Buick LaCrosse III (2016-2019) Automatic a/c circuit

AIR QUALITY SENS SIG AMBIENT LIGHT/SUNLOAD SENSOR (TOP CENTER OF DASH) BATT POS VOLT BLK WIRE BLK/BLU WIRE BLOWER MOTOR (BOTTOM OF HVAC BLOWER HOUSING) BLWR MTR SPD CTRL BRN WIRE BUS 15 COMPUTER DATA LINES SYSTEM DEFOGGER SYSTEM DK BLU WIRE DK BLU/BRN WIRE DK BLU/GRY WIRE DK BLU/YEL WIRE DK GRN/WHT WIRE DK GRN/YEL WIRE DOOR LOCKS, ANTI-THEFT SYSTEMS ELECTRIC VARIABLE DISPLACEMENT CTRL ELECTRIC VARIABLE DISPLACEMENT SUPPLY FUSE 33 FUSE 39 FUSE 4 GROUND GRY WIRE GRY/BLU WIRE GRY/GRN WIRE HEADLIGHTS SYSTEM HOT AT ALL TIMES HUMIDITY SENSOR SIGNAL HUMIDITY TEMPERATURE SENSOR SIGNAL HUMIDITY/WINDSCREEN TEMPERATURE SENSOR LOW REFERENCE HVAC CONTROL MODULE (BEHIND HVAC CONTROLS) INSIDE AIR TEMPERATURE SENSOR SIGNAL INSTRUMENT PANEL FUSE BLOCK LINEAR INTERCONNECT NETWORK SERIAL DATA BUS 9 LOGIC LOGIC WINDSHIELD TEMPERATURE, INSIDE MOISTURE SENSOR LOW SPEED GMLAN SERIAL DATA LT GRN WIRE REAR DEFOG RELAY CTRL RED/DK BLU WIRE RED/LT BLU WIRE RED/VIO WIRE RED/WHT WIRE RUN/CRANK IGNITION 1 VOLTAGE SERIAL DATA SOLAR SENSOR DRIVER SIGNAL SOLAR SENSOR LOW REFERENCE VIO/GRY WIRE VIO/WHT WIRE W/ ONSTAR W/O ONSTAR WHT WIRE WINDSCREEN TEMPERATURE SENSOR SIGNAL YEL WIRE YEL/BLU WIRE YEL/RED WIRE

A/C COMPRESSOR A/C COMPRESSOR CLUTCH A/C COMPRESSOR CLUTCH RELAY A/C COMPRESSOR SOLENOID VALVE A/C HEV FUSE A/C ON IND A/C ON SWITCH AIR QUALITY SENSOR (BELOW AIR INLET GRILL PANEL) AUTO IND UPPER AIR OUTLET IND AUTO SWITCH BLK WIRE BRN/LT GRN WIRE COMPUTER DATA LINES SYSTEM DATA BUS 9 DK BLU/BRN WIRE DK BLU/YEL WIRE DK GRN/YEL WIRE DRIVER HEATED SEAT SWITCH DRIVER TEMPERATURE DISPLAY HOT AT ALL TIMES HOT W/ ENGINE CONTROLS IGNITION RELAY ENERGIZED HOT W/ IGNITION MAIN RELAY ENERGIZED HVAC CONTROLS IGN VOLT AIR QUALITY SENS SIG IP BODY IGN FUSE LEFT HIGH SEAT HEAT IND LEFT LOW SEAT HEAT IND LEFT MED SEAT HEAT IND LOGIC LOWER AIR OUTLET IND LOWER AIR OUTLET SWITCH LT GRN WIRE MAX IND MAX SWITCH PASSENGER HEATED SEAT SWITCH PASSENGER TEMPERATURE DISPLAY REAR DEFOGGER IND REAR DEFOGGER SWITCH RECIRCULATION IND RECIRCULATION SWITCH RED WIRE RED/LT BLU WIRE RED/WHT WIRE RIGHT HIGH SEAT HEAT IND RIGHT LOW SEAT HEAT IND RIGHT MED SEAT HEAT IND SERIAL DATA START STOP IND START/ STOP SWITCH SYNC SWITCH UNDERHOOD FUSE BLOCK UPPER AIR OUTLET SWITCH VIO/GRY WIRE VIO/WHT WIRE WHT/GRY WIRE WINDSHIELD DEFROST IND SYNC IND WINDSHIELD DEFROST SWITCH

AIR RECIRCULATION DOOR ACTUATOR BLK/YEL WIRE BLU/BRN WIRE BLU/YEL WIRE COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY ENGINE COOLANT TEMPERATURE GAUGE ENGINE COOLANT TEMPERATURE IND GRN WIRE GRY/GRN WIRE GRY/RED WIRE GRY/VIO WIRE INSTRUMENT CLUSTER LEFT AIR TEMPERATURE DOOR ACTUATOR LOGIC MODE DOOR ACTUATOR MOST SERIAL DATA (+) RED/WHT WIRE VIO/GRN WIRE WHT WIRE WHT/GRN WIRE WHT/GRY WIRE YEL/BLK WIRE YEL/BRN WIRE

A/C EVAPORATOR TEMPERATURE SENSOR AIR IONIZER AIR IONIZER ELECTRODE BLK WIRE BLK/YEL WIRE BLU/BRN WIRE BLU/YEL WIRE BRN WIRE BRN/BLU WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM DUCT LEFT LOWER AIR TEMPERATURE SENSOR DUCT LEFT UPPER AIR TEMPERATURE SENSOR DUCT RIGHT LOWER AIR TEMPERATURE SENSOR DUCT RIGHT UPPER AIR TEMPERATURE SENSOR GRID - GRN WIRE GRN/BLU WIRE GRY WIRE GRY/BLK WIRE GRY/GRN WIRE GRY/RED WIRE HVAC CONTROL MODULE (BEHIND HVAC CONTROLS) RED/WHT WIRE RIGHT AIR TEMPERATURE DOOR ACTUATOR SERIAL DATA VIO/GRN WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/YEL WIRE YEL/BLK WIRE YEL/BRN WIRE

A/C PRESS SENS A/C REFRIGERANT PRESS SENS SIG A/C REFRIGERANT PRESSURE SENSOR AIR TEMP SENS SIG AMBIENT AIR TEMPERATURE SENSOR BATT POS VOLT BATT POS VOLT COOLING FAN CTRL RELAY SPEED SIG BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/WHT WIRE BLU WIRE BLU/GRY WIRE BRN/RED WIRE CLUTCH RELAY CTRL COMPUTER DATA LINES SYSTEM COOL FAN FUSE DK BLU WIRE DK GRN WIRE EBOOST/COOL FAN LT FUSE ENG COOLANT TEMP SENS SIG ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) ENGINE COOLANT TEMPERATURE SENSOR FUSE 9 GROUND HI SPEED GMLAN SERIAL DATA (-) 1 HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK LEFT COOLING FAN MOTOR (BEHIND LEFT SIDE OF RADIATOR) LOGIC NCA WIRE RED/BRN WIRE RED/YEL WIRE RELAY SPEED SIG RIGHT COOLING FAN MOTOR (BEHIND RIGHT SIDE OF RADIATOR) SENS LOW REF SIG GROUND UNDERHOOD FUSE BLOCK WHT WIRE WHT/BLK WIRE WHT/GRY WIRE