Buick LaCrosse II (2009-2013) instrument panel multi-function switch 1 Wiring diagrams

12 24 HAZ SW LEFT TURN SIG HAZ SW RIGHT TURN SIG PPL 22 17 4 19 HEADLAMP SW PARK LP SIG HAZ LED DIMMING SIG B+ BRK APPLY SENS LO REF BLK WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN WIRE CENTER HIGH MOUNTED STOP LAMP COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/VIO WIRE DK BLU/WHT WIRE DK GRN WIRE FUSE GRN WIRE GRN/YEL WIRE GRY WIRE GRY/BRN WIRE GRY/YEL WIRE HAZARD SWITCH HEAD PARK AUTO HEADLAMP SWITCH HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) INSTRUMENT PANEL MULTI-FUNCTION SWITCH 1 LEFT FRONT SIDE MARKER LAMP LEFT LICENSE PLATE LAMP LEFT PARK/ TURN SIGNAL LAMP LEFT REAR TURN SIGNAL LAMP LEFT TAIL LAMP LEFT TAIL/ STOP LAMP LEFT REAR SIDE MARKER LAMP LT BLU WIRE LT GRN WIRE LT GRN/RED WIRE LT GRN/VIO WIRE LT GRN/WHT WIRE OFF PPL RED WIRE RED/ LT BLU WIRE RED/BRN WIRE RED/DK GRN WIRE RED/LT GRN WIRE RED/WHT WIRE RIGHT LICENSE PLATE LAMP VIO/GRY WIRE W/ HID W/O HID WHT WIRE WHT/ DK BLU WIRE WHT/YEL WIRE

18 12 RR STATUS SIG LR STATUS SIG 25 27 16 RCDLR POWER RCDLR DATA TRANSMIT RCDLR GROUND 3 4 19 15 POS VOLT POS VOLT LOCK SIG UNLOCK SIG 4 1 UNLOCK CTRL LOCK CTRL 2 4 6 NETWORK BUS 3 AJAR SW SIG AJAR SW SIG 1 AMBIENT LIGHT/ SUNLOAD SENSOR (CENTER OF DASH) BLK WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN WIRE BRN/LT GRN WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/VIO WIRE DK BLU/WHT WIRE DRIVER DOOR LATCH ASSEMBLY DRIVER WINDOW MOTOR (DRIVER'S DOOR) DRIVER WINDOW SWITCH FUSE GRN WIRE GRN/GRY WIRE GRN/YEL WIRE GRY WIRE GRY/LT GRN WIRE GRY/WHT WIRE HOOD AJAR SW SIG HOOD AJAR SWITCH (FRONT OF ENGINE COMPT) HOT AT ALL TIMES HVAC CONTROL MODULE INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) FUSE INSTRUMENT PANEL MULTI-FUNCTION SWITCH 1 LOCK CTRL 2 LOCK RELAY CTRL NETWORK BUS 3 NETWORK BUS 4 PASSENGER DOOR LATCH ASSEMBLY PPL RCDLR DATA RECEIVE RED WIRE RED/VIO WIRE SECURITY IND CTRL STATUS CTRL UNLOCK SIG VIO/GRY WIRE VIO/YEL WIRE WHT/VIO WIRE YEL WIRE YEL/LT GRN WIRE

ACCESSORY VOLTAGE AJAR SW SIG AMBIENT LIGHT/ SUNLOAD SENSOR (CENTER OF DASH) BATT POS VOLT BLK WIRE BODY CONTROL MODULE (BCM) (LEFT SIDE OF DASH) BRN WIRE BRN/LT GRN WIRE BRN/VIO WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DR LK CTRL DRV DR LK SW LK SIG DRV DR LK SW UNLK SIG DRV DR LK UNLK CTRL FUSE GRN/GRY WIRE GRN/YEL WIRE GRY WIRE HDLP HI BEAM RLY CTRL HEADLIGHTS SYSTEM HOOD AJAR SW SIG HOOD AJAR SWITCH (FRONT OF ENGINE COMPT) HORN RLY CTRL HORNS SYSTEM HOT AT ALL TIMES HVAC CONTROL MODULE INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) INSTRUMENT PANEL MULTI-FUNCTION SWITCH 1 LK MTR STATUS SIG LR LK MTR STATUS SIG RR NETWORK BUS 4 POS VOLT PPL RED/WHT WIRE RIGHT REAR WINDOW SWITCH RUN/CRANK IGN 1 VOLT SECURITY IND CTRL UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) VIO/BLK WIRE VIO/DK BLU WIRE VIO/GRY WIRE VIO/YEL WIRE WHT WIRE YEL WIRE YEL/BLK WIRE

ACCESSORY DC/AC POWER INVERTER MODULE BLK WIRE BREAKOUT TO ELECTRONIC BRAKE CONTROL MODULE) CENTER CONSOLE 1 ACCESSORY POWER RECEPTACLE CENTER CONSOLE 2 ACCESSORY POWER RECEPTACLE CENTER CONSOLE COMPARTMENT LAMP DATA LINK CONNECTOR ELECTRONIC BRAKE CONTROL MODULE FUEL PUMP CONTROL MODULE HORN SWITCH INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE INSTRUMENT PANEL COMPARTMENT LAMP INSTRUMENT PANEL MULTI-FUNCTION SWITCH 1 INSTRUMENT PANEL MULTI-FUNCTION SWITCH 2 LEFT CENTER CONSOLE ARMREST ACCENT LAMP LEFT CENTER CONSOLE CUP HOLDER ACCENT LAMP LEFT INSTRUMENT PANEL ACCENT LAMP LEFT INSTRUMENT PANEL COURTESY LAMP LEFT STEERING WHEEL CONTROLS SWITCH NCA WIRE PARK BRAKE CONTROL SWITCH PARK POSITION SWITCH PASSENGER INSTRUMENT PANEL AIR BAG PNK WIRE RIGHT CENTER CONSOLE ARMREST ACCENT LAMP RIGHT CENTER CONSOLE CUP HOLDER ACCENT LAMP RIGHT COOLING FAN MOTOR RIGHT INSTRUMENT PANEL ACCENT LAMP RIGHT INSTRUMENT PANEL COURTESY LAMP RIGHT LOWER INSTRUMENT PANEL ACCENT LAMP RIGHT REAR RIGHT REAR SIDE MARKER TURN SIGNAL LAMP LAMP RIGHT REAR WINDOW DEFOGGER NOISE FILTER RIGHT STEERING WHEEL CONTROLS SWITCH RIGHT TAIL LAMP RIGHT TAIL/ RIGHT STOP, TURN BACKUP SIGNAL LAMP LAMP STEERING WHEEL AIR BAG COIL STEERING WHEEL HEATER STEERING WHEEL HEATER CONTROL MODULE TRANSMISSION MANUAL SHIFT SWITCH TRANSMISSION SHIFT LEVER TRANSMISSION SHIFT LOCK CONTROL SOLENOID ACTUATOR W/ HEATED STEERING WHEEL SWITCH

22 1 SERIAL DATA BATT POS VOLT AIR BAG COIL AUTO BLK WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL, SOUND SYSTEMS DIMMER SWITCH DOME/ READING LAMPS FOG LAMP SWITCH FRONT DOME/ READING LAMPS FUSE GARAGE DOOR OPENER GRN WIRE HDLP SW PARK LP SIG HEAD HEADLAMP SWITCH HEADUP DISPLAY SWITCH (IF EQUIPPED) HORN SWITCH HOT AT ALL TIMES IGNITION MODE SWITCH INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) INSTRUMENT PANEL MULTI-FUNCTION SWITCH 1 INSTRUMENT PANEL MULTI-FUNCTION SWITCH 2 LED BACK LEFT STEERING WHEEL CONTROLS SWITCH LIGHT CTRL SW REF LIGHT CTRL SW SIG LIGHT DIMMING CONTROL LT GRN WIRE OFF OUTSIDE REARVIEW MIRROR SWITCH PARK PARK BRAKE CONTROL SWITCH (ON PARK BRAKE ASSEMBLY) PASSENGER WINDOW SWITCH PNK WIRE RED/WHT WIRE RIGHT STEERING WHEEL CONTROLS SWITCH SERIAL DATA LOGIC STEERING WHEEL) SUNROOF SUNSHADE SWITCH SUNROOF SWITCH WHT WIRE YEL WIRE

18 12 RR STATUS SIG LR STATUS SIG 25 27 16 RCDLR POWER RCDLR DATA TRANSMIT RCDLR GROUND 3 4 19 15 POS VOLT POS VOLT LOCK SIG UNLOCK SIG 4 1 UNLOCK CTRL LOCK CTRL 2 4 6 NETWORK BUS 3 AJAR SW SIG AJAR SW SIG 1 AMBIENT LIGHT/ SUNLOAD SENSOR (CENTER OF DASH) BLK WIRE BODY CONTROL MODULE (LEFT SIDE OF DASH) BRN WIRE BRN/LT GRN WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/VIO WIRE DK BLU/WHT WIRE DRIVER DOOR LATCH ASSEMBLY DRIVER WINDOW MOTOR (DRIVER'S DOOR) DRIVER WINDOW SWITCH FUSE GRN WIRE GRN/GRY WIRE GRN/YEL WIRE GRY WIRE GRY/LT GRN WIRE GRY/WHT WIRE HOOD AJAR SW SIG HOOD AJAR SWITCH (FRONT OF ENGINE COMPT) HOT AT ALL TIMES HVAC CONTROL MODULE INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) FUSE INSTRUMENT PANEL MULTI-FUNCTION SWITCH 1 LOCK CTRL 2 LOCK RELAY CTRL NETWORK BUS 3 NETWORK BUS 4 PASSENGER DOOR LATCH ASSEMBLY PPL RCDLR DATA RECEIVE RED WIRE RED/VIO WIRE SECURITY IND CTRL STATUS CTRL UNLOCK SIG VIO/GRY WIRE VIO/YEL WIRE WHT/VIO WIRE YEL WIRE YEL/LT GRN WIRE

ACCESSORY VOLTAGE AJAR SW SIG AMBIENT LIGHT/ SUNLOAD SENSOR (CENTER OF DASH) BATT POS VOLT BLK WIRE BODY CONTROL MODULE (BCM) (LEFT SIDE OF DASH) BRN WIRE BRN/LT GRN WIRE BRN/VIO WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DR LK CTRL DRV DR LK SW LK SIG DRV DR LK SW UNLK SIG DRV DR LK UNLK CTRL FUSE GRN/GRY WIRE GRN/YEL WIRE GRY WIRE HDLP HI BEAM RLY CTRL HEADLIGHTS SYSTEM HOOD AJAR SW SIG HOOD AJAR SWITCH (FRONT OF ENGINE COMPT) HORN RLY CTRL HORNS SYSTEM HOT AT ALL TIMES HVAC CONTROL MODULE INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) INSTRUMENT PANEL MULTI-FUNCTION SWITCH 1 LK MTR STATUS SIG LR LK MTR STATUS SIG RR NETWORK BUS 4 POS VOLT PPL RED/WHT WIRE RIGHT REAR WINDOW SWITCH RUN/CRANK IGN 1 VOLT SECURITY IND CTRL UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) VIO/BLK WIRE VIO/DK BLU WIRE VIO/GRY WIRE VIO/YEL WIRE WHT WIRE YEL WIRE YEL/BLK WIRE

AIR BAG IND AIR BAG ON IND SEAT BELT ON IND BEN/ORG WIRE BETWEEN FOLLOWING PINS: 1-2, 3-4, 5-6, 7-8) BLK WIRE BLK/OEG WIRE BLK/ORG WIRE BRN WIRE BRN/ORG WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE FUSE GRN WIRE GRY WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/ORG WIRE HOT AT ALL TIMES HOT IN ON OR START IGN 1 VOLT INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (BELOW CENTER CONSOLE) INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK (LOWER LEFT SIDE OF DASH) INSTRUMENT PANEL MULTI-FUNCTION SWITCH 1 LEFT FRONT IMPACT SENSOR (LEFT SIDE OF CROSSMEMBER) LO SPD GMLAN LOGIC LOW SPD GMLAN SERIAL DATA LOW SPEED GMLAN SERIAL DATA NCA WIRE ORG/ WIRE ORG/LT GRN WIRE ORG/VIO WIRE ORG/WHT WIRE ORG/YEL WIRE PASS AIR BAG ON IND PASS AIR BAG OFF IND PASSENGER AIR BAG OFF IND PASSENGER INSTRUMENT PANEL AIR BAG PASSENGER PRESENCE DETECTION MODULE (IF EQUIPPED) (UNDER FRONT PASSENGER'S SEAT) PNK WIRE RED WIRE RED/WHT WIRE RIGHT FRONT IMPACT SENSOR (RIGHT SIDE OF CROSSMEMBER) SEAT BELT IND SHORTING BAR STEERING WHEEL AIR BAG STEERING WHEEL AIR BAG COIL TAN WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF BATTERY) VIO WIRE VIO/WHT WIRE WHT WIRE WHT/ORG WIRE YEL WIRE YEL/BRN WIRE YEL/ORG WIRE