Cadillac STS I facelift (2007-2011) (in passenger compt, to left of driver seat, on left frame rail) Wiring diagrams

15 16 SERIAL DATA - SERIAL DATA + 17 27 26 BRK APPLY SENS LOW REF BRK APPLY SENS SPLY VOLT TRACTION CTRL SW SIG 2 BLK WIRE BLK/WHT WIRE BLU WIRE BRAKE PEDAL POSITION SENSOR (ATTACHED TO TOP OF BRAKE PEDAL ASSEMBLY) BRK APPLY SENS SIG BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK GRN WIRE GRN WIRE GRY WIRE GRY/BLK WIRE INSTRUMENT PANEL MODULE (IPM) LEFT FRONT WHEEL SPEED SENSOR (WSS) (BEHIND LEFT FRONT BRAKE ROTOR) LEFT REAR WHEEL SPEED SENSOR (WSS) (BEHIND LEFT REAR BRAKE ROTOR) LT BLU WIRE LT GRN/BLK WIRE ORG/ WIRE PARK BRAKE SWITCH PARK BRAKE SWITCH (AT BASE OF BRAKE PEDAL) RIGHT FRONT WHEEL SPEED SENSOR (WSS) (BEHIND RIGHT FRONT BRAKE ROTOR) RIGHT REAR WHEEL SPEED SENSOR (WSS) (BEHIND RIGHT REAR BRAKE ROTOR) TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRACTION CONTROL SWITCH (TCS) WHT WIRE YAW RATE, LATERAL ACCELERATION SENSOR (UNDER THE FRONT PASSENGER SEAT) YEL WIRE

ABS IND. BLK WIRE BLK/WHT WIRE BRAKE FLUID LEVEL SWITCH (IN MASTER CYLINDER RESERVOIR) BRAKE IND BRN WIRE CAN BUS CAN BUS HIGH LOW CAN BUS IGN CAN BUS HIGH LOW COMPUTER DATA LINES SYSTEM DK GRN WIRE DRIVER INFORMATION CENTER (DIC) DISPLAY GRN WIRE HOT AT ALL TIMES HOT W/ RUN RELAY ENERGIZED IGN INSTRUMENT PANEL CLUSTER (IPC) J/C LEFT FRONT WHEEL SPEED SENSOR (WSS) (BEHIND LEFT FRONT BRAKE ROTOR) LEFT REAR FUSE BLOCK (UNDER LEFT SIDE OF REAR SEAT) LEFT REAR WHEEL SPEED SENSOR (WSS) (BEHIND LEFT REAR BRAKE ROTOR) LOGIC LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE PNK 4 3 2 1 IGN 1 VOLT CAN BUS HIGH CAN BUS LOW GND WIRE PNK 9 10 WIRE PNK LT WIRE PNK PNK WIRE PNK WIRE POWER STEERING CONTROL MODULE (PSCM) (LEFT SIDE OF DASH, ABOVE PARK BRAKE PEDAL) PPL RED/WHT WIRE RIGHT FRONT WHEEL SPEED SENSOR (WSS) (BEHIND RIGHT FRONT BRAKE ROTOR) RIGHT REAR WHEEL SPEED SENSOR (WSS) (BEHIND RIGHT REAR BRAKE ROTOR) RIM/RPA/ISRVM/CLM FUSE SERIAL DATA TAN WIRE TAN/WHT WIRE TRACTION OFF IND TV/VICS/ AFS/SCM FUSE WHT WIRE YAW, LATERAL ACCELEROMETER SENSOR YEL WIRE

1 11 PWM DATA PWM DATA BLK WIRE BLU WIRE BRN WIRE CLIMATE CONTROL SEAT MODULE (UNDER RIGHT FRONT SEAT) DK BLU WIRE DRIVER BACK HEATED SEAT ELEMENT (IN DRIVER SEAT BACK) DRIVER BACK VENTILATED SEAT BLOWER MOTOR (IN DRIVER SEAT BACK) DRIVER CUSHION HEATED SEAT ELEMENT (IN DRIVER SEAT CUSHION) DRIVER CUSHION VENTILATED SEAT BLOWER MOTOR (IN DRIVER SEAT CUSHION) GRN WIRE GRY WIRE HOT AT ALL TIMES IGN 3 FUSE IGN 3 VOLT INSTRUMENT PANEL MODULE (IPM) (RIGHT SIDE OF DASH, BEHIND GLOVE BOX) J/C LEFT REAR FUSE BLOCK (UNDER LEFT SIDE OF REAR SEAT) LT BLU WIRE MEMORY SEAT MODULE (MSM) (W/ MEMORY) (UNDER DRIVER SEAT) MSM FUSE ORG/ WIRE PASSENGER BACK HEATED SEAT ELEMENT (IN PASSENGER SEAT BACK) PASSENGER BACK VENTILATED SEAT BLOWER MOTOR (IN PASSENGER SEAT BACK) PASSENGER CUSHION HEATED SEAT ELEMENT (IN PASSENGER SEAT CUSHION) PASSENGER CUSHION VENTILATED SEAT BLOWER MOTOR (IN PASSENGER SEAT CUSHION) PNK WIRE RED WIRE RED/WHT WIRE RELAY RF HTD/ SEAT/XM FUSE RIGHT REAR FUSE BLOCK (UNDER RIGHT SIDE OF REAR SEAT) RUN WIRE SPLY VLTG SPLY VOLT BATT POS VOLT WHT WIRE YEL WIRE YEL/BLK WIRE

1 11 PWM DATA PWM DATA BLK WIRE BLU WIRE BRN WIRE CLIMATE CONTROL SEAT MODULE (UNDER RIGHT FRONT SEAT) DK BLU WIRE DRIVER BACK HEATED SEAT ELEMENT (IN DRIVER SEAT BACK) DRIVER CUSHION HEATED SEAT ELEMENT (IN DRIVER SEAT CUSHION) GRN WIRE GRY WIRE HOT AT ALL TIMES IGN 3 FUSE IGN 3 VOLT J/C LEFT REAR FUSE BLOCK (UNDER LEFT SIDE OF REAR SEAT) MEMORY SEAT MODULE (MSM) (W/ MEMORY) (UNDER DRIVER SEAT) NTC SIG NTC SIG ORG/ WIRE PASSENGER BACK HEATED SEAT ELEMENT (IN PASSENGER SEAT BACK) PASSENGER CUSHION HEATED SEAT ELEMENT (IN PASSENGER SEAT CUSHION) PNK LOW REF GROUND PWM DATA PWM DATA WIRE PNK WIRE RED WIRE RED/WHT WIRE RELAY RF HTD/ SEAT/XM FUSE RIGHT REAR FUSE BLOCK (UNDER RIGHT SIDE OF REAR SEAT) RUN WIRE SPLY VOLT SPLY VOLT BATT POS VOLT WHT WIRE YEL WIRE YEL/BLK WIRE

AUTOMATIC TRANSMISSION SHIFT LEVER BLK WIRE BLK/WHT WIRE BLOWER MOTOR CONTROL MODULE CENTER CONSOLE COMPARTMENT ACCESSORY POWER OUTLET DRIVER BACK DRIVER VENTILATED BACK SEAT HEATED BLOWER SEAT MOTOR ELEMENT DRIVER CUSHION DRIVER VENTILATED SEAT SEAT ADJUSTER BLOWER SWITCH MOTOR DRIVER CUSHION HEATED SEAT ELEMENT DRIVER SEAT BELT SWITCH HVAC CONTROL MODULE I/P COMPARTMENT LAMP SWITCH IGNITION MODE SWITCH INSTRUMENT PANEL MODULE (IPM) MEMORY SEAT MODULE (MSM) NCA WIRE PASSENGER BACK VENTILATED SEAT BLOWER MOTOR PASSENGER CLIMATE SEAT CONTROL ADJUSTER SEAT SWITCH MODULE PASSENGER DOOR CONTROL MODULE PASSENGER DOOR HANDLE PASSENGER DOOR LATCH PASSENGER DOOR LOCK SWITCH PASSENGER SEAT BELT SWITCH PASSENGER SEAT LUMBAR SWITCH PASSENGER WINDOW SWITCH RIGHT PASSENGER REAR WINDOW WINDOW MOTOR MOTOR RIGHT REAR DOOR CONTROL MODULE RIGHT REAR DOOR LOCK RIGHT REAR WINDOW SWITCH TRACTION CONTROL W/ ACTIVE BRAKE CONTROL W/ CIGAR LIGHTER ASHTRAY W/ FRONT SEAT HEATER W/O ACTIVE BRAKE CONTROL W/O CIGAR LIGHTER ASHTRAY W/O FRONT SEAT HEATER W/O POWER LUMBAR SEATS WHT WIRE YAW, LATERAL ACCELEROMETER SENSOR

BATTERY POSITIVE VOLTAGE BLK WIRE BLK/WHT WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DRIVER SEAT ADJUSTER SWITCH FOR- WARD DOWN FRONT VERTICAL DOWN FRT VERT UP SW SIG FRT VERT DN SW SIG DRV ST LUMBAR UP SW SIG GND BAT POS VOLTAGE GRY WIRE HORIZONTAL FORWARD HORIZONTAL REARWARD RECLINE FORWARD HOT AT ALL TIMES LEFT REAR FUSE BLOCK (UNDER LEFT SIDE OF REAR SEAT) LT BLU WIRE LT GRN WIRE MEMORY POWER TILT, POWER TELESCOPIC CIRCUIT MEMORY SEAT MODULE (UNDER DRIVER SEAT) MSM FUSE ORG/ WIRE ORG/WHT WIRE PNK DRV PWR SEAT LUMBAR MTR RWD CTRL WIRE PNK WIRE PWR SEATS CIRCUIT BREAKER REAR VERTICAL DOWN REAR VERTICAL UP FRONT VERTICAL UP REAR- WARD RECLINE REARWARD RED/WHT WIRE STEERING COLUMN TELE MTR FWD DRV PWR SEAT FRT VERT MTR DN CTRL STEERING COLUMN TILT MTR SIG MEM SEAT/MIRROR SENS LOW REF GND TAN WIRE W/ FRONT HEATED SEATS WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

BLK WIRE BLU WIRE DOWN HORIZONTAL HOT AT ALL TIMES LEFT REAR FUSE BLOCK (UNDER LEFT SIDE OF REAR SEAT) LT GRN WIRE ORG/ WIRE PASSENGER SEAT LUMBAR MOTOR PASSENGER SEAT LUMBAR SWITCH PNK WIRE PPL PWR SEATS CIRCUIT BREAKER RED WIRE RED/WHT WIRE RWD VERTICAL WHT WIRE

BLK WIRE BLU WIRE DOWN FRONT VERTICAL DOWN FRONT VERTICAL UP GRN WIRE HORIZONTAL FORWARD HORIZONTAL REARWARD HOT AT ALL TIMES LEFT REAR FUSE BLOCK (UNDER LEFT SIDE OF REAR SEAT) NCA WIRE PASSENGER SEAT ADJUSTER MOTOR ASSEMBLY (UNDER PASSENGER SEAT CUSHION) PASSENGER SEAT ADJUSTER SWITCH PASSENGER SEAT FRONT VERTICAL MOTOR PASSENGER SEAT HORIZONTAL MOTOR PASSENGER SEAT REAR VERTICAL MOTOR PWR SEATS CIRCUIT BREAKER REAR REAR VERTICAL DOWN REAR VERTICAL UP RECLINE FORWARD RECLINE REARWARD RED/WHT WIRE TAN WIRE YEL WIRE

AIR BAG (BATT) FUSE AIR BAG/ IGN BLK WIRE BLK/WHT WIRE BRN WIRE CASE GROUND CLASS 2 (SDM) IGN DK GRN WIRE DRIVER SEAT BELT BUCKLE DRIVER SEAT BELT RETRACTOR (LEFT "B" PILLAR) DRIVER SEAT BELT SWITCH FUSE GMLAN SERIAL DATA GROMMET) HOT AT ALL TIMES HOT W/ RUN RELAY ENERGIZED HOT W/ RUN/CRNK RELAY ENERGIZED IGN 3 FUSE INSTRUMENT PANEL CLUSTER (IPC) J/C LEFT REAR FUSE BLOCK (UNDER LEFT SIDE OF REAR SEAT) LOGIC NCA WIRE PASSENGER SEAT BELT BUCKLE PASSENGER SEAT BELT RETRACTOR (RIGHT "B" PILLAR) PASSENGER SEAT BELT SWITCH PNK WIRE PPL RED/WHT WIRE RIGHT REAR FUSE BLOCK (UNDER RIGHT SIDE OF REAR SEAT) SEAT BELT IND TAN/WHT WIRE

BLK WIRE BLK/WHT WIRE BRN WIRE DK GRN WIRE DK GRN/WHT WIRE GMLAN (SDM) GMLAN (SDM) IGN GMLAN PASS SERIAL SEAT DATA BELT IND GROMMET) GRY WIRE HOT W/ RUN RELAY ENERGIZED IGN 3 FUSE INFLATABLE RESTRAINT STEERING WHEEL MODULE (ON STEERING WHEEL) INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL INSTRUMENT PANEL CLUSTER (IPC) J/C LEFT REAR FUSE BLOCK (UNDER LEFT SIDE OF REAR SEAT) LOGIC NCA WIRE ORG/ WIRE PASSENGER DOOR CONTROL MODULE (INSIDE PASSENGER'S DOOR) PNK PNK PNK 2 1 10 WIRE PNK WIRE PPL PPL PNK WIRE PPL/WHT WIRE RIGHT FRONT SEAT BELT SWITCH RIGHT FRONT SEAT BELT SWITCH (IN RIGHT FRONT SEAT BELT BUCKLE) RIGHT REAR DOOR CONTROL MODULE (INSIDE RIGHT REAR DOOR) SEAT BELT IND AIR BAG IND SHORTING BAR STAGE 1 STAGE 2 TAN WIRE TAN/WHT WIRE W/ ONSTAR WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE