Smart·Fortwo·2018 Smart Fortwo·Wiring
Wiring diagram

2018 Smart Fortwo — power distribution

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Power distribution

5A 40A N L M 40A 30A 20A K 20A 20A 40A 70A 25A 30A H 30A N/A 60A 10A A 60A B 50A 200A 30A 70A 70A ON BOARD ELECTRICAL SYSTEM BATTERY VEHICLE INTERIOR FUSE & RELAY MODULE COMBUSTION ENGINE FUSE & RELAY MODULE E3 S3 AE E2 E1 AE S2 S1 S4 E2 E1 SBB S3 AA S2 S1 S6 AB S1 S2 S6 A1 A3 S4 S7 E7 E8 S8 E6 E4 S7 AA B AB S5 B A A RED RED WHT RED RED RED RED RED RED RED RED RED/PNK RED/BRN (OR RED/PNK) (OR RED/BLK) (OR RED/BLK) RED/BRN RED/BRN (OR RED/PNK) RED/BRN RED/PNK RED/BRN RED/BRN RED RED RED RED RED/BRN RED/BRN RED/BRN RED RED RED/BRN RED/BRN RED/BRN RED/BRN WHT RED/BRN RED (OR RED) RED RED RED RED RED/BRN RED BATTERY CLAMP FUSE ELECTRICAL FUSE 2B ELECTRICAL FUSE 2A FUSE 1 ELECTRICAL FUSE 3B ELECTRICAL FUSE 3A POWER SUPPLY FUSE & RELAY MODULE RESERVE FUSE 8 FUSE 3 FUSE 9 FUSE 6 FUSE 7 FUSE 4 FUSE 5 FUSE 1 FUSE 2 FUSE 1 FUSE 2 FUSE 7 FUSE 3 FUSE 8 FUSE 4 FUSE 6 (NOT USED) (IF EQUIPPED) (IF EQUIPPED) (W/ TWINAMIC) (ON BATTERY POSITIVE POST) (LEFT REAR OF ENGINE COMPT) (GLOVE COMPT) (BEHIND RIGHT REAR BODY PANEL) HIGH-VOLTAGE CONTROL UNIT BOX ELECTRONIC STABILITY PROGRAM CONTROL UNIT ELECTRICAL POWER STEERING CONTROL UNIT TO VEHICLE INTERIOR FUSE & RELAY MODULE (DIAGRAM 2 OF 4) TO VEHICLE INTERIOR FUSE & RELAY MODULE (DIAGRAM 2 OF 4) TO AIR CONDITIONING BLOWER MOTOR POWER SUPPLY RELAY (DIAGRAM 4 OF 4) SECONDARY AIR INJECTION PUMP RELAY & HIGH VOLTAGE BATTERY HEATER RELAY ELECTRONIC STABILITY PROGRAM CONTROL UNIT ICE COMBUSTION ENGINE COOLING FAN SOLENOID SWITCH & FAN RELAY BRAKE BOOSTER VACUUM PUMP CONTROL UNIT TO VEHICLE INTERIOR FUSE & RELAY MODULE (DIAGRAM 3 OF 4) TO VEHICLE INTERIOR FUSE & RELAY MODULE (DIAGRAM 4 OF 4) FRONT PASSENGER SEAT HEATER CONTROL UNIT DRIVER SEAT HEATER CONTROL UNIT SOFT TOP CONTROL DRIVE UNIT TO BATTERY COOLING SYSTEM COOLANT PUMPS RELAY (DIAGRAM 4 OF 4) TO BATTERY COOLING SYSTEM COOLANT PUMPS RELAY (DIAGRAM 4 OF 4) DOUBLE CLUTCH TRANSMISSION CONTROL UNIT ELECTRIC DRIVE CONTROL UNIT & BATTERY MANAGEMENT SYSTEM CONTROL UNIT ELECTRIC VEHICLE DRIVE MOTOR FAN RELAY HIGH-VOLTAGE CHARGER CONTROL UNIT BATTERY (7 KW CHARGER) & HIGH-VOLTAGE CONTROL UNIT BOX
1 2 1 2 1 2 1 20A 20A 5A 5A A 20A 15A 10A 15A 25A 40A 25A B 10A 30A 20A 25A 10A 10A 30A 15A E F 5A C D J ACC RUN START START RUN ACC LOCK START RUN ACC LOCK LOCK P VEHICLE INTERIOR FUSE & RELAY MODULE CENTER SAM CONTROL UNIT VEHICLE INTERIOR FUSE & RELAY MODULE FRONT POWER WINDOW RELAY STARTER RELAY DRIVER SAM CONTROL UNIT 1 6 3 AB S4 S27 S34 E5 E11 S11 E4 E38 E34 AB E26 E14 S14 S26 S25 S24 S5 S38 AA AA S6 S37 S7 E7 E1 E30 E6 B3 S39 E39 E37 S31 S1 1 S29 S28 S30 AA 4 AA 2 1 BB E36 S36 AA A3 AD P1 2 4 7 8 P2 12 2 P2 P1 P2 12 11 9 10 4 6 19 S1 5 8 7 4 (OR PNK/BRN) (OR RED) (OR RED) RED/WHT RED RED/BRN RED/BRN RED/BRN RED/BRN RED/BRN RED/BRN RED/BRN RED/BRN (OR RED) RED/BRN RED/BRN RED/WHT RED/BRN RED/WHT RED RED/WHT RED/WHT RED RED/BRN RED/BRN RED/BRN RED/BRN RED/BRN RED/BRN RED/BRN (OR PNK/BRN) (OR WHT) RED RED/BRN RED/BRN RED RED/BRN RED RED/BRN RED RED RED/BRN YEL/BRN PNK/BRN RED/WHT PNK/WHT RED/BRN PNK/BRN PNK/BRN PNK/BRN PNK/BRN PNK/BRN PNK/BRN PNK/BRN RED/BRN PNK/WHT RED RED (OR WHT) RED/BRN YEL/BRN RED/BRN RED/PNK GRN/WHT WHT BLK/WHT BLK PNK/WHT WHT GRN/WHT BLK/WHT RED/BRN RED/WHT RED/BRN RED RED/WHT RED/BRN RED/BRN RED RED (OR BRN/WHT) FUSE 14 FUSE 38 FUSE 4 FUSE 26 FUSE 24 FUSE 25 FUSE 5 FUSE 34 FUSE 11 FUSE 27 FUSE 7 FUSE 6 FUSE 29 FUSE 30 FUSE 28 FUSE 37 FUSE 1 FUSE 31 FUSE 36 FUSE 39 REAR LUGGAGE CARRIER ELECTRICAL CONNECTOR IGNITION LOCK START/STOP BUTTON (W/ SMART MEDIA SYSTEM), (W/ SMART MEDIA SYSTEM), W/ DIRECT STARTING W/O DIRECT STARTING (IF EQUIPPED) & (IF EQUIPPED) (W/ PREINSTALLATION REAR RACK) W1/3 (GLOVE COMPT) (GLOVE COMPT) (LEFT SIDE OF DASH) SOUND SYSTEM AMPLIFIER CONTROL UNIT DRIVER SAM CONTROL UNIT COMBINATION SWITCH BATTERY SENSOR DIAGNOSTIC CONNECTOR, RADIO, TELEMATICS SERVICES COMMUNICATION MODULE, MULTIMEDIA OPERATING UNIT TO VEHICLE INTERIOR FUSE & RELAY MODULE (DIAGRAM 3 OF 4) FROM BATTERY CLAMP FUSE (DIAGRAM 1 OF 4) SMART RADIO MULTIMEDIA NAVIGATOR TO AIR CONDITIONING BLOWER MOTOR POWER SUPPLY RELAY (DIAGRAM 4 OF 4) AUDIO GATEWAY CONTROL UNIT, WINDSHIELD READING SYSTEM CONTROL UNIT, CARD READER POWERLINE GATEWAY CONTROL UNIT COMBINATION SWITCH ADDITIONAL INSTRUMENTS CENTER SAM CONTROL UNIT TO VEHICLE INTERIOR FUSE & RELAY MODULE (DIAGRAM 3 OF 4) INSTRUMENT CLUSTER FROM BATTERY CLAMP FUSE (DIAGRAM 1 OF 4) LIGHTS SYSTEM INTERIOR ELECTRONIC SELECTOR LEVER MODULE CONTROL UNIT FROM VEHICLE INTERIOR FUSE & RELAY MODULE (DIAGRAM 3 OF 4) TO VEHICLE INTERIOR FUSE & RELAY MODULE (DIAGRAM 3 OF 4) TO VEHICLE INTERIOR FUSE & RELAY MODULE (DIAGRAM 3 OF 4)
10A J H N/A N/A N/A N/A N/A 10A 30A 5A 15A 15A 5A 5A 5A F N/A N/A N/A N/A N/A N/A C 15A E 15A D 10A 5A 3A 5A VEHICLE INTERIOR FUSE & RELAY MODULE FRONT POWER WINDOW RELAY HEATED REAR WINDOW/OUTSIDE MIRRORS RELAY HEATED REAR WINDOW/OUTSIDE MIRRORS RELAY FANFARE HORN RELAY S2 E2 3 1 2 A3 AA AE E4 S4 S3 E3 S1 E1 E3 S3 E9 S9 AB AA A1 S18 S17 S15 S16 AA S35 S33 S23 E23 E33 E35 E16 S5 E5 AB AA S32 E32 E13 S13 S9 E9 E4 S4 S3 E3 E2 S2 B3 B1 AD S12 AA E8 E12 S8 B1 S21 S22 S20 S29 E20 YEL/WHT YEL/BRN YEL/BRN YEL/BRN RED/WHT BLK/BRN BLK/BRN YEL/BRN YEL/BRN RED (OR YEL) YEL/WHT YEL YEL YEL YEL YEL YEL/BRN YEL YEL/WHT YEL/BRN YEL/BRN YEL/BRN YEL/BRN YEL/BRN (OR YEL/WHT) YEL/BRN YEL/BRN RED RED RED/WHT RED/WHT RED BLK YEL/BRN YEL PNK/BRN PNK/BRN (OR YEL) YEL/BRN (OR PNK/BRN) (OR YEL) YEL (OR RED/BRN) (OR RED) RED/WHT RED RED RED RED/WHT RED RED/WHT RED/PNK BLK/BRN RESERVE FUSE 13 RESERVE FUSE 32 RESERVE FUSE 3 RESERVE FUSE 2 RESERVE FUSE 4 RESERVE FUSE 9 FUSE 19 FUSE 22 FUSE 20 FUSE 21 FUSE 15 FUSE 16 FUSE 17 FUSE 18 FUSE 5 FUSE 2 FUSE 35 FUSE 33 FUSE 23 RESERVE FUSE 3 RESERVE FUSE 4 RESERVE FUSE 1 RESERVE FUSE 3 RESERVE FUSE 9 FUSE 8 FUSE 12 FRONT CIGARETTE LIGHTER W/ ASHTRAY ILLUMINATION (NOT USED) (ELECTRIC), (W/ TWINAMIC) (IF EQUIPPED) (IF EQUIPPED), (IF EQUIPPED), (IF EQUIPPED) (W/ COLLISION WARNING SYSTEM), (W/ TWINAMIC), (W/ REAR PARKING ASSIST), (W/ ACTIVE LANE KEEPING ASSIST) & (W/ ANTI-THEFT ALARM SYSTEM) (NOT USED) W/O ANTI-THEFT ALARM SYSTEM (CONVERTIBLE), (NOT USED) (CONVERTIBLE), (W/ SMOKER SET) W1/3 (GLOVE COMPT) (LEFT SIDE OF DASH) ELECTRIC VEHICLE SOUND GENERATOR RAIN/LIGHT SENSOR, FRONT DOME LAMP W/ READING LAMPS, LOAD COMPARTMENT LAMP, FRONT PASSENGER AIR BAG WARNING INDICATOR, CLIMATE CONTROL UNIT, CLIMATE CONTROL OPERATING UNIT, VEHICLE INTERIOR HUMIDITY & TEMPERATURE SENSOR ELECTRONIC STABILITY PROGRAM CONTROL UNIT, TRANSPONDER COIL & STOP LAMP SWITCH STEERING WHEEL ANGLE SENSOR OUTSIDE MIRROR ADJUSTMENT SWITCH DOUBLE CLUTCH TRANSMISSION CONTROL UNIT FROM CENTER SAM CONTROL UNIT (DIAGRAM 2 OF 4) TO IGNITION LOCK (DIAGRAM 2 OF 4) STOP LAMP SWITCH SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT ELECTRICAL POWER STEERING CONTROL UNIT DRIVER SAM CONTROL UNIT & CENTER SAM CONTROL UNIT ELECTRIC DRIVE CONTROL UNIT FRONT PASSENGER SEAT HEATER CONTROL UNIT WEIGHT SENSING SYSTEM (WSS) CONTROL UNIT DRIVER SEAT HEATER CONTROL UNIT CENTER SAM CONTROL UNIT, ELECTRONIC SELECTOR LEVER MODULE CONTROL UNIT DRIVER SIDE POWER WINDOW SWITCH GROUP FROM IGNITION LOCK (DIAGRAM 2 OF 4) DISTANCE WARNING FUNCTION GATEWAY PARKING SYSTEM CONTROL UNIT BRAKE BOOSTER VACUUM PUMP CONTROL UNIT, POWER ELECTRONIC CONTROL UNIT & HIGH VOLTAGE CONTROL UNIT BOX WINDSHIELD WIPER SYSTEM SWITCH & BACKUP LIGHT ACTIVATION/ IDLE RECOGNITION SWITCH STEERING WHEEL CLOCK SPRING CONTACT & DISTANCE WARNING FUNCTION W/ RADAR SENSOR CONTROLLER UNIT MULTI-FUNCTION CAMERA LANE KEEPING ASSIST BUTTON RADIO CENTER SAM CONTROL UNIT GROUND DISTRIBUTION SYSTEM INTERIOR PROTECTION SENSOR 1 FROM VEHICLE INTERIOR FUSE & RELAY MODULE (DIAGRAM 2 OF 4) FROM POWER SUPPLY FUSE & RELAY MODULE (DIAGRAM 1 OF 4) FROM IGNITION LOCK (DIAGRAM 2 OF 4) INTERIOR PROTECTION SENSOR 2 ALARM SIREN, ATA (EDW) CONTROL UNIT & TOW-AWAY PROTECTION SENSOR
N 10A P 40A 15A 15A 15A L M K 5A 25A 15A COMBUSTION ENGINE FUSE & RELAY MODULE VEHICLE INTERIOR FUSE & RELAY MODULE STEERING WHEEL HEATER RELAY E1 AB S1 S39 AA E39 AA 2 5 1 3 4 S5 S2 S8 E5 E2 E8 A4 A5 A2 AD A3 A1 E10 S10 S8 S9 AB E8 E9 AB (OR RED) RED/BRN RED/BRN RED RED RED/BRN RED RED RED PNK RED/BRN WHT/BRN GRN/BRN GRN/WHT GRN/BRN GRN GRN GRN GRN/BRN GRN RED RED RED RED RED RED RED RED RED RED BATTERY COOLING SYSTEM COOLANT PUMPS RELAY FUSE 2 FUSE 8 FUSE 5 FUSE 8 FUSE 9 FUSE 10 FUSE 1 FUSE 39 AIR CONDITIONING BLOWER MOTOR POWER SUPPLY RELAY (NOT USED) (NOT USED) (ELECTRIC) (NOT USED) (BEHIND RIGHT REAR BODY PANEL) (GLOVE COMPT) FROM COMBUSTION ENGINE FUSE & RELAY MODULE (DIAGRAM 1 OF 4) FROM COMBUSTION ENGINE FUSE & RELAY MODULE (DIAGRAM 1 OF 4) ELECTRIC DRIVE CONTROL UNIT BATTERY COOLING SYSTEM COOLANT PUMP 1 & BATTERY COOLING SYSTEM COOLANT PUMP 2 FROM POWER SUPPLY FUSE & RELAY MODULE (DIAGRAM 1 OF 4) ELECTRIC DRIVE CONTROL UNIT & TRANSMISSION MODE RECOGNITION SENSOR FAN RELAY, BATTERY MANAGEMENT SYSTEM CONTROL UNIT, HIGH-VOLTAGE BATTERY COOLING SYSTEM REGULATING VALVE, HIGH-VOLTAGE BATTERY COOLING & HIGH-VOLTAGE CONTROL UNIT BOX CONTROL VALVE FROM VEHICLE INTERIOR FUSE & RELAY MODULE (DIAGRAM 2 OF 4) BLOWER MOTOR DRIVER SEAT HEATER CONTROL UNIT, FRONT PASSENGER SEAT HEATER CONTROL UNIT, LEFT FRONT SEAT HEATER SWITCH & RIGHT FRONT SEAT HEATER SWITCH HIGH-VOLTAGE BATTERY HEATER RELAY, ELECTRONIC SELECTOR LEVER MODULE CONTROL UNIT, HIGH-VOLTAGE PTC HEATER, ECLECTIC REFRIGERANT COMPRESSOR, HIGH-VOLTAGE CRASH SENSOR CONTROL UNIT, HEATED REAR WINDOW/ OUTSIDE MIRRORS RELAY & ELECTRIC VEHICLE DRIVE MOTOR FAN RELAY ELECTRIC DRIVE CONTROL UNIT FROM BATTERY CLAMP FUSE (DIAGRAM 1 OF 4)