Buick Envista I (2022-2024) engine control module Wiring diagrams

5-VOLT REF 1 A/C COMPRESSOR CLUTCH RLY CTRL A/C EVAPORATOR TEMP SENS SIG A/C ON IND A/C ON SWITCH A/C REFRIGERANT PRESS SENS SIG A/C REFRIGERANT PRESSURE SENSOR AIR INLET DOOR ACTUATOR CTRL 1 AIR INLET DOOR ACTUATOR CTRL 2 AIR INLET DOOR ACTUATOR CTRL 3 AIR INLET DOOR ACTUATOR CTRL 4 AIR RECIRCULATION DOOR ACTUATOR AIR TEMP DOOR CTRL 1 AIR TEMP DOOR CTRL 2 AIR TEMP DOOR CTRL 3 AIR TEMP DOOR CTRL 4 AMBIENT AIR TEMP SENS SIG BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/RED WIRE BRN WIRE BRN/GRN WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM COOLING FAN HI SPD RLY CTRL COOLING FAN LOW SPD RLY CTRL ENG COOLANT TEMP SENS SIG ENGINE CONTROL MODULE ENGINE CONTROLS SYSTEM ENGINE CTRL MODULE LIN BUS 1 ENGINE CTRL SENS ENGINE CTRL SENS LOW REF 2 FAN 3 CTRL FSD SUPPLY VOLT 1 GRN WIRE GRN/VIO WIRE GRY WIRE GRY/BLU WIRE HI SPD GMLAN SERIAL DATA (-) (1) HOT W/ ENGINE CONTROLS IGNITION RELAY ENERGIZED HVAC CONTROL MODULE (CENTER OF DASH) HVAC DOOR ACTUATOR CTRL LEFT AIR TEMPERATURE DOOR ACTUATOR LOGIC LOW REF (1) MODE DOOR ACTUATOR MODE DOOR CTRL 1 MODE DOOR CTRL 2 MODE DOOR CTRL 3 MODE DOOR CTRL 4 POWERTRAIN MAIN RLY SENS LOW REF SIG GND UNDERHOOD FUSE BLOCK VIO/BLU WIRE VIO/GRN WIRE WHT WIRE WHT/BLK WIRE WHT/GRY WIRE YEL WIRE YEL/GRN WIRE

BATT POS VOLT BATTERY BATTERY FUSE BLOCK BATTERY SENSOR MODULE BLK WIRE BLK/WHT WIRE BLU WIRE BODY CONTROL MODULE (BELOW CENTER OF DASH) BRN WIRE CHARGE IND CHARGE IND CTRL COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY ENG CTRL MODULE LIN BUS 1 ENGINE CONTROL MODULE GENERATOR GENERATOR FIELD DUTY CYCLE SIG GRN WIRE GRN/VIO WIRE GRY WIRE HIGH SPEED GMLAN SERIAL DATA (-) (1) HOT W/ BATTERY SAVER RELAY 1 ENERGIZED HOT W/ IGNITION MAIN RELAY ENERGIZED INFOTAINMENT DISPLAY SIG INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK LOGIC LOW SPEED GMLAN SERIAL DATA (+) 1 LVDS BK RED/BRN WIRE RED/WHT WIRE RED/YEL WIRE RUN/CRANK IGN 1 VOLT SIG GND STARTER MOTOR UNDERHOOD FUSE BLOCK VIO WIRE VIO/GRY WIRE WHT WIRE

ACC WAKEUP SERIAL DATA ACTIVE GRILLE AIR SHUTTER 1 ACTUATOR AUXILIARY COOLANT PUMP BATTERY SENSOR MODULE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE ENGINE CONTROL MODULE ENGINE CTRL MODULE LIN BUS 1 ENGINE CTRL MODULE LIN BUS 2 ENGINE CTRL MODULE LIN BUS 4 EVAPORATIVE EMISSION PURGE PUMP FUEL PUMP DRIVER CONTROL MODULE GRN/BRN WIRE GRN/VIO WIRE GRN/WHT WIRE HI SPD GMLAN SERIAL DATA (+) (3) HI SPD GMLAN SERIAL DATA (-) (1) HI SPD GMLAN SERIAL DATA (-) 7 LIN BUS 1 LIN BUS 2 LIN BUS 4 MULTI-FUNCTION INTAKE AIR SENSOR POWERTRAIN SENS BUS ENABLE VIO/GRN WIRE VIO/YEL WIRE WHT WIRE

12 VOLT REF ACC PEDAL POSI 5 VOLT REF 1 ACC PEDAL POSI 5 VOLT REF 2 ACC PEDAL POSI LOW REF 1 ACC PEDAL POSI POS SIG 1 ACC PEDAL POSI SIG 2 ACCELERATOR PEDAL POSITION SENSOR BATT POS VOLT BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (BELOW CENTER OF DASH) BRAKE PEDAL POSITION SENSOR (TOP OF BRAKE PEDAL ASSEMBLY) BRK APPLY SENS LOW REF BRK APPLY SENS SIG BRK APPLY SENS VOLT REF BRK POSI SENS SIG BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CRUISE CTRL SET/COAST/ RESUME/ACC SW SIG CRUISE/ETC/ TCC BRK SIG CRUISE/ETC/TCC BRK SIG DISTANCE SENSING CRUISE CTRL GAP UP/DOWN SW SIG ENGINE CONTROL MODULE ENGINE CTRL SENS LOW REF 2 ENGINE CTRL VEHICLE SENS 5 VOLT REF 1 GRN/WHT WIRE GROUND GRY/GRN WIRE HI SPD GMLAN SER DATA (+) 1 HI SPD GMLAN SER DATA (+) 3 HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED INSTRUMENT PANEL FUSE BLOCK RED/VIO WIRE RUN/CRANK IGNITION 1 VOLT 1 ACC PEDAL POSI LOW REF 2 THROTTLE ACTUATOR CLOSE CTRL THROTTLE ACTUATOR OPEN CTRL THROTTLE BODY (LEFT REAR OF ENGINE) THROTTLE POSI SENS 5 VOLT REF THROTTLE POSI SENS LOW REF THROTTLE POSI SENS SENT 1 SIG UNDERHOOD FUSE BLOCK VIO/GRY WIRE W/ ADAPTIVE CRUISE CONTROL WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE YEL/WHT WIRE

BLK/GRY WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/VIO WIRE BRN/GRN WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM DRIVER DOOR LATCH ASSEMBLY DRIVER WINDOW SWITCH ENG CTRL VEH ENGINE CONTROL MODULE ENGINE CONTROLS SYSTEM ENGINE HOOD SWITCH GRN/GRY WIRE GRN/YEL WIRE GRY WIRE HOOD STATUS A SIG LOGIC NCA WIRE PASSENGER DOOR LATCH ASSEMBLY PASSENGER WINDOW SWITCH RIGHT REAR DOOR LATCH ASSEMBLY RIGHT REAR WINDOW SWITCH SENS LO REF 1 SERIAL DATA (-) (1) VIO/BLK WIRE VIO/YEL WIRE WHT WIRE WHT/VIO WIRE YEL WIRE YEL/BLU WIRE

A/C COMPRESSOR CLUTCH ACTIVE GRILLE AIR SHUTTER 1 ACTUATOR AUXILIARY COOLANT PUMP BLK WIRE BRAKE FLUID LEVEL SWITCH BRN WIRE CENTER HIGH MOUNTED STOP LAMP CONTROL SOLENOID VALVE ASSEMBLY ENGINE CONTROL MODULE EVAPORATIVE EMISSION PURGE PUMP HORN IGNITION MAIN RELAY INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE INSTRUMENT CLUSTER LEFT FRONT TURN SIGNAL LAMP LEFT HEADLAMP ASSEMBLY LEFT HEADLAMP MULTI-FUNCTION LED LEFT PARK/DAYTIME RUNNING LAMP LIFTGATE CLOSE SWITCH MULTI-FUNCTION CARRIER LICENSE PLATE LAMP MULTI-FUNCTION INTAKE AIR SENSOR NCA WIRE PASSENGER PRESENCE MODULE RADIO RADIO CONTROLS REAR DEFOGGER RELAY REAR WINDOW WASHER PUMP RELAY REAR WIPER RELAY RIGHT BACKUP LAMP RIGHT LIFTGATE TAIL LAMP ASSEMBLY RIGHT OUTER TAIL LAMP RIGHT REAR SIDE MARKER LAMP RIGHT TAIL LAMP ASSEMBLY RIGHT TAIL/STOP LAMP STARTER RELAY TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE UNDERHOOD FUSE BLOCK USB RECEPTACLE W/ FRONT GRILLE SHUTTERS WHT WIRE WINDSHIELD WASHER PUMP RELAY WINDSHIELD WIPER RELAY

AMBIENT LIGHT/ SUNLOAD SENSOR BATT POS VOLT HOOD STATUS B SIG BK LVDS INFO DISPLAY SIG BLK WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BODY CONTROL MODULE (BELOW CENTER OF DASH) BRN/GRN WIRE COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY ENG CTRL VEH SENS LO REF 1 ENGINE CONTROL MODULE ENGINE CONTROLS SYSTEM ENGINE HOOD SWITCH GRN WIRE GRN/GRY WIRE GRN/PPL WIRE GRN/VIO WIRE GRY WIRE GRY/BLK WIRE HI SPD GMLAN SERIAL DATA (-) (1) HOOD STATUS A SIG HOT AT ALL TIMES HVAC CONTROL MODULE IMMOBILIZER CONTROL MODULE (UPPER FRONT FLOOR CONSOLE) IMMOBILIZER CTRL MOD CTRL IMMOBILIZER LIN BUS 1 INSTRUMENT CLUSTER LO SPD GMLAN SERIAL DATA LOGIC NCA WIRE RED/BRN WIRE SECURITY IND CTRL SECURITY INDICATOR SERIAL DATA (-) (1) SOLAR SENSOR LOW REF UNDERHOOD FUSE BLOCK VEH ANTI-THEFT SYS IMMOBILIZER LOW REF WHT WIRE YEL WIRE

BLK/GRY WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/VIO WIRE BRN/GRN WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM DRIVER DOOR LATCH ASSEMBLY DRIVER WINDOW SWITCH ENG CTRL VEH ENGINE CONTROL MODULE ENGINE CONTROLS SYSTEM ENGINE HOOD SWITCH GRN/GRY WIRE GRN/YEL WIRE GRY WIRE HOOD STATUS A SIG LOGIC NCA WIRE PASSENGER DOOR LATCH ASSEMBLY PASSENGER WINDOW SWITCH RIGHT REAR DOOR LATCH ASSEMBLY RIGHT REAR WINDOW SWITCH SENS LO REF 1 SERIAL DATA (-) (1) VIO/BLK WIRE VIO/YEL WIRE WHT WIRE WHT/VIO WIRE YEL WIRE YEL/BLU WIRE

AUTOMATIC TRANSMISSION ASSEMBLY BATT POS VOLT BLK WIRE BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLU/GRN WIRE BODY CONTROL MODULE (BELOW CENTER OF DASH) CENTER CONSOLE MULTI-FUNCTION SWITCH COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY ENGINE CONTROL MODULE GRN WIRE GRN/BLK WIRE HIGH SPEED GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED IGN MODE SW VOLT IGNITION MODE SWITCH IND DIMMING CTRL KEYLESS ENTRY CONTROL MODULE LED BACKLIGHT DIMMING CTRL 1 STOP/START IND CTRL LOW SPEED GMLAN PASSIVE START SW 2 LO REF PASSIVE START SW SIG 2 RED/BRN WIRE RUN/CRANK IGN 1 VOLT SIG GND STARTER ENABLE RELAY CTRL STOP/START SW SIG TRANSMISSION CONTROL MODULE TRANSMISSION INTERNAL MODE SWITCH TRANSMISSION PARK/ NEUTRAL SIG 1 UNDERHOOD FUSE BLOCK VIO/GRY WIRE WHT WIRE WHT/GRY WIRE YEL WIRE YEL/BLK WIRE

AUTOMATIC TRANSMISSION ASSEMBLY BLK WIRE BLK/WHT WIRE BLU WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY ENGINE CONTROL MODULE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE HIGH SPEED GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES HOT W/ ENGINE CONTROLS IGNITION RELAY ENERGIZED HOT W/ IGNITION MAIN RELAY ENERGIZED PRESSURE CONTROL SOLENOID VALVE 1 PRESSURE CONTROL SOLENOID VALVE 2 PRESSURE CONTROL SOLENOID VALVE 3 PRESSURE CONTROL SOLENOID VALVE 4 PRESSURE CONTROL SOLENOID VALVE 5 RED/YEL WIRE SHIFT SOLENOID VALVE 1 SOL VALVE LOW SIDE CTRL TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID VALVE TRANS PARK/ NEUTRAL SIG 1 TRANSMISSION CONTROL MODULE TRANSMISSION FLUID PRESSURE SWITCH TRANSMISSION FLUID TEMPERATURE SENSOR TRANSMISSION INPUT SHAFT SPEED SENSOR TRANSMISSION INTERNAL MODE SWITCH TRANSMISSION OUTPUT SHAFT SPEED SENSOR UNDERHOOD FUSE BLOCK VIO/BLU WIRE VIO/GRY WIRE VIO/YEL WIRE WHT WIRE WHT/GRY WIRE YEL WIRE YEL/BLU WIRE YEL/GRN WIRE