Cadillac CT4-V I (2019-2024) computer data lines system Wiring diagrams

ACTR UNLOCK CTRL 1 AIR CONDITIONING SYSTEM AMBIENT LIGHT/SUNLOAD SENSOR BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/YEL WIRE BODY CONTROL MODULE (RIGHT SIDE OF DASH) BRN/BLK WIRE BRN/GRN WIRE BRN/VIO WIRE BRN/WHT WIRE CAN BUS (-) 2 SERIAL DATA COMPUTER DATA LINES SYSTEM DEFOGGER SYSTEM DRIVER EXTERIOR DOOR HANDLE ASSEMBLY DRIVER EXTERIOR DOOR HANDLE SWITCH FUEL DR ACTR LOCK CTRL GRN/BLK WIRE GRN/GRY WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE HOOD STATUS B SIG HORN RLY CTRL HORNS SYSTEM HOT AT ALL TIMES IMMO ANT LOW SIG INTR KYLS ANT 1 HIGH SIG IMMO ANT SIG [+] INSTRUMENT PANEL WIRING HARNESS JUNCTION BLOCK INTR KYLS ANT 1 LOW SIG INTR KYLS ANT 2 LOW SIG KYLS ANT HIGH SIG KYLS ANT LOW SIG LEFT LOW FREQUENCY BODY SIDE ANTENNA LEFT REAR EXTERIOR DOOR HANDLE ASSEMBLY LEFT REAR EXTERIOR DOOR HANDLE SWITCH LF ACTR LOCK CTRL LF ANT HIGH SIG LF ANT LOW SIG LF DR EXTR SW LOCK SIG LIN BUS 16 LIN BUS 4 LOCK ACTR UNLOCK CTRL 2 LOW FREQUENCY INSTRUMENT PANEL ANTENNA LOW FREQUENCY REAR BUMPER ANTENNA LR DR EXTR SW LOCK SIG LR DR LOCK ACTR LOCK CTRL NCA WIRE OPEN SW SIG PASSENGER EXTERIOR DOOR HANDLE ASSEMBLY PASSENGER EXTERIOR DOOR HANDLE SWITCH REAR BODY WIRING HARNESS JUNCTION BLOCK REAR DEFOG RLY CTRL RED/BLU WIRE RED/VIO WIRE REMOTE FUNCTION ACTUATOR MODULE RF DOOR ANT SIG HIGH INTR KYLS ANT 2 HIGH SIG RF DOOR ANT SIG LOW RF DR EXTR SW LOCK SIG RF DR LOCK ACTR LOCK CTRL RIGHT REAR EXTERIOR DOOR HANDLE ASSEMBLY RIGHT REAR EXTERIOR DOOR HANDLE SWITCH RR DR EXTR SW LOCK SIG RR DR LOCK ACTR LOCK CTRL SCTY IND CTRL SCTY LOCK ACTR SIG LR SCTY LOCK ACTR SIG RR SCTY LOCK MTR LOCK CTRL SENS LOW REF VIO WIRE VIO/GRY WIRE VIO/WHT WIRE WHT WIRE WHT/BLU WIRE WHT/GRY WIRE YEL/GRN WIRE

BLK WIRE BLU WIRE BLU/YEL WIRE BRN/BLK WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM DATA BUS 3 DOOR LOCK DRIVER DOOR LOCK SWITCH DRIVER FRONT SIDE DOOR LATCH DRIVER FRONT SIDE DOOR WINDOW CONTROL SWITCH DRIVER FRONT SIDE DOOR WINDOW REGULATOR MOTOR ENGINE CONTROL MODULE FUEL TANK FILLER DOOR LOCK ACTUATOR GRN/BLK WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE IN LUGGAGE COMPT) IND CTRL LF DR AJAR LIN BUS 3 LOCK CTRL LOGIC LOW FREQUENCY REAR COMPARTMENT POWER ANTENNA PASSENGER FRONT SIDE DOOR LATCH PASSENGER FRONT SIDE DOOR WINDOW REGULATOR MOTOR REAR LOW FREQUENCY CONSOLE ANTENNA RF DR AJAR RIGHT LOW FREQUENCY BODY SIDE ANTENNA SW SIG UNLOCK CTRL VIO WIRE VIO/GRY WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/BLU WIRE WHT/VIO WIRE YEL WIRE YEL/GRN WIRE

BLK WIRE BLU/YEL WIRE BRN/GRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CONTENT THEFT DETERRENT SENSOR CTRL DIMM ENGINE COMPARTMENT COVER SWITCH ENGINE WIRING HARNESS JUNCTION BLOCK GARAGE DOOR OPENER TRANSMITTER GRN/GRY WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES INSTRUMENT PANEL WIRING HARNESS JUNCTION BLOCK LEFT REAR SIDE DOOR LATCH LEFT REAR SIDE DOOR WINDOW SWITCH LIN BUS 4 LIN BUS 8 LOGIC LR DR AJAR NCA WIRE RED/BLU WIRE RED/BRN WIRE SECURITY IND SW SIG VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLU WIRE YEL WIRE

BLK WIRE BLU/WHT WIRE BRN/VIO WIRE COMPUTER DATA LINES SYSTEM DOOR LOCK DRIVER INFORMATION CENTER DISPLAY GRN/BLU WIRE GRN/GRY WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/VIO WIRE IND CTRL INSTRUMENT CLUSTER LIN BUS 2 LIN BUS 3 LIN BUS 4 LOCK CTRL LOGIC OPEN SW SIG PASSENGER DOOR LOCK SWITCH PASSENGER FRONT SIDE DOOR WINDOW CONTROL SWITCH RED/BLU WIRE RED/BRN WIRE RIGHT REAR SIDE DOOR LATCH RIGHT REAR SIDE DOOR WINDOW SWITCH RR DR AJAR SECURITY IND SERIAL DATA SW SIG UNLOCK CTRL VIO WIRE VIO/WHT WIRE W/O WINDSHIELD HEAD-UP DISPLAY WHT/BLU WIRE YEL/BLU WIRE YEL/VIO WIRE

BATTERY BATTERY MONITOR MODULE BLK WIRE BRAKE MASTER CYLINDER) BRAKE SYSTEM CONTROL MODULE BRAKE SYSTEM CONTROL MODULE BRAKE MASTER CYLINDER COMPUTER DATA LINES SYSTEM ENGINE COOLANT PUMP ENGINE COOLING FAN MOTOR GENERATOR GRN/YEL WIRE JUMP START BATTERY POSITIVE CABLE TERMINAL POST LEFT ENGINE MOUNT ACTUATOR LEFT FRONT SHORT RANGE RADAR SENSOR LIGHTING CONTROL MODULE LOGIC LONG RANGE FORWARD RANGE RADAR SENSOR NCA WIRE POWER STEERING CONTROL MODULE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RIGHT ENGINE MOUNT ACTUATOR RIGHT FRONT SHORT RANGE RADAR SENSOR STARTER TO INSTRUMENT PANEL WIRING HARNESS JUNCTION BLOCK (DIAGRAM 4 OF 8) TO INSTRUMENT PANEL WIRING HARNESS JUNCTION BLOCK (DIAGRAM 5 OF 8) TO MULTI-FUNCTION POWER SUPPLY CONVERTER (DIAGRAM 6 OF 8) TO REAR BODY WIRING HARNESS JUNCTION BLOCK (DIAGRAM 7 OF 8) TO REAR BODY WIRING HARNESS JUNCTION BLOCK (DIAGRAM 8 OF 8) TRANSMISSION CONTROL MODULE

BLK WIRE BLOWER MOTOR BLU WIRE BLU/WHT WIRE BLU/YEL WIRE CARD READER RECEPTACLE COMPUTER DATA LINES SYSTEM CONTENT THEFT DETERRENT SENSOR DATA LINK CONNECTOR DRIVER MONITORING SYSTEM MODULE FROM BATTERY DISTRIBUTION FUSE BLOCK (DIAGRAM 1 OF 8) FRONT HEATER, AIR CONDITIONING USER INTERFACE CONTROL GARAGE DOOR OPENER TRANSMITTER HEAD-UP DISPLAY INFOTAINMENT CONTROL SWITCH INSTRUMENT PANEL CLUSTER MODULE MULTIMEDIA RECEPTACLE NCA WIRE PASSENGER COMPARTMENT AIR FILTER MODULE PASSENGER RESTRAINTS OCCUPANT CLASSIFICATION SYSTEM MODULE RADIO RADIO CONTROL RED WIRE RED/BLU WIRE RED/GRN WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RESTRAINTS CONTROL MODULE ROOF CONSOLE VEHICLE PERFORMANCE DATA RECORDER W/ INTR, AIR CLEANER, IONIZING EQUIPMENT W/ MOISTURE SENSITIVE W/O WINDSHIELD HEAD-UP DISPLAY WINDSHIELD OUTSIDE MOISTURE SENSOR WIRELESS ACCESSORY CHARGING MODULE

ACC IND BLK WIRE BLK/GRY WIRE BLK/WHT WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/YEL WIRE BODY CONTROL MODULE BRN/BLK WIRE CAN-BUS COMPUTER DATA LINES SYSTEM DRIVER FRONT SEAT ADJUSTER SWITCH DRIVER FRONT SIDE DOOR WINDOW REGULATOR MOTOR DRIVER SEAT ADJUSTER MEMORY MODULE ENGINE CONTROL MODULE ENGINE START/ STOP ENGINE WIRING HARNESS JUNCTION BLOCK FROM ENGINE WIRING HARNESS JUNCTION BLOCK (DIAGRAM 1 OF 8) FROM REAR BODY WIRING HARNESS JUNCTION BLOCK (DIAGRAM 7 OF 8) GRN/BLK WIRE IGNITION MODE SWITCH ACCESSORY LED SIGNAL IGNITION MODE SWITCH MODE VOLTAGE IGNITION MODE SWITCH START LED SIGNAL ILL LEFT REAR SIDE DOOR WINDOW SWITCH LOW REFERENCE MULTI-FUNCTION POWER SUPPLY CONVERTER ON/OFF VEHICLE SWITCH PASSENGER FRONT SEAT ADJUSTER SWITCH PASSENGER SEAT ADJUSTER MEMORY MODULE PASSIVE START SWITCH SIGNAL 2 REAR BODY WIRING HARNESS JUNCTION BLOCK RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/YEL WIRE SERIAL DATA GATEWAY MODULE START IND STARTER RELAY TO INSTRUMENT PANEL WIRING HARNESS JUNCTION BLOCK (DIAGRAM 4 OF 8) TRAILER IGNITION POWER RELAY VIO/GRN WIRE W/ MEMORY W/ POWER BOLSTER PASSENGER SEAT W/O MEMORY W/O POWER BOLSTER PASSENGER SEAT WHT WIRE YEL WIRE YEL/BLK WIRE

AUTOMATIC TRANSMISSION (10-SPEED A/T) AUTOMATIC TRANSMISSION (8-SPEED A/T) AUTOMATIC TRANSMISSION CONTROL LEVER AUTOMATIC TRANSMISSION MANUAL SHIFT SHAFT POSITION SWITCH BATT POS VOLT BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRAKE PEDAL POSITION SENSOR BRK APPLY SENS LOW REF BRK APPLY SENS SIG BRK APPLY SENS SPLY VOLT BRK POS SENS SIG BRN/BLU WIRE CAN BUS (-) 2 SER DATA CAN BUS (-) 2 SERIAL DATA COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY ENGINE CONTROL MODULE (UNDERHOOD UNDER FUSE BLOCK) ENGINE CONTROLS SYSTEM ENGINE WIRING HARNESS JUNCTION BLOCK ETHERNET BUS 7 (+) ETHERNET BUS 7 (-) GND 13 GRN WIRE GRN/YEL WIRE GRY/BLU WIRE HI SPD GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED INSTRUMENT PANEL CLUSTER CONTROL MODULE INSTRUMENT PANEL WIRING HARNESS JUNCTION BLOCK LOCK SHIFT POS SIG LOGIC NCA WIRE PARK POSITION SWITCH PARK SW SIG PARK SW SIG 2 PRK LOCK SOL ACT CTRL RED/BRN WIRE RED/GRY WIRE RUN/CRANK IGNITION 1 VOLTAGE 21 SENS 5 VOLT REF 1 SENS LOW REF 1 SW MODE CTRL X SWITCH MODE CTRL Y TRANS OUT SHAFT SPD TRANSMISSION CONTROL MODULE TRANSMISSION PARK VALVE POSITION SWITCH TRANSMISSION SHIFT LOCK CONTROL SOLENOID ACTUATOR TRANSMISSIONS SYSTEM VIO/BLK WIRE VIO/WHT WIRE W/O WINDSHIELD HEAD-UP DISPLAY WHT WIRE WHT/GRN WIRE WHT/RED WIRE WHT/VIO WIRE WHT/YEL WIRE YEL WIRE YEL/GRN WIRE YEL/GRY WIRE

BATTERY POSITIVE VOLT BLK WIRE BLU WIRE BLU/VIO WIRE BLU/YEL WIRE BODY CONTROL MODULE BODY CTRL MOD LIN BUS 3 CAN BUS (-) 1 SERIAL DATA CAN BUS (-) 1 SERIAL DATA OFF/ACCESSORY IGN VOLT COLUMN LOCK MODULE (LOWER STEERING COLUMN) COMPUTER DATA LINES SYSTEM DRIVER FRONT SIDE DOOR LATCH DRIVER FRONT SIDE DOOR WINDOW REGULATOR MOTOR FRONT DOOR LOCK IND CTRL GRN/YEL WIRE GRY WIRE HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED INSTRUMENT PANEL WIRING HARNESS JUNCTION BLOCK LOGIC RED/GRY WIRE SERIAL DATA (-) (1) WHT WIRE

AUTOSAR CAN BUS (+) 2 SERIAL DATA BATTERY POSITIVE VOLTAGE BLK WIRE BLK/WHT WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (RIGHT SIDE OF DASH) BRN WIRE BRN/GRY WIRE CAN BUS (+) 2 CAN BUS (-) 2 LIFTGATE AJAR SWITCH SIGNAL 1 COMPUTER DATA LINES SYSTEM DISPLAY DRIVER FRONT SIDE DOOR WINDOW CONTROL SWITCH GRN/BLK WIRE GRN/YEL WIRE GROUND HOT AT ALL TIMES INSTRUMENT CLUSTER INSTRUMENT PANEL WIRING HARNESS JUNCTION BLOCK INTERIOR REAR COMPARTMENT LID RELEASE SWITCH LIFTGATE WINDOW/REAR COMPT LID UNLATCH SIGNAL LIGHTING CONTROL MODULE LIN BUS 2 LIN BUS 3 LOGIC MULTI-FUNCTION CARRIER REAR LICENSE PLATE LAMP REAR CLOSURE HANDLE SWITCH OPEN SIGNAL REAR CLOSURE UNLATCH ACTUATOR UNLATCH CONTROL REAR COMPARTMENT LID LATCH RED WIRE RED/BRN WIRE VIO/BLU WIRE VIO/GRY WIRE W/ WINDSHIELD HEAD-UP DISPLAY W/O WINDSHIELD HEAD-UP DISPLAY WHT WIRE YEL/BLU WIRE