Cadillac XT4 I (2018-2023) blk/yel Wiring diagrams

A/C COMPRESSOR CLUTCH RELAY A/C EVAPORATOR TEMPERATURE SENSOR AIR RECIRCULATION DOOR ACTUATOR AIR TEMP DOOR CONTROL AIR TEMP DOOR CONTROL LOW REFERENCE AIR TEMP DOOR POSITION SIG BLK/WHT WIRE BLK/YEL WIRE BLU/BRN WIRE BLU/YEL WIRE BRN/BLU WIRE BRN/GRN WIRE COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY ENGINE COOLANT TEMPERATURE GAUGE ENGINE COOLANT TEMPERATURE IND ETHER NET BUS 7(+) ETHER NET BUS 7(-) GND EVAP CORE TEMP SENSOR SIG GRN WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/RED WIRE HOT AT ALL TIMES HOT W/ ENGINE CONTROLS IGNITION RELAY ENERGIZED HVAC CONTROL MODULE (BEHIND CENTER OF DASH) IGN INSTRUMENT CLUSTER LEFT AIR TEMPERATURE DOOR ACTUATOR LOGIC MODE 1 VALVE POSITION SENSOR SIG MODE DOOR ACTUATOR MODE DOOR CONTROL PASSENGER AIR TEMP DOOR CONTROL PASSENGER AIR TEMP DOOR POSITION SIG PASSENGER AIR TEMP MOTOR CONTROL RECIRCULATION DOOR CONTROL RECIRCULATION DOOR POSITION SIG RIGHT AIR TEMPERATURE DOOR ACTUATOR UNDERHOOD FUSE BLOCK VIO WIRE VIO/BLU WIRE VIO/GRN WIRE VIO/GRY WIRE WHT WIRE WHT/BLK WIRE WHT/GRN WIRE WHT/GRY WIRE YEL/BLK WIRE YEL/BRN WIRE

A/C COMPRESSOR CLTH RLY CTRL A/C REFRIGERANT PRESS SENS SIG A/C REFRIGERANT PRESSURE SENSOR AMBIENT AIR TEMPERATURE SENSOR 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/RED WIRE BRN/GRY WIRE COMPUTER DATA LINES SYSTEM COOLANT DIVERTER VALVE ACTR CTRL HI COOLANT DIVERTER VALVE ACTR CTRL LO COOLANT DIVERTER VALVE POSI SIG COOLING TEMP SNS 2 SIG ENG CTRL SENSS 5 VOLT REF (1) ENG CTRL SENSS 5 VOLT REF (2) ENG CTRL SENSS 5 VOLT REF (3) ENG CTRL SENSS LOW REF (1) ENG CTRL SENSS LOW REF (2) ENGINE CONTROL MODULE (ENGINE COMPT, RIGHT SIDE OF BATTERY) ENGINE COOLANT BYPASS VALVE ENGINE COOLANT FLOW CONTROL VALVE ENGINE COOLANT TEMPERATURE SENSOR 3 ENGINE COOLANT TEMPERATURE SENSOR 4 GRN WIRE GRN/BLK WIRE HEATER CORE INLET TEMP SIG HEATER CORE OUTLET TEMP SIG HI SPEED GMLAN SERIAL DATA (+) 1 OUTSIDE AMBIENT AIR TEMPERATURE SENS SIG HI SPEED GMLAN SERIAL DATA (-) 1 HOT W/ IGNITION MAIN RELAY ENERGIZED LOGIC RADIATOR COOLANT TEMPERATURE SENSOR RIGHT SIDE OF RADIATOR) RUN/CRANK IGNITION 1 VOLTAGE SIG GND UNDERHOOD FUSE BLOCK VIO/BLU WIRE VIO/GRN WIRE VIO/GRY WIRE WHT WIRE WHT/GRY WIRE WHT/RED WIRE YEL/BLK WIRE

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 BRN/BLU WIRE BRN/GRY WIRE COMPUTER DATA LINES SYSTEM COOLANT DIVERTER VALVE ACTR CTRL HI COOLANT DIVERTER VALVE ACTR CTRL LO COOLANT DIVERTER VALVE POSI SIG DRIVER INFORMATION CENTER DISPLAY ENG CTRL SENSS 5 VOLT REF (2) ENG CTRL SENSS LOW REF (1) ENG CTRL SENSS LOW REF (2) ENGINE CONTROL MODULE (ENGINE COMPT, RIGHT SIDE OF BATTERY) ENGINE COOLANT BYPASS VALVE ENGINE COOLANT COOLANT FLOW CONTROL VALVE ENGINE COOLANT TEMPERATURE GAUGE ENGINE COOLANT TEMPERATURE IND ETHER NET BUS 7(+) ETHER NET BUS 7(-) GND GRN/BLK WIRE GRY/BLU WIRE HEATER CORE OUTLET TEMP SIG HI SPEED GMLAN SERIAL DATA (-) 1 HOT W/ ENGINE CONTROLS IGNITION RELAY ENERGIZED HOT W/ IGNITION MAIN RELAY ENERGIZED IGN INSTRUMENT CLUSTER LOGIC LOW REF RUN/CRANK IGNITION 1 VOLTAGE SENSOR 2 SIG SIG GND TEMP SIG UNDERHOOD FUSE BLOCK VIO WIRE VIO/BLU WIRE VIO/GRN WIRE VIO/GRY WIRE WHT WIRE WHT/RED WIRE YEL/BLK WIRE

BLK WIRE BLK/GRY WIRE BLK/YEL WIRE BRN/GRY WIRE COMPUTER DATA LINES SYSTEM COOLING FAN MOTOR ENGINE CONTROLS SYSTEM ENGINE COOLANT PUMP ENGINE COOLANT TEMPERATURE SENSOR 3 ENGINE COOLANT TEMPERATURE SENSOR 4 GRN/BLK WIRE HOT AT ALL TIMES LOGIC RADIATOR COOLANT TEMPERATURE SENSOR RED/BLU WIRE RED/BRN WIRE RIGHT SIDE OF RADIATOR) UNDERHOOD AUXILIARY FUSE BLOCK WHT WIRE YEL/BLK WIRE

BK COAX BLK WIRE BLK/YEL WIRE COAX DIMMING CONTROL SWITCH DISPLAY DRIVER OUTSIDE REAR VIEW MIRROR GLASS DRIVER OUTSIDE REAR- VIEW MIRROR GRN/WHT WIRE HOT W/ IGNITION MAIN RELAY ENERGIZED INSIDE REAR VIEW MIRROR LOGIC MIRROR DIMMING ON/OFF SWITCH PASSENGER OUTSIDE REAR VIEW MIRROR PASSENGER OUTSIDE REAR VIEW MIRROR GLASS REAR VIEW CAMERA UNDERHOOD FUSE BLOCK VIO/GRY WIRE WHT WIRE YEL WIRE YEL/WHT WIRE

6-WAY, 8-WAY PASSENGER SEAT ADJUSTER BATT POSITIVE VOLT BLK WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/VIO WIRE COMPUTER DATA LINES SYSTEM DRIVER BACK SEAT HEATING ELEMENT DRIVER CUSHION SEAT HEATING ELEMENT DRV HEATED BACK NTC SIG DRV HEATED SEAT ELEMENT CTRL DRV HEATED SEAT ELEMENT LO REF DRV HEATED SEAT NTC LO REF DRV HEATED SEAT NTC SIG DRV SEAT VENT MTR CTRL 1 EXCEPT 6-WAY, 8-WAY PASSENGER SEAT ADJUSTER FRONT SEAT HEATING CONTROL MODULE (UNDER FRONT PASSENGER SEAT) GRN/BLU WIRE GRN/VIO WIRE GRY/BLK WIRE HOT AT ALL TIMES PASS HEATED BACK NTC LO REF PASS HEATED BACK NTC SIG PASS HEATED SEAT ELEMENT CTRL PASS HEATED SEAT ELEMENT LO REF PASS HEATED SEAT NTC LO REF PASS HEATED SEAT NTC SIG PASS SEAT VENT MTR CTRL 1 PASSENGER BACK SEAT HEATING ELEMENT PASSENGER CUSHION SEAT HEATING ELEMENT RED WIRE RED/BLU WIRE RED/GRN WIRE SERIAL DATA BUS 2 UNDERHOOD FUSE BLOCK VIO/WHT WIRE WHT/BLU WIRE WHT/GRY WIRE YEL/GRY WIRE

"CHECK ENGINE" IND CTRL AJAR SW SIG AMBIENT AIR TEMPERATURE SENSOR BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/RED WIRE BLU/VIO WIRE BLU/WHT WIRE BRAKE FLUID LEVEL SENS SIG BRAKE FLUID LEVEL SWITCH BRAKE SYSTEM CONTROL MODULE BRN/BLU WIRE BRN/WHT WIRE BUS 3 COMPUTER DATA LINES SYSTEM DATA DATA BUS 4 DRIVER DOOR LATCH ASSEMBLY DRIVER WINDOW MOTOR LOGIC ENGINE CONTROL MODULE ENGINE CTRL SENS 5 VOLT REF 1 ENGINE CTRL SENS LO REF (3) ENGINE CTRL SENS LO REF 1 ENGINE OIL LEVEL SWITCH ENGINE OIL PRESSURE SENSOR ENGINE OIL TEMPERATURE SENSOR FUEL LEVEL SENSOR FUEL PUMP DRIVER CONTROL MODULE FUEL PUMP, LEVEL SENSOR ASSEMBLY GRN/GRY WIRE GRN/YEL WIRE GRY WIRE HI SPD GMLAN SERIAL DATA (-) (1) HIGH SPD GMLAN SERIAL DATA (+) 1 HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK LEFT REAR DOOR LATCH ASSEMBLY LEFT REAR WINDOW SWITCH LOGIC LF DR AJAR LIN BUS 31 LOGIC LOW REF LOW REF 2 OIL LEVEL SENS LO REF OIL PRESSURE SENS SIG OIL TEMP SENS SIG OUTSIDE AMBIENT AIR TEMPERATURE SENS SIG PARK BRAKE SWITCH PASSENGER DOOR LATCH ASSEMBLY PASSENGER WINDOW MOTOR LOGIC PRIMARY FUEL LEVEL SENSOR RED/VIO WIRE RF DR AJAR RIGHT REAR DOOR LATCH ASSEMBLY RIGHT REAR WINDOW SWITCH LOGIC SECONDARY FUEL LEVEL SENSOR SENSOR SIGNAL SERIAL DATA (-) 7 SW SIG VIO WIRE WHT WIRE YEL/BRN WIRE

BATT POSITIVE VOLT BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/YEL WIRE BLU/GRN WIRE BRN/BLK WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM DEFOGGER SYSTEM DOWN DRIVER OUTSIDE REAR VIEW MIRROR FOLDING MOTOR DRIVER OUTSIDE REAR VIEW MIRROR GLASS DRIVER OUTSIDE REAR VIEW MIRROR MOTOR DRIVER OUTSIDE REAR- VIEW MIRROR DRIVER SEAT MEMORY CONTROL MODULE DRIVER SIDE OBJECT DETECTION INDICATOR DRIVER WINDOW SWITCH EXTERIOR LIGHTS, NAVIGATION SYSTEMS FOLD OUT GMLAN SERIAL DATA GRN WIRE GRN/WHT WIRE GRY/BRN WIRE GRY/WHT WIRE GRY/YEL WIRE HOT AT ALL TIMES LEFT LEFT TURN SIGNAL REPEATER LAMP LOGIC MEM SEAT SET SIG MEM SEAT SW MEM SW LO REF MIRROR DIMMING MIRRORS SYSTEM NAVIGATION SYSTEM RED/BLU WIRE RED/BRN WIRE RED/WHT WIRE RIGHT SIG (1) UNDERHOOD FUSE BLOCK VIO/BLU WIRE VIO/RED WIRE WHT WIRE WHT/GRN WIRE WHT/YEL WIRE YEL/BRN WIRE YEL/WHT WIRE

BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/YEL WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/YEL WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM DEFOGGER SYSTEM DRIVER SEAT MEMORY SWITCH EXTERIOR LIGHTS, NAVIGATION SYSTEMS GRN/BLK WIRE GRN/VIO WIRE GRN/WHT WIRE GRY/YEL WIRE HOT AT ALL TIMES LOGIC MIRROR DIMMING MIRRORS SYSTEM NAVIGATION SYSTEM PASSENGER OUTSIDE REAR VIEW MIRROR PASSENGER OUTSIDE REAR VIEW MIRROR FOLDING MOTOR PASSENGER OUTSIDE REAR VIEW MIRROR GLASS PASSENGER OUTSIDE REAR VIEW MIRROR MOTOR PASSENGER SIDE OBJECT DETECTION INDICATOR PASSENGER WINDOW SWITCH POWER DISTRIBUTION SYSTEM RED/BLU WIRE RED/BRN WIRE RIGHT TURN SIGNAL REPEATER LAMP SET- UNDERHOOD FUSE BLOCK VIO/WHT WIRE WHT WIRE YEL WIRE YEL/RED WIRE YEL/VIO WIRE YEL/WHT WIRE

3/4 5 VOLT REF AJAR SW SIG 1 AJAR SW SIG 2 AJAR SW SIG 3 BATT POS VOLT BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/VIO WIRE BLK/YEL WIRE BLU/BLK WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY FACE SW SIG GMLAN SERIAL DATA GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRY WIRE GRY/BLK WIRE GRY/GRN WIRE GRY/VIO WIRE GRY/WHT WIRE HANDS-FREE CLOSURE RELEASE SENS SIG 1 HANDS-FREE CLOSURE RELEASE SENS LO REFR 1 HANDS-FREE CLOSURE RELEASE SENS SIG 2 HANDS-FREE CLOSURE RELEASE SENS LO REFR 2 HANDS-FREE LIFTGATE SENSOR CONTROL MODULE HOT AT ALL TIMES INSTRUMENT CLUSTER INTERIOR LIFTGATE CONTROL SWITCH LATCH MTR CLOSE CTRL LATCH MTR OPEN CTRL LEFT LIFTGATE OBJECT SENSOR LIFTGATE CLOSE SWITCH LIFTGATE CONTROL MODULE LIFTGATE LATCH ASSEMBLY LIFTGATE MOTOR ASSEMBLY (UNDER LEFT SIDE OF LIFTGATE) LIFTGATE UNLATCH SWITCH LOGIC LOW REF LOW SPEED GMLAN SERIAL DATA 2 LOWER HANDS-FREE LIFTGATE SENSOR MAX MTR CLOSE CTRL MTR OPEN CTRL MTR RELEASE CTRL 2 NCA WIRE NETWORK BUS 18 OBJ SENS SIG OFF ON/OFF SW SIG OPEN/CLOSE SW SIG POS SIG 1 POS SIG 2 REAR OPEN/ CLOSE SWITCH RED/BRN WIRE RED/VIO WIRE RED/WHT WIRE RIGHT LIFTGATE OBJECT SENSOR RR CLOSURE OPEN SW LED CTRL SW OPEN SIG UNDERHOOD FUSE BLOCK UPPER HANDS-FREE LIFTGATE SENSOR W/ HANDSFREE W/O HANDSFREE WHT WIRE WHT/BLK WIRE WHT/GRY WIRE YEL WIRE YEL/BLU WIRE