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

A/T AERIAL DIVERSITY (BOTTOM CENTER OF REAR WINDOW) ANTI-LOCK BRAKES SYSTEM BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/BLK WIRE BLU/RED WIRE BLU/YEL WIRE BRAKE LIGHT SWITCH (UNDER LEFT SIDE OF DASH) BRN WIRE BRN/BLK WIRE BRN/GRY WIRE CAR ACCESS SYSTEM (UNDER LEFT SIDE OF DASH) CLUTCH SWITCH MODULE (UNDER LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM COUPE CONVERTIBLE DC/DC CONVERTER DME CONTROL MODULE (RIGHT REAR OF ENGINE COMPT) ELECTRIC STEERING LOCK ELECTROCHROMIC INTERIOR REAR VIEW MIRROR FBD RECEIVER FOOTWELL MODULE (UNDER LEFT SIDE OF DASH) FUSE GRN WIRE GRN/BRN WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BRN WIRE HOOD CONTACT SWITCH (LEFT REAR OF ENGINE COMPT) HOT AT ALL TIMES HOT W/ BISTABLE RELAY ENERGIZED INTERLCK SENS GROUND TERM 15 SIG TERM 15 SIG JUNCTION BOX (UNDER RIGHT SIDE OF DASH) JUNCTION BOX ELECTRONICS M/T MULTIPLE RESTRAINT SYSTEM CONTROL UNIT NCA WIRE ORG/GRN WIRE RED WIRE RED/BLU WIRE RED/YEL WIRE RELAY REMOTE CONTROL RECEIVER SEAT OCCUPANCY RECOGNITION STARTING/CHARGING SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM TCU TELE SIG LID CONTACT REAR LID SIG TERM 30 TERM 50 SIG ELEC STR + ELEC STR - GROUND CAN BUS TERM R SIG TERM R SIG TERM R TERM R SIG TERM 50 TERM 15 SIG TERM 15 SIG TERMINAL TERMINAL 15 RELAY TRANS SIG TRANSMISSION CONTROL MODULE TRANSMISSIONS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM VIO/BLU WIRE VIO/GRN WIRE VIO/RED WIRE VIO/WHT WIRE VIO/YEL WIRE WAKE-UP WHT WIRE YEL WIRE YEL/BLU WIRE YEL/RED WIRE

13 24 42 46 DR CONTACT SIG 29 40 39 38 35 26 33 CENTER SIG AERIAL DIVERSITY (BOTTOM CENTER OF REAR WINDOW) BLK WIRE BLK/BLU WIRE BLU WIRE BLU/RED WIRE BRN WIRE BRN/BLK WIRE BRN/GRY/WHT WIRE BRN/GRY/YEL WIRE BRN/WHT WIRE CAR ACCESS SYSTEM (UNDER LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM COUPE DRIVER'S DOOR SYSTEM LOCK (LEFT FRONT DOOR) ELECTROCHROMIC INTERIOR REAR VIEW MIRROR FBD RECEIVER FOOTWELL MODULE (UNDER LEFT SIDE OF DASH) FUSE GRN WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/RED WIRE GRY/YEL WIRE HAZARD WARNING SWITCH HOOD CONTACT SWITCH (LEFT REAR OF ENGINE COMPT) HOT AT ALL TIMES HOTEL SWITCH JUNCTION BOX (UNDER RIGHT SIDE OF DASH) JUNCTION BOX ELECTRONICS LOCKING LOCK SIG UNLOCKING LCK SIG 45 46 K-BUS SIG K-BUS SIG ORG/GRN WIRE REAR LID SIG LID CONTACT CAN BUS CAN BUS RMTE CNTRL SIG REMOTE CONTROL RECEIVER TRUNK LID BUTTON VIO/GRN WIRE WHT WIRE WHT/BLK WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/RED WIRE

BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE DIRECTION INDICATOR LIGHT FOOTWELL MODULE (UNDER LEFT SIDE OF DASH) FUSE GRN WIRE GRN/RED WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/VIO WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT W/ BI-STABLE RELAY ENERGIZED HOT W/ TERMINAL JUNCTION BOX (UNDER RIGHT SIDE OF DASH) JUNCTION BOX ELECTRONICS LEFT FRONT DIRECTION INDICATOR LIGHT REPEATER LEFT LICENSE PLATE LIGHT ORG/GRN WIRE RED WIRE RED/BLU WIRE RED/GRN WIRE RED/VIO WIRE RED/YEL WIRE RIGHT FRONT DIRECTION INDICATOR LIGHT REPEATER RIGHT HEADLIGHT RIGHT LICENSE PLATE LIGHT SIDE YEL WIRE YEL/BLK WIRE YEL/WHT WIRE

13 24 42 46 DR CONTACT SIG 29 40 39 38 35 26 33 CENTER SIG AERIAL DIVERSITY (BOTTOM CENTER OF REAR WINDOW) BLK WIRE BLK/BLU WIRE BLU WIRE BLU/RED WIRE BRN WIRE BRN/BLK WIRE BRN/GRY/WHT WIRE BRN/GRY/YEL WIRE BRN/WHT WIRE CAR ACCESS SYSTEM (UNDER LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM COUPE DRIVER'S DOOR SYSTEM LOCK (LEFT FRONT DOOR) ELECTROCHROMIC INTERIOR REAR VIEW MIRROR FBD RECEIVER FOOTWELL MODULE (UNDER LEFT SIDE OF DASH) FUSE GRN WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/RED WIRE GRY/YEL WIRE HAZARD WARNING SWITCH HOOD CONTACT SWITCH (LEFT REAR OF ENGINE COMPT) HOT AT ALL TIMES HOTEL SWITCH JUNCTION BOX (UNDER RIGHT SIDE OF DASH) JUNCTION BOX ELECTRONICS LOCKING LOCK SIG UNLOCKING LCK SIG 45 46 K-BUS SIG K-BUS SIG ORG/GRN WIRE REAR LID SIG LID CONTACT CAN BUS CAN BUS RMTE CNTRL SIG REMOTE CONTROL RECEIVER TRUNK LID BUTTON VIO/GRN WIRE WHT WIRE WHT/BLK WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/RED WIRE

BLK/GRN WIRE BLK/VIO WIRE BLK/YEL WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/RED WIRE BLU/VIO WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/ORG WIRE BRN/RED WIRE BRN/VIO WIRE CAR ACCESS SYSTEM (UNDER LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM DRIVER'S SWITCH CLUSTER DRIVER'S WINDOW MOTOR (LEFT FRONT DOOR) ENERGIZED JUNCTION BOX (UNDER RIGHT SIDE OF DASH) FOOTWELL MODULE (UNDER LEFT SIDE OF DASH) FUSE FUSE 66 GRN WIRE GRN/YEL WIRE GROUND GROUND TRANSDUCER 2 TRANSDUCER 2 TRANSDUCER 1 GRY WIRE GRY/BLU WIRE GRY/RED WIRE HOT AT ALL TIMES HOT W/ TERMINAL JUNCTION BOX ELECTRONICS ORG/GRN WIRE PASSENGER'S DOOR POWER WINDOW SWITCH PASSENGER'S WINDOW MOTOR (RIGHT FRONT DOOR) REAR DRIVER'S SIDE POWER WINDOW MOTOR (CONVERTIBLE) (LEFT REAR DOOR) REAR PASSENGER'S SIDE POWER WINDOW MOTOR (CONVERTIBLE) (RIGHT REAR DOOR) RED WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/YEL WIRE SIGNAL SIGNAL TERMINAL 30 SIG LIN BUS K-BUS SIGNAL K-BUS SIGNAL GROUND 23 45 46 47 TRANSDUCER 1 TRANSDUCER GND TRANSDUCER GND VIO WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/YEL WIRE YEL WIRE

BLK WIRE BLU WIRE BRN WIRE COUPE FUSE FUSE 101 GRN WIRE HEATED REAR WINDOW RELAY HEATING/AIR CONDITIONING SYSTEM (CENTER OF DASH, ABOVE RADIO) HOT AT ALL TIMES JUNCTION BOX (UNDER RIGHT SIDE OF DASH) JUNCTION BOX ELECTRONICS LEFT TRUNK LID RESISTOR NCA WIRE REAR FUSE HOLDER (RIGHT SIDE OF REAR COMPT) REAR WINDOW DEFOGGER REAR WINDOW DEFOGGER (GROUND) LOCKOUT CIRCUIT REAR WINDOW DEFOGGER (POSITIVE) LOCKOUT CIRCUIT (LEFT SIDE OF REAR WINDOW PANEL) RED WIRE RIGHT TRUNK LID RESISTOR WHT WIRE YEL WIRE

ACC PDL GND ACC PDL (+) ANTI-LOCK BRAKES SYSTEM ANTI-THEFT SYSTEM ANTI-THEFT SYSTEM STARTING/CHARGING SYSTEM BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/RED WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/BRN WIRE BLU/RED WIRE BLU/WHT WIRE BRAKE VACUUM PRESSURE SENSOR (LEFT REAR OF ENGINE COMPT) BRN WIRE BRN/BLU WIRE BRN/GRY WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM COOLING FANS SYSTEM CRANKSHAFT BREATHER HEATING 1 (LEFT SIDE OF ENGINE) DME CONTROL MODULE (RIGHT REAR OF ENGINE COMPT) FUEL PUMP CONTROL (EKPS) FUSE GRN/RED WIRE GRY WIRE GRY/VIO WIRE HOT AT ALL TIMES JUNCTION BOX (UNDER RIGHT SIDE OF DASH) JUNCTION BOX ELECTRONICS NCA WIRE ORG/ WIRE OXYGEN SENSOR 2 AFTER CATALYTIC CONVERTER OXYGEN SENSOR 2 BEFORE CATALYTIC CONVERTER (RIGHT REAR OF ENGINE) OXYGEN SENSOR AFTER CATALYTIC CONVERTER OXYGEN SENSOR BEFORE CATALYTIC CONVERTER (ON EXHAUST PIPE, BEFORE CATALYTIC) RADIATOR OUTLET TEMPERATURE SENSOR (RIGHT SIDE OF ENGINE) RED WIRE RED/BLK WIRE RED/WHT WIRE SENSOR GND SENSOR GND SENSOR SIG SENSOR SIG TERMINAL WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/VIO WIRE WHT/YEL WIRE YEL WIRE YEL/GRN WIRE YEL/RED WIRE YEL/WHT WIRE