Cadillac STS I facelift (2007-2011) j/c Wiring diagrams

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

13 56 10 12 FUEL PUMP CTRL STARTER ENABLE 15 6 LOW SPD GMLAN DATA GROUND 2 19 PNK IGN 1 VOLT TRUNK AJAR SIG WIRE 21 22 LOW SPD GMLAN LOW SPD GMLAN 33 53 55 42 HIGH SPD GMLAN- HIGH SPD GMLAN+ 4 10 BATTERY POSITIVE VOLT GMLAN SERIAL DATA 4 5 15 16 HIGH SPD GMLAN- HIGH SPD GMLAN+ HIGH SPD GMLAN- HIGH SPD GMLAN+ 4 8 GROUND GROUND 5060 5060 COMPUTER DATA LINES SYSTEM 7 9 LOW SPD GMLAN DATA GROUND 9 14 HOOD OPEN SW SIG HOOD CLOSED SW SIG PPL BLK WIRE BLK/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DOOR OPEN SW SIG DRIVER DOOR CONTROL MODULE (INSIDE DRIVER DOOR) DRIVER DOOR LATCH (IN MIDDLE REAR OF DRIVER DOOR) ENGINE CONTROLS SYSTEM GROUND HOOD AJAR SWITCH (ON RIGHT FRONT STRUT TOWER) HORN CTRL HORNS SYSTEM HOT AT ALL TIMES HOT IN RUN OR CRANK INSTRUMENT PANEL CLUSTER (IPC) INSTRUMENT PANEL MODULE (IPM) (RIGHT SIDE OF DASH, BEHIND GLOVE BOX) J/C LEFT HEADLAMP ASSEMBLY LEFT REAR DOOR CONTROL MODULE (LRDM) (INSIDE LEFT REAR DOOR) LEFT REAR DOOR LATCH (IN MIDDLE REAR OF PASSENGER DOOR) LOGIC GMLAN SERIAL DATA LOW SPD GMLAN DATA LT GRN WIRE ORG/BLK WIRE PARK LAMP CTRL PASSENGER DOOR CONTROL MODULE (INSIDE PASSENGER'S DOOR) PASSENGER DOOR LATCH (IN MIDDLE REAR OF LEFT REAR DOOR) PNK WIRE PPL REAR COMPARTMENT LID LATCH (CENTER REAR OF REAR COMPT LID) REAR INTEGRATION MODULE (RIM) (IN LEFT SIDE OF REAR COMPT, UNDER REAR SHELF) RED/BLK WIRE REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) (UNDER REAR SPEAKER SHELF) RIGHT REAR DOOR CONTROL MODULE (RRDM) (INSIDE RIGHT REAR DOOR) RIGHT REAR DOOR LATCH (IN MIDDLE REAR OF RIGHT REAR DOOR) RIGHT REAR FUSE BLOCK (UNDER RIGHT SIDE OF REAR SEAT) RIM FUSE RIM/RPA/ ISRVM/CLM FUSE SECURITY IND STARTING/ CHARGING SYSTEM TAN WIRE TAN/BLK WIRE TRUNK DIODE WHT WIRE YEL WIRE YEL/BLK WIRE

AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION INTERNAL MODE SWITCH (IMS) BCK/UP LAMP FUSE BCK/UP LAMP RELAY BLK WIRE COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY DK GRN WIRE GRN WIRE GRY WIRE HOT AT ALL TIMES J/C LEFT BACKUP LAMP LEFT REAR FUSE BLOCK (UNDER LEFT SIDE OF REAR SEAT) LO SPD GMLAN SER DATA LT GRN WIRE REAR INTEGRATION MODULE (RIM) (IN LEFT SIDE OF REAR COMPT, UNDER REAR SHELF) RED WIRE REVERSE RLY CTRL RIGHT BACKUP LAMP TAN WIRE TAN/BLK WIRE TRANSMISSION CONTROL MODULE (TCM)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 PNK IGN WIRE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 BATT POSITIVE VOLT 1 2 GND BATT POSITIVE VOLT ACTR FRT ACTIVE SIG MTR W ACTR FRT ACTIVE SIG U GND ACTR FRT ACTIVE SIG W ACTR FRT ACTIVE SIG V ACTR FRT ACTIVE SIG GND ACTR FRT ACTIVE SIG V ACTR FRT ACTIVE SIG MTR U BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE CAN BUS HIGH SERIAL DATA CAN BUS LOW SERIAL DATA SERIAL DATA + SERIAL DATA - COMPUTER DATA LINES SYSTEM ELECTRONIC BRAKE CONTROL MODULE (EBCM) (RIGHT FRONT CORNER OF ENGINE COMPT) GRN WIRE GRN/RED WIRE GRY WIRE HOT AT ALL TIMES AFS FUSE FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPT) HOT W/ RUN RELAY ENERGIZED IGN 3 FUSE J/C LEFT REAR FUSE BLOCK (UNDER LEFT SIDE OF REAR SEAT) LT GRN WIRE LT GRN/BLK WIRE PNK WIRE POWER STEERING CONTROL MODULE (PSCM) (LEFT SIDE OF DASH, ABOVE PARK BRAKE PEDAL) RED WIRE RED/BLK WIRE RED/WHT WIRE SERIAL DATA WAKEUP STEERING ANGLE SENSOR TAN WIRE TAN/BLK WIRE TAN/WHT WIRE UNDERHOOD UPPER INTERMEDIATE STEERING SHAFT WHT WIRE YEL WIRE

BLK WIRE BRN WIRE BRN/WHT WIRE CENTER HIGH MOUNTED STOP LAMP (CHMSL) DK GRN WIRE DK GRN/WHT WIRE FROM UNDERHOOD FUSE BLOCK LIC DIM FUSE LT PARK FUSE (DIAGRAM 1 OF 2) GROUND GROUND B+ HOT AT ALL TIMES J/C LEFT FRONT MARKER LAMP LEFT FRONT PARK LAMP LEFT HEADLAMP LEFT LEFT REAR TAIL STOP/ LAMP TURN OUTAGE LAMP DETECTION SUPPLY SIGNAL VOLTAGE LEFT REAR MARKER LAMP LOGIC LEFT STOP PARK LAMP LAMP SUPPLY SUPPLY VOLTAGE VOLTAGE LEFT TAIL LAMP LOGIC LT BLU WIRE PPL PPL/ PPL/ PPL/ RIGHT FRONT MARKER LAMP RIGHT FRONT PARK LAMP RIGHT HEADLAMP RIGHT REAR MARKER LAMP RIGHT RIGHT PARK REAR LAMP STOP/ SUPPLY TURN VOLTAGE LAMP SUPPLY VOLTAGE RIGHT TAIL LAMP RIGHT TAIL LAMP OUTAGE DETECTION SIGNAL RT PARK FUSE STOP LAMP RELAY STOP LAMP SUPPLY VOLTAGE STOP LAMPS FUSE W/ GPS 1 W/ GPS 1, HID WHT WIRE YEL WIRE YEL/BLK WIRE

1 9 BATT POSITIVE VOLT BATT POSITIVE VOLT 3.6L 4.4L, 4.6L ANTENNA AUX VID BLK WIRE BLK/WHT WIRE BRN WIRE CASE GROUND CELLULAR MICROPHONE SIGNAL DRAIN WIRE 10 2 COAX ANTENNA COAX COAX RADIO ANTENNA COAX COMPUTER DATA LINES SYSTEM (IN REAR COMPT, TO REAR OF LEFT REAR SHOCK TOWER) DK GRN WIRE GRY WIRE HOT AT ALL TIMES INSIDE REARVIEW MIRROR (ISRVM) J/C NCA WIRE PNK PPL WIRE PNK VOICE RECOG SIG VOICE RECOG LOW DRAIN WIRE PNK WIRE PNK/BLK WIRE PPL RADIO RADIO ANTENNA MODULE (ABOVE CENTER RADIO REAR WINDOW ANTENNA RDO/ ONSTAR FUSE REAR OBJECT SENSOR CONTROL MODULE RED WIRE RED/WHT WIRE RH LH AUX AUX AUX DRAIN DRAIN AUD AUD HI DET WIRE WIRE SIG SIG SIG SIG RIGHT REAR FUSE BLOCK (UNDER RIGHT SIDE OF REAR SEAT) VEHICLE SPEED SIG W/ HID HEADLAMPS W/ INFOTAINMENT SYSTEM 012, 014, 015 W/ INTELLIGENT HIGH BEAM CONTROL W/ VEHICLE COMMUNICATION SYSTEM WHT WIRE YEL WIRE

ANTI-THEFT SYSTEM BATT POSITIVE VOLTAGE BLK WIRE BLK/WHT WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL SWITCH SIGNAL CRUISE CONTROL SYSTEM CRUISE CONTROL SYSTEM INTERIOR LIGHTS SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE EXTERIOR LIGHTS SYSTEM ANTI-THEFT SYSTEM EXTERIOR LIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM DEFOGGER SYSTEM POWER TOPS SYSTEM GRY WIRE HOOD OPEN SW SIG HOT AT ALL TIMES HOT W/ RUN/CRNK RELAY ENERGIZED J/C LOW SPD GMLAN SERIAL DATA LR STOP/TURN LMP SPLY VOLTAGE LT BLU WIRE LT BLU/WHT WIRE LT TRN/ LDW FUSE NAVIGATION SYSTEM ORG/BLK WIRE PNK WIRE REAR PARKING ASSIST CHIME SIG RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT REAR FUSE BLOCK (UNDER RIGHT SIDE OF REAR SEAT) RIM FUSE RIM/RPA/ ISRVM/CLM FUSE RR TURN SIG LMP SPLY VOLTAGE HOOD CLOSED SW SIG PPL RT TRN/ SBZA FUSE STEERING WHEEL CTRL SPLY VOLT COURTESY LAMP SPLY VOLTAGE TAN WIRE TRUNK AJAR SW SIG TRUNK, TAILGATE, FUEL DOORS SYSTEM WHT WIRE YEL WIRE YEL/BLK WIRE

BLK WIRE BRN WIRE CNSTR VENT FUSE DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE FUEL PUMP FUSE FUEL PUMP RELAY GRY WIRE HOT AT ALL TIMES J/C LEFT FUEL FUEL TANK PUMP SENSOR FUEL PUMP, SENDER ASSEMBLY (IN FUEL TANK) LT BLU WIRE PNK/BLK WIRE RED WIRE RED/WHT WIRE RIGHT REAR FUSE BLOCK (UNDER RIGHT SIDE OF REAR SEAT) SECONDARY FUEL LEVEL SENSOR (TOP LEFT OF FUEL TANK) TAN WIRE WHT WIRE

2501 6120 2761 COMPUTER DATA LINES SYSTEM 335 3223 COOLING FANS SYSTEM 5 VOLT REF 1 5 VOLT REF 5 VOLT REF 1 BANK 2 SENS 2 BAROMETRIC PRESSURE (BARO) SENSOR (TOP RIGHT SIDE ENGINE) BLK WIRE BLK/WHT WIRE BRN WIRE CNSTR VENT FUSE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE COOLANT TEMPERATURE (ECT) SENSOR (REAR OF RIGHT CYLINDER HEAD) EVAP CNSTR PURGE SOL CTRL LO SPD COOLING FAN RLY CTRL FUEL PUMP FUEL PUMP RELAY GENERATOR FIELD DUTY CYCLE SIG GENERATOR TURN ON SIG GROUND GRY WIRE GRY/BLK WIRE HI SPD GMLAN BUS + HI SPD GMLAN SERIAL DATA BUS - IAT 2 LOW REF LOW REF HOT AT ALL TIMES HOT AT ALL TIMES FUEL PUMP FUSE J/C LEFT FUEL TANK SENSOR LOW REF BARO SENS LOW REF LOW REF LT BLU WIRE LT GRN WIRE OIL LEVEL SW SIG ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PARK/NEUTRAL SIG PNK WIRE PPL PPL/WHT WIRE RED/WHT WIRE RIGHT REAR FUSE BLOCK (UNDER STARTING/ CHARGING SYSTEM STARTING/CHARGING SYSTEM TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRANSMISSIONS SYSTEM VACUUM BYPASS VLV CTRL HTR LO CTRL (BANK 2 SENS 1) COOLANT PUMP RLY CTRL WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

335 3223 COOLING FANS SYSTEM 5-VOLT REF 1 A/C REFRIGERANT PRESS SENS SIG BANK 2 SENS 1 BANK 2 SENS 2 BLK WIRE BLK/WHT WIRE BRN/WHT WIRE CNSTR VENT FUSE COMPUTER DATA LINES SYSTEM DK GRN WIRE DK GRN/WHT WIRE ECT SENSOR SIG ENGINE COOLANT TEMPERATURE (ECT) SENSOR (IN REAR SIDE OF RIGHT CYLINDER HEAD) EVAP CANISTER PURGE SOL CTRL LO SPD COOLING FAN RELAY CTRL FUEL PUMP FUSE FUEL PUMP RELAY GENERATOR FIELD DUTY CYCLE SIG GENERATOR TURN ON SIG GROUND GRY WIRE HI SPD GMLAN SERIAL DATA BUS + HOT AT ALL TIMES IGN INSTRUMENT PANEL CLUSTER (IPC) J/C LO SPD GMLAN SERIAL DATA LOGIC LOW REF LT GRN WIRE MALFUNCTION IND MAP SENSOR SIG ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PARK/NEUTRAL SIG PNK/BLK WIRE PPL PPL/WHT WIRE RED/WHT WIRE RIGHT REAR FUSE BLOCK (UNDER RIGHT SIDE OF REAR SEAT) STARTING/ CHARGING SYSTEM STARTING/CHARGING SYSTEM TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRANSMISSIONS SYSTEM WHT WIRE YEL WIRE