDER SEAT) WHT WIRE WHT/BLK WIRE WHT/BRN WIRE WHT/VIO WIRE YEL/BLK WIRE

1 2 3 4 D BAG 1 - D BAG 1 + AIR BAG INDICATOR, WARNING LAMP 9 6 CAN-L CAN-H BF KTB+ BF KTB- 17 18 CAN H CAN L BLK WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/VIO WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM D PR DSI+ DRIVER AIR BAG IGNITION SQUIB 1 DRIVER AIR BAG IGNITION SQUIB 2 DRIVER HEAD/THORAXBAG SENSOR (ON LEFT "B" PILLAR) DRIVER KNEEBAG SQUIB DRIVER REEL TENSIONER SQUIB (OR) LEFT EMERGENCY TENSIONING RETRACTOR SQUIB DRIVER SIDE FRONT ACCELERATION SENSOR (LEFT SIDE OF FRONT BUMPER) FA KTB- FA KTB+ FANFARE HORNS, AIR BAG CLOCK SPRING CONTACT (TOP OF STEERING COLUMN) FRONT PASSENGER AIR BAG SQUIB 1 FRONT PASSENGER AIR BAG SQUIB 2 FRONT PASSENGER HEAD/THORAXBAG SENSOR (ON RIGHT "B" PILLAR) FRONT PASSENGER KNEEBAG SQUIB GF, BF- 9 10 11 12 13 14 D BAG 2 - D BAG 2 + GRN WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/VIO WIRE GS, FA- (OR D-PRET -) GS, FA+ (OR D-PRET +) GF, BF+ (OR D-PRET +) INSTRUMENT CLUSTER NCA WIRE PASSENGER SIDE FRONT ACCELERATION SENSOR (RIGHT SIDE OF FRONT BUMPER) RED/BLK WIRE RED/VIO WIRE RESTRAINTS SYSTEMS CONTROL UNIT (CENTER OF DASH) SEAT BELT WARNING LAMP VIO WIRE VIO/BLU WIRE WHT WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/VIO WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE

6 9 CAN H CAN L ADDITIONAL INSTRUMENTS BLK/BLU WIRE BLK/GRN WIRE BLK/GRY WIRE BLU/GRY WIRE BRN WIRE BRN/BLU WIRE COMPUTER DATA LINES SYSTEM COUPE FRONT WIPER RELAY FUSE FUSE 12 GRN WIRE GRN/BLU WIRE GRN/RED WIRE GRN/WHT WIRE GRY/BRN WIRE HOT AT ALL TIMES HOT IN ON OR START INSTRUMENT CLUSTER LIN NCA WIRE RAIN SENSOR/ LIGHT SENSOR (IF EQUIPPED) (TOP CENTER OF WINDSHIELD) REAR WIPER RELAY RED/GRN WIRE RED/WHT WIRE SAM CONTROL UNIT (UNDER LEFT SIDE OF DASH) TAILGATE WIPER MOTOR (COUPE) (TOP CENTER OF TAILGATE) VIO/BLU WIRE WINDSHIELD WASHER FLUID PUMP (ON WASHER FLUID RESERVOIR) WIPER MOTOR (CENTER REAR OF FRONT COMPT) WIPER SWITCH YEL WIRE