Cadillac XT4 I (2018-2023) red/vio Wiring diagrams

ABS IND. BATTERY POSITIVE VOLTAGE BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/WHT WIRE BLU WIRE BLU/GRN WIRE BLU/VIO WIRE BLU/YEL WIRE BODY CONTROL MODULE (LOWER CENTER OF DASH) BRAKE PEDAL POSITION SENSOR (TOP OF BRAKE PEDAL ASSEMBLY) BRAKE WARNING IND BRK APPLY SENS CTRL BRK APPLY SENS LOW REF BRK APPLY SENS SIG BRK POS SENS SIG COMPUTER DATA LINES SYSTEM CRUISE/ETC/TCC BRK SIG DRIVER INFORMATION CENTER DISPLAY DRIVER MODE SELECT SWITCH ENG CTRL SENS 5 VOLT REF 2 ENG CTRL SENS LOW REF 2 ENGINE CONTROL MODULE ESC IND ESC OFF IND GRN/VIO WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE HI SPD GMLAN SER DATA (+) 1 HI SPD GMLAN SER DATA (-) 9 HI SPD GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES IGN 1 VOLT INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK LEFT PARK BRAKE ACTUATOR LOGIC PARK BRAKE SWITCH RED/BLU WIRE RED/VIO WIRE RED/WHT WIRE RIGHT PARK BRAKE ACTUATOR SIG GND SIGNAL GROUND TRACTION CONTROL OFF IND TRACTION CTRL SW SIG 1 UNDERHOOD FUSE BLOCK (BETWEEN LEFT FRONT STRUT TOWER, BATTERY) VIO WIRE VIO/GRY WIRE WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE

AIR QUALITY SENSOR SIGNAL AMBIENT LIGHT/SUNLOAD SENSOR (TOP CENTER OF DASH) BATT POS VOLT BLK WIRE BLK/BLU WIRE BLK/WHT WIRE BLOWER MOTOR BLOWER MOTOR SPEED CTRL BLOWER SPEED FEEDBACK SIG BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE BRN WIRE COMPUTER DATA LINES SYSTEM DEFOGGER SYSTEM DOOR LOCKS, ANTI-THEFT SYSTEMS ELECTRIC VARIABLE DISPLACEMENT CTRL ELECTRIC VARIABLE DISPLACEMENT SUPPLY ENGINE COOLANT PUMP GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/YEL WIRE GROUND GRY WIRE GRY/BLU WIRE GRY/GRN WIRE HEADLIGHTS SYSTEM HI SPD GMLAN SER DATA (+) 1 HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED HUMIDITY SENSOR SIGNAL HUMIDITY TEMPERATURE SENSOR SIGNAL HUMIDITY/WINDSCREEN TEMP SENSOR LOW REFERENCE HVAC CONTROL MODULE (BEHIND CENTER OF DASH) INSIDE AIR TEMPERATURE SENSOR SIGNAL LOCAL INTERCONNECT NETWORK SERIAL DATA BUS 19 LOCAL INTERCONNECT NETWORK SERIAL DATA BUS 9 LOGIC LOGIC WINDSHIELD TEMPERATURE, INSIDE MOISTURE SENSOR LOW SPEED GMLAN SERIAL DATA REAR DEFOG RELAY CTRL RED WIRE RED/BLU WIRE RED/BRN WIRE RED/GRY WIRE RED/PPL WIRE RED/VIO WIRE RED/WHT WIRE RUN/CRANK IGNITION 1 VOLTAGE SIGNAL GROUND SOLAR SENSOR LOW REFERENCE SPEED CTRL TWILIGHT SENTINEL DELAY SIGNAL UNDERHOOD AUXILIARY FUSE BLOCK UNDERHOOD FUSE BLOCK VIO/GRY WIRE VIO/WHT WIRE WHT WIRE WINDSCREEN TEMP SENSOR SIGNAL YEL WIRE YEL/BLU WIRE YEL/RED WIRE YEL/VIO WIRE

2 WAY ACTIVE SAFETY BLK WIRE BLU WIRE BLU/VIO WIRE BLU/YEL WIRE DOWN DRIVER SEAT ADJUSTER SWITCH DRIVER SEAT FRONT VERTICAL MOTOR DRIVER SEAT HORIZONTAL MOTOR DRIVER SEAT LUMBAR SUPPORT MOTOR DRIVER SEAT REAR VERTICAL MOTOR DRIVER SEAT RECLINE MOTOR GRN/BRN WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/GRN WIRE HOT AT ALL TIMES RED/VIO WIRE RWD UNDERHOOD FUSE BLOCK VIO WIRE W/ OBSTACLE DETECTION ENHANCED SIDE W/O OBSTACLE DETECTION ENHANCED SIDE YEL WIRE YEL/BLU WIRE

BATT POSITIVE VOLT BLK WIRE BLK/BLU WIRE BLU/GRN WIRE BLU/VIO WIRE BRN WIRE BRN/WHT WIRE DOWN DRIVER LEFT REAR SEAT HAPTIC MOVEMENT MOTOR DRIVER RIGHT REAR SEAT HAPTIC MOVEMENT MOTOR DRIVER SEAT ADJUSTER SWITCH (W/O MASSAGE CONTROL SEAT) DRIVER SEAT MEMORY CONTROL MODULE (UNDER DRIVER SEAT) FORWARD/ FRT VERT DOWN SW SIG FRT VERT MTR POSITION SENS SIG FRT VERT UP SW SIG GRN WIRE GRN/BRN WIRE GRN/GRY WIRE GRY/BLK WIRE GRY/GRN WIRE HORIZ FWD SW SIG HORIZ MTR POSITION SENS SIG HORIZ RWD SW SIG HORIZONTAL HOT AT ALL TIMES LR HAPTIC SEAT MTR CTRL LUMBAR LUMBAR FWD SW SIG LUMBAR RWD SW SIG MEM SEAT SW SET SIG MEM SEAT SW SIG (1) MEM SENS HI REF (2) MEM SW LOW REF POWER DISTRIBUTION SYSTEM REAR VERT MTR POSITION SENS SIG REAR VERTICAL DOWN SW SIG REAR VERTICAL UP SW SIG REARWARD RECLINE RECLINE FWD SW SIG RECLINE MTR POSITION SENS SIG RECLINE RWD SW SIG RED/BLU WIRE RED/VIO WIRE RR HAPTIC SEAT MTR CTRL UNDERHOOD FUSE BLOCK VERTICAL W/ OBSTACLE DETECTION ENHANCED SIDE ACTIVE SAFETY W/O OBSTACLE DETECTION ENHANCED SIDE ACTIVE SAFETY WHT WIRE WHT/BLK WIRE WHT/RED WIRE YEL WIRE YEL/BLU WIRE YEL/BRN WIRE

AMBIENT LIGHT SENSOR SIG AMBIENT LIGHT/ SUNLOAD SENSOR AUTO BATTERY POSITIVE VOLTAGE BLK/WHT WIRE BLU WIRE BLU/BRN WIRE BODY CONTROL MODULE (LOWER CENTER OF DASH) BRN WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM FTP GRN WIRE GRY WIRE GRY/BLU WIRE HDLP AUTO HIGH BEAM DIM CTRL HDLP DIMMER SW HIGH BEAM SIG HDLP LOW BEAM RELAY CTRL HDLP SW FLASH TO PASS SIG HDLP SW HDLPS OFF SIG CTRL HDLP SW ON SIG HEAD HIGH BEAM HIGH SPD GMLAN SERIAL DATA (+) 1 HOT AT ALL TIMES HVAC CONTROL MODULE INSTRUMENT PANEL FUSE BLOCK LEFT FRONT DRL CONTROL LEFT HDLP LOW BEAM CTRL LEFT HDLP LOW BEAM CTRL LEFT HDLP LOW BEAM CTRL LO REF LOW SPD GMLAN SERIAL DATA OFF PARK RED/BLU WIRE RED/VIO WIRE RED/WHT WIRE RIGHT FRONT DRL CONTROL RIGHT HDLP HIG BEAM CTRL SIG GND SWITCH TURN SIGNAL/MULTI-FUNCTION SWITCH WHT WIRE YEL WIRE

AUXILIARY UNDERHOOD FUSE BLOCK BATTERY FUSE BLOCK BLK WIRE BLU/BRN WIRE BRN/YEL WIRE GRY/BLU WIRE HEADLAMP HIGH BEAM RELAY HOT AT ALL TIMES LEFT HEADLAMP ASSEMBLY LEFT HEADLAMP COOLING FAN LEFT HEADLAMP MULTI-FUNCTION LED LEFT HEADLAMP/ CORNERING LAMP CONTROL MODULE LEFT HIGH BEAM HEADLAMP LEFT LOW BEAM HEADLAMP LEFT PARK DAYTIME RUNNING LAMP NCA WIRE RED/VIO WIRE RED/YEL WIRE UNDERHOOD FUSE BLOCK WHT WIRE YEL WIRE YEL/GRY WIRE

BLK WIRE BLU WIRE BLU/BRN WIRE BRAKE SYSTEM CONTROL MODULE COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY GRN/YEL WIRE GRY/GRN WIRE HIGH BEAM LAMP IND HIGH SPEED GMLAN SERIAL DATA (-) (1) INSTRUMENT CLUSTER LOCAL INTERCONNECT NETWORK BUS 31 LOGIC LOW SPD GMLAN NCA WIRE PARK BRAKE SWITCH RED/VIO WIRE RIGHT HEADLAMP ASSEMBLY RIGHT HEADLAMP COOLING FAN RIGHT HEADLAMP MULTI-FUNCTION LED RIGHT HEADLAMP/ CORNERING LAMP CONTROL MODULE RIGHT HIGH BEAM HEADLAMP RIGHT LOW BEAM HEADLAMP RIGHT PARK/DAYTIME RUNNING LAMP SERIAL DATA 2 WHT WIRE YEL WIRE YEL/GRY WIRE

BLK WIRE BLU WIRE BLU/VIO WIRE BLU/YEL WIRE BRN/GRN WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM DATA BUS 3 DATA BUS 4 DRIVER DOOR LATCH ASSEMBLY (W/ ELECTRICAL STEERING COLUMN LOCK) DRIVER WINDOW SWITCH ENGINE CONTROL MODULE FUEL FILL DOOR LOCK ACTUATOR GRN WIRE GRN/VIO WIRE GRN/YEL WIRE GRY WIRE HOOD AJAR SWITCH HOOD OPEN HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK LEFT REAR DOOR LATCH ASSEMBLY LF DR AJAR SW SIG LOGIC LOGIC DRIVER WINDOW MOTOR PASSENGER DOOR LATCH ASSEMBLY PASSENGER WINDOW MOTOR PPL RED/GRN WIRE RED/VIO WIRE RED/WHT WIRE RF DR AJAR RIGHT REAR DOOR LATCH ASSEMBLY RIGHT REAR WINDOW SWITCH RR DR AJAR SERIAL DATA (-) (1) STATUS SIG SW SIG UNLOCK SIG VIO WIRE W/ REMOTE CONTROL FUEL FILLER DOOR LOCK WHT WIRE WHT/VIO WIRE WHT/YEL WIRE YEL WIRE

ACC IGN VOLT ACTIVE SIG ACTR CTRL ACTR RECEIVE ACTR TRANSMIT AMBIENT LIGHT/SUNLOAD SENSOR BATT POS VOLT BLK WIRE BLU WIRE BLU/VIO WIRE BLU/WHT WIRE BODY CONTROL MODULE (LOWER CENTER OF DASH) BRN WIRE BRN/GRN WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM DR LK ACTR LK CTRL DR LK ACTR UNLK CTRL DR LK ACTR UNLK CTRL 2 DRIVER DOOR LOCK SWITCH DRV DR LK SW LK SIG DRV DR LK SW UNLK SIG FUEL DR LK RLY CTRL GND STEERING COLUMN LK STATUS SIGNAL GRN WIRE GRN/BLU WIRE GRN/VIO WIRE GRY WIRE GRY/WHT WIRE HOOD STATUS B SIG HOT AT ALL TIMES HVAC CONTROL MODULE IGN MODE SW START LED SIG LO REF LO SPD GMLAN SERIAL DATA LOGIC NETWORK BUS 2 PASS DR LK SW LK CTRL PASS DR LK SW UNLK CTRL PASSENGER DOOR LOCK SWITCH POWER SOUNDER CONTENT THEFT DETERRENT ALARM MODULE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE REMOTE CONTROL DOOR LOCK RECEIVER REMOTE FUNCTION ACTR CTRL REMOTE FUNCTION ACTR RECEIVE SIG REMOTE FUNCTION ACTR TRANSMIT SIG RUN/CRANK IGN 1 VOLT SECURITY IND CTRL SIG SOLAR SENS STEERING COLUMN LOCK MODULE UNDERHOOD FUSE BLOCK VIO WIRE WHT WIRE WHT/VIO WIRE YEL WIRE YEL/GRN WIRE YEL/VIO WIRE

AUDIO LOW REF AUDIO SIG + BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE CELL COAX COMPUTER DATA LINES SYSTEM GPS GRN WIRE GRY/GRN WIRE GRY/YEL WIRE HIGH SPD GMLAN INFOTAINMENT CONTROL SWITCH LEFT FRONT MOBILE TELEPHONE MICROPHONE LEFT STEERING WHEEL CONTROLS SWITCH LOGIC LOW REF LT BLU/RED WIRE MICROPHONE (-) LOW REF MICROPHONE SIG MUTE NCA WIRE PNK WIRE PPL/YEL WIRE RED WIRE RED/BLU WIRE RED/VIO WIRE RIGHT FRONT MOBILE TELEPHONE MICROPHONE SERIAL DATA (-) 9 VIO/YEL WIRE VOICE W/ ONSTAR W/O ONSTAR WHT/BLK WIRE WHT/GRN WIRE