Cadillac CT4-V I (2019-2024) logic Wiring diagrams

8 SPEED AUTOMATIC TRANSMISSION ASSEMBLY AUTOSAR CAN BUS (+) 2 SERIAL DATA BACKUP LAMP BACKUP LAMP CONTROL BACKUP LAMP CONTROL 2 BLK WIRE BLK/GRY WIRE BLK/WHT WIRE BLU/WHT WIRE BLU/YEL WIRE CAN BUS (-) 2 SERIAL DATA CAN BUS (+) 2 SERIAL DATA COMPUTER DATA LINES SYSTEM ENGINE CONTROL MODULE ENGINE CONTROLS SYSTEM GRN/WHT WIRE GRN/YEL WIRE GROUND 22 HOT AT ALL TIMES INSIDE REAR VIEW MIRROR LEFT TAIL LAMP ASSEMBLY LIGHTING CONTROL MODULE (RIGHT SIDE OF DASH) LOGIC NCA WIRE RADIO RED/WHT WIRE RIGHT TAIL LAMP ASSEMBLY SECONDARY FUSED BATTERY POSITIVE VOLTAGE 27 TRANSMISSION CONTROL MODULE (UNDERHOOD FRONT RIGHT OF FUSE BLOCK) TRANSMISSION INTERNAL MODE SW CONTROL X TRANSMISSION INTERNAL MODE SWITCH TRANSMISSION INTERNAL MODE SWITCH Y LOW REF 1 5 VOLT REF 1 UNDERHOOD FUSE BLOCK WHT WIRE WHT/RED WIRE

ACCEL PEDAL POS SIG 2 ACCELERATOR PEDAL POSITION SENSOR ACCL PEDAL POS 5 VOLT REF 2 ACCL PEDAL POS LOW REF 1 ACCEL PEDAL POS SIG 1 ACCL PEDAL POS LOW REF 2 AMBIENT AIR TEMPERATURE SENSOR AUTOSAR CAN BUS (+) 2 SERIAL DATA AUTOSAR CAN BUS (-) 2 SERIAL DATA GND BATT POS VOLT 25 STEERING WHEEL RESISTOR LADDER LOW REF BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/VIO WIRE BLK/WHT WIRE BLU/GRY WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (RIGHT SIDE OF DASH) BRAKE PEDAL POSITION SENSOR BRK APPLY SENS LOW REF BRK APPLY SENS SIG BRK APPLY SENS VOLT REF BRK POS SENS SIG BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CRUISE CTRL SET/COAST/ RES/ACC SW SIG CRUISE/ETC/TCC BRAKE SIGNAL DISTANCE SENSING CRUISE CNTRL GAP UP/DOWN SW SIG ENGINE CNTRL VEHICLE SENS LOW REF 1 ENGINE CNTRL SENS 5 VOLT REF 1 ENGINE CONTROL MODULE (UNDER UNDERHOOD FUSE BLOCK) ENGINE CONTROLS SYSTEM GRN/WHT WIRE GRY/GRN WIRE HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED INSTRUMENT PANEL FUSE BLOCK LIGHTING CONTROL MODULE (RIGHT SIDE OF DASH) LOGIC RED/BLU WIRE RUN/CRANK IGN 1 VOLT 4 THROTTLE BODY (FRONT LEFT SIDE OF ENGINE) THRTL ACTR CTRL CLOSE THRTL ACTR CTRL OPEN THRTL POS SENS 5 VOLT REF 2 THRTL POS SENS LOW REF THRTL POS SENS SENT 1 SIG VIO/GRN WIRE WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE YEL/WHT WIRE

ADAPTIVE CRUISE IND ADAPTIVE CRUISE SWITCH AUTOMATIC TRANSMISSION ASSEMBLY (10 SPEED A/T) AUTOMATIC TRANSMISSION ASSEMBLY (8 SPEED A/T) AUTOSAR AUTOSAR CAN BUS (+) 2 SERIAL DATA BATT POS BLK WIRE BLK/VIO WIRE BLK/WHT WIRE BLU WIRE BLU/WHT WIRE BLU/YEL WIRE BRN/GRN WIRE BRN/WHT WIRE CAN-BUS CANCEL SWITCH COMPUTER DATA LINES SYSTEM CRUISE CONTROL SWITCH CRUISE IND DATA SERIAL DRIVER INFORMATION CENTER DISPLAY GRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/GRN WIRE INPUT SPD SIG INSTRUMENT PANEL CLUSTER CONTROL MODULE LOGIC NCA WIRE RED WIRE RED/BLU WIRE RES+ SEATS SYSTEM SET- STEERING WHEEL AIR BAG COIL TRANS INPUT SPD SENS SIG TRANS INTERMEDIATE SPD SIG TRANS OUT SPD SENS SIG TRANSMISSION CONTROL MODULE TRANSMISSION INPUT SHAFT SPEED SENSOR TRANSMISSION INTERMEDIATE SHAFT SPEED SENSOR TRANSMISSION INTERMEDIATE SPEED SENSOR 1 TRANSMISSION INTERMEDIATE SPEED SENSOR 2 TRANSMISSION OUTPUT SHAFT SPEED SENSOR VIO WIRE VIO/WHT WIRE VOLT 32 W/O WINDSHIELD HEAD-UP DISPLAY WHT WIRE WHT/VIO WIRE YEL WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/GRY WIRE YEL/ORG WIRE

AUTOSAR CAN BUS (+) 2 SERIAL DATA BATTERY POSITIVE VOLT BLK WIRE BLU/BRN WIRE BLU/YEL WIRE BRN/BLU WIRE COMPUTER DATA LINES SYSTEM DR ILL LAMP 2 CTRL DR ILL LAMP GND DRIVER INFORMATION CENTER DISPLAY DRIVER MONITORING CAMERA DRIVER MONITORING SYSTEM MODULE ETHERNET BUS 7 (-) GN LVDS HOT AT ALL TIMES INSTRUMENT CLUSTER CONTROL MODULE INSTRUMENT PANEL WIRING HARNESS JUNCTION BLOCK LOGIC LVDS PERFORMANCE DATA GN REC LOW VOLT LVDS DIFFERENTIAL SIGNALING LVDS SIG RED/BLU WIRE STEERING WHEEL AIR BAG COIL STEERING WHEEL LED DISPLAY VIO WIRE W/O WINDSHIELD HEAD-UP DISPLAY WHT WIRE WHT/VIO WIRE YEL/BLU WIRE

APPROACH LAMP CONTROL BACKUP LAMP BACKUP LAMP CONTROL BACKUP LAMP CONTROL 2 BACKUP LAMPS CIRCUIT BLK WIRE BLU/VIO WIRE BLU/WHT WIRE BRN/BLU WIRE BRN/GRY WIRE BRN/YEL WIRE CENTER HIGH MOUNTED STOP LAMP CENTER HIGH MOUNTED STOP LAMP SUPPLY VOLTAGE COMPUTER DATA LINES SYSTEM DRIVER OUTSIDE REAR- VIEW MIRROR ETHERNET BUS 7 (-) GND 13 GRN/GRY WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE HOT W/ IGNITION MAIN RELAY ENERGIZED INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK LEFT REAR PARK LAMP LEFT REAR PARK LAMP CONTROL RR TURN SIGNAL LAMP CONTROL 2 LEFT STOP/ TURN SIGNAL LAMP LEFT TAIL LAMP ASSEMBLY LEFT TURN IND LEFT TURN SIGNAL LAMP CONTROL 2 LEFT TURN SIGNAL REPEATER LAMP LIGHTING CONTROL MODULE (RIGHT SIDE OF DASH) LOGIC LR TURN SIGNAL LAMP CONTROL 2 NCA WIRE PARK LAMPS IND PASSENGER OUTSIDE REAR VIEW MIRROR REAR LICENSE PLATE LAMP REAR LICENSE PLATE LAMP CONTROL REAR TURN SIGNAL LAMP FEEDBACK SIG RIGHT REAR PARK LAMP RIGHT REAR PARK LAMP CONTROL RIGHT STOP/ TURN SIGNAL LAMP RIGHT TAIL LAMP ASSEMBLY RIGHT TURN IND RIGHT TURN SIGNAL LAMP CONTROL 2 RIGHT TURN SIGNAL REPEATER LAMP RR TURN SIGNAL LAMP FEEDBACK SIGNAL RUN/CRANK IGNITION 1 VOLTAGE 21 RUN/CRANK IGNITION 1 VOLTAGE 5 VIO/BLK WIRE VIO/GRY WIRE W/ HEAD-UP DISPLAY WINDSHIELD W/O HEAD-UP DISPLAY WINDSHIELD WHT/BLK WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/VIO WIRE WINDSHIELD WIPER SWITCH HIGH SIGNAL WIPER/WASHER SYSTEM YEL/BLU WIRE

5-VOLT REFERENCE 1 AUTO BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRAKE APPLY SENS LOW REF BRAKE APPLY SENS SIG BRAKE APPLY SENS VOLT REF BRAKE PEDAL POSITION SENSOR CAN BUS (-) 2 SERIAL DATA CAN BUS (-) SERIAL DATA COMPUTER DATA LINES SYSTEM ENGINE CONTROL MODULE GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GROUND 14 HAZARD SWITCH HAZARD WARNING SWITCH SIG HDLP SWITCH PARK LAMP SIG HEAD INSTRUMENT PANEL MULTI- FUNCTION SWITCH LEFT LEFT CORNERING LAMP LEFT FRONT TURN SIGNAL LAMP LEFT HEADLAMP ASSEMBLY LEFT PARK DAYTIME RUNNING LAMP LEFT TURN SIG SWITCH SIG LEFT TURN SIGNAL LAMP LOGIC LOW REFERENCE 1 NCA WIRE OFF OPEN SIGNAL PARK REAR CLOSURE HANDLE SWITCH RED/BLU WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RIGHT RIGHT TURN SIG SWITCH SIG SEC FUSED BATT POS VOLT 25 SENSOR SIG TURN SIGNAL/ MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK VIO/BLK WIRE VIO/BLU WIRE WHT WIRE WHT/GRN WIRE WHT/YEL WIRE YEL/BLU WIRE YEL/GRY WIRE YEL/WHT WIRE

BLK WIRE BLU/GRN WIRE BLU/WHT WIRE BRN/GRN WIRE BRN/GRY WIRE FRONT TURN SIG LAMP FEEDBACK SIG GRN WIRE GRN/VIO WIRE GRY WIRE HEADLIGHTS SYSTEM LEFT CORNERING LAMP CONTROL LEFT FRONT LAMP ASSEMBLY CONTROL LEFT FRONT DRL CONTROL LEFT FRONT PARK LAMP LEFT FRONT PARK LAMP CONTROL LEFT FRONT PARK LAMP CONTROL LEFT FRONT DRL CONTROL LEFT FRONT SIDE MARKER LAMP LEFT FRONT TURN SIGNAL LAMP CONTROL LEFT HEADLAMP HI BEAM CONTROL LEFT HEADLAMP HIGH BEAM CONTROL LEFT HEADLAMP LOW BEAM CONTROL LIGHTING CONTROL MODULE (RIGHT SIDE OF DASH) LOGIC LOW WASHER FLUID INDICATOR CTRL NCA WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RF TURN SIG LAMP FEEDBACK SIG RIGHT CORNERING LAMP RIGHT FRONT PARK LAMP RIGHT FRONT PARK LAMP CONTROL RIGHT FRONT SIDE MARKER LAMP RIGHT FRONT TURN SIGNAL LAMP RIGHT HEADLAMP ASSEMBLY RIGHT PARK DAYTIME RUNNING LAMP RIGHT TURN SIGNAL LAMP SEC FUSED BATT POSITIVE VOLT 55 SEC FUSED BATT POSITIVE VOLT 56 SECONDARY FUSED BATT POS VOLT 57 VIO WIRE VIO/BLK WIRE WHT WIRE WHT/VIO WIRE WHT/YEL WIRE WINDSHIELD WASHER RELAY CONTROL WINDSHIELD WIPER MOTOR PARK SW SIG WINDSHIELD WIPER MOTOR RLY COIL CTRL WINDSHIELD WIPER SWITCH HIGH SIG WIPER/WASHER SYSTEM YEL WIRE YEL/GRY WIRE YEL/WHT WIRE

AM/FM RADIO ANTENNA AMPLIFIER BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BRN/BLU WIRE BRN/VIO WIRE BRN/WHT WIRE COAX COMPUTER DATA LINES SYSTEM DOWN GRN/BLK WIRE GRN/GRY WIRE GRN/YEL WIRE HOT AT ALL TIMES INSTRUMENT PANEL WIRING HARNESS JUNCTION BLOCK LEFT LOGIC REAR BODY WIRING HARNESS JUNCTION BLOCK RED/GRN WIRE RED/YEL WIRE RIGHT UP SEEK DOWN SEEK UP SEL STEERING WHEEL AIR BAG COIL STEERING WHEEL RADIO CONTROL SWITCH VIO WIRE VIO/BLU WIRE VIO/WHT WIRE VOL (-) YEL WIRE YEL/BLK WIRE

1 PU 2 PU AUDIO (-) CONTROL AUDIO (-) CTRL AUTOSAR CAN BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BLU/YEL WIRE BRN/VIO WIRE BRN/WHT WIRE BUS (-) 5 SER DATA CELL PHONE SIG CELL/GPS CELLULAR TELE CELLULAR TELE MICRO COAX COAXIAL ANTENNA COMBINED SIG COMPUTER DATA LINES SYSTEM ETHERNET BUS 4 (-) GRN/BLK WIRE GRY WIRE GRY/WHT WIRE GRY/YEL WIRE INFOTAINMENT CONTROL SWITCH LOGIC LOW REF LOW REF 7 MICRO SIG + MULTIMEDIA RECEPTACLE NCA WIRE RED/VIO WIRE USB VOICE RECOGNITION W/ ONSTAR W/O ONSTAR WHT/BLK WIRE YEL WIRE

AM/FM RADIO ANTENNA AMPLIFIER BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BRN/BLK WIRE BRN/VIO WIRE BRN/WHT WIRE COAX COMPUTER DATA LINES SYSTEM CRUISE CONTROL SWITCH GRN/BLK WIRE GRN/GRY WIRE GRY WIRE GRY/BLK WIRE GRY/WHT WIRE LEFT RADIO QUARTER SPEAKER LOGIC LVDS MUTE RADIO REAR VIEW CAMERA RIGHT RADIO BODY REAR SIDE CORNER UPPER GARNISH MOLDING RIGHT RADIO REAR SIDE DOOR SPEAKER USB VIO/WHT WIRE VOICE WHT WIRE WHT/BLK WIRE YEL/BRN WIRE