BMW iX i20 (2021-2024) computer data lines system Wiring diagrams

BASIC CENTRAL PLATFORM (BCP) BLK/BLU WIRE BLK/GRY WIRE BLK/YEL WIRE BLU/GRY WIRE BLU/VIO WIRE BRN WIRE CENTER CONSOLE CENTER POWER DISTRIBUTION BOX COMPUTER DATA LINES SYSTEM ELECTRICAL MACHINE ELECTRONICS (EME) FUSE 105 FUSE 54 GEAR SELECTOR SWITCH (GWS) GRN WIRE GRY WIRE HOT AT ALL TIMES PARKING LOCK MODULE REAR POWER DISTRIBUTION BOX RED WIRE RED/GRN WIRE RED/WHT WIRE RELAY ENERGIZED WHT WIRE YEL WIRE YEL/BRN WIRE YEL/RED WIRE

BASIC CENTRAL PLATFORM (BCP) BLK WIRE BLK/BRN WIRE BLOWER MOTOR BLU WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/WHT WIRE BRN WIRE BRN/BLU WIRE BRN/GRN WIRE COMPUTER DATA LINES SYSTEM COOLANT CHANGEOVER VALVE COOLANT LEVEL SENSOR COOLANT PUMP 3 FRONT POWER DISTRIBUTION BOX FUSE 251 FUSE 3 FUSE 39 GRN/BLU WIRE GRN/YEL WIRE GRY WIRE HOT AT ALL TIMES HOT W/ HOT W/ BI-STABLE RELAY ENERGIZED PASSENGER COMPARTMENT REFRIGERANT SHUTOFF VALVE REAR POWER DISTRIBUTION BOX RED WIRE RED/BLK WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RELAY ENERGIZED VIO WIRE VIO/GRN WIRE VIO/YEL WIRE WHT WIRE WHT/BRN WIRE YEL WIRE YEL/BLU WIRE

2.5L 3.6L 2.5L, 2.8L TURBO DIESEL 2.8L TURBO DIESEL 3.6L AUTOMATIC TRANSMISSION ASSEMBLY (2.5L, 2.8L TURBO DIESEL) AUTOMATIC TRANSMISSION ASSEMBLY (3.6L) BACKUP ALARM (RIGHT REAR OF VEHICLE) BACKUP LAMP BACKUP LAMP SWITCH BACKUP LP BACKUP LP BACKUP LP RLY CTRL BACKUP LP CTRL BASIC CENTRAL PLATFORM (BCP) BATT POS VOLT BATTERY FUSE BLOCK BCM 6 FUSE BLK WIRE BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLUNT CUT) BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN WIRE COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY CTRL ENGINE CONTROL MODULE (UNDER COOLANT RESERVOIR) FRONT POWER DISTRIBUTION BOX FUSE 234 FUSE 5 GEAR SELECTOR SWITCH (GWS) GMLAN SER DATA - (1) GRN WIRE GRY WIRE GRY/BRN WIRE GRY/VIO WIRE GRY/WHT WIRE GRY/YEL WIRE HI SPD GMLAN SER DATA (+) 1 HOT AT ALL TIMES IMS MODE SWITCH LOW REF INSIDE REAR VIEW MIRROR INSTRUMENT PANEL FUSE BLOCK J420 (2.5L, 3.6L) LEFT ADDITIONAL LIGHT LEFT BACKUP LAMP LEFT LOWER TAIL/STOP, TURN SIGNAL LAMP LEFT TAIL LAMP ASSEMBLY LEFT UPPER TAIL/STOP, TURN SIGNAL LAMP LT BLU WIRE LT BLU/BRN WIRE LT GRN WIRE LT GRN/WHT WIRE NCA WIRE PARK/NEUTRAL SIG (1) PRNDL A SIGNAL PRNDL B SIGNAL PRNDL C SIGNAL PRNDL P SIGNAL TRANSMISSION POS SENSOR PRNDL S SIGNAL REAR VIEW CAMERA RED WIRE RED/VIO WIRE RED/WHT WIRE REV SW SIG RIGHT ADDITIONAL LIGHT RIGHT BACKUP LAMP RIGHT LOWER TAIL/STOP, TURN SIGNAL LAMP RIGHT TAIL LAMP ASSEMBLY RIGHT UPPER TAIL/STOP, TURN SIGNAL LAMP SIG A SIG B SIG C SIG P TRAILER BACKUP LAMPS RELAY TRAILER CONNECTOR TRAILER PROVISION TRANSMISSION CONTROL MODULE TRANSMISSION INTERNAL MODE SWITCH TRANSMISSION POS SENSOR TRANSMISSIONS SYSTEM TRLR REV LAMP FUSE VIO/WHT WIRE W/ TRAILER CONNECTOR W/O TRAILER CONNECTOR WHT WIRE WHT/BLK WIRE WHT/GRY WIRE YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/GRY WIRE YEL/RED WIRE

12 VOLT REF 2.5L M/T 2.5L A/T 2.5L, 2.8L TURBO DIESEL 2.8L TURBO DIESEL 3.6L 3.6L 2.5L 3.6L 2.8L TURBO DIESEL 5 VOLT REF 5382 (OR 5381) ACCEL PEDAL POS 5 VOLT REF 1 ACCEL PEDAL POS 5 VOLT REF 2 ACCEL PEDAL POS LOW REF 1 ACCEL PEDAL POS LOW REF 2 ACCEL PEDAL POS SIG 1 ACCEL PEDAL POS SIG 2 ADAP CRUISE CTRL UP/DWN SW SIG BATT POS VOLT BCM 7 FUSE BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/LT BLU WIRE BLK/LT GRN WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRAKE APPLY SENS CTRL BRAKE APPLY SENS SIG BRAKE PEDAL POSITION SENSOR (ABOVE BRAKE PEDAL ASSEMBLY) BRAKE POS SENS LOW REF BRAKE POS SENS SIG BRN/LT GRN WIRE BRN/RED WIRE BRN/WHT WIRE CLUTCH APPLY SENS LOW REF CLUTCH APPLY SENS SIG CLUTCH APPLY SENS VOLT REF CLUTCH PEDAL POSITION SENSOR COMPUTER DATA LINES SYSTEM CRUISE CTRL SET/COAST/ RES/ACC SW SIG CRUISE/ETC/TCC BRAKE SIG CRUISE/ETC/TCC/BRAKE SIG ENGINE CONTROL MODULE (UNDER COOLANT RESERVOIR) FUEL MDL RUN/CRNK FUSE GRY/LT GRN WIRE GRY/RED WIRE HI SPD GMLAN SRL DATA (-) (1) HI SPD SRL DATA (-) HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED INSTRUMENT PANEL FUSE BLOCK LOGIC LOW REF LT BLU WIRE LT BLU/RED WIRE LT BLU/WHT WIRE LT GRN/WHT WIRE M/T RED/WHT WIRE RUN/CRANK IGNITION 1 VOLT SIG GND THROTTLE BODY (INTAKE MANIFOLD OPENING) THRTL ACTR CTRL CLOSE THRTL ACTR CTRL OPEN THRTL POS SEN 5 VOLT REF THRTL POS SEN SIG 1 TRANSMISSION OUTPUT SHAFT SPEED SENSOR UNDERHOOD FUSE BLOCK VEHICLE SPD SENS LOW REF VEHICLE SPD SENS SIG VIO/GRY WIRE VIO/WHT WIRE WHT WIRE WHT/GRN WIRE WHT/LT BLU WIRE WHT/RED WIRE YEL WIRE YEL/WHT WIRE

6 SPEED A/T ACCELERATOR PEDAL POSITION SENSOR AUTOMATIC TRANSMISSION ASSEMBLY (8 SPEED A/T) BLK WIRE BLK/LT BLU WIRE BLK/VIO WIRE BRN/LT GRN WIRE BRN/RED WIRE BRN/YEL WIRE CANCEL SWITCH COMPUTER DATA LINES SYSTEM CRUISE IND CRUISE SWITCH DRIVER INFORMATION CENTER DISPLAY GAP SWITCH GRN WIRE GRN/VIO WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/LT GRN WIRE GRY/ORG WIRE INPUT SPD SIG INSTRUMENT CLUSTER LEFT STEERING WHEEL CONTROLS SWITCH LO SPD GMLAN SERIAL DATA LOGIC LT BLU WIRE LT GRN WIRE LT GRN/WHT WIRE OUTPUT SPD SIG RED WIRE RES+ SET- SOUND SYSTEMS STEERING WHEEL AIR BAG COIL TRANS INTRMEDIATE SPD SIG TRANSMISSION CONTROL MODULE (INTEGRAL TO AUTOMATIC TRANSMISSION) TRANSMISSION INPUT SHAFT SPEED SENSOR TRANSMISSION INTERMEDIATE SHAFT SPEED SENSOR TRANSMISSION OUTPUT SHAFT SPEED SENSOR TRANSMISSIONS SYSTEM WHT WIRE WHT/RED WIRE YEL WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/WHT WIRE

AUTO BATT POS VOLT BCM 2 FUSE BCM 3 FUSE BCM 4 FUSE BCM 6 FUSE BLK WIRE BLK/BRN WIRE BLK/WHT WIRE BLU/VIO WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRK APLY SENS CTRL BRK APLY SENS SIG BRN/GRY WIRE BRN/LT BLU WIRE BRN/WHT WIRE CARGO LP SW SIG COIL CTRL COMPUTER DATA LINES SYSTEM GMLAN SERIAL DATA GRY WIRE GRY/BRN WIRE GRY/YEL WIRE HAZARD SW LH TURN SIG HAZARD SW RH TURN SIG HAZARD SW SIG HDLP SW PARK LP SIG HEAD HEADLAMP SWITCH HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK INSTRUMENT PANEL MULTI- FUNCTION SWITCH J420 (2.5L, 3.6L) LEFT LICENSE PLATE LAMP LICENSE LP CTRL LOW REF LP CTRL LP RELAY CTRL LT BLU WIRE LT BLU/GRY WIRE LT BLU/WHT WIRE LT BLU/YEL WIRE LT GRN/GRY WIRE LT GRN/VIO WIRE LT GRN/YEL WIRE LT PRK LP CTRL LT REAR PRK LP CTRL OFF PARK PARK BRAKE SW SIG PARK BRAKE SWITCH RED/BRN WIRE RED/LT GRN WIRE RED/VIO WIRE RED/YEL WIRE RIGHT LICENSE PLATE LAMP RT PRK LP CTRL RT REAR PRK LP CTRL TURN SIGNAL/ MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK VIO/GRY WIRE VIO/LT BLU WIRE VIO/WHT WIRE WHT WIRE WHT/LT GRN WIRE WHT/YEL WIRE

2.5L M/T 2.8L TURBO DIESEL, 3.6L 2.5L A/T 2.8L TURBO DIESEL 3.6L 2.5L 5 VOLT REF BLK WIRE BLK/BRN WIRE BLK/YEL WIRE BRAKE PEDAL POSITION SENSOR BRK POS SENS SIG BRN/GRY WIRE BRN/LT BLU WIRE BRN/WHT WIRE CHEVROLET COMPUTER DATA LINES SYSTEM ENGINE CONTROL MODULE GMC GROUND DISTRIBUTION SYSTEM GRY/BRN WIRE GRY/YEL WIRE LEFT FRONT PARK LAMP LEFT HEADLAMP ASSEMBLY LEFT LOWER PARK/ DAYTIME RUNNING LAMP LEFT PARK DAYTIME RUNNING LAMP LEFT PARK/TURN SIGNAL LAMP LOGIC LOW REF LT BLU WIRE LT BLU/WHT WIRE LT BLU/YEL WIRE LT GRN/VIO WIRE RED WIRE RIGHT FRONT PARK LAMP RIGHT HEADLAMP ASSEMBLY RIGHT LOWER PARK/ DAYTIME RUNNING LAMP RIGHT PARK DAYTIME RUNNING LAMP RIGHT PARK/TURN SIGNAL LAMP SERIAL DATA (-) (1) VIO/GRY WIRE VIO/WHT WIRE WHT WIRE WHT/GRN WIRE WHT/RED WIRE WHT/YEL WIRE YEL WIRE

BACKUP LAMPS CIRCUIT BLK WIRE BLK/WHT WIRE BLUNT CUT CARGO LAMP PROVISION BRN WIRE BRN/GRY WIRE BRN/LT BLU WIRE BRN/WHT WIRE CARGO LAMP FUSE CARGO LAMP RELAY CENTER HIGH MOUNTED STOP LAMP CENTER HIGH MOUNTED STOP LAMP RELAY CHMSL FUSE COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY DRL IND GRY WIRE GRY/YEL WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER J420 (2.5L, 3.6L) LEFT BACKUP LAMP LEFT CARGO LAMP LEFT LOWER TAIL/STOP, TURN SIGNAL LAMP LEFT TAIL LAMP ASSEMBLY LEFT TURN IND LEFT UPPER TAIL/STOP, TURN SIGNAL LAMP LOGIC LOW SPD GMLAN SER DATA LT GRN WIRE LT GRN/WHT WIRE ORG/ WIRE PARK LAMP IND RED WIRE RIGHT BACKUP LAMP RIGHT CARGO LAMP RIGHT LOWER TAIL/STOP, TURN SIGNAL LAMP RIGHT TAIL LAMP ASSEMBLY RIGHT TURN IND RIGHT UPPER TAIL/STOP, TURN SIGNAL LAMP UNDERHOOD FUSE BLOCK VIO/GRY WIRE VIO/WHT WIRE W/ CARGO AREA ACCESSORY LAMPS W/O CARGO AREA ACCESSORY LAMPS WHT/VIO WIRE WHT/YEL WIRE YEL WIRE

ACTIVE BODYWORKS SYSTEM AUX CTRL BACKUP LAMP RELAY CONTROL BACKUP LAMPS CIRCUIT BATTERY FUSE BLOCK BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/RED WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE BRN WIRE COMPUTER DATA LINES SYSTEM EXTERIOR LAMPS CIRCUIT FRONT POWER DISTRIBUTION BOX FULLY AUTOMATIC TRAILER TOW HITCH DRIVE FUSE 238 FUSE 278 FUSE 47 FUSE 48 FUSE 5 FUSE 70 GMLAN SERIAL DATA GRN/BLK WIRE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT W/ LEFT TRAILER STOP/TURN SIGNAL LAMP RELAY LEFT TRAILER TURN SIG LAMP LT BLU WIRE LT BLU/BRN WIRE LT GRN WIRE NCA WIRE ORG/ WIRE PARK LAMP RELAY CONTROL REAR POWER DISTRIBUTION BOX RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE RELAY ENERGIZED RIGHT TRAILER STOP/TURN SIGNAL LAMP RELAY RIGHT TRAILER TURN SIG LAMP RT TRLR LAMP STOP/TRN FUSE TRAILER BACKUP LAMPS RELAY TRAILER BRAKE APPLY SIG TRAILER BRAKE POWER CONTROL MODULE TRAILER BRAKE PROVISION (BLUNT CUT) TRAILER CONNECTOR TRAILER MODULE (AHM) TRAILER PARK LAMPS RELAY TRAILER PROVISION TRAILER SOCKET (13-PIN) (UNDER CENTER OF REAR BUMPER) TRAILER SOCKET SWITCH TRAILER) TRLR BRK CNTRL MDL FUSE TRLR FUSE TRLR PRK LAMP FUSE TRLR REV LAMP FUSE TRLR STOP/TRN LAMP LT FUSE UNDERHOOD FUSE BLOCK WHT WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/LT BLU WIRE YEL WIRE YEL/BLK WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/GRY WIRE YEL/RED WIRE

BASIC CENTRAL PLATFORM (BCP) BATT POS VOLT BATTERY FUSE BLOCK BATTERY POWER DISTRIBUTION BOX BCM 6 FUSE BLK WIRE BLK/BLU WIRE BLK/GRY WIRE BLU WIRE BLU/BRN WIRE BLU/WHT WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN WIRE BRN/GRY WIRE BRN/LT GRN WIRE COMPUTER DATA LINES SYSTEM DELAY SWITCH DRIVER INFORMATION CENTER DISPLAY FRONT POWER DISTRIBUTION BOX FUSE 258 FUSE 266 FUSE 267 FUSE 3 FUSE 407 FUSE 5 GRN WIRE GRY WIRE GRY/GRN WIRE GRY/VIO WIRE HOT AT ALL TIMES HOT W/ BI-STABLE RELAY ENERGIZED HOT W/ TERMINAL INSTRUMENT CLUSTER INSTRUMENT PANEL INSTRUMENT PANEL FUSE BLOCK INTERFERENCE SUPPRESSION FILTER INTERMEDIATE LEVEL WASHER FLUID LEVEL SENSOR LEFT WIPER BLADE HEATING LOW SPEED GMLAN SER DATA LOWER LEVEL WASHER FLUID LEVEL SENSOR LT BLU WIRE MTR RELAY SPLY VOLT WIPER RLY CTRL NCA WIRE OUTSIDE TEMPERATURE SENSOR RAIN/LIGHT/SOLAR CONDENSATION SENSOR REAR WIPER RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RIGHT SIDE OF RADIATOR) RIGHT WIPER BLADE HEATING SERIAL DATA UNDERHOOD FUSE BLOCK VIO/YEL WIRE WASH PUMP FUSE WASHER FLUID RESERVOIR) WASHER PUMP 1 WASHER PUMP 3 WASHER PUMP A WASHER PUMPS CONTROL ELECTRONICS WASHER SWITCH WHT WIRE WHT/BLK WIRE WHT/BRN WIRE WHT/VIO WIRE WINDSHIELD WASHER PUMP WINDSHIELD WASHER PUMP RELAY WINDSHIELD WASHER RLY CTRL WINDSHIELD WASHER SW SIG WINDSHIELD WIPER MOTOR WINDSHIELD WIPER MOTOR PARK SW SIG WINDSHIELD WIPER RELAY WINDSHIELD WIPER SPEED CONTROL RELAY WINDSHIELD WIPER SW HIGH SIG WINDSHIELD WIPER SW LOW REF WINDSHIELD WIPER SW LOW SIG WINDSHIELD WIPER/WASHER SWITCH WIPER MODULE WIPER SW HIGH SIG WIPER SWITCH WPR FUSE YEL/BRN WIRE YEL/GRY WIRE YEL/LT BLU WIRE