Buick Envista I (2022-2024) engine ctrl module lin bus 1 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

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

A/C REFRIGERANT PRESS SENS SIG A/C REFRIGERANT PRESSURE SENSOR AMBIENT AIR TEMP SENS SIG AUXILIARY COOLANT PUMP BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLU/GRY WIRE BLU/RED WIRE BRN/RED WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM COOLING FAN HI SPD RLY CTRL COOLING FAN LOW SPD RLY CTRL COOLING FAN MOTOR (BEHIND RADIATOR) ENGINE CONTROL MODULE (RIGHT SIDE OF ENGINE COMPT) ENGINE COOLANT TEMP SENS SIG ENGINE COOLANT TEMPERATURE SENSOR ENGINE CTRL MODULE LIN BUS 1 ENGINE CTRL SENS 5 VOLT REF 1 ENGINE CTRL SENS LOW REF 2 ENGINE CTRL VEHICLE SENS LOW REF SIG GND FAN 3 CTRL GRN WIRE GRN/VIO WIRE GRY WIRE HI SPEED GMLAN SERIAL DATA (-) 1 HOT AT ALL TIMES HOT W/ BATTERY SAVER RELAY 1 ENERGIZED HOT W/ ENGINE CONTROLS IGNITION RELAY ENERGIZED INSTRUMENT PANEL FUSE BLOCK POWERTRAIN MAIN RLY FUSED SUPPLY VOLT 1 RED/BRN WIRE RED/VIO WIRE UNDERHOOD FUSE BLOCK VIO/BLU WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE