Cadillac CT4 I (2019-2024) instrument panel wiring harness junction block Wiring diagrams

ABS IND. AUTOSAR CAN BUS (+) 2 SERIAL DATA BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLU/RED WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (RIGHT SIDE OF DASH) BRAKE APPLY SENSOR LOW REF BRAKE APPLY SENSOR SIGNAL BRAKE APPLY SENSOR VOLTAGE REF BRAKE IND BRAKE PEDAL POSITION SENSOR BRAKE POSITION SENSOR SIGNAL BRN/BLU WIRE CENTER CONSOLE MULTI-FUNCTION SWITCH COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY ELECTRIC PARK BRAKE IND ENGINE CONTROL MODULE (UNDERHOOD UNDER FUSE BLOCK) ENGINE CONTROL MODULE LIN BUS 1 ENGINE CONTROL MODULE LIN BUS 2 ENGINE CONTROL SENSORS 5 VOLT REFERENCE 1 ENGINE CONTROL VEHICLE SENSORS LOW REFERENCE 1 ENGINE CONTROLS SYSTEM GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED INSTRUMENT CLUSTER INSTRUMENT PANEL WIRING HARNESS JUNCTION BLOCK LEFT FRONT DISC BRAKE PAD WEAR SENSOR LOGIC NCA WIRE PARK BRAKE IND PARKING BRAKE CONTROL SWITCH RED/VIO WIRE RIGHT REAR DISC BRAKE PAD WEAR SENSOR TRACTION CONTROL SWITCH TRACTION CONTROL SWITCH SIGNAL 1 VIO/BLK WIRE W/O WINDSHIELD HEAD-UP DISPLAY WHT WIRE WHT/GRN WIRE

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/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

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

BLK WIRE BLK/YEL WIRE DRIVER OUTSIDE REAR VIEW MIRROR GLASS DRIVER OUTSIDE REAR- VIEW MIRROR GRN/WHT WIRE HOT W/ IGNITION MAIN RELAY ENERGIZED INSIDE REAR VIEW MIRROR INSTRUMENT PANEL WIRING HARNESS JUNCTION BLOCK LOGIC MIRROR DIMMING NCA WIRE VIO/GRY WIRE YEL/WHT WIRE

BATT 27 BATT 28 BATT 29 BATT 55 BATT 56 BATT 57 BLK WIRE BLK/WHT WIRE BLU/BRN WIRE BLU/YEL WIRE CAN BUS (-) 2 SERIAL DATA COMPUTER DATA LINES SYSTEM ENGINE WIRING HARNESS JUNCTION BLOCK GRN WIRE GROUND 22 GRY/BLU WIRE HOT AT ALL TIMES INSTRUMENT PANEL WIRING HARNESS JUNCTION BLOCK LEFT FRONT HEADLAMP LEFT HEADLAMP CONTROL MODULE LEFT HIGH BEAM HEADLAMP LEFT LOW BEAM HEADLAMP LEFT PARK DAYTIME RUNNING LAMP LH FRT DRL CTRL LH FRT LAMP ASSEMBLY CTRL LH HDLP HI BEAM CTRL LH HDLP LOW BEAM CTRL LIGHTING CONTROL MODULE LOGIC NCA WIRE RED/BLU WIRE RED/BRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RH FRT DRL CTRL RH FRT LAMP ASSEMBLY CTRL RH HDLP HI BEAM CTRL RH HDLP LOW BEAM CTRL RIGHT FRONT HEADLAMP RIGHT HEADLAMP CONTROL MODULE RIGHT HIGH BEAM HEADLAMP RIGHT LOW BEAM HEADLAMP RIGHT PARK DAYTIME RUNNING LAMP WHT WIRE YEL WIRE

AUTOSAR CAN BUS (+) 4 SERIAL DATA BATTERY POSITIVE VOLTAGE BLK WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/VIO WIRE BLU/YEL WIRE BRN/GRY WIRE COMPUTER DATA LINES SYSTEM DOWN DRIVE SEAT ADJUSTER MEMORY MODULE (UNDER DRIVER'S SEAT) DRIVER FRONT SEAT ADJUSTER MEMORY SWITCH DRIVER SEAT MEMORY CTRL MODULE LIN BUS 1 EXIT GRN/BRN WIRE GRN/WHT WIRE GROUND GRY/VIO WIRE HOT AT ALL TIMES INSTRUMENT PANEL WIRING HARNESS JUNCTION BLOCK RED/BRN WIRE RWD SEAT MEMORY SW SET SIG SEAT MEMORY SW SIG 1 SET- STEERING COLUMN TELESCOPE ACTUATOR STEERING COLUMN TELESCOPE MOTOR FORWARD CTRL STEERING COLUMN TELESCOPE MOTOR LOW REFERENCE STEERING COLUMN TELESCOPE MOTOR REARWARD CTRL STEERING COLUMN TELESCOPE MOTOR SIG STEERING COLUMN TILT MOTOR DOWN CTRL STEERING COLUMN TILT MOTOR LOW REF STEERING COLUMN TILT MOTOR SIGNAL STEERING COLUMN TILT MOTOR UP CTRL STEERING COLUMN TILT WHEEL ACTUATOR STEERING COLUMN TILT WHEEL, TELESCOPE CONTROL MODULE STEERING COLUMN TILT WHEEL, TELESCOPE SWITCH STEERING COLUMN TILT, TELESCOPE SW DOWN SIG STEERING COLUMN TILT, TELESCOPE SW FEEDBACK SIG STEERING COLUMN TILT, TELESCOPE SW FORWARD SIG STEERING COLUMN TILT, TELESCOPE SW REARWARD SIG STEERING COLUMN TILT, TELESCOPE SW UP SIG VIO/BLK WIRE VIO/GRY WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE YEL/BRN WIRE

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/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

3-4, 5-6, 11-12, 13-14, 19-20, 21-22) AIR BAG IND AUTOSAR CAN BUS (+) 1 SERIAL DATA BATT+ VOLT BLK/WHT WIRE BLU WIRE BRN/ORG WIRE COMPUTER DATA LINES SYSTEM DISPLAY DRIVER INSTRUMENT PANEL LOWER AIR BAG DRV KNEE AIR BAG HIGH CTRL DRV KNEE AIR BAG LOW CTRL GRN/BLK WIRE GRY/ORG WIRE HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED INSTRUMENT CLUSTER INSTRUMENT PANEL AIR BAG INSTRUMENT PANEL WIRING HARNESS JUNCTION BLOCK LIN BUS 1 LOGIC ORG/BLU WIRE ORG/GRN WIRE ORG/VIO WIRE ORG/WHT WIRE PASS IP AIR BAG STAGE 1 HIGH CTRL PASS IP AIR BAG STAGE 1 LOW CTRL PASS IP AIR BAG STAGE 2 HIGH CTRL PASS IP AIR BAG STAGE 2 LOW CTRL PASS KNEE AIR BAG HIGH CTRL PASS KNEE AIR BAG LOW CTRL PASSENGER INSTRUMENT PANEL LOWER AIR BAG RED/GRN WIRE RESTRAINTS CONTROL MODULE (UNDER CENTER FLOOR CONSOLE) RUN/CRANK IGN 1 VOLT SEAT BELT IND SHORTING BAR SIG GROUND STEERING WHEEL AIR BAG COIL STR WHL AIR BAG STAGE 1 HIGH CTRL STR WHL AIR BAG STAGE 1 LOW CTRL STR WHL AIR BAG STAGE 2 HIGH CTRL STR WHL AIR BAG STAGE 2 LOW CTRL VIO/GRY WIRE W/ HEAD-UP DISPLAY WINDSHIELD W/O HEAD-UP DISPLAY WINDSHIELD WHT WIRE WHT/ORG WIRE YEL/ORG WIRE