Cadillac CT6 I facelift (2018-2023) engine controls system Wiring diagrams

ABS IND. AUTO HOLD SW SIG BRAKE APPLY SENS LOW REF AUTO- HOLD BATT POSITIVE VOLT BATTERY FUSE BLOCK BATTERY POSITIVE VOLT BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/YEL WIRE BLU WIRE BLU/VIO WIRE BLU/YEL WIRE BODY CONTROL MODULE (LOWER LEFT END OF DASH) BRAKE APPLY SENS CTRL BRAKE BOOSTER VACUUM SENSOR BRAKE IND BRAKE PEDAL POSITION SENSOR (LEFT OF ACCELERATOR PEDAL) BRAKE POSITION SENS LOW REF BRAKE POSITION SENS SIG BRAKE VACUUM SENS SIG COMPUTER DATA LINES SYSTEM CRUISE/ETC/TCC BRAKE SIG DRIVER INFORMATION CENTER DISPLAY DRIVER MODE SELECT SWITCH ENGINE CONTROL MODULE ENGINE CONTROLS SYSTEM ESC IND ESC OFF IND GRN/BLK WIRE HI SPD GMLAN SERIAL DATA (-) (1) HI SPD GMLAN SERIAL DATA (-) (1) HI SPD GMLAN SERIAL DATA (+) (1) HOT AT ALL TIMES INSTRUMENT CLUSTER LOGIC POWER SUPPLY TRANSFORMER REAR BODY FUSE BLOCK RED/GRY WIRE RED/VIO WIRE SIG GND TCS OFF IND TRACTION CTRL SW SIG 1 BRAKE APPLY SENS SIG TRACTION OFF WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE YEL/RED WIRE YEL/VIO WIRE

3.6L 4.2L TURBO ACCESSORY WAKE UP SERIAL DATA BATTERY POSITIVE VOLTAGE BLK WIRE BLK/BRN WIRE BLU WIRE BLU/BLK WIRE BODY CONTROL MODULE (LOWER LEFT END OF DASH) BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DISPLAY ENGINE CONTROLS SYSTEM FUEL PUMP DRIVER CONTROL MODULE GRN WIRE GRN/BLK WIRE GRN/GRY WIRE GRN/PPL WIRE GRN/WHT WIRE GRN/YEL WIRE GROUND GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/VIO WIRE HI SPD GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES INSTRUMENT CLUSTER LEFT TRANSMISSION MANUAL SHIFT SWITCH LOGIC MOST SERIAL DATA (+) POWER MODULE WAKE-UP SIGNAL PPL/WHT WIRE REAR BODY FUSE BLOCK RED/VIO WIRE RIGHT TRANSMISSION MANUAL SHIFT SWITCH STEERING WHEEL AIR BAG COIL TAP UP/TAP DOWN SWITCH SIG VIO WIRE VIO/BLK WIRE VIO/GRN WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE

A/C COMPRESSOR (LOWER LEFT SIDE OF ENGINE) A/C COMPRESSOR CLUTCH A/C COMPRESSOR SOLENOID VALVE AMBIENT AIR TEMPERATURE SENSOR AUTO AUXILIARY MODE DOOR ACTUATOR BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/GRY WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/YEL WIRE BRN/GRN WIRE BRN/VIO WIRE BUS SIG COMPUTER DATA LINES SYSTEM DATA DATA BUS - DISPLAY ENGINE CONTROLS SYSTEM FAN DOWN FAN UP GRN WIRE GRN/BLU WIRE GRN/YEL WIRE LEFT OUTLET LEFT REAR LEFT UPPER AUXILIARY AIR TEMPERATURE DOOR ACTUATOR LOGIC POWER RED/BLU WIRE RIGHT CENTER CONSOLE AUXILIARY AIR TEMPERATURE DOOR ACTUATOR RIGHT OUTLET RIGHT REAR RIGHT UPPER AUXILIARY AIR TEMPERATURE DOOR ACTUATOR SERIAL SIG SPLY SWITCH TEMPERATURE VOLT

ACC WAKEUP SERIAL DATA ACTIVE SIG ACTUATOR LOCK CTRL BACKUP LAMP CTRL BATT POSITIVE VOL BATT POSITIVE VOLT BLK WIRE BLU WIRE BLU/BRN WIRE BLU/VIO WIRE BLU/WHT WIRE BODY CONTROL MODULE (LOWER LEFT END OF DASH) BRN WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM CORNERING LAMP RLY CTRL COURTESY LP SW SIG CRUISE CONTROL, ANTI-LOCK BRAKES SYSTEMS CRUISE/ETC/TCC BRAKE SIG DOME LP OFF IND CTRL DOME/READING LAMP CTRL DOOR LOCKS, ANTI-THEFT SYSTEMS DR LK ACTR UNLCK CTRL DR LK CTRL ENGINE CONTROLS SYSTEM EXTERIOR LIGHTS SYSTEM WIPER/WASHER SYSTEM EXTERIOR LIGHTS, HEADLIGHTS SYSTEMS FDBACK SIG FEEDBACK SIG FR WINDSHIELD WIP SW HI SIG FUEL DR LK RLY CTRL GRN WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/VIO WIRE GRY/YEL WIRE HDLP HI BEAM RLY CTRL HDLP RLY COIL CTRL HDLP WASHER RLY CTRL HEADLIGHTS SYSTEM HEADLIGHTS, EXTERIOR LIGHTS SYSTEMS HI BEAM AUTO ON/OFF SW SIG HOOD STATUS B SIGNAL HORN RLY CTRL HORNS SYSTEM HOT AT ALL TIMES INADVERTENT PWR CTRL LED AMBIENT LIGHTING CTRL 1 LED BACKLIGHT DIMM CTRL LF DRL CTRL LF TURN SIG LP CTRL LH HDLP LO BEAM CTRL LH HEADLAMP RLY CTRL LH PARK LP CTRL LIFTGATE AJAR SW SIG LIN BUS 1 LIN BUS 2 LIN BUS 3 LO SPD GMLAN SERIAL DATA LOGISTIC MODE RLY OPEN CTRL LR STP LP CTRL LR TURN SIG LP CTRL MALFUNCTION IND CTRL MTR UNLATCH CTRL PASS DR LK SW LK CTRL PASS DR LOCK SW UNLCK CTRL POWER DISTRIBUTION SYSTEM REAR BODY FUSE BLOCK REAR COURTESY LP CTRL RED/GRN WIRE RED/WHT WIRE RF DRL CTRL RF TURN SIG LP CTRL RH HDLP LO BEAM CTRL RH PARK LP CTRL RLY CLOSE CTRL RR CLOSURE HANDLE SW OPEN SIG RR LICENSE LP CTRL RR STOP LP CTRL RR TURN LP FEEDBACK SIG RR TURN SIG LP CTRL RUN/CRANK RLY COIL CTRL SECURITY LOCK RLY CTRL SERIAL DATA (-) (1) SERIAL DATA COMM ENABLE STP LP RLY COIL CTRL TRUNK, TAILGATE, FUEL DOORS SYSTEM UNLATCH SIG VIO/BLK WIRE VIO/BLU WIRE VIO/GRY WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRY WIRE WHT/VIO WIRE WHT/YEL WIRE WINDSHIELD WASHER RLY CTRL WINDSHIELD WIPER MTR PRK SW SIG WINDSHIELD WIPER MTR RLY COIL CTRL WIPER/WASHER SYSTEM YEL WIRE YEL/BLU WIRE YEL/BRN WIRE

"CHECK ENGINE" IND CTRL 3.6L 4.2L TURBO ABS IND. ADAPTIVE FRONT LIGHTING (AFL) LIGHT IWD AFL LIGHT IND AIR BAG IND AUTO STOP IND BATT POS VOLT BLK WIRE BRAKE WARNING IND BRN/WHT WIRE CHARGE IND CHARGING GAUGE COLLISION ALERT LED CTRL COMPUTER DATA LINES SYSTEM CRUISE IND (W/ MULTI COLOR GRAPHIC) DISPLAY (W/ MULTI COLOR GRAPHIC) DOOR AJAR IND DRIVER INFORMATION CENTER DISPLAY ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMP IND ENGINE COOLANT TEMPERATURE GAUGE ENGINE OIL LEVEL GAUGE ENGINE OIL PRESSURE IND ESC IND ESC OFF IND FUEL GAUGE FUEL IND GRN/BLK WIRE GRY WIRE GRY/GRN WIRE GRY/VIO WIRE HEAD-UP DISPLAY CIRCUIT HEAD-UP DISPLAY SIG HIGH BEAM ASSIST IND HIGH BEAM LAMP IND HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK KM/H MPH GAUGE KM/H MPH IND LANE DEPARTURE WARNING IND LANE KEEP ASSIST IND LED DISPLAY DIM CTRL LEFT TURN IND LEFT UNDERHOOD FUSE BLOCK LOGIC LOW WASHER FLUID IND CTRL LVDS MALFUNCTION IND MOST SERIAL DATA (+) NAVIGATION SYSTEM NIGHT VISION NIGHT VISION CIRCUIT OFF IND PARK IND PARK LAMP IND POWER DISTRIBUTION SYSTEM RED/BLU WIRE RIGHT TURN IND RPM IND RUN/CRANK IGN 1 VOLT SEAT BELT IND SECURITY IND SERIAL DATA BUS 12 SERVICE PARK BRAKE IND SPEEDOMETER START/STOP SYSTEM FUNCTION IND (W/ MULTI COLOR GRAPHIC) TIRE PRESSURE IND TRACTION CONTROL OFF IND UNDERHOOD FUSE BLOCK VEHICLE AHEAD IND VIO WIRE VIO/WHT WIRE WHT WIRE WHT/GRN WIRE WHT/VIO WIRE WIPER/WASHER SYSTEM

"CHECK ENGINE" IND CTRL 3.6L 4.2L TURBO AJAR SW SIG AMBIENT AIR TEMP SENS SIG AMBIENT AIR TEMPERATURE SENSOR BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/VIO WIRE BLU/WHT WIRE BRN/BLU WIRE BRN/GRN WIRE COMPUTER DATA LINES SYSTEM DRIVER DOOR LATCH ASSEMBLY DRIVER WINDOW MOTOR LOGIC ENGINE CONTROL MODULE ENGINE CONTROLS SYSTEM ENGINE CTRL SENS 5 VOLT REF (2) ENGINE CTRL SENS LOW REF 1 ENGINE OIL LEVEL SWITCH ENGINE OIL PRESSURE SENSOR ENGINE OIL PRESSURE, TEMPERATURE SENSOR FUEL LVL SENS 2 LOW REF FUEL LVL SENS LOW REF FUEL PUMP DRIVER CONTROL MODULE (REAR OF RIGHT REAR WHEELWELL) GRN/GRY WIRE GRN/YEL WIRE GRY WIRE HI SPD GMLAN SERIAL DATA (-) 7 J156 (3.6L) LEFT REAR DOOR LATCH ASSEMBLY LEFT REAR WINDOW MOTOR LOGIC NETWORK BUS 3 NETWORK BUS 4 OIL LVL SW SIG OIL PRESS SENS LOW REF OIL PRESS SENS SIG PASSENGER DOOR LATCH ASSEMBLY PASSENGER WINDOW MOTOR LOGIC PRESS SENS 5 VOLT REF PRIMARY FUEL LVL SENS PRIMARY FUEL LVL SENS SIG RIGHT REAR DOOR LATCH ASSEMBLY RIGHT REAR WINDOW MOTOR LOGIC SEC FUEL LVL SENS SIG SERIAL DATA (-) (1) SIG GND WHT WIRE WHT/RED WIRE YEL/BRN WIRE