Cadillac STS I (2004-2007) tan/blk Wiring diagrams

1 2 3 4 5 6 IGNITION 1 VOLTAGE BLK WIRE COMPUTER DATA LINES SYSTEM DISTANCE SENSING CRUISE CONTROL MODULE (BEHIND FRONT FASCIA, NEAR HOOD LATCH) ELECTRONIC BRAKE CONTROL MODULE(EBCM) (RIGHT FRONT CORNER OF ENGINE COMPART) ELECTRONIC SUSPENSION CONTROL (ECU) (BELOW RIGHT "C" PILLAR) GMLAN SERIAL WAKE UP GMLAN SERIAL WAKE UP GMLAN SERIAL DATA BUS + GMLAN SERIAL DATA BUS - GROUND HOT IN ON OR START INSTRUMENT PANEL MODULE (IPM) RED WIRE RED/WHT WIRE TAN WIRE TAN/BLK WIRE TO HEADLIGHT SYSTEM TO POWER DISTRIBUTION SYSTEM UNDERHOOD FUSE BLOCK (RIGHT SIDE OF ENGINE COMPARTMENT) CCP FUSE W/HEADLIGHT LEVELING WHT WIRE YEL WIRE

ABS FUSE B + SOL VLV CNTRL B+ MOTOR CONTROL BLK WIRE BRAKE PRESSURE MODULATOR VALVE (BPMV) BRN WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE EBCM FUSE GROUND HIGH EFFORT CTRL LOW EFFORT CTRL GRY WIRE GRY/BLK WIRE HI SPD GMLAN SER DATA W/U HOT AT ALL TIMES HOT IN RUN OR START IGN 1 RELAY LEFT FRONT INLET LEFT FRONT ISO- LATION LEFT FRONT OUTLET LEFT FRONT PRIME LONG ACCELEROMETER SIGNAL LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE PNK WIRE PPL PPL/WHT WIRE RED WIRE RED/BLK WIRE RIGHT FRONT INLET RIGHT FRONT ISO- LATION RIGHT FRONT PRIME RIGHT LEFT FRONT REAR INLET OUTLET RIGHT LEFT REAR INLET REAR OUTLET RIGHT REAR OUTLET SOLENOID VALVES TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPT) WHT WIRE YEL WIRE

ABS IND. BLK WIRE BLU WIRE BRAKE FLUID PRESSURE SENSOR (ON REAR OF EBCM) BRAKE PEDAL POSITION SENSOR (ATTACHED TO TOP OF BRAKE PEDAL ASSEMBLY) BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE EBCM GMLAN GRN WIRE GRY WIRE GRY/BLK WIRE HI SPD GMLAN SER DATA W/U IGN INSTRUMENT PANEL CLUSTER (IPC) INSTRUMENT PANEL MODULE (IPM) LEFT FRONT WHEEL SPEED SENSOR (WSS) LEFT REAR WHEEL SPEED SENSOR (WSS) LO SPD GMLAN SER DATA LOGIC LOW REF LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE PPL PPL/WHT WIRE RIGHT FRONT WHEEL SPEED SENSOR (WSS) RIGHT REAR WHEEL SPEED SENSOR (WSS) STEER WHEEL POS SIG A STEER WHEEL POS SIG B STEERING ANGLE SENSOR (ON BASE OF STEERING COLUMN) TAN WIRE TAN/BLK WIRE TRACTION CONTROL IND TRACTION CONTROL SWITCH WHT WIRE YAW RATE, LATERAL ACCELERATION SENSOR (UNDER FRONT PASSENGER SEAT) YEL WIRE

15 6 LOW SPD GMLAN DATA GROUND 2 19 PNK IGNITION 1 VOLTAGE TRUNK AJAR SIG WIRE 21 22 LOW SPD GMLAN LOW SPD GMLAN 3.6L 4.6L 4 10 BATTERY B+ LOW SPD GMLAN 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 SIG HOOD CLOSED SIG PPL BLK WIRE BLK/WHT WIRE CLASS 2 (SDM) COMPUTER DATA LINES SYSTEM DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DOOR OPEN SW SIG DOOR OPEN SWITCH DRIVER DOOR LATCH ASSEMBLY DRIVER DOOR MODULE (DDM) ENGINE CONTROLS SYSTEM FRONT PASSENGER DOOR LATCH ASSEMBLY FRONT PASSENGER DOOR MODULE (FPDM) GMLAN SERIAL DATA HOOD AJAR SWITCH (RIGHT FRONT STRUT TOWER) HORN CTRL HORNS SYSTEM HOT AT ALL TIMES HOT W/ IGN 1 RELAY ENERGIZED IGN INSTRUMENT PANEL CLUSTER (IPC) INSTRUMENT PANEL MODULE (IPM) (BEHIND RIGHT SIDE OF DASH) LEFT REAR DOOR LATCH ASSEMBLY LEFT REAR DOOR MODULE (LRDM) LOW SPD GMLAN DATA LT GRN WIRE ORG/BLK WIRE PARK LAMP CTRL PNK WIRE PPL REAR INTEGRATION MODULE (RIM) (UNDER LEFT SIDE OF REAR SHELF) RED/BLK WIRE REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) (UNDER REAR SPEAKER SHELF) RIGHT REAR DOOR LATCH ASSEMBLY RIGHT REAR FUSE BLOCK (UNDER RIGHT SIDE OF REAR SEAT) RIM FUSE SECURITY IND SPLICE PACK STARTING/ CHARGING SYSTEM TAN WIRE TAN/BLK WIRE TRUNK DIODE TRUNK LID RELEASE ACTUATOR UNDERHOOD FUSE BLOCK (IN ENGINE COMPT, NEXT TO LEFT STRUT TOWER) WHT WIRE YEL WIRE YEL/BLK WIRE

2 1 SERIAL DATA SERIAL DATA 2501 2500 COMPUTER DATA LINES SYSTEM 3.6L 3.6L 4.6L 32 11 25 35 43 42 55 LOW REFERENCE A/C REFRIG PRESS SENSOR A/C CLUTCH RELAY CTRL 38 54 LOW REFERENCE ECT SENSOR SIGNAL 4.6L (3.6L) (IN ENGINE HARNESS, 28 CM FROM MAF SENSOR CONNECTOR) 7 23 55 LOW REFERENCE ECT SENSOR SIGNAL SERIAL DATA A/C REFRIGERANT PRESSURE SENSOR (NEAR THE LEFT FRONT STRUT TOWER) AFTER BOIL FUSE AFTER BOIL HEATER PUMP (4.6L) AFTER BOIL RELAY (4.6L) AMBIENT AIR TEMPERATURE SENSOR (UNDER FRONT FACIA, NEAR CENTER OF GRILLE) BLK WIRE BLK/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM COOLANT LEVEL SWITCH (IN BOTTOM OF COOLANT RESERVOIR) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROL MODULE (ECM) (FRONT OF ENGINE, ON RIGHT VALVE COVER) ENGINE CONTROLS SYSTEM ENGINE COOLANT HOT ENGINE COOLANT LOW LEVEL FEED GRY WIRE HI SPEED FAN RELAY HIGH FAN FUSE HOT AT ALL TIMES INSTRUMENT PANEL CLUSTER LEFT COOLING FAN (BEHIND RADIATOR) LO SPEED FAN RELAY LOGIC LOW FAN FUSE LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE MAIN RELAY MAIN RELAY CTRL HI SPEED FAN RELAY CTRL LOW SPEED FAN RELAY CTRL MESSAGE CENTER ORG/ WIRE ORG/BLK (OR RED/BLK) WIRE ORG/BLK WIRE PNK WIRE RADIO RED WIRE RED/BLK WIRE RIGHT COOLING FAN (BEHIND RADIATOR) RIGHT REAR FUSE BLOCK (UNDER RIGHT SIDE OF REAR SEAT) RTN S/P FAN RELAY S107 (3.6L) (IN ENGINE HARN, 36 CM FROM BRAKE PRESSURE SENSOR CONNECTOR) SERIAL DATA SIG SPLICE PACK TAN (OR BLK/WHT) WIRE TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPARTMENT) WHT WIRE YEL WIRE

2 1 2501 2500 COMPUTER DATA LINES SYSTEM SERIAL DATA SERIAL DATA 3.6L 4.6L A/C COMP CLUTCH RELAY A/C COMPRESSOR CLUTCH A/C REFRIGERANT PRESSURE SENSOR (NEAR THE LEFT FRONT STRUT TOWER) BLK WIRE BLK/WHT WIRE COMP CLTCH FUSE COMPUTER DATA LINES SYSTEM DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROL MODULE (ECM) (FRONT OF ENGINE, ON RIGHT VALVE COVER) ENGINE CONTROLS SYSTEM FEED GRY WIRE HOT AT ALL TIMES HOT W/ IGN 1 RELAY ENERGIZED IGN 1 FUSE ORG/ WIRE ORG/BLK (OR RED/BLK) WIRE ORG/BLK WIRE PNK WIRE RED WIRE RED/BLK WIRE RIGHT REAR FUSE BLOCK (UNDER RIGHT SIDE OF REAR SEAT) RTN S107 (3.6L) (IN ENGINE HARN, 36 CM FROM BRAKE PRESSURE SENSOR CONNECTOR) SERIAL DATA SIG SPLICE PACK TAN (OR BLK/WHT) WIRE TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPARTMENT) WHT WIRE

4.6L 3.6L BANK 1 SENSOR 1 BLK WIRE DATA LINK CONNECTOR (DLC) (UNDER LOWER LEFT SIDE OF DASH) DISTANCE SENSING CRUISE CONTROL MODULE (BEHIND FRONT FASCIA, NEAR HOOD LATCH) DK GRN WIRE ELECTRONIC SUSPENSION (ESC) CONTROL MODULE (BELOW RIGHT "C" PILLAR) HEADLAMP LEVELING MODULE HIGH SPEED GMLAN DATA WAKE UP HIGH SPEED GMLAN DATA WAKEUP HIGH SPEED GMLAN ECM/ TCM WAKEUP HIGH SPEED GMLAN SERIAL DATA BUS + HOT AT ALL TIMES LOW SPEED GM LAN SERIAL DATA LOW SPEED GMLAN SERIAL DATA RED/WHT WIRE SPLICE TAN WIRE TAN/BLK WIRE TRANSMISSION CONTROL MODULE (TCM) (RIGHT FRONT CORNER OF ENGINE COMPT) UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPARTMENT) IPM/ ALDL FUSE YEL WIRE YEL/BLK WIRE

2 1 SERIAL DATA SERIAL DATA 2501 2500 COMPUTER DATA LINES SYSTEM 3.6L 3.6L 4.6L 38 54 LOW REFERENCE ECT SENSOR SIGNAL 4.6L 43 42 55 MAIN RELAY CTRL HI SPEED FAN RELAY CTRL LOW SPEED FAN RELAY CTRL 7 23 55 LOW REFERENCE ECT SENSOR SIGNAL SERIAL DATA AFTER BOIL COOLANT PMP REL AFTER BOIL FUSE AFTER BOIL HEATER PUMP (4.6L) AFTER BOIL RELAY (4.6L) BLK WIRE BRN WIRE COMPUTER DATA LINES SYSTEM COOLANT LEVEL SWITCH (IN BOTTOM OF COOLANT RESERVOIR) COOLANT LEVEL SWITCH SIGNAL LOW SPD GM/LAN SERIAL DATA DK BLU WIRE DK GRN WIRE ENGINE CONTROL MODULE (ECM) (FRONT OF ENGINE, ON RIGHT VALVE COVER) ENGINE COOLANT HOT ENGINE COOLANT LOW LEVEL GRY WIRE HI SPEED FAN RELAY HIGH FAN FUSE HOT AT ALL TIMES HVAC CONTROL MODULE (IN CENTER OF DASH, BELOW RADIO) INSTRUMENT PANEL CLUSTER LEFT COOLING FAN (BEHIND RADIATOR) LO SPEED FAN RELAY LOGIC LOW FAN FUSE LT BLU WIRE LT GRN WIRE MAIN RELAY MESSAGE CENTER PNK WIRE RADIO RIGHT COOLING FAN (BEHIND RADIATOR) RIGHT REAR FUSE BLOCK (UNDER RIGHT SIDE OF REAR SEAT) S/P FAN RELAY SERIAL DATA SPLICE PACK TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPARTMENT) WHT WIRE YEL WIRE

ABS FUSE BLK WIRE BLU WIRE BRAKE FLUID PRESSURE SENSOR (ON REAR OF EBCM) COMPUTER DATA LINES SYSTEM DK BLU WIRE EBCM FUSE ELECTRONIC BRAKE CONTROL MODULE (EBCM) (ON RIGHT FRONT CORNER OF ENGINE COMPT) GRN WIRE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN RUN OR START IGN 1 RELAY LONG ACCELEROMETER SIGNAL LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE LT LT PNK WIRE PPL PPL/WHT WIRE RED WIRE RED/BLK WIRE STEER WHEEL POS SIG A STEER WHEEL POS SIG B LOW REF STEERING ANGLE SENSOR (ON BASE OF STEERING COLUMN) TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPT) WHT WIRE YAW RATE, LATERAL ACCELERATION SENSOR (UNDER FRONT PASSENGER SEAT)

BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE GRY WIRE HOT AT ALL TIMES HOT W/ PARK LAMP RELAY ENERGIZED INSTRUMENT PANEL MODULE (IPM) (BEHIND GLOVE BOX) IPM/ ALDL FUSE LIC DIMMING 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 PPL RED WIRE RED/WHT WIRE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPT) VOLT CHECK FUSE WHT WIRE YEL WIRE YEL/BLK WIRE