Cadillac CT6 I (2016-2019) serial data Wiring diagrams

5 VOLT REF ACC IGN VOLT ACTUATOR LO REF AMBIENT LT SENS SIG ANTI-LOCK BRAKES SYSTEM ANTI-LOCK BRAKES, CRUISE CONTROL, EXTERIOR LIGHTS SYSTEMS ANTI-LOCK BRAKES, ELECTRONIC SUSPENSION SYSTEMS ANTI-THEFT SYSTEM ANTI-THEFT SYSTEM CRUISE CONTROL SYSTEM AUTO HOLD SW SIG AUTO STOP START SW SIG BATT POSITIVE VOLT BATTERY FUSE BLOCK BCM 1 FUSE BCM 2 FUSE BCM 3 FUSE BCM 4 FUSE BCM 8 FUSE BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/ORG WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (LOWER LEFT END OF DASH) BRAKE APPLY SENS CTRL BRK APPLY SENS LO REF BRK APPLY SENS SIG BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/WHT WIRE BRN/YEL WIRE CAMERA WASH SIG CHARGE IND CTRL COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM CRUISE CONTROL, ANTI-LOCK BRAKES, EXTERIOR LIGHTS SYSTEMS DIMM SW SIG DIMMER SW LOW REF DOOR LOCKS, ANTI-THEFT SYSTEMS DRV DR LK SW LK SIG DRV DR LK SW UNLK EXCEPT HYBRID HYBRID W/O SUPER CRUISE PACKAGE W/ SUPER CRUISE PACKAGE FUSE 1 N/A FUSE 3 FUSE 7 GAP UP/DOWN SW SIG GLOVE BOX DOOR RELEASE SIG GLOVE BOX DR RELEASE RLY CTRL GRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/GRN WIRE GRY/WHT WIRE HAZARD SW SIG HDLP DIMM SW HI BEAM SIG HDLP SW FLASH TO PASS SIG HDLP SW HDLPS OFF SIG CTRL HDLP SW ON SIG HDLP SW PARK LP SIG HEADLIGHTS SYSTEM HORN SW SIG HORNS SYSTEM HOT AT ALL TIMES IGN MODE SW ACC LED SIG IGN MODE SW ST LED SIG IGN MODE SW VOLT IND CTRL IND DIMMING CTRL INSTRUMENT PANEL FUSE BLOCK INTERIOR LP CONTROL INTR LP DEFEAT SW SIG LED AMBIENT LIGHTING CTRL 2 LED BACKLIGHT DIMM CTRL LF TURN SIG SW SIG MULTI-FUNCTION ENERGY STORAGE CAPACITOR CONTROL MODULE POWER DISTRIBUTION SYSTEM POWER SUPPLY TRANSFORMER PUDDLE LP CTRL REAR BODY FUSE BLOCK RED/BLU WIRE RED/BRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE REMOTE FUNCTION ACTR TRANS SIG RESUME/ACCELERATE SW SIG RF TURN SIG SW SIG RUN/CRANK IGN 1 VOLT SECURITY IND CTRL SERIAL DATA SERIAL DATA (+) 1 ACTUATOR CTRL SERIAL DATA (+) 1 REMOTE FUNCTION ACTR RECEIVE SIG SERIAL DATA (-) (1) SERIAL DATA BUS 15 SERIAL DATA LIN BUS 11 SERIAL LIN BUS 4 SHIFT INTERLOCK SYSTEM STARTING/CHARGING SYSTEM STRG COLUMN LCK STATUS SIG TAP UP/TAP DOWN SW SIG TRACTION CTRL SW SIG 1 TRANSMISSIONS SYSTEM VEH ANTI-THEFT SYS IMMOBILIZER CTRL 12 VOLT REF VEH ANTI-THEFT SYS IMMOBILIZER LO REF VIO/BLK WIRE VIO/GRN WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE WHT/RED WIRE WINDSHIELD WASHER SW SIG WINDSHIELD WIPER SW HI SIG WINDSHIELD WIPER SW LO REF WINDSHIELD WPR SW LO SIG WIPER/WASHER SYSTEM YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE

2.0L TURBO 3.6L, 3.0L TURBO AUXILIARY UNDERHOOD FUSE BLOCK BATTERY BATTERY FUSE BLOCK BATTERY SENSOR FUSE HOLDER BATTERY SENSOR MODULE BLK WIRE BLU WIRE BRN WIRE CHARGE IND CHARGE IND CTRL COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY ENGINE CONTROL MODULE FUSE FUSE 8 GEN FUSE GENERATOR GENERATOR FIELD DUTY CYCLE SIG GRN/VIO WIRE GRY WIRE GRY/GRN WIRE HIGH SPEED GMLAN SERIAL DATA (-) (1) INSTRUMENT CLUSTER LOGIC LOW SPEED GMLAN ORG/ WIRE RED WIRE RED/GRY WIRE SERIAL DATA STARTING CIRCUIT WHT WIRE

AIR IONIZER AUXILIARY HVAC CONTROLS AUXILIARY MODE DOOR ACTUATOR BLU WIRE BLU/VIO WIRE BLU/YEL WIRE CENTER CONSOLE RIGHT AUXILIARY AIR TEMPERATURE DOOR ACTUATOR DATA BUS 10 DATA BUS 19 DATA BUS 5 DATA BUS 9 GRN WIRE GRN/BLU WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/GRN WIRE HUMAN MACHINE INTERFACE CONTROL MODULE BYPASS MODULE HVAC CONTROL MODULE HVAC CONTROLS INFO DISPLAY MODULE LEFT UPPER AUXILIARY AIR TEMPERATURE DOOR ACTUATOR LO SPD NETWORK SER RIGHT UPPER AUXILIARY AIR TEMPERATURE DOOR ACTUATOR SER DATA SER DATA (+) 2 SERIAL DATA STEERING COLUMN LOCK MODULE W/ ELECTRONIC CONTROLS HVAC SYSTEM W/O ELECTRONIC CONTROLS HVAC SYSTEM W/ HUMAN MACHINE INTERFACE CONTROL MODULE BYPASS MODULE W/O HUMAN MACHINE INTERFACE CONTROL MODULE BYPASS MODULE WHT WIRE WHT/BLU WIRE YEL WIRE

AUDIO AMPLIFIER (LEFT REAR OF LUGGAGE COMPT) BLU WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE DATA DATA 2 (+) DATA 9 (+) DATA COMM ENABLE GMLAN GRN WIRE GRN/BLU WIRE GRN/WHT WIRE GRY/GRN WIRE GRY/VIO WIRE HI SPD SER HIGH SPEED EXTENSION BUS 2 TERMINATING RESISTOR LO SPD LO SPD SER MOST CTRL MOST SER SER DATA (+) 2 SERIAL DATA TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE W/ AUDIOPHILE W/O AUDIOPHILE W/ ONSTAR W/O BRAKE PREFILL, INTELLIGENT BRAKE ASSIST W/O ONSTAR W/ ONSTAR WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/VIO WIRE WINDSHIELD FRONT VIEW CAMERA

2.0L 3.0L TURBO 3.6L 3.6L, 3.0L TURBO AUXILIARY UNDERHOOD FUSE BLOCK BLK WIRE BLK/BRN WIRE BLK/VIO WIRE BLK/WHT WIRE BLU WIRE BLU/VIO WIRE BLU/WHT WIRE BRN WIRE CHARGE AIR COOLER COOLANT PUMP COMPUTER DATA LINES SYSTEM COOL FAN FUSE COOL PUMP/ COIL ODD FUSE COOLING FAN CTRL SIG COOLING FAN MOTOR (BEHIND RADIATOR) COOLING FAN SENS SIG COOLING FAN SPD SIG DRIVER INFORMATION CENTER DISPLAY ECT SENS SIG ECT SIG GND ENGINE CONTROL MODULE ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMPERATURE SENSOR EXCEPT HYBRID HYBRID GMLAN GRN WIRE HOT AT ALL TIMES HOT W/ ENGINE CONTROLS IGNITION RELAY ENERGIZED HYBRID/EV POWERTRAIN CONTROL MODULE 2 INSTRUMENT CLUSTER J172 (3.6L TURBO) LOGIC LOW SPD PPL RED/YEL WIRE SER DATA (-) (1) SERIAL DATA SIG GND SUPERCHARGE INTERCOOLER PUMP RELAY CTRL UNDERHOOD FUSE BLOCK VIO/BLU WIRE WHT WIRE

AMBIENT LIGHT/ SUNLOAD SENSOR AUTO AUTO HIGH AUTO HIGH BEAM SWITCH BATTERY FUSE BLOCK BEAM IND BEAM LAMP IND BLK WIRE BLK/WHT WIRE COMPUTER DATA COMPUTER DATA LINES SYSTEM FTP FUSE 1 FUSE 9 GMLAN GRN WIRE HEAD HOT AT ALL TIMES HVAC CONTROL MODULE IGNITION 1 INSTRUMENT CLUSTER LEFT HEADLAMP RELAY LINES SYSTEM LO REF LOGIC LOW SPD MULTI-FUNCTION ENERGY STORAGE CAPACITOR CONTROL MODULE N/A NCA WIRE OFF PARK R SUB FUSE REAR BODY FUSE BLOCK RED WIRE RED/GRY WIRE RIGHT HEADLAMP RIGHT HEADLAMP ASSEMBLY RIGHT HEADLAMP CONTROL MODULE RIGHT HEADLAMP COOLING FAN RUN/CRANK SER DATA SERIAL DATA TURN SIGNAL/ MULTI-FUNCTION SWITCH VIO/GRY WIRE VIO/WHT WIRE VOLTAGE WHT WIRE WHT/GRY WIRE YEL WIRE YEL/BRN WIRE

"CHECK ENGINE" IND CTRL 2.0L TURBO, 2.0L PLUG-IN HYBRID 3.6L 3.0L TURBO EXCEPT HYBRID HYBRID AMBIENT AIR TEMP SENS AMBIENT AIR TEMP SENS SIG AMBIENT AIR TEMPERATURE SENSOR AMBIENT LOW REF BATT POS VOLT BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/VIO WIRE BLK/WHT WIRE BLU WIRE BLU/GRY WIRE BLU/VIO WIRE BLU/WHT WIRE BODY CONTROL MODULE (LOWER LEFT END OF DASH) BRAKE/ BRN/GRN WIRE BRN/WHT WIRE BUS 12 CAMSHAFT POS SENS REPLICATED SIG COMPUTER DATA LINES SYSTEM DOWN ENGINE CONTROL MODULE (RIGHT FRONT OF ENGINE COMPT) ENGINE CONTROLS SYSTEM FUEL PUMP, LEVEL SENSOR ASSEMBLY GMLAN SERIAL DATA GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRY/VIO WIRE HYBRID/EV POWERTRAIN CONTROL MODULE 2 LEFT LIFTGATE AJAR SW SIG 1 LOGIC LOGIC RIGHT UPPER STEERING WHEEL CONTROLS SWITCH NETWORK NETWORK BUS 2 OIL LVL SW SIG OIL PRESS SENS LOW REF OIL PRESS SENS SIG PRESS SENS 5 VOLT REF PRIMARY FUEL LEVEL SENSOR PRIMARY FUEL LVL SENS RAP RELAY COIL CTRL REAR COMPARTMENT LID LATCH RED/VIO WIRE RIGHT SEC FUEL LVL SENS SIG SECONDARY FUEL LEVEL SENSOR FUEL LEVEL SENSOR ASSEMBLY SEL SERIAL DATA SIG GND TRANSMISSION SHIFT LEVER TRANSMISSION SHIFT LEVER POSITION INDICATOR VIO WIRE VIO/GRY WIRE VOL (-) WHT WIRE WHT/RED WIRE YEL/BRN WIRE

AMP FUSE AUDIO AMPLIFIER BATT POS VOLT BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/VIO WIRE BLU/YEL WIRE BRN/BLK WIRE BRN/BLU WIRE COMPUTER DATA LINES SYSTEM CRANKSHAFT POSITION SENS REPLICATED SIG FRONT CENTER SPEAKER (-) CTRL FRT CENTER SPKR (-) LO REF GMLAN SERIAL DATA GRN WIRE GRN/BLK WIRE GRN/BLU WIRE GRN/BRN WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/VIO WIRE HI SPD GMLAN SERIAL DATA (+) 9 HOT AT ALL TIMES LEFT FRONT DOOR SPEAKER LEFT REAR WINDOW SHELF SPEAKER LF SPEAKER (-) 2 LO REF LF SPEAKER (-) CTRL 1 LF SPEAKER (-) CTRL 2 LF SPEAKER SIG (-) 1 LH/RR SPEAKER CTRL (+) LH/RR SPEAKER SIG (-) LO REF LR MIDRANGE SPKR (+) CTRL LR SPEAKER (+) CTRL LR SPEAKER SIG (-) MICROPHONE 1 LO REF MICROPHONE 1 SIG MICROPHONE 2 LO REF MICROPHONE 2 SIG MICROPHONE 3 LO REF MICROPHONE 3 SIG MOST CONTROL REAR BODY FUSE BLOCK RED/YEL WIRE RF SPEAKER (-) CTRL 1 RF SPEAKER (-) CTRL 2 RF SPEAKER SIG (-) 1 RF SPKR (-) 2 LO REF RIGHT FRONT DOOR SPEAKER RIGHT INSTRUMENT PANEL SPEAKER RIGHT REAR WINDOW SHELF SPEAKER RR MIDRANGE SPKR (+) CTRL RR MIDRANGE SPKR (-) LO REF RR SPEAKER (+) CTRL RR SPEAKER SIG (-) SERIAL DATA SERIAL DATA COMMUNICATION SIG GND VIO/BLU WIRE W/ PREMIUM SURROUND AMPLIFIER WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/VIO WIRE YEL WIRE YEL/BLK WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/WHT WIRE

BLK/ORG WIRE BLK/WHT WIRE BRN/ORG WIRE COMPUTER DATA LINES SYSTEM GRN WIRE GRY/ORG WIRE HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED INSTRUMENT PANEL FUSE BLOCK IP BODY IGN FUSE LEFT FRONT IMPACT SENSOR LEFT FRONT SIDE IMPACT SENSOR LEFT REAR SIDE IMPACT SENSOR LEFT ROOF RAIL AIR BAG LO SPD GMLAN ORG/BLU WIRE ORG/BRN WIRE ORG/GRN WIRE ORG/VIO WIRE ORG/YEL WIRE PASSENGER PRESENCE MODULE (UNDER PASSENGER'S SEAT CUSHION) REAR BODY FUSE BLOCK RED/BLU WIRE RED/GRN WIRE RET SW LO REF RET SW SIG RIGHT FRONT IMPACT SENSOR RIGHT FRONT SIDE IMPACT SENSOR RIGHT REAR SIDE IMPACT SENSOR SDM FUSE SEAT BELT LT FRT FUSE SEAT BELT RT FRT FUSE SERIAL DATA SHORTING BAR SIG GND UNDERHOOD FUSE BLOCK VIO/GRY WIRE VIO/ORG WIRE W/ STOP/START SYSTEM W/O STOP/START SYSTEM

BATT POS VOLT BCM 6 FUSE BLK WIRE BLK/ORG WIRE BLU WIRE BLU/BLK WIRE BLU/VIO WIRE BLU/YEL WIRE BODY CONTROL MODULE (LOWER LEFT END OF DASH) BRAKE FLUID LEVEL SWITCH (ON BRAKE FLUID RESERVOIR) BRAKE IND BRK FLUID LEVEL SENS SIG BRN WIRE COMPUTER DATA LINES SYSTEM DISPLAY DOOR AJAR IND DRIVER DOOR LATCH ASSEMBLY DRIVER SEAT BELT SWITCH DRIVER SEAT BELT BUCKLE DRV SEAT BELT SW LOW REF DRV SEAT BELT SW SIG ELECTRONIC BRAKE CONTROL MODULE (LOWER LEFT FRONT OF ENGINE COMPT) GRN WIRE GRN/GRY WIRE GRN/YEL WIRE GROUND GRY WIRE GRY/GRN WIRE GRY/RED WIRE GRY/VIO WIRE HEAD HI SPD GMLAN SER DATA (+) 1 HOT AT ALL TIMES INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (UNDER CENTER FLOOR CONSOLE) INSTRUMENT CLUSTER LEFT REAR DOOR LATCH ASSEMBLY LF DOOR AJAR SW SIG LOGIC LOGIC DRIVER WINDOW MOTOR LOGIC LEFT REAR WINDOW MOTOR LOGIC PASSENGER WINDOW MOTOR LOGIC RIGHT REAR WINDOW MOTOR LR DOOR AJAR SW SIG OFF OFF SIG CTRL ORG/BRN WIRE PARK AUTO PARK BRAKE CONTROL SWITCH PARK BRK APPLY SW SIG PARK BRK APPLY SW VOLT REF PARK BRK RELEASE SW SIG PARK BRK SW SIG PARK BRK SW SPLY VOLT PARK LAMP SIG PARK RELEASE SW VOLT REF PASSENGER DOOR LATCH ASSEMBLY RADIO REAR BODY FUSE BLOCK REAR COMPARTMENT LID LATCH RED/WHT WIRE RF DOOR AJAR SW SIG RIGHT REAR DOOR LATCH ASSEMBLY RR DOOR AJAR SW SIG SEAT BELT IND SER DATA SER DATA (+) 2 SER DATA (-) (1) SER DATA BUS 3 SER DATA BUS 4 SERIAL DATA SERVICE PARK BRAKE IND SW ON SIG SW SIG 1 TIRE PRESSURE IND TURN SIGNAL/MULTI-FUNCTION SWITCH VIO/GRY WIRE W/O SUPER CRUISE PACKAGE W/ SUPER CRUISE PACKAGE WHT WIRE WHT/GRN WIRE YEL WIRE YEL/RED WIRE