Cadillac STS I (2004-2007) red 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

1 2 3 4 5 LOW REF 5 VOLT REF IGNITION 3 VOLT RECIRC DR POS SIG RECIRC DR CNTRL A/C COMP CLUTCH RELAY AMBIENT LIGHT SENSOR SIG BATTERY LED BACKLIGHT DIMMING CNTRL BLK WIRE BLK/WHT WIRE BLOWER FUSE BLOWER RELAY BRN WIRE CCP FUSE COMP CLTCH FUSE COOLANT LEVEL SWITCH SIGNAL MED BLOWER MOTOR CTRL DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE EVAPORATOR TEMPERATURE SENSOR (INSIDE HVAC CASE, AT EVAPORATOR CORE) GRN WIRE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN HOT IN RUN OR START HVAC CONTROL MODULE (IN CENTER OF DASH, BELOW RADIO) INSIDE AIR TEMPERATURE SENSOR (ON DASH, RIGHT OF STEERING COLUMN) LEFT SUNLOAD SENSOR SIGNAL LOW REFERENCE LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE NCA WIRE PNK 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 WIRE PNK LT WIRE PNK WIRE POWER DISTRIBUTION SYSTEM POWER SEAT SYSTEM (HEATED SEAT CIRCUIT) PPL PPL PPL PPL LT PPL/WHT WIRE RECIRC DOOR CTRL RECIRCULATION ACTUATOR (ON HVAC MODULE, LEFT OF BLOWER MOTOR) RED WIRE RED/WHT WIRE RIGHT SUNLOAD SENSOR SIGNAL RUN WIRE SOLID STATE SUNLOAD SENSOR (CENTER OF DASH, IN DEFROST GRILL) TAN WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPARTMENT) WASH NOZ/ AQS FUSE WHT WIRE WHT/BLK 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

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)

ALC RELAY FUSE ALC SOLENOID FUSE AUTOMATIC LEVEL CONTROL (ALC) COMPRESSOR RELAY BLK WIRE BRN WIRE COMPUTER DATA LINES COMPUTER DATA LINES SYSTEM DK GRN WIRE ELECTRONIC SUSPENSION CONTROL MODULE (BELOW RIGHT"C"PILLAR) ELECTRONIC SUSPENSION CONTROL(ESC) MODULE FUSE FUSE BLOCK LEFT REAR (UNDER LEFT SIDE OF REAR SEAT) FUSE BLOCK UNDER HOOD (RIGHT FRONT SIDE OF ENGINE COMPARTMENT) GMLAN SER DATA AUTOMATIC LEVEL GMLAN SER DATA GMLAN SER DATA GMLAN SER DATA GMLAN SER DATA GRN WIRE HOT AT ALL TIMES IPC CLASS 2 LEFT FRONT SUSPENSION DAMPER LEFT FRONT SUSPENSION POSITION SENSOR (TOP OF RIGHT FRONT SUSPENSION) LEFT REAR SUSPENSION DAMPER LEFT REAR SUSPENSION POSITION SENSOR (AT TOP OF LEFT REAR SUSPENSION) LEVEL RELAY LOGIC INSTRUMENT PANEL CLUSTER (IPC) LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE MESSAGE CENTER MESSAGE REQUEST B+ NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK BATT WIRE PNK WIRE PPL PPL/WHT WIRE RED WIRE RED/BLK WIRE RED/WHT WIRE RF DAMPER CTRL LF DAMPER CTRL RIGHT FRONT SUSPENSION DAMPER RIGHT FRONT SUSPENSION POSITION SENSOR (AT RIGHT FRONT UPPER CONTROL ARM) RIGHT REAR SUSPENSION DAMPER RIGHT REAR SUSPENSION POSITION SENSOR (AT TOP OF RIGHT REAR SUSPENSION) SENSOR RETURN SENSOR RETURN SENSOR RETURN SENSOR RETURN SERVICE RIDE CONTROL SYSTEM TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCM/IPC/ECM FUSE WHT WIRE WHT/BLK WIRE YEL WIRE

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

ANTI-THEFT SYSTEM BAT POS VOLTAGE BLK WIRE BLK/WHT WIRE BRN/WHT WIRE COURTESY LAMP SPLY VOLTAGE 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/ IGN 1 RELAY ENERGIZED LEFT TURN SIGNAL FUSE LOW SPD GMLAN SERIAL DATA LR STOP/TURN LMP SPLY VOLTAGE LT BLU WIRE LT BLU/WHT WIRE NAVIGATION SYSTEM ORG/BLK WIRE PNK WIRE POWER DISTRIBUTION SYSTEM REAR INTEGRATION MODULE (RIM) (LEFT SIDE OF REAR COMPARTMENT, UNDER REAR SHELF) REAR PARKING ASSIST CHIME SIG RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT REAR FUSE BLOCK (UNDER RIGHT SIDE OF REAR SEAT) RIGHT TURN SIGNAL FUSE RIM FUSE RR TURN SIG LMP SPLY VOLTAGE HOOD CLOSED SW SIG PPL SPLICE PACK TAN WIRE TRUNK AJAR SW SIG TRUNK REL RLY OUTPUT-COIL STANDING LMP RLY FEED TRUNK, TAILGATE, FUEL DOORS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM EXTERIOR LIGHTS SYSTEM WHT WIRE YEL WIRE YEL/BLK WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 PPL 24 25 PPL 28 29 30 PPL BANK 1 SENSOR 2 BLK WIRE BLK/WHT WIRE BRN WIRE CHARGING CIRCUIT CMP EXHAUST 1 GEN FDC SIG CMP INTAKE 1 CMP INTAKE 2 CMP INTAKE 2 CMP EXHAUST 1 CRANKSHAFT POSITION SENSOR (LEFT SIDE OF ENGINE) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECT SIG ENGINE CONTROL MODULE (ECM) (FRONT OF ENGINE, ON RIGHT VALVE COVER) FUEL INJECTORS GRY WIRE GRY/BLK WIRE HEATED OXYGEN SENSOR BANK 1 SENSOR 1 (ON RIGHT EXHAUST PIPE) HEATED OXYGEN SENSOR BANK 1 SENSOR 2 (DOWNSTREAM OF RIGHT CATALYTIC CONVERTER) HEATED OXYGEN SENSOR BANK 2 SENSOR 1 (ON LEFT EXHAUST PIPE) HEATED OXYGEN SENSOR BANK 2 SENSOR 2 (DOWNSTREAM OF LEFT CATALYTIC CONVERTER) IC 3 CTRL CKP SENS LO IC 4 SIG CKP HI IC 6 CTRL IC 2 CTRL IMRC SIG LOW REF INJ 2 CTRL INJ 1 CTRL INJ 6 CTRL KNOCK SENSOR (BANK 1) (RIGHT SIDE OF ENGINE) KNOCK SENSOR (BANK 2) (LEFT SIDE OF ENGINE) KS 1 SIG KS LOW REF LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK/BLK WIRE PPL PPL CMP INTAKE 1 CMP EXHAUST 2 TAC MTR CTRL PPL/WHT WIRE RED WIRE RED/WHT WIRE TAC MTR CTRL TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TPS SIG 1 BARO SIG WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE