Cadillac XT4 I (2018-2023) Computer data lines circuit

AIR IONIZER (ENGINE COMPARTMENT, IN HVAC HOUSING) BATT POS VOLT BLK WIRE BLK/WHT WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE COMMUNICATION ENABLE DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) DRIVER SEAT BOLSTER MEMORY CONTROL MODULE DRIVER SEAT MASSAGE SWITCH GRN WIRE GRN/BLU WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/GRN WIRE HI SPD GMLAN HI SPD GMLAN SERIAL DATA (+) 8 HI SPD GMLAN SERIAL DATA (+) 9 HI SPD GMLAN SERIAL DATA (-) 11 HI SPD GMLAN SERIAL DATA (-) 12 HI SPD GMLAN SERIAL DATA (-) 13 HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED HVAC CONTROL MODULE INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE INSTRUMENT PANEL FUSE BLOCK LO SPD GMLAN LO SPD GMLAN SERIAL DATA LO SPD GMLAN SERIAL DATA 2 LO SPD GMLAN SERIAL DATA 3 LOCAL INTERCONNECT LOCAL INTERCONNECT NETWORK BUS 19 LOGIC NETWORK BUS 13 NETWORK BUS 19 ORG/ WIRE RED/GRY WIRE RED/VIO WIRE SERIAL DATA SERIAL DATA 2 SERIAL DATA GATEWAY MODULE SIG GND STEERING COLUMN LOCK MODULE STEERING WHEEL AIR BAG COIL STEERING WHEEL HEATING CONTROL MODULE UNDERHOOD FUSE BLOCK VIO/GRY WIRE W/ MASSAGE SEAT WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE

BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/VIO WIRE BLU/YEL WIRE CAN BUS HIGH 3 SERIAL DATA CAN BUS HIGH SERIAL DATA CAN BUS LOW SERIAL DATA DRIVER SEAT MEMORY CONTROL MODULE GRN WIRE GRN/BRN WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/GRN WIRE HANDS-FREE LIFTGATE SENSOR CONTROL MODULE HEADLAMP CONTROL MODULE HI SPD GMLAN SER DATA (-) 8 HI SPD GMLAN SERIAL DATA (+) 4 HI SPD GMLAN SERIAL DATA (+) 8 HI SPD GMLAN SERIAL DATA (+) 9 HI SPD GMLAN SERIAL DATA (-) (1) HI SPD GMLAN SERIAL DATA (-) (2) KEYLESS ENTRY CONTROL MODULE LIFTGATE CONTROL MODULE LO SPD GMLAN LOCAL INTERCONNECT NETWORK BUS 13 NETWORK BUS 16 NETWORK BUS 8 NETWORK SERIAL BUS 18 NETWORK SERIAL DATA 16 NETWORK SERIAL DATA 18 PASSENGER PRESENCE MODULE PASSENGER SEAT BOLSTER MEMORY CONTROL MODULE PASSENGER SEAT MASSAGE SWITCH PASSENGER SEAT MEMORY CONTROL MODULE RUN/CRANK IGNITION 1 VOLTAGE SERIAL DATA SERIAL DATA COMM ENABLE SERIAL DATA COMMUNICATION ENABLE SERIAL DATA GATEWAY MODULE (LOWER LEFT SIDE OF DASH) VIO/GRY WIRE W/ MEMORY WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE

BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/VIO WIRE BLU/YEL WIRE COMM ENABLE DETECTION CAN FRONT OBJECT GRN WIRE GRN/WHT WIRE GRY/GRN WIRE GRY/VIO WIRE HI SPD GMLAN HI SPEED GMLAN HIGH SPEED EXTENSION BUS 1 TERMINATING RESISTOR LEFT FRONT SHORT RANGE RADAR SENSOR MODULE LEFT SIDE OBJECT SENSOR MODULE LO SPD GMLAN LONG RANGE RADAR SENSOR MODULE RIGHT FRONT SHORT RANGE RADAR SENSOR MODULE RIGHT SIDE OBJECT SENSOR MODULE SENSOR CONTROL 2 SERIAL DATA SERIAL DATA (-) (1) SERIAL DATA (-) 4 SIDE OBJ W/ ACTIVE SAFETY W/ LANE ACTIVE SAFETY W/O BRAKE PREFILL, INTELLIGENT BRAKE ASSIST W/O LANE ACTIVE SAFETY WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE WINDSHIELD FRONT VIEW CAMERA

ACCESSORY WAKEUP ACTIVE SAFETY CONTROL MODULE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/VIO WIRE BLU/YEL WIRE BODY CONTROL MODULE (LOWER CENTER OF DASH) BRN/VIO WIRE COMMUNICATION ENABLE FRONT OBJECT GRN WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/GRN WIRE GRY/VIO WIRE HI SPD GMLAN HI SPEED GMLAN LO SPD GMLAN LOCAL INTERCONNECT NETWORK SERIAL BUS 1 NETWORK SERIAL BUS 15 NETWORK SERIAL BUS 2 NETWORK SERIAL BUS 3 NETWORK SERIAL BUS 4 REAR SHORT RANGE RADAR SENSOR MODULE SENSOR CONTROL 1 SENSOR CONTROL 2 SERIAL DATA SERIAL DATA (+) 8 SERIAL DATA (-) (1) SERIAL DATA (-) 4 SERIAL DATA 2 VIO/YEL WIRE W/ INTEGRATED BRAKE ASSIST W/O INTEGRATED BRAKE ASSIST WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE

BLK WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/YEL WIRE BRN WIRE CONTENT THEFT DETERRENT SENSOR MODULE FRONT SEAT HEATING CONTROL MODULE GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/GRN WIRE HEAD-UP DISPLAY (IF EQUIPPED) INSTRUMENT PANEL MULTI- FUNCTION SWITCH INTERCONNECT LEFT REAR WINDOW SWITCH LOCAL LOCAL INTERCONNECT LOGIC NETWORK BUS 12 NETWORK SERIAL BUS 1 NETWORK SERIAL BUS 15 NETWORK SERIAL BUS 2 NETWORK SERIAL BUS 4 POWER SOUNDER CONTENT THEFT DETERRENT ALARM MODULE RAIN SENSOR REAR SEAT HEATING CONTROL MODULE RIGHT REAR WINDOW SWITCH RIGHT STEERING WHEEL CONTROLS SWITCH SEAT HEATING SWITCH STEERING WHEEL AIR BAG COIL SUNROOF MOTOR VIO/YEL WIRE WHT WIRE WHT/BLU WIRE WHT/GRN WIRE

BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/YEL WIRE BRN/BLK WIRE BRN/BLU WIRE BUS 6 (+) COMMUNICATION ENABLE ETHERNET ETHERNET BUS 4 (-) ETHERNET BUS 6 (-) ETHERNET BUS 7 (-) GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/WHT WIRE HI SPEED GMLAN HVAC CONTROLS INFO DISPLAY MODULE INFOTAINMENT CONTROL SWITCH INSTRUMENT CLUSTER (W/ MULTI-COLOR STANDARD GRAPHIC) INTERCONNECT LO SPD GMLAN LOCAL LOGIC LOW SPD GMLAN LOW SPEED GMLAN NETWORK BUS 12 RADIO SERIAL DATA SERIAL DATA (-) 9 SERIAL DATA 2 TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE VIO/YEL WIRE W/ ALL ROUND VISION CAMERA WHT WIRE WHT/BLU WIRE WHT/GRN WIRE

BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/YEL WIRE COMMUNICATION COMMUNICATION ENABLE DRIVER WINDOW SWITCH ENABLE GRN WIRE GRN/WHT WIRE GRN/YEL WIRE HI SPEED GMLAN LEFT HEADLAMP ASSEMBLY LO SPD GMLAN LOCAL INTERCONNECT NCA WIRE NETWORK SERIAL BUS 3 NETWORK SERIAL BUS 8 RIGHT HEADLAMP ASSEMBLY SERIAL DATA SERIAL DATA (-) (1) SERIAL DATA 2 STEERING COLUMN POSITION CONTROL MODULE VIO/YEL WIRE W/ PARK ASSIST W/O CONTINUOUSLY VARIABLE REAL TIME DAMPING W/O PARK ASSIST WHT WIRE WHT/BLU WIRE

ACCESSORY WAKEUP BLOCK ENGINE COOLANT FLOW CONTROL VALVE BLU WIRE BLU/BLK WIRE BLU/YEL WIRE COMMUNICATION DRIVER WINDOW MOTOR ENABLE ENGINE COOLANT FLOW CONTROL VALVE ENGINE COOLANT PUMP EVAPORATIVE EMISSION PURGE PUMP GRN/BLK WIRE GRN/WHT WIRE GRN/YEL WIRE HI SPEED GMLAN LOCAL INTERCONNECT NETWORK SERIAL BUS 24 NETWORK SERIAL BUS 3 NETWORK SERIAL BUS 8 PASSENGER WINDOW MOTOR PASSENGER WINDOW SWITCH POWER SUPPLY TRANSFORMER REAR DIFFERENTIAL CLUTCH CONTROL MODULE SERIAL DATA SERIAL DATA (+) (3) SERIAL DATA (-) (1) SERIAL DATA 2 VIO/YEL WIRE WHT WIRE WHT/BLU WIRE YEL WIRE

ACCESSORY WAKEUP ACCESSORY WAKEUP SERIAL DATA ACTIVE GRILLE AIR SHUTTER ACTUATOR BATTERY SENSOR MODULE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/YEL WIRE BRAKE SYSTEM CONTROL MODULE COOLING FAN MOTOR FUEL PUMP DRIVER CONTROL MODULE GRN/BLK WIRE GRN/VIO WIRE GRN/WHT WIRE HI SPD GMLAN HI SPEED GMLAN HI SPEED GMLAN SERIAL DATA (+) (2) HI SPEED GMLAN SERIAL DATA (-) 1 LOCAL INTERCONNECT LOCAL INTERCONNECT NETWORK SERIAL BUS 21 MULTIFUNCTION INTAKE AIR SENSOR NETWORK SERIAL BUS 21 NETWORK SERIAL BUS 22 NETWORK SERIAL BUS 24 POWER STEERING CONTROL MODULE SERIAL DATA SERIAL DATA (+) (3) SERIAL DATA (-) (1) SERIAL DATA (-) 7 SERIAL DATA COMMUNICATION ENABLE TRANSMISSION CONTROL MODULE (ON TOP FRONT OF TRANSMISSION) TRANSMISSION RANGE SELECTOR CONTROLS UNDERHOOD FUSE BLOCK VIO/YEL WIRE WHT WIRE WHT/BLU WIRE