Cadillac STS I (2004-2007) pnk Wiring diagrams

5-VOLT REFERENCE BLK WIRE BRAKE PEDAL POS SENSOR SIGNAL BRAKE PEDAL POSITION SENSOR (ON BRAKE PEDAL SUPPORT) BRN WIRE CLASS 2 SERIAL DATA COMPUTER DATA LINES SYSTEM CRUISE CONTROL SWITCH CRUISE INDICATOR DK GRN WIRE ENGINE CONTROL MODULE (ECM) (FRONT OF ENGINE, ON RIGHT VALVE COVER) FUSE FUSE BLOCK UNDERHOOD (RIGHT FRONT SIDE OF ENGINE COMPARTMENT) TCM/ IPC FUSE GRY WIRE HOT IN RUN OR START IGNITION INSTRUMENT PANEL CLUSTER (IPC) INSTRUMENT PANEL MODULE (RIGHT SIDE OF DASH BEHIND GLOVE BOX) LOGIC LOW REFERENCE NCA WIRE ON OFF PNK WIRE PPL PPL ACCY SUPP VOLTAGE PPL CLASS 2 SERIAL DATA PPL TP SENSOR 2 SIGNAL R/A TAC MOTOR CONTROL-1 TAC MOTOR CONTROL-2 TCC/CRUISE CONTROL RELEASE SIG THROTTLE ACTUATOR CONTROL (TAC) MODULE (PART OF THROTTLE BODY ASSEMBLY) THROTTLE ACTUATOR CONTROL (TAC) MOTOR THROTTLE POSITION (TP) SENSOR TP SENSOR 1 SIGNAL TURN SIGNAL/ MULTIFUNCTION SWITCH 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

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

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

1 2 3 4 5 6 LOW REF AIR QUAL HC SENS IGN 1 VOLTAGE AIR QUAL NOX SENS A/C COMPRESSOR CLUTCH A/C DEF AIR QUALITY SENSOR (IF EQUIPPED) (UNDER FRONT FACIA, NEAR CENTER OF GRILLE) BLK WIRE BLOWER CONTROLLER (IN PASS COMPT, UNDER DASH, BEHIND GLOVE BOX) BLOWER MOTOR (UNDER DASH, BEHIND GLOVE BOX) BLOWER MTR FAN CONTROL BLOWER MTR RESISTOR ASSY SUPPLY VOLTAGE BLOWER MTR SPEED CTRL BLU WIRE BRN WIRE COLD DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRIVER AIR TEMPERATURE ACTUATOR (ON LEFT SIDE OF HVAC MODULE) DRY AIR TEMP SIGNAL FRONT PASSENGER AIR TEMPERATURE ACTUATOR (ON RIGHT SIDE OF HVAC MODULE) GROUND GRY WIRE GRY/BLK WIRE HOT HOT W/ IGN 1 RELAY ENERGIZED IGN 1 FUSE LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE MODE ACTUATOR (ON TOP LEFT SIDE OF HVAC MODULE) MODE VALVE SIGNAL PASS AIR TEMP SIGNAL 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 WIRE POWER SEAT SYSTEM (HEATED SEAT CIRCUIT) PPL PPL/WHT WIRE RIGHT REAR FUSE BLOCK (UNDER RIGHT SIDE OF REAR SEAT) SPLICE PACK TAN WIRE 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

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

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