Cadillac STS I facelift (2007-2011) blk Wiring diagrams

2500 2500 9342 COMPUTER DATA LINES SYSTEM 2501 2501 1150 1787 830 873 COMPUTER DATA LINES SYSTEM 3.6L 42 55 2500 2501 SERIAL DATA BUS (+) SERIAL DATA BUS (-) 5727 342 345 883 885 872 1056 1337 COMPUTER DATA LINES SYSTEM ABS FUSE ABS IND. ABS MTR FUSE BLK WIRE BRAKE FLUID LEVEL SWITCH (IN MASTER CYLINDER RESERVOIR) BRAKE IND BRAKE PRESSURE MODULATOR VALVE (BPMV) BRK VAC PUMP RELAY BRN WIRE CAN BUS HI SERIAL DATA CAN BUS LO SERIAL DATA COMPUTER DATA LINES SYSTEM DK GRN WIRE DRIVER INFORMATION CENTER (DIC) DISPLAY ELECTRONIC BRAKE CONTROL MODULE (EBCM) (RIGHT FRONT CORNER OF ENGINE COMPT) ENGINE CONTROL MODULE (ECM) (FRONT OF ENGINE, ON RIGHT VALVE COVER) GRN WIRE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT W/ PWR/TRN RELAY ENERGIZED BRK VAC PUMP FUSE IGN INSTRUMENT PANEL CLUSTER (IPC) LF WHEEL SPD SENS LOW REF LOGIC LT BLU WIRE LT GRN/BLK WIRE MOTOR CONTROL NCA WIRE ORG/ WIRE PPL RED/BLK WIRE SERIAL DATA SERIAL DATA (+) (1) SERIAL DATA (+) (1) BATTERY POSITIVE VOLT TAN WIRE TAN/BLK WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPT) VACUUM PUMP RLY CTRL VARIABLE EFFORT STEERING ACTUATOR (ON LEFT SIDE OF POWER STEERING GEAR) WHEEL SPD SENS LOW REF RF WHEEL SPD SENS SIGNAL RR WHEEL SPD SENS SIGNAL LR WHT WIRE YEL WIRE

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

"C" PILLAR) 1-17 (NOT USED) 1-32 (NOT USED) 18 19 20 21-56 SERIAL DATA WAKEUP IGN 1 BATT POSITIVE VOLT PNK WIRE 3.6L 33 34-46 HI SPD GMLAN SERIAL DATA (-) (NOT USED) 42 55 SERIAL DATA BUS (+) SERIAL DATA BUS (-) 47 48-50 CAN BUS LOW SERIAL DATA (NOT USED) ABS FUSE ABS MTR FUSE BLK WIRE BRAKE PRESSURE MODULATOR VALVE (BPMV) BRK VAC PUMP RELAY BRN WIRE BRN/WHT WIRE CAN BUS HIGH SERIAL DATA CAN BUS LOW SERIAL DATA COMPUTER DATA LINES SYSTEM DK GRN WIRE ELECTRONIC BRAKE CONTROL MODULE (EBCM) (RIGHT FRONT CORNER OF ENGINE COMPT) ELECTRONIC SUSPENSION CONTROL (ESC) MODULE (BELOW RIGHT ENGINE CONTROL MODULE (ECM) (FRONT OF ENGINE, ON RIGHT VALVE COVER) GRN WIRE GRY WIRE HI SPD GMLAN SERIAL DATA (+) HI SPD GMLAN SERIAL DATA (+) BATT POSITIVE VOLT HOT AT ALL TIMES HOT W/ PWR/TRN RELAY ENERGIZED BRK VAC PUMP FUSE INSTRUMENT PANEL MODULE (IPM) LO SPD GMLAN SERIAL DATA LT BLU WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE NCA WIRE ORG/ WIRE PNK 9 10 WIRE RED/BLK WIRE RED/WHT WIRE RF WHEEL SPD SENS LOW REF RR WHEEL SPD SENS SIG LR WHEEL SPD SENS SIG TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRACTION CONTROL IND TRACTION CONTROL SWITCH (TCS) TRACTION CTRL SW SIG 2 UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPT) VACUUM PUMP RLY CTRL VARIABLE EFFORT STEERING ACTUATOR (IN LEFT REAR ENGINE COMPT, ON STEERING RACK) VEHICLE STABILITY CONTROL MODULE (LEFT REAR WHEEL HUB ASSEMBLY) WHT WIRE 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

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

28 CM 29 PNK WIRE 5 6 7 8 PPL AUXILIARY MODE ACTUATOR (INSIDE CENTER CONSOLE, ON RIGHT REAR SIDE) BATT POSITIVE VOLT LOW REF GND BLK WIRE BLK/WHT WIRE BLOWER MTR SPD CTRL BLU WIRE BLWR FUSE BRN WIRE CCP FUSE (RIGHT FRONT SIDE OF ENGINE COMPT) CCP/ RLY COILS COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/BLK WIRE DK GRN WIRE DK LT FRT BLWR RELAY FUSE GRN WIRE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT W/ RUN/ CRNK RELAY ENERGIZED HVAC CONTROL MODULE (CENTER OF DASH, BELOW RADIO) INTERIOR LIGHTS SYSTEM 1614 2273 1236 1199 LED BACKLIGHT DIMMING CTRL LOW SPD GMLAN SERIAL DATA LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE LT LT LT PPL MEDIUM BLOWER MTR CTRL NCA WIRE ORG/ WIRE PNK RUN/CRANK IGN 1 VOLT WIRE PPL PPL/WHT WIRE RECIRCULATION ACTUATOR (ON HVAC MODULE, LEFT OF BLOWER MOTOR) RED WIRE RED/WHT WIRE TAN WIRE TAN/RED WIRE UNDERHOOD FUSE BLOCK WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE

1 2 BLOWER MTR SPLY VOLT BLOWER MTR FAN CTRL PPL 2 PPL/ 20 PNK WIRE 5 6 7 8 PPL AUXILIARY HVAC CONTROL MODULE (W/ REAR HEATED SEAT) BLK WIRE BLOWER MOTOR (UNDER DASH, BEHIND GLOVE BOX) BLOWER MOTOR CONTROL MODULE (BEHIND RIGHT SIDE OF INSTRUMENT PANEL) BLOWER MTR RESISTOR ASSEMBLY SPLY VOLT BLOWER MTR SPD CTRL BLU WIRE DK BLU WIRE DK BLU/BLK WIRE EVAPORATOR TEMPERATURE SENSOR (INSIDE HVAC CASE, AT EVAPORATOR CORE) GND VOLT 4 LT 3 PNK WIRE GRN WIRE GRY WIRE GRY/BLK WIRE HOT W/ RUN/ CRNK RELAY ENERGIZED HTD WASH/ AQS FUSE LEFT AIR TEMPERATURE ACTUATOR (LEFT CENTER OF DASH, ON LEFT SIDE OF HVAC MODULE) LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE ORG/ WIRE PPL PPL LT PPL/WHT WIRE RED WIRE RUN/CRANK IGN 1 SIDE OF ENGINE COMPT) TAN WIRE TAN/RED WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE

3.6L, 4.6L W/O TRAILER PROVISIONS 4.4L, 4.6L 3.6L 4.4L, 4.6L W/ TRAILER PROVISIONS 4.6L 4.4L 3.6L 5514 (OR 2751) A/C CMPRSR CLUTCH RELAY CTRL A/C COMPRESSOR CLUTCH A/C COMPRESSOR CLUTCH RELAY A/C REFRIG PRESS SENS BLK WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECT SENSOR SIGNAL ENGINE COOLING FAN ENGINE COOLING FAN RESISTOR FAN 1 FUSE A/C CLUTCH FUSE FAN-2 FUSE GRN WIRE GRY WIRE HI FAN SPD RELAY HI SPD FAN RLY CTRL HOT AT ALL TIMES HOT W/ PWR/ TRN RELAY ENERGIZED LEFT ENGINE COOLING FAN (BEHIND RADIATOR) LO FAN SPD RELAY LOW REF LOW REFERENCE LOW SPD FAN RLY CTRL LT BLU WIRE MODE ACTUATOR (ON TOP LEFT SIDE OF HVAC MODULE) ORG/ WIRE ORG/BLK WIRE POST 02 SNSR FUSE RIGHT ENGINE COOLING FAN (BEHIND RADIATOR) S/P FAN RELAY SERIAL DATA BUS- TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPT) WHT WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE

A/C CMPRSR CLTCH RELAY A/C COMPRESSOR CLUTCH AC CLTCH FUSE BLK WIRE COMPUTER DATA LINES SYSTEM DATA BUS - DK GRN WIRE DK GRN/WHT WIRE EXCEPT 3.6L 3.6L GRY WIRE HOT AT ALL TIMES HOT W/ PWR/TRN RELAY ENERGIZED LOW REF ORG/ WIRE ORG/BLK WIRE POST 02 SNSR FUSE RLY CTRL SENS SIG TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPT) WHT WIRE

1 2 3 I/P LAMP FUSE SPLY VOLT 1 BACKLIGHT LAMP CTRL LED BACKLIGHT DIMMING CTRL BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CRUISE CONTROL SYSTEM POWER DISTRIBUTION SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DK GRN/YEL WIRE EXTERIOR LIGHTS SYSTEM POWER DISTRIBUTION SYSTEM GRY WIRE HEADLAMP WASHER RLY CTRL HOT AT ALL TIMES HOT W/ PARK LAMP RELAY ENERGIZED I/P MDL/ ALDL FUSE INSTRUMENT PANEL MODULE (IPM) (RIGHT SIDE OF DASH, BEHIND GLOVE BOX) INTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM NAVIGATION, SOUND SYSTEMS LIC/DIM FUSE LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/WHT WIRE ORG/ WIRE PNK WIRE PNK/BLK WIRE PNK/WHT WIRE POWER DISTRIBUTION SYSTEM PPL PPL REMOTE RADIO CTRL HEAD ACC SPLY VOLT IGN MODE SW OFF LED SIG RED WIRE RED/WHT WIRE SIDE OF ENGINE COMPT) STOP LAMP SW SIG RUN/CRANK IGN 1 VOLTAGE PNK WIRE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT V/ CHECK FUSE WHT WIRE WIPER/WASHER SYSTEM YEL WIRE YEL/BLK WIRE