Buick LaCrosse I (2004-2009) 3.8l vin 2, automatic a/c circuit

12 13 14 15 16 PPL 8 1450 734 720 INTERIOR LIGHTS SYSTEM A/C CLU DIODE A/C CLUTCH FUSE 13 A/C COMP RELAY 38 AUTO OFF BLOWER MOTOR SW BATTERY IGN 1 VOLT CLASS 2 SERIAL BLK WIRE BLK/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DEFOGGER IND DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE FAN 1 FUSE 29 FAN 1 RELAY 42 FAN 2 FUSE 32 FAN 2 RELAY 46 FAN 3 RELAY 43 GROUND GRY WIRE GRY/BLK WIRE HIGH LOW HOT AT ALL TIMES HOT IN RUN OR START HVAC CONTROL MODULE (CENTER OF DASH) ILLUM LOGIC LOWER LEFT AIR TEMPERATURE SENSOR (BEHIND HVAC CONTROL MODULE) LOWER RIGHT AIR TEMPERATURE SENSOR (BEHIND HVAC CONTROL MODULE) LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE MODE ACTUATOR (LOWER LEFT SIDE OF HVAC ASSEMBLY) MODE SWITCH ORG/ WIRE ORG/BLK WIRE PNK WIRE PNK/WHT WIRE REAR DEFOGGER SWITCH RECIRCULATION ACTUATOR (NEAR RIGHT "A" PILLAR, ON UPPER HVAC CASE) RECIRCULATION IND RECIRCULATION SWITCH REQUEST SWITCH A/C A/C REQUEST IND SENSOR SIG SENSOR SIG LOW REF SENSOR SIG LOW REF SENSOR SIG LOW REF SENSOR SIG LOW REF SENSOR SIG SENSOR SIG LOW REF PPL SPEED CTRL TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TEMPERATURE CONTROL SW UNDERHOOD FUSE BLOCK (MOUNTED TO RIGHT STRUT TOWER) WHT WIRE WHT/BLK WIRE YEL WIRE

12 13 14 15 16 PPL 31 4 7 50 48 15 33 A/C PRESS SIGNAL 55 29 ECT SENS SIG LOW REF A/C REFRIGERANT PRESSURE SENSOR (ON LEFT SIDE OF ENGINE COMPT, BATT MAIN 4 FUSE 30 BLK WIRE BLK/WHT WIRE BLOWER MOTOR (BEHIND RIGHT BLOWER MOTOR CONTROL PROCESSOR (ON LOWER RIGHT SIDE OF DASH) BRN WIRE COMPUTER DATA LINES SYSTEM DISPLAY FUSE 18 DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE COOLANT TEMPERATURE (ECT) SENSOR (ON TOP RIGHT OF INTAKE MANIFOLD) GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT AT ALL TIMES I/P FUSE BLOCK HVAC FUSE (BEHIND RIGHT SIDE OF DASH) HOT IN RUN OR START IGN 1 VOLT INSIDE AIR TEMPERATURE SENSOR (LEFT SIDE OF DASH, ON RIGHT OF STEERING COLUMN) LEFT COOLING FAN MOTOR LOW REF RELAY CTRL RELAY CTRL CLASS 2 SERIAL A/C COMP CLUTCH LT BLU WIRE LT BLU/BLK WIRE ON ACCUMULATOR) ORG/ WIRE PNK WIRE PPL PPL SUPPLY GND BATTERY SPEED CTRL GND RED WIRE RED/BLK WIRE RIGHT COOLING FAN MOTOR RIGHT STRUT TOWER) SIDE OF DASH, IN HVAC MODULE) SUNLOAD SENSOR ASSEMBLY (TOP CENTER OF DASH) TAN WIRE UNDERHOOD FUSE BLOCK (MOUNTED TO UPPER LEFT AIR TEMPERATURE SENSOR (CENTER OF DASH, IN LEFT VENTILATION DUCT) UPPER RIGHT AIR TEMPERATURE SENSOR (CENTER OF DASH, IN RIGHT VENTILATION DUCT) WHT WIRE YEL WIRE