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

BATTERY BATTERY DISTRIBUTION ENGINE COMPT FUSE BLOCK BATTERY DISTRIBUTION FUSE BLOCK BATTERY MONITOR MODULE BLK WIRE BLK/WHT WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BUS (+) 5 SERIAL DATA BUS (-) SERIAL DATA CHARGE IND CHARGE IND CTRL COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY ENGINE CONTROL MODULE GENERATOR GENERATOR FIELD DUTY CYCLE SIG GRN/YEL WIRE GRY WIRE HOT W/ IGNITION MAIN RELAY ENERGIZED IGN 1 VLT 21 IGNITION 1 VOLT 4 INSTRUMENT PANEL CLUSTER CONTROL MODULE INSTRUMENT PANEL WIRING HARNESS JUNCTION BLOCK LIN BUS (-) SER DATA LOGIC RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE VIO/BLK WIRE VIO/GRN WIRE WHT WIRE

AUTOSAR CAN BUS (+) 5 SERIAL DATA BLK WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY ENGINE WIRING HARNESS JUNCTION BLOCK HOT AT ALL TIMES INSTRUMENT PANEL CLUSTER CONTROL MODULE LEFT FRONT SHORT RANGE RADAR SENSOR LEFT REAR SIDE SHORT RANGE RADAR SENSOR LOGIC LONG RANGE FORWARD RANGE RADAR SENSOR RED/YEL WIRE RIGHT FRONT SHORT RANGE RADAR SENSOR RIGHT REAR SIDE SHORT RANGE RADAR SENSOR WHT/GRY WIRE

2.0L 5-VOLT REF 1 ACTR CTRL CLS ACTR CTRL OPN BLK WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLK/YEL WIRE BLOCK ENGINE COOLANT FLOW CONTROL VALVE BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE COMPUTER DATA LINES SYSTEM COOLANT TEMP SIG DATA DIVERTER VALVE POS SIG DRIVER INFORMATION CENTER DISPLAY ENGINE CONTROL MODULE (UNDER FUSE BLOCK UNDERHOOD) ENGINE COOLANT BYPASS VALVE ENGINE COOLANT FLOW CONTROL VALVE ENGINE COOLANT TEMPERATURE SENSOR 1 ENGINE COOLANT TEMPERATURE SENSOR 2 ENGINE COOLANT TEMPERATURE SENSOR 3 ENGINE COOLANT TEMPERATURE SENSOR 4 ENGINE COOLANT TEMPERATURE SENSOR 5 ENGINE COOLANT TEMPERATURE SENSOR 6 GRN/BRN WIRE GROUND 61 GRY/VIO WIRE HOT W/ ENGINE CONTROLS IGNITION RELAY ENERGIZED HOT W/ IGNITION MAIN RELAY ENERGIZED IGN 1 VOLT 4 INSTRUMENT CLUSTER INSTRUMENT PANEL WIRING HARNESS FUSE BLOCK LOGIC MOST SERIAL ON UPPER SUPPORT RAIL) RADIATOR COOLANT TEMPERATURE SENSOR SENS 2 SIG SENS LO REF 1 SENS LO REF 2 TEMP SIG UNDERHOOD FUSE BLOCK VIO WIRE VIO/BLU WIRE VIO/GRN WIRE W/O WINDSHIELD HEAD-UP DISPLAY WHT/RED WIRE YEL/BLK WIRE YEL/BLU WIRE

AUTOSAR CAN BATT POS VOLT BLK WIRE BLK/GRN WIRE BLU/WHT WIRE BLU/YEL WIRE BUS (-) 5 DATA COMPUTER DATA LINES SYSTEM GRN/BLK WIRE GROUND GY USB SER DATA HEAD-UP DISPLAY HEAD-UP DISPLAY SWITCH HEADLAMP HOT AT ALL TIMES HUD HUD SIG HUD SW LOW REF HUD SW SIG INFO INSTRUMENT PANEL CLUSTER CONTROL MODULE INSTRUMENT PANEL WIRING HARNESS JUNCTION BLOCK LIN BUS 1 LOGIC LVDS RED/BLU WIRE YEL WIRE YEL/WHT WIRE

ABS IND. ADAPTIVE CRUISE IND ADAPTIVE FRONT LIGHTING (AFL) IND AIR BAG IND AUTO HIGH BEAM IND AUTO STOP IND AUTOSAR CAN BUS (+) 5 SER DATA AUTOSAR CAN BUS (-) 5 SER DATA BATT POSITIVE VOLT BLK WIRE BLU/WHT WIRE BLU/YEL WIRE BRAKE SYSTEM WARNING IND BRAKE WARNING IND BRN/BLU WIRE CHARGE IND COMPUTER DATA LINES SYSTEM CRUISE IND DAY NIGHT LED CTRL DECENT CTRL IND DOOR AJAR IND DRIVER INFORMATION CENTER DISPLAY ELECTRIC STABILITY CONTROL OFF IND ELECTRIC STABILITY IND ENGINE COOLANT TEMPERATURE GAUGE ENGINE COOLANT TEMPERATURE IND ENGINE OIL PRESSURE IND ESC IND ESC OFF IND ETHERNET BUS 7 (-) FORWARD COLLISION ALERT LED CTRL FRONT FOG LAMP IND FUEL GAUGE GRN/BLK WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/YEL WIRE HEAD-UP DISPLAY CIRCUIT HIGH BEAM ASSIST IND HIGH BEAM IND HIGH BEAM LAMP IND HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED HUD SIG IGN 1 VOLT INSTRUMENT PANEL CLUSTER CONTROL MODULE INSTRUMENT PANEL FUSE BLOCK LEFT TURN IND LIGHTS ON IND LIN BUS 1 LOGIC LOW FUEL IND LVDS MALFUNCTION IND NAVIGATION SYSTEM PARK BRAKE IND PARK LAMP IND POWER STEERING WARNING LIGHT IND RED/BLU WIRE RED/BRN WIRE RIGHT TURN IND SEAT BELT IND SECURITY IND SERVICE IND SERVICE PARK BRAKE IND SPEEDOMETER TACHOMETER TIRE PRESSURE IND TOW/ HAUL IND TRACTION CRTL OFF IND VEHICLE AHEAD IND VIO/BLK WIRE VIO/GRN WIRE W/O WINDSHIELD HEAD-UP DISPLAY

ACCENT LIGHTING CONTROL AJAR SW SIG BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/WHT WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (RIGHT SIDE OF DASH) BRAKE FLUID LEVEL SENSOR BRAKE MASTER CYLINDER) BRAKE SYSTEM CONTROL MODULE BRK FLUID LEVEL SW SIG CAN BUS (-) 2 SER DATA COMPUTER DATA LINES SYSTEM DR AJAR DRIVER FRONT SIDE DOOR WINDOW REGULATOR MOTOR DRIVER FRONT SIDE LATCH DOOR FUEL PUMP POWER CONTROL MODULE FUEL TANK PUMP MODULE GRN/GRY WIRE GRN/YEL WIRE GROUND 14 GRY WIRE HI SPD GMLAN SER DATA (-) 2 LEFT REAR LEFT REAR SIDE DOOR LATCH LEFT REAR SIDE DOOR WINDOW SWITCH LIN BUS 4 LOGIC LOW REF NCA WIRE PASSENGER FRONT SIDE DOOR WINDOW REGULATOR MOTOR PASSENGER FRONT SIDE LATCH DOOR PRIMARY FUEL LEVEL SENSOR REAR CLOSURE HANDLE SWITCH OPEN SIG REAR COMPARTMENT LID LATCH RED/BRN WIRE RIGHT REAR SIDE DOOR LATCH RIGHT REAR SIDE DOOR WINDOW SWITCH RR DR - SECONDARY FUEL LEVEL SENSOR SECONDARY FUSED BATTERY POSITIVE VOLTAGE 22 SEN 2 LOW REF SENSOR SIGNAL SERIAL DATA (-) 7 SW SIG VIO/GRN WIRE VIO/GRY WIRE WHT WIRE YEL/BLU WIRE

ANC MICROPHONE 1 FEEDBACK SIG ANC MICROPHONE 1 SIG ANC MICROPHONE 2 FEEDBACK SIG ANC MICROPHONE 2 SIG ANC MICROPHONE 3 FEEDBACK SIG ANC MICROPHONE 3 SIG AUDIO AMPLIFIER AUDIO AMPLIFIER CONTROL AUTOSAR CAN BUS (-) 5 SER DATA BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BRN/BLU WIRE BRN/VIO WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM ENTERTAINMENT REMOTE ENABLE SIG FRONT CENTER SPEAKER (+) FRONT CENTER SPEAKER (-) CTRL GND 15 GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRN/VIO WIRE GRN/YEL WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE LEFT FRONT ACTIVE NOISE CANCELLATION MICROPHONE LEFT FRONT RADIO WINDSHIELD SIDE GARNISH MOLDING SPEAKER LEFT RADIO FRONT SIDE DOOR SPEAKER LEFT RADIO REAR SIDE DOOR SPEAKER LEFT REAR SPEAKER (-) CTRL LEFT/REAR SUBWOOFER CTRL (-) LF LOW LEVEL AUDIO (-) LOW REF LF LOW LEVEL AUDIO SIG LF SPEAKER (-) CTRL 1 RIGHT SUBWOOFER CTRL (-) LF SPEAKER 1 (+) CTRL LR LOW LEVEL AUDIO (-) LOW REF LR LOW LEVEL AUDIO SIG + LR SUBWOOFER CTRL (-) RADIO FRONT CENTER SPEAKER RADIO REAR SPEAKER REAR ACTIVE NOISE CANCELLATION MICROPHONE RED/YEL WIRE RF LOW LEVEL AUDIO SIG RF SPEAKER (-) CTRL 1 SEC FUSED BATT POS VOLT 37 RF SPEAKER 1 (+) CTRL RF SPEAKER CTRL (-) CTRL RF SPEAKER SIG (+) CTRL RIGHT FRONT ACTIVE NOISE CANCELLATION MICROPHONE RIGHT FRONT RADIO WINDSHIELD SIDE GARNISH MOLDING SPEAKER RIGHT RADIO FRONT SIDE DOOR SPEAKER RIGHT RADIO REAR SIDE DOOR SPEAKER RIGHT REAR SPEAKER (-) CTRL RIGHT SUBWOOFER CTRL (+) RL LOW LEVEL AUDIO (-) LOW REF RR LOW LEVEL AUDIO (-) LOW REF RR LOW LEVEL AUDIO SIG + VIO/BLU WIRE WHT WIRE YEL WIRE YEL/BLK WIRE YEL/WHT WIRE

BLK/WHT WIRE BLU/BLK WIRE BRN/VIO WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DOWN GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRN/GRY WIRE GRY WIRE GRY/BLU WIRE HOT AT ALL TIMES INSTRUMENT PANEL WIRING HARNESS JUNCTION BLOCK LEFT LEFT FRONT ACTIVE NOISE CANCELLATION MICROPHONE LEFT RADIO REAR SIDE DOOR SPEAKER LEFT RADIO REAR SIDE UPPER SPEAKER LEFT RADIO REAR SURROUND SPEAKER LOGIC REAR BODY WIRING HARNESS JUNCTION BLOCK RED/GRN WIRE RED/YEL WIRE RIGHT RIGHT RADIO QUARTER SPEAKER RIGHT RADIO REAR SURROUND SPEAKER SEEK DOWN SEEK UP SEL STEERING WHEEL AIR BAG COIL STEERING WHEEL RADIO CONTROL SWITCH VIO WIRE VIO/BLU WIRE VIO/WHT WIRE VOL (-) WHT WIRE WHT/BLK WIRE WHT/BRN WIRE YEL/BLK WIRE YEL/BRN WIRE YEL/GRN WIRE

AUTOMATIC TRANSMISSION ASSEMBLY AUTOMATIC TRANSMISSION MANUAL SHIFT SHAFT POSITION SWITCH BATTERY BATTERY DISTRIBUTION FUSE BLOCK BATTERY MONITOR MODULE BLK WIRE BLK/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BUS (-) 2 SERIAL DATA COMPUTER DATA LINES SYSTEM ENGINE RESTART RELAY ENGINE WIRING HARNESS JUNCTION BLOCK GRN/YEL WIRE HOT AT ALL TIMES JUMP START BATTERY CABLE POST TERMINAL RED/YEL WIRE STARTER STARTER RELAY SW MODE CTRL X TRANSMISSION CONTROL MODULE WHT WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/VIO WIRE

ACTUATOR RLY CTRL BUS (-) SERIAL DATA BLK WIRE BLK/GRY WIRE BLK/WHT WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/YEL WIRE BODY CONTROL MODULE (RIGHT SIDE OF DASH) BUS (+) 3 SERIAL DATA BUS (-) 2 SERIAL DATA BUS (-) SERIAL DATA CAN BUS (-) 3 SER DATA COMPUTER DATA LINES SYSTEM ENGINE CONTROL MODULE (UNDER FUSE BLOCK UNDERHOOD) GRN/BLK WIRE GRN/YEL WIRE GROUND HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED IGN MODE SW MODE VLT IGN MODE SW SIG 2 IGNITION MODE SWITCH INSTRUMENT PANEL WIRING HARNESS JUNCTION BLOCK MULTI-FUNCTION POWER SUPPLY CONVERTER PASSIVE START SW 2 LOW REF POWER DISTRIBUTION SYSTEM REAR BODY WIRING HARNESS JUNCTION BLOCK RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/YEL WIRE RUN/CRANK IGN 1 VOLT 4 STARTER PINION SENS 5 VOLT REF 1 SERIAL DATA GATEWAY MODULE (LEFT SIDE OF DASH) STARTER ENABLE RLY CTRL TRENS INTERNAL MODE SW MODE CTRL Y VEHICLE SENS LOW REF 1 VIO/GRN WIRE WHT WIRE WHT/RED WIRE YEL/BLK WIRE YEL/VIO WIRE