BMW 1 series F20/F21 (2011-2015) computer data lines system Wiring diagrams

1 2 3 4 5 6 STEERING SIG STEERING SIG STEERING SIG ACTIVE STEERING (BEHIND LEFT FRONT WHEEL) BLK WIRE BLK/BRN WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE CAN-BUS CAN-BUS COMPUTER DATA LINES SYSTEM ECO VALVE (UNDER STARTER) ECO VLV SIG SOL VLV ELECTRIC LOCK (ON STEERING MOTOR ASSEMBLY) FUSE 49 SIDE OF DASH) JUNCTION BOX (UNDER RIGHT NCA WIRE RED WIRE RED/BRN WIRE RED/GRN WIRE RELAY ENERGIZED STEERING GEAR (ON STEERING RACK ASSEMBLY) SUPPLY STEERING GND VIO/GRN WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE WHT/YEL WIRE YEL WIRE YEL/BRN WIRE

BLK/BLU WIRE BLK/VIO WIRE BRN WIRE BRN/BLK WIRE COMPUTER DATA LINES SYSTEM FOOTWELL MODULE (UNDER LEFT SIDE OF DASH) FUSE GRN WIRE GRY/VIO WIRE HOT AT ALL TIMES JUNCTION BOX (UNDER RIGHT SIDE OF DASH) LEFT TAILLIGHT ORG/GRN WIRE RED WIRE RED/GRN WIRE RED/VIO WIRE RED/YEL WIRE REVERSE REVERSE LIGHT SWITCH (M/T) RIGHT TAILLIGHT TRANSMISSION CONTROL (A/T) YEL WIRE

BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/WHT WIRE BLU WIRE BLU/RED WIRE BLU/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM ELECTRONICS JUNCTION BOX FRONT INTERIOR LIGHT FUSE 25 FUSE 41 FUSE 62 FUSE 7 FUSE 77 FUSE 81 FUSE 86 FUSE 84 GLOVE COMPARTMENT LIGHT GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/RED WIRE HOT AT ALL TIMES HOT AT ALL TIMES JUNCTION BOX (UNDER RIGHT SIDE OF DASH) HOT IN ON OR START HOT W/ TERMINAL INTERIOR LIGHTS LEFT FRONT MAKE UP MIRROR SWITCH LEFT FRONT MAKE- UP MIRROR LIGHT MAP READING LIGHT ORG/GRN WIRE POWER DISTRIBUTION SYSTEM REAR INTERIOR LIGHT RED WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RELAY ENERGIZED RIGHT FRONT MAKE UP MIRROR SWITCH RIGHT FRONT MAKE- UP MIRROR LIGHT RIGHT LUGGAGE COMPARTMENT LIGHT ROOF FUNCTION CONTROL CENTER TOP LIGHTS TRUNK LID CENTRAL LOCKING DRIVE (ON REAR COMPT LID) VIO WIRE WHT WIRE 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

1 2 3 4 5 6 WAKE UP SIG CAN L 1 2 GROUND TERM 30 BLU/RED WIRE BRN WIRE COMPUTER DATA LINES SYSTEM ELECTRONIC POWER STEERING (EPS) (UNDER VEHICLE, NEAR RIGHT FRONT WHEEL) FUSE 103 GRN WIRE GRN/RED WIRE GROUND TORQ SIG TORQ SIG HOT AT ALL TIMES REAR FUSE HOLDER (RIGHT SIDE OF REAR COMPT) RED WIRE STEERING TORQUE SENSOR (UNDER VEHICLE) WHT WIRE YEL WIRE

29 27 48 31 26 49 45 46 SPLY GND SIG SPLY GND SIG K-BUS SIG K-BUS SIG BLK/GRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLU/RED WIRE BRN/BLK WIRE COMPUTER DATA LINES SYSTEM FOOTWELL MODULE (UNDER LEFT SIDE OF DASH) FRONT RIDE HEIGHT SENSOR (BEHIND LEFT FRONT WHEEL) FUSE 65 GRN WIRE GRN/RED WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/WHT WIRE HOT W/ TERMINAL JUNCTION BOX LONGITUDINAL DYNAMICS MANAGEMENT (LEFT SIDE OF DASH) ORG/GRN WIRE POWER DISTRIBUTION SYSTEM REAR RIDE HEIGHT SENSOR (FRONT OF RIGHT REAR WHEEL) RED WIRE RED/YEL WIRE WHT WIRE YEL WIRE

BLK WIRE BLK/GRN WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/RED WIRE BLU/YEL WIRE BRK LIGHT BRN WIRE BRN/BLK WIRE BRN/GRY WIRE COMPUTER DATA LINES SYSTEM DIGITAL MOTOR ELECTRONICS (DME) CONTROL MODULE DIRECTION INDICATOR LIGHT DIRECTION INDICATOR/ HIGH BEAM HEADLIGHT SWITCH GRN WIRE GRN/YEL WIRE GRY/BLK WIRE GRY/RED WIRE LEFT HEADLIGHT LIGHT SWITCH UNIT ORG/GRN WIRE RED/BLU WIRE RED/VIO WIRE RED/YEL WIRE SIDE STEERING COLUMN SWITCH CLUSTER TRAILER MODULE (RIGHT SIDE OF REAR COMPT) TRAILER SOCKET VIO/WHT WIRE YEL WIRE YEL/BLK WIRE YEL/RED WIRE YEL/WHT WIRE

BLK WIRE BLK/VIO WIRE BLU/BRN WIRE BLU/BRN/YEL WIRE BLU/GRN WIRE BRN WIRE BRN/BLK WIRE COMPUTER DATA LINES SYSTEM COUPE DYNAMIC STABILITY CONTROL (DSC) (LEFT REAR OF ENGINE COMPT) ELECTRONICS JUNCTION BOX FOOTWELL MODULE (UNDER LEFT SIDE OF DASH) FUSE GRN WIRE GRN/RED WIRE GRN/YEL WIRE HOT AT ALL TIMES HOT AT ALL TIMES JUNCTION BOX (UNDER RIGHT SIDE OF DASH) FUSE LEFT FOG LIGHT LEFT HEADLIGHT LEFT TAILLIGHT LIGHT SWITCH ORG/GRN WIRE PARKING BRAKE WARNING SWITCH (UNDER CENTER CONSOLE) PARKING BRK RAIN/HEADLIGHT SENSOR (CENTER OF WINDSHIELD) RED WIRE RED/BRN WIRE RED/GRN WIRE RED/VIO WIRE RED/YEL WIRE RIGHT FOG LIGHT RIGHT HEADLIGHT RIGHT TAILLIGHT REAR FOG ROOF FUNCTION CONTROL CENTER STEERING COLUMN SWITCH CLUSTER TURN UNIT) WHT WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/WHT WIRE

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

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