Buick LaCrosse I (2004-2009) inflatable restraint steering wheel module coil (in steering column) Wiring diagrams

10 59 STOP SWITCH SIG SET/COAST RESUME/ ACCELERATE SIGNAL 10 VOLT REF 5 VOLT REFERENCE 1 PPL LOW REFERENCE 5 VOLT REFERENCE 2 LOW REFERENCE APP SENSOR 2 SIGNAL 55 54 15 8 31 39 TP SENS 1 SIG ACCELERATOR PEDAL POSITION (APP) SENSOR (ABOVE ACCELERATOR PEDAL) BAT POS VOL BCM CLASS 2 DATA BLK WIRE BLU WIRE BODY CONTROL MODULE (BCM) (BEHIND LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) BRN WIRE CLSTR FUSE COMPUTER DATA LINES SYSTEM CRUISE CAN SW SIG CRUISE FUSE CRUISE INDICATOR CRUISE SET XX MPH CRUISE SWITCH DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ENGINE CONTROL MODULE (ECM) (TOP OF ENGINE) GROUND DISTRIBUTION SYSTEM GRY WIRE HOT AT ALL TIMES HOT IN RUN OR START I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) IGN INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL (IN STEERING COLUMN) INSTRUMENT PANEL CLUSTER (IPC) IPC CLASS 2 SER DATA LEFT STEERING WHEEL CONTROLS LOGIC LOW REF LT BLU WIRE LT GRN WIRE MESSAGE MESSAGE CENTER (UP LEVEL) NCA WIRE ON IND. ORG/ WIRE PCM CLASS 2 SER DATA PNK WIRE PPL REAR OBJECT SENSOR CONTROL MODULE RES+ SET- STOP LAMP SIG STOP SWITCH SIG TAC MTR CTRL 2 TP SENS 2 SIG TAC MTR CTRL 1 LOW REF PPL TAN WIRE THROTTLE ACTUATOR CONTROL (TAC) MODULE (AT THROTTLE BODY) TRANSMISSION CONTROL MODULE (TCM) UNDERHOOD FUSE BLOCK (MOUNTED TO RIGHT STRUT TOWER) VEH SPD SIG VEHICLE SPEED SENSOR (VSS) VSS HIGH SIG VSS LOW SIG WHT WIRE WHT/BLK WIRE YEL WIRE

10 VOLT REF 32 22 44 STOP SWITCH SIG VEHICLE SPEED SIGNAL 5 VOLT REF ACCELERATOR PEDAL POSITION (APP) SENSOR (ABOVE ACCELERATOR PEDAL) APP SENS 1 SIG APP SENS 2 SIG BAT POS VOL BLK WIRE BLU WIRE BODY CONTROL MODULE (BCM) (BEHIND LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) BRN WIRE CLSTR FUSE COMPUTER DATA LINES SYSTEM CRUISE CAN SW SIG CRUISE FUSE CRUISE INDICATOR CRUISE SET XX MPH DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE GROUND DISTRIBUTION SYSTEM GRY WIRE HOT AT ALL TIMES HOT IN RUN OR START I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) IGN INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL (IN STEERING COLUMN) INSTRUMENT PANEL CLUSTER (IPC) IPC CLASS 2 SER DATA LEFT STEERING WHEEL CONTROLS LOGIC LOW REF LT BLU WIRE LT GRN WIRE MESSAGE MESSAGE CENTER (UP LEVEL) NCA WIRE ON IND. ORG/ WIRE ORG/BLK WIRE PCM CLASS 2 SER DATA PNK WIRE POWERTRAIN CONTROL MODULE (LEFT SIDE OF ENGINE COMPT, NEAR AIR CLEANER ASSEMBLY) PPL PPL LOW REF REAR OBJECT SENSOR CONTROL MODULE RES+ SER DATA PRIMARY SER DATA SECONDARY SET CRUISE SWITCH SET/COAST RESUME/ ACCELERATE SIGNAL STOP LAMP SIG STOP LAMP SW SIG STOP SWITCH SIG BCM CLASS 2 DATA LOW REF TAN WIRE THROTTLE ACTUATOR CONTROL (TAC) MODULE (AT THROTTLE BODY) UNDERHOOD FUSE BLOCK (MOUNTED TO RIGHT STRUT TOWER) VEH SPD SIG VEHICLE SPEED SENSOR (VSS) VEHICLE SPEED SIGNAL VSS HIGH SIGNAL VSS LOW SIGNAL WHT WIRE WHT/BLK WIRE YEL WIRE

BLK WIRE BODY CONTROL MODULE (BCM) (BEHIND LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) DK GRN WIRE GROUND DISTRIBUTION SYSTEM HORN ASSEMBLY (RIGHT FRONT OF VEHICLE) HORN FUSE 11 HORN RELAY 39 HORN RLY CTRL HORN SWITCH HOT AT ALL TIMES INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL (IN STEERING COLUMN) NCA WIRE STEERING WHEEL) TAN WIRE UNDERHOOD FUSE BLOCK (MOUNTED TO RIGHT STRUT TOWER)

AUTO OFF AUTOMATIC A/C MANUAL A/C BATTERY CURRENT SENSOR (NEAR BATTERY) BLK WIRE BLK/WHT WIRE BLU WIRE BODY CONTROL MODULE (BCM) (BELOW LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DRIVER DOOR LOCK SWITCH DRIVER INFORMATION CENTER (DIC) DRIVER WINDOW SWITCH FRONT PASSENGER DOOR LOCK SWITCH FRONT PASSENGER WINDOW SWITCH GROUND GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/BLK WIRE HEAD HOT AT ALL TIMES HVAC CONTROL MODULE (CENTER OF DASH) I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) I/P LAMP SUPPLY VOLTAGE ILLUM INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL (IN STEERING COLUMN) INSTRUMENT PANEL CLUSTER (IPC) INT/ ILLUM FUSE LAMP SWITCH ASSEMBLY LEFT STEERING WHEEL CONTROLS (W/ ACCESSORY STEERING WHEEL CONTROL) LT GRN WIRE NCA WIRE ORG/ WIRE OUTSIDE REARVIEW MIRROR SWITCH PARK PARK LAMP SW ON SIG PNK WIRE PRNDL LAMP (CONSOLE SHIFT) RADIO RED/WHT WIRE RIGHT STEERING WHEEL CONTROLS (W/ ACCESSORY STEERING WHEEL CONTROL) STR/WHL/ ILLUM FUSE SUPPLY

1 2 3 4 5 6 7 8 BATTERY GROUND F CENTER OUT (+) F CENTER OUT (-) 1 2 8 L AUDIO SIG AUDIO COMMON SIG DRAIN WIRE 1-6 AMPLIFIER CTRL ANTENNA GRID (CENTER REAR OF ROOF) ANTENNA MODULE AUDIO AMPLIFIER (CENTER OF REAR COMPT) BAND BARE BLK WIRE BLK/WHT WIRE BLU WIRE BLUNT CUT) BRN WIRE BRN/WHT WIRE CENTER OF REAR WINDOW PANEL, APPROXIMATELY 90 CM FROM BREAKOUT TO REAR COMPT CENTER SPEAKER CLASS 2 SERIAL DATA COAX 1 ANTENNA SIG RADIO ON SIG ANTENNA SIG PPL COAX COAX ANTENNA SIG COMPUTER DATA LINES SYSTEM COURTESY LAMP DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DK LT LT DK GRN WIRE GROUND DISTRIBUTION SYSTEM GRY WIRE HOT AT ALL TIMES I/P FUSE BLOCK (BEHIND RIGHT INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL (IN STEERING COLUMN) LEFT FRONT DOOR SPEAKER LEFT FRONT TWEETER SPEAKER LT BLU WIRE LT DK LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PPL PPL ON SIG I/P LMP VLT GROUND 8 1450 INTERIOR LIGHTS SYSTEM PPL PPL R AUDIO SIG (+) L AUDIO SIG (+) AUDIO COMMON AUDIO COMMON SIG L AUDIO SIG RADIO RDO AMP FUSE REAR SUB OUT (-) REAR SUB OUT (+) REAR WINDOW RF SPKR OUT (+) RF SPKR OUT (-) LF SPKR OUT (-) LF SPKR OUT (+) RIGHT RIGHT FRONT FRONT DOOR TWEETER SPEAKER SPEAKER RIGHT STEERING WHEEL CONTROLS SATELLITE RADIO CIRCUIT SEEK DOWN SEEK UP SIDE OF DASH) SUB- MID SUB- MID WOOFER RANGE WOOFER RANGE RIGHT REAR LEFT REAR SPEAKER SPEAKER TAN WIRE VOL DOWN VOL UP WHT WIRE YEL WIRE

1 2 8 L AUDIO SIG AUDIO COMMON SIG DRAIN WIRE BAND BARE BLK/WHT WIRE BLU WIRE BLUNT CUT) BRN WIRE BRN/WHT WIRE CLASS 2 SERIAL DATA COAX ANTENNA SIG COAX PPL COAX ANTENNA SIG RADIO ON SIG ANTENNA SIG COMPUTER DATA LINES SYSTEM DK 1-6 DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DK LT GRID (CENTER REAR OF ROOF) GRN WIRE GRY WIRE HOT AT ALL TIMES I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL (IN STEERING COLUMN) LEFT FRONT DOOR SPEAKER LEFT FRONT TWEETER SPEAKER LT BLU WIRE LT GRN WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PPL PPL ON SIG PPL PPL R AUDIO SIG (+) L AUDIO SIG (+) AUDIO COMMON AUDIO COMMON SIG L AUDIO SIG RADIO RADIO AMP FUSE REAR WINDOW ANTENNA RIGHT FRONT RIGHT FRONT LEFT REAR TWEETER DOOR SPEAKER SPEAKER SPEAKER RIGHT REAR SPEAKER RIGHT STEERING WHEEL CONTROLS SATELLITE RADIO CIRCUIT SEEK DOWN SEEK UP TAN WIRE VOL DOWN VOL UP YEL WIRE

BLK/WHT WIRE BRN WIRE CASE GROUND DK BLU WIRE DK GRN WIRE EARLY PRODUCTION GRY WIRE INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (SDM) (UNDER RIGHT FRONT SEAT) INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL (IN STEERING COLUMN) LATE PRODUCTION LEFT INFLATABLE RESTRAINT FRONT END SENSOR LEFT INFLATABLE RESTRAINT ROOF RAIL MODULE (MOUNTED ON LEFT "C" PILLAR) LEFT INFLATABLE RESTRAINT SIDE IMPACT SENSOR (IN LOWER CENTER OF DRIVER'S DOOR) LT GRN WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK OCCUPANT DATA LINK L SEAT BELT SW WIRE PNK WIRE PPL R SEAT BELT SW RED WIRE RIGHT INFLATABLE RESTRAINT FRONT END SENSOR (RIGHT FRONT OF ENGINE COMPT) RIGHT INFLATABLE RESTRAINT ROOF RAIL MODULE (MOUNTED ON RIGHT "C" PILLAR) SHORTING BAR STAGE 1 STAGE 2 TAN WIRE W/ SIDE IMPACT WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE