BMW 1 series F20/F21 (2011-2015) electronics junction box Wiring diagrams

1 2 1 2 COMPUTER DATA LINES SYSTEM 45 46 COMPUTER DATA LINES SYSTEM BLK WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/VIO WIRE BLK/WHT WIRE BLU/BRN WIRE BLU/BRN/YEL WIRE BLU/GRN WIRE BLU/RED WIRE BRN WIRE BRN/BLK WIRE COUPE CONVERTIBLE ELECTRONICS JUNCTION BOX FOOTWELL MODULE (UNDER LEFT SIDE OF DASH) FUSE GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRN/YEL WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/WHT WIRE HOT AT ALL TIMES JUNCTION BOX (UNDER RIGHT SIDE OF DASH) LEFT FOG LIGHT LEFT HEADLIGHT LEFT TAILLIGHT ORG/GRN WIRE PARKING BRAKE WARNING SWITCH RAIN/HEADLIGHT SENSOR (CENTER OF WINDSHIELD) REAR FOG RED WIRE RED/BRN WIRE RED/GRN WIRE RED/VIO WIRE RED/YEL WIRE RIGHT FOG LIGHT ROOF FUNCTION CONTROL CENTER TURN WHT WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/RED WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/WHT WIRE

ACTIVE STEERING (BEHIND LEFT FRONT WHEEL) BLK/RED/WHT WIRE BLK/VIO WIRE BLK/YEL WIRE BLU WIRE BLU/ WHT WIRE BLU/BRN/YEL WIRE BLU/RED WIRE BLU/VIO WIRE BLU/WHT/YEL WIRE BRAKE FLUID LEVEL SWITCH (LEFT REAR OF ENGINE COMPT) BRAKE LIGHT SWITCH (UNDER LEFT SIDE OF DASH) BRK FLD LVL BRK LIGHT LF BRK PAD BRN WIRE BRN/BLK WIRE BRN/GRN/YEL WIRE BRN/RED WIRE CAR ACCESS SYSTEM (UNDER LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM COND WHL SPD F-CAN-LOW DSC SENS DME CONTROL MODULE (RIGHT REAR OF ENGINE COMPT) DSC SENSOR (UNDER DRIVER'S SEAT) DSC SENSOR 2 DYNAMIC STABILITY CONTROL (DSC) (LEFT REAR OF ENGINE COMPT) ELECTRONICS JUNCTION BOX F-CAN HIGH RF WHL OUT FUSE GRN/RED WIRE HAZARD WARNING SWITCH HOT AT ALL TIMES HOT W/ TERMINAL JUNCTION BOX (UNDER RIGHT SIDE OF DASH) LEFT FRONT WHEEL SPEED SENSOR (FRONT OF LEFT FRONT WHEEL) LEFT REAR WHEEL SPEED SENSOR (BEHIND LEFT REAR WHEEL) LF WHL OUT PT CAN LOW GROUND LF WHL SPD LF WHL SPD GROUND LR WHL SPD LR WHL SPD PARKING BRK DSC SENS RR BRK PAD NCA WIRE PARKING BRAKE WARNING SWITCH (UNDER CENTER CONSOLE) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRY WIRE RED/YEL WIRE RIGHT FRONT WHEEL SPEED SENSOR (FRONT OF RIGHT FRONT WHEEL) RIGHT REAR WHEEL SPEED SENSOR (BEHIND RIGHT REAR WHEEL) RR BRK PAD RR WHL OUT RF BRK PAD RR WHL SPD RR WHL SPD STEERING COLUMN SWITCH CLUSTER TELEPHONE TRANSCEIVER (CENTER OF REAR COMPT) TERMINAL 30 RF WHL SPD RF WHL SPD VIO WIRE VIO/WHT WIRE W/ NAVIGATION (NOT USED) W/O NAVIGATION WAKE UP PT CAN HIGH WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/RED WIRE YEL/VIO WIRE YEL/WHT WIRE

1 2 3 4 5 6 7 8 9 10 11 12 GND 1 2 3 4 5 6 7 8 9 10 11 12 GND CAN BUS SIG CAN BUS SIG 1 2 3 4 5 6 7 8 LIN BUS SIG STEPPER GND STEPPER SPLY SENS SIG 9 10 11 12 SENS GND AUC SENSOR (RIGHT REAR OF ENGINE COMPT) AUXILIARY WATER PUMP (LEFT REAR OF ENGINE COMPT) BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLOWER MOTOR (ON HVAC UNIT) BLOWER OUTPUT STAGE BLOWER SIG SENS GND BLU WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE CENTER CONSOLE SWITCH CENTER COMPUTER DATA LINES SYSTEM CONDENSATION SENSOR (CENTER OF WINDSHIELD) CONVERTIBLE TOP MODULE (BEHIND LEFT REAR SEAT) COOLANT PRESSURE SENSOR (RIGHT FRONT OF ENGINE COMPT) ELECTRONICS JUNCTION BOX EVAPORATOR TEMPERATURE SENSOR (ON HVAC UNIT) FUSE 6 FUSE 77 FUSE 88 GRN WIRE GRN/RED WIRE HEATING/AIR CONDITIONING SYSTEM (CENTER OF DASH, ABOVE RADIO) HOT AT ALL TIMES HOT W/ HOT W/ TERMINAL 15 RELAY ENERGIZED JUNCTION BOX (UNDER RIGHT SIDE OF DASH) MIXING AIR CONTROL NCA WIRE ORG/GRN WIRE RED WIRE RED/GRY WIRE RED/VIO WIRE RED/YEL WIRE REFRIGERANT COMPRESSOR CONTROL VALVE RELAY ENERGIZED ROOF FUNCTION CONTROL CENTER SENS SIG SENS SIG SENS SIG SENS SPLY SOLAR SENSOR (TOP CENTER OF DASH) SW CENTER SIG SW CENTER SIG VENTILATION TEMPERATURE SENSOR (ON HVAC UNIT) WATER VALVE (LEFT SIDE OF AUXILIARY WATER PUMP) WHT WIRE WHT/BRN WIRE WHT/GRY WIRE YEL WIRE YEL/BLK WIRE YEL/BRN WIRE YEL/RED WIRE

1 2 CAN L CAN H 11 9 CAN H CAN L 13 9 16 WAKE UP CAN H CAN L 19 35 26 WAKE UP CAN H CAN L 2 15 CAN L CAN H 2 6 CAN L CAN H 2 7 8 TD SIG CAN L CAN H 2 8 CAN L CAN H 3 2 CAN L CAN H 4 3 5 CAN H CAN L WAKE UP 4 3 CAN L CAN H 45 46 44 43 CAN L CAN H CAN H CAN L 5 6 CAN L CAN H A/T ACTIVE STEERING (BEHIND LEFT FRONT WHEEL) BATTERY SENSOR (RIGHT SIDE OF REAR COMPT) BLK WIRE BLK/BLU WIRE BLU RED/ WIRE BLU WIRE BLU/RED WIRE BRN WIRE CAN L CAR ACCESS SYSTEM (UNDER LEFT SIDE OF DASH) COMFORT ACCESS CONTROL MODULE (RIGHT SIDE OF REAR COMPT) CONTROLLER CONVERTIBLE TOP MODULE (BEHIND LEFT REAR SEAT) DME CONTROL MODULE (RIGHT REAR OF ENGINE COMPT) DRIVERS SEAT MODULE (UNDER DRIVER SEAT) DSC SENSOR (UNDER DRIVER'S SEAT) DSC SENSOR 2 DYNAMIC STABILITY CONTROL (DSC) (LEFT REAR OF ENGINE COMPT) ELECTRONICS JUNCTION BOX FOOTWELL MODULE (UNDER LEFT SIDE OF DASH) FUEL PUMP CONTROL (EKPS) FUSE 74 GEAR SELECTOR SWITCH GRN WIRE GRN/RED WIRE HOT AT ALL TIMES JUNCTION BOX (UNDER RIGHT SIDE OF DASH) LONGITUDINAL DYNAMICS MANAGEMENT (LEFT SIDE OF DASH) NCA WIRE ORG/ WIRE ORG/GRN WIRE PARK DISTANCE CONTROL (PDC) (RIGHT SIDE OF REAR COMPT) PASSENGER SEAT MODULE (UNDER FRONT PASSENGER'S SEAT) RADIO (W/ RADIO) CCC/M-ASK (W/O RADIO) CAR INFORMATION COMPUTER (CIC) (W/ CIC) RED WIRE RED/ BLU WIRE RED/GRN WIRE RED/YEL WIRE ROOF FUNCTION CONTROL CENTER SIREN W/ TILT SENSOR (CONVERTIBLE) (REAR OF LEFT REAR WHEELWELL) TIRE PRESSURE CONTROL (RDC) (RIGHT SIDE OF REAR COMPT) TRAILER MODULE (RIGHT SIDE OF REAR COMPT) TRANSMISSION CONTROL WAKE-UP WHT/BLU WIRE WHT/YEL WIRE YEL WIRE YEL/GRN WIRE

10 6 12 WAKE UP CAN L CAN H ACTIVE CRUISE CONTROL (CENTER OF FRONT BUMPER) BLK WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE CAN L CAN-H- CAN-L- CAN-L CAN-H CAR INFORMATION COMPUTER CIC CENTRAL INFORMATION DISPLAY ELECTRONIC POWER STEERING (EPS) (UNDER VEHICLE, NEAR RIGHT FRONT WHEEL) ELECTRONICS JUNCTION BOX GRN WIRE GRN/RED WIRE HEATING/AIR CONDITIONING SYSTEM (CENTER OF DASH, ABOVE RADIO) INSTRUMENT CLUSTER CONTROL UNIT JUNCTION BOX (UNDER RIGHT SIDE OF DASH) MULTIPLE RESTRAINT SYSTEM CONTROL UNIT (REAR OF CENTER CONSOLE) OBDII SOCKET ORG/GRN WIRE PT CAN H PT CAN L RED WIRE RED/YEL WIRE STEERING COLUMN SWITCH CLUSTER WAKE WAKE-UP WHT/BLU WIRE WHT/YEL WIRE

11 15 26 29 30 8 F-CAN H PT CAN LO F-CAN LO WAKE UP DT CAN H RR WHL OUT 4 1 7 GND GND GND ACCELERATOR PEDAL MODULE (PART OF ACCELERATOR PEDAL) ACTIVE CRUISE CONTROL (IF EQUIPPED) (CENTER OF FRONT BUMPER) ANTI-THEFT SYSTEM BLK WIRE BLK/VIO WIRE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/RED WIRE BRAKE LIGHT SWITCH (UNDER LEFT SIDE OF DASH) BRN WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/GRY WIRE CAR ACCESS SYSTEM (UNDER LEFT SIDE OF DASH) CLUTCH SWITCH MODULE (UNDER LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM DME CONTROL MODULE (RIGHT REAR OF ENGINE COMPT) ELECTRIC THROTTLE VALVE (LEFT SIDE OF ENGINE) ELECTRONICS JUNCTION BOX FUSE 21 FUSE 65 FUSE 37 FUSE 75 GRN WIRE GRN/RED WIRE HOT AT ALL TIMES HOT W/ DME RELAY ENERGIZED JUNCTION BOX (UNDER RIGHT SIDE OF DASH) LONGITUDINAL DYNAMICS MANAGEMENT (LEFT SIDE OF DASH) RED WIRE RED/BLK WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RELAY ENERGIZED STEERING COLUMN SWITCH CLUSTER TERM 87 VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/YEL WIRE YEL WIRE YEL/BLU WIRE YEL/GRN WIRE

AF SIREN, INTERFERENCE TILT ALARM SUPPRESSOR SENSOR FILTER AUXILIARY WATER LEFT HEADLIGHT PUMP BATTERY BATTERY SENSOR BLU/GRY WIRE BRN WIRE DC/DC CONVERTER DRIVER'S DRIVER'S REAR SIDE REAR SIDE SYSTEM ENTRANCE LOCK LIGHT DRIVER'S REAR SIDE POWER WINDOW SWITCH ELECTRIC FAN CUT OUT RELAY ELECTRONIC (CONVERTIBLE) POWER CONVERTIBLE STEERING TOP (EPS) MODULE ELECTRONICS JUNCTION BOX ENGINE BREATHER HEATER 1 FRONT INTERIOR/ READING LAMP LEFT ACTIVE HORN STEERING LEFT FOG LIGHT LEFT FRONT DIRECTION INDICATOR LEFT HEATED WATER WASHER NOZZLE LEFT TAILLIGHT NCA WIRE PASSENGER'S BLOWER SIDE OUTPUT FOOTWELL STAGE LIGHT PASSENGER'S DOOR ENTRANCE LIGHT PASSENGER'S DOOR POWER WINDOW SWITCH PASSENGER'S DOOR SYSTEM LOCK PASSENGER'S LUMBAR SUPPORT SWITCH PASSENGER'S SEAT BACKREST WIDTH ADJUSTMENT VALVE BLOCK PASSENGER'S SEAT VACUUM PUMP PASSENGER'S SIDE OUTER DOOR HANDLE ELECTRONIC MODULE PASSENGER'S SIDE OUTSIDE MIRROR REPEATER LIGHT RIGHT HEATED WATER WASHER NOZZLE ROOF FUNCTION CONTROL CENTER STEERING GEAR SHIELD W/ HEATED MIRRORS W/ XENON W/ XENON HEADLIGHT W/O HEATED MIRRORS 4 2 WATER VALVE

AUC SENSOR AUXILIARY AUXILIARY BRAKE LIGHT BASE PLATE BRAKE LIGHT BRN WIRE BRN/BLK WIRE CD CHANGER COMBOX COUPE DIGITAL TUNER US DIODE (EKPS) PANEL EJECT BOX ELECTRO- CHROMIC INTERIOR REAR-VIEW MIRROR ELECTRONICS JUNCTION BOX FOOTWELL MODULE FUEL PUMP CONTROL GEAR INDICATOR LIGHTING NCA WIRE PARK DISTANCE CONTROL (PDC) PASSENGER'S PASSENGER'S REAR SIDE REAR SIDE POWER SYSTEM WINDOW LOCK SWITCH PASSENGER'S REAR SIDE ENTRANCE LIGHT RIGHT HEAD- LIGHT SATELLITE RECEIVER STEPTRONIC SWITCH TELEPHONE TCU RETROFIT PACKAGES CONNECTOR TELEPHONE TRANSCEIVER TRAILER MODULE TRAILER SOCKET TRUNK LID BUTTON ULF ULF- SBX-H ULF-SBX USB AMPLIFIER HUB VIDEO MODULE W/ XENON HEAD- LIGHT W/ XENON HEADLIGHT WASHER FLUID LEVEL SWITCH

A/C COMPRESSOR CONTROL VALVE BLK/BLU WIRE BRN WIRE DME CONTROL MODULE ELECTRIC COOLANT PUMP ELECTRONICS JUNCTION BOX IGNITION COIL CYLINDER 1 IGNITION COIL CYLINDER 2 IGNITION COIL CYLINDER 3 IGNITION COIL CYLINDER 4 IGNITION COIL CYLINDER 5 IGNITION COIL CYLINDER 6 REFRIGERANT COMPRESSOR CONTROL VALVE REVERSING LIGHT SWITCH TOP OF ENGINE) TRANSMISSION CONTROL

BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DRIVER'S SIDE OUTSIDE MIRROR ELECTRONICS JUNCTION BOX FUSE 78 GRN WIRE HOT AT ALL TIMES JUNCTION BOX (UNDER RIGHT SIDE OF DASH) NCA WIRE PASSENGER'S SIDE OUTSIDE MIRROR RED WIRE YEL WIRE