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

ACC WAKEUP SER DATA BATTERY FUSE BLOCK BATTERY POSITIVE VOLTAGE BLK WIRE BLU WIRE BLU/YEL WIRE BRAKE FLUID LEVEL SENS SIG BRAKE FLUID LEVEL SWITCH BRAKE SYSTEM CONTROL MODULE COMPUTER DATA LINES SYSTEM GRN/GRY WIRE GRN/VIO WIRE GRN/YEL WIRE GROUND GRY WIRE GRY/BLK WIRE GRY/BRN WIRE GRY/WHT WIRE GRY/YEL WIRE HI SPD GMLAN SER DATA (-) 2 HI SPD GMLAN SERIAL DATA (-) (1) HI SPD GMLAN SERIAL DATA (-) (2) HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED LEFT FRONT WHEEL SPEED SENSOR LEFT REAR WHEEL SPEED SENSOR LF WHEEL SPD SENS CTRL LF WHEEL SPD SENS SIG LOC INTERCONNECT NETWORK BUS 31 LR PARK BRAKE MOTOR APPLY CTRL LR PARK BRAKE MOTOR LOW REF LR WHEEL SPD SENS CTRL LR WHEEL SPD SENS SIG NCA WIRE RED/WHT WIRE RED/YEL WIRE RF WHEEL SPD SENS CTRL RF WHEEL SPD SENS SIG RIGHT FRONT WHEEL SPEED SENSOR RIGHT REAR WHEEL SPEED SENSOR RR PARK BRAKE MOTOR APPLY CTRL RR PARK BRAKE MOTOR LOW REF RR WHEEL SPD SENS CTRL RR WHEEL SPD SENS SIG RUN/CRANK IGNITION 1 VOLTAGE UNDERHOOD FUSE BLOCK VIO WIRE VIO/GRY WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

ACC IGN VOLT ACC WAKEUP SERIAL DATA ACCELERATE SW SIG AIR CONDITIONING SYSTEM ANTI-THEFT SYSTEM BACKUP LP CTRL BATTERY POSITIVE VOLTAGE BLK WIRE BLK/WHT WIRE BLU WIRE BLU/BRN WIRE BLU/VIO WIRE BODY CONTROL MODULE (LOWER CENTER OF DASH) BRN WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/YEL WIRE CHARGE INDICATOR CTRL COMMUNICATION ENABLE COMPUTER DATA LINES SYSTEM COURTESY LP SW SIG CRUISE CONTROL SYSTEM DOOR LK ACTUATOR CTRL 2 DOOR LK ACTUATOR LK CTRL DOOR LK ACTUATOR UNLK CTRL DOOR LOCKS, ANTI-THEFT SYSTEMS DRIVER DOOR LOCK SW LOCK SIG DRIVER DOOR LOCK SW UNLOCK SIG ENGINE START/STOP SWITCH EXTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM FUEL DOOR LOCK RELAY CTRL GAP UP/DOWN SW SIG SET/COAST/RESUME/ 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/GRN WIRE GRY/YEL WIRE HAZ SW LH TURN SIG HAZ SW RH TURN SIG HDLP DIMMER SW HI BEAM SIG HDLP SW FLASH TO PASS SIG HEADLIGHTS SYSTEM HI SPD GMLAN SERIAL DATA (-) (1) HOOD STATUS B SIG PUSH BUTTON START CHALLENGE ACTIVE SIG HORN SW SIG HORNS SYSTEM IGNITION MODE SWITCH IMMOBILIZER CTRL IMMOBILIZER LOW REF INADVERTENT PWR CTRL IND INTERIOR LP CTRL LED AMBIENT LIGHTING CTRL 1 LED BACKLIGHT DIMMING CTRL LEFT HDLP BULB OUTAGE REAR CLOSURE HANDLE SW OPEN SIG LF DRL CTRL LIFT GLASS/RR COMPT LID MTR REL CTRL LH HDLP LOW BEAM RLY CTRL LH PARK LP CTRL LIFT GATE AJAR SWITCH SIG (1) LIN SERIAL DATA BUS 1 LIN SERIAL DATA BUS 11 LIN SERIAL DATA BUS 15 LIN SERIAL DATA BUS 2 LIN SERIAL DATA BUS 3 MIRROR PUDDLE LAMP CTRL PASS DOOR LK SW UNLK CTRL PASSENGER DOOR LOCK SW LOCK CTRL POWER DISTRIBUTION SYSTEM REAR COMPT LID LP 2 CTRL REAR LICENSE LP CTRL REAR TURN LP FEEDBACK SIG REAR WIPER MTR RLY COIL CTRL RED WIRE RED/WHT WIRE RF TURN SIG LP CTRL RH HDLP LOW BEAM RLY CTRL RH PARK LP CTRL RIGHT HDLP BULB OUTAGE RR STOP LP CTRL RR TURN LP FEEDBACK SIG RR TURN SIG LP CTRL RUN/CRANK IGN 1 VOLT RUN/CRANK RLY COIL CTRL WINDSHIELD WIPER MTR RLY COIL CTRL SEATS SYSTEM SECURITY LOCK RELAY CONTROL SIGNAL GROUND STARTING/CHARGING SYSTEM STOP LP RLY COIL CTRL TAP UP/TAP DOWN SW SIG TRANSMISSIONS SYSTEM TRANSMISSIONS, CRUISE CONTROL SYSTEM VIO WIRE VIO/BLK WIRE VIO/GRY WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/VIO WIRE WHT/YEL WIRE WINDSHIELD WASHER SW SIG WINDSHIELD WIPER MTR PARK SW SIG BLOWER SPD FEEDBACK SIG WIPER SW HI SIG WIPER SW LOW REF WIPER SW LOW SIG WIPER/WASHER SYSTEM YEL WIRE YEL/BLU WIRE YEL/GRN WIRE

BACKUP LAMP CTRL BATTERY POST VOLT BLK/BRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BRN/BLU WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM FF LOW LVL AUDIO (-) LOW REF GRN WIRE GRN/BLK WIRE GRY/GRN WIRE GRY/YEL WIRE HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK LEFT STEERING WHEEL CONTROLS SWITCH LF AUDIO LOW REF SER DATA COMM ENABLE LF LOW LVL AUDIO SIG LO SPD GMLAN SER DATA 2 LOGIC LR LOW LVL AUDIO (-) LOW REF LR LOW LVL AUDIO SIG LT BLU/RED WIRE MICROPHONE LO REF MICROPHONE SIG MUTE NCA WIRE POWER SUPPLY TRANSFORMER RADIO RED WIRE RED/BLU WIRE RED/VIO WIRE RED/YEL WIRE RF LOW LVL AUDIO (-) LOW REF RF LOW LVL AUDIO SIG RR LOW LVL AUDIO SIG SER DATA SER DATA (+) 9 SIG GND STEERING WHEEL AIR BAG COIL SUPPLY VOLT 1 VIO/YEL WIRE VOICE VOICE RECOGNITION AUDIO SIG CELLULAR TELEPHONE MICROPHONE SIG VOICE RECOGNITION LO REF VOICE RECOGNITION AUDIO SIG W/ ONSTAR W/O ONSTAR WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE

AUDIO LOW REF AUDIO SIG + BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/RED WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BRN/BLU WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE CELL COAX COMPUTER DATA LINES SYSTEM DOWN GPS GRN WIRE GRN/BLK WIRE GRY/GRN WIRE GRY/YEL WIRE HIGH SPD GMLAN INFOTAINMENT CONTROL SWITCH LEFT LEFT FRONT MOBILE TELEPHONE MICROPHONE LOGIC LOW REF LT BLU/RED WIRE MICROPHONE (-) LOW REF MICROPHONE SIG NCA WIRE PNK WIRE PPL/YEL WIRE RED WIRE RED/BLU WIRE RED/VIO WIRE RIGHT RIGHT FRONT MOBILE TELEPHONE MICROPHONE RIGHT STEERING WHEEL CONTROLS SWITCH SEEK DOWN SEEK UP SEL SERIAL DATA (-) 9 VIO/YEL WIRE VOL (-) W/ ONSTAR W/O ONSTAR WHT/BLK WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE

ACCESSORY WAKEUP SERIAL DATA BLK WIRE BLK/WHT WIRE BLOWER MOTOR BLU WIRE BLU/BLK WIRE BODY CONTROL MODULE BRN WIRE COMPUTER DATA LINES SYSTEM DRIVER WINDOW SWITCH ENGINE CONTROL MODULE FROM INSTRUMENT PANEL FUSE BLOCK (DIAGRAM 5 OF 7) FUEL PUMP DRIVER CONTROL MODULE GRN WIRE GRY WIRE HANDS-FREE LIFTGATE CONTROL MODULE HIGH SPEED GMLAN SERIAL DATA (+) 3 IGN MODE SW START LED SIG IGN MODE SWITCH MODE VOLT IGNITION MODE SWITCH INTERIOR KEYLESS ENTRY CONTROL MODULE LIFTGATE CONTROL MODULE LIGHTS SYSTEM PASSENGER WINDOW SWITCH PASSIVE START SW 2 LOW REF PASSIVE START SW SIG 2 POWER SUPPLY TRANSFORMER PUSH BUTTON START CHALLENGE ACTIVE SIG REAR DIFFERENTIAL CLUTCH CONTROL MODULE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RUN/CRANK IGN 1 VOLTAGE SPLY VOLTAGE 1 SPLY VOLTAGE 2 STARTER ENABLE RLY CTRL STARTER RELAY TO IGNITION MAIN RELAY (DIAGRAM 4 OF 7) TO INSTRUMENT PANEL FUSE BLOCK (DIAGRAM 7 OF 7) VIO WIRE VIO/GRY WIRE VIO/YEL WIRE W/ MEMORY WHT WIRE YEL WIRE YEL/BLK WIRE YEL/VIO WIRE

BATTERY POST VOLT BLK/BRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BRN/BLU WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM FF LOW LVL AUDIO (-) LOW REF RF LOW LVL AUDIO SIG GRN WIRE GRN/BLK WIRE GRY/GRN WIRE GRY/YEL WIRE HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK LEFT STEERING WHEEL CONTROLS SWITCH LF AUDIO LOW REF SER DATA COMM ENABLE LF LOW LVL AUDIO SIG LOGIC LR LOW LVL AUDIO (-) LOW REF LR LOW LVL AUDIO SIG LT BLU/RED WIRE MICROPHONE LO REF MICROPHONE SIG MUTE NCA WIRE POWER SUPPLY TRANSFORMER RADIO RED WIRE RED/BLU WIRE RED/VIO WIRE RED/YEL WIRE RF LOW LVL AUDIO (-) LOW REF RR LOW LVL AUDIO SIG SER DATA SER DATA (+) 9 SER DATA (-) 9 BACKUP LAMP CTRL SER DATA (-) LO SPD GMLAN SER DATA 2 SIG GND STEERING WHEEL AIR BAG COIL SUPPLY VOLT 1 VIO/YEL WIRE VOICE VOICE RECOGNITION AUDIO SIG CELLULAR TELEPHONE MICROPHONE SIG VOICE RECOGNITION LO REF VOICE RECOGNITION AUDIO SIG W/ ONSTAR W/O ONSTAR WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE

AUDIO LOW REF AUDIO SIG + BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/RED WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BRN/BLU WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE CELL COAX COMPUTER DATA LINES SYSTEM DOWN GPS GRN WIRE GRN/BLK WIRE GRY/GRN WIRE GRY/YEL WIRE HIGH SPD GMLAN INFOTAINMENT CONTROL SWITCH LEFT LEFT FRONT MOBILE TELEPHONE MICROPHONE LOGIC LOW REF LT BLU/RED WIRE MICROPHONE (-) LOW REF MICROPHONE SIG NCA WIRE PNK WIRE PPL/YEL WIRE RED WIRE RED/BLU WIRE RED/VIO WIRE RIGHT RIGHT FRONT MOBILE TELEPHONE MICROPHONE RIGHT STEERING WHEEL CONTROLS SWITCH SEEK DOWN SEEK UP SEL SERIAL DATA (-) 9 VIO/YEL WIRE VOL (-) W/ ONSTAR W/O ONSTAR WHT/BLK WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE

BATTERY POSITIVE VOLTAGE BATTERY POST VOLT BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM DOWN GRN WIRE GRN/BLK WIRE GROUND GRY/GRN WIRE GRY/YEL WIRE HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK LEFT LOGIC LT BLU/RED WIRE MICROPHONE LO REF MICROPHONE SIG PNK WIRE POWER SUPPLY TRANSFORMER RADIO RED WIRE RED/BLU WIRE RED/VIO WIRE RED/YEL WIRE RIGHT RIGHT STEERING WHEEL CONTROLS SWITCH SEEK DOWN SEEK UP SER DATA SER DATA (+) 9 SER DATA (-) 9 BACKUP LAMP CTRL SER DATA (-) LO SPD GMLAN SER DATA 2 SER DATA COMM ENABLE STEERING WHEEL AIR BAG COIL SUPPLY VOLTAGE 1 VIO/YEL WIRE VOICE RECOGNITION AUDIO SIG VOICE RECOGNITION LO REF VOL (-) VOL - SEL W/ ONSTAR W/O ONSTAR WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE

AUDIO LOW REF AUDIO SIG + BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE CELL COAX COMPUTER DATA LINES SYSTEM GPS GRN WIRE GRY/GRN WIRE GRY/YEL WIRE HIGH SPD GMLAN INFOTAINMENT CONTROL SWITCH LEFT FRONT MOBILE TELEPHONE MICROPHONE LEFT STEERING WHEEL CONTROLS SWITCH LOGIC LOW REF LT BLU/RED WIRE MICROPHONE (-) LOW REF MICROPHONE SIG MUTE NCA WIRE PNK WIRE PPL/YEL WIRE RED WIRE RED/BLU WIRE RED/VIO WIRE RIGHT FRONT MOBILE TELEPHONE MICROPHONE SERIAL DATA (-) 9 VIO/YEL WIRE VOICE W/ ONSTAR W/O ONSTAR WHT/BLK WIRE WHT/GRN WIRE

ACCY WAKEUP SER DATA AUTO STOP START INDICATOR CTRL AUTO STOP START SW SIG BATT POS VOLT BLK WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BODY CONTROL MODULE (LOWER CENTER OF DASH) COMPUTER DATA LINES SYSTEM ENGINE CONTROL MODULE (ENGINE COMPT, RIGHT SIDE OF BATTERY) GRN WIRE GRY WIRE HI SPD GMLAN SER DATA (+) 3 HI SPD GMLAN SERIAL DATA (-) (1) HI SPD GMLAN SERIAL DATA (-) 1 INDICATOR DIMMING CTRL HIGH SPEED GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED IGN MODE SW START LED SIG IGNITION MODE SWITCH INSTRUMENT PANEL FUSE BLOCK KEYLESS ENTRY CONTROL MODULE (FRONT OF CENTER FLOOR CONSOLE) LOW SPD GMLAN SERIAL DATA PASSIVE START SW 2 LOW REF PASSIVE START SW SIG 2 POWER DISTRIBUTION SYSTEM POWER SUPPLY TRANSFORMER (UNDER FRONT OF CENTER FLOOR CONSOLE) RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/YEL WIRE RUN/CRANK IGN 1 VOLT SIG GND STARTER ENABLE RLY CTRL STARTER PINION SOL RLY CTRL UNDERHOOD FUSE BLOCK VIO/GRN WIRE VIO/GRY WIRE VIO/YEL WIRE WHT WIRE YEL/BLK WIRE YEL/VIO WIRE