Cadillac STS I (2004-2007) hot in run or start 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

5-VOLT REFERENCE 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) (ON LEFT FRONT FRAME RAIL BELOW HEADLAMP) 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 PPL PPL TP SENSOR 2 SIGNAL R/A TAC MOTOR CONTROL-1 TAC MOTOR CONTROL-2 TAN WIRE 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

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

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)

12 24 21 192 1485 5060 FOG LMP SW SIG HI BEAM SW SIG LOW SPD GMLAN SER DATA 6 3 1970 1317 LOW BEAM RLY CTRL FOG LMP RLY CTRL AIR CONDITIONING SYSTEM AUTO AUTO PPL AUTOMATIC HEADLAMP DIMMING RELAY (UNDERHOOD FUSE BLOCK) AUTOMATIC HIGH BEAM PWM SIG BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CLASS 2 (IPM) GMLAN (IPM) COMPUTER DATA LINES SYSTEM DK GRN WIRE DK GRN/WHT WIRE FOG LAMP FOG LAMP FUSE FOG LAMP RELAY FRONT FOG LAMP SWITCH FTP GMLAN (IPM) HEAD HIGH BEAM HIGH BEAM IND HOT AT ALL TIMES HOT IN RUN OR START HVAC CONTROL MODULE (AT CENTER OF DASH) INFO NOT AVAIL INSIDE REAR VIEW MIRROR INSTRUMENT PANEL CLUSTER INSTRUMENT PANEL MODULE (IPM) (BEHIND GLOVE BOX) LEFT FRONT TURN SIGNAL/ FOG LAMP ASSEMBLY LEFT HEAD- LAMP BALLAST LEFT HEADLAMP ASSEMBLY LIGHTS ON IND FOG LAMPS IND LO BEAM RELAY LOW (NOT USED) FTP LOW BEAM LOW REF LT BLU WIRE LT GRN WIRE LT LOW BEAM FUSE OFF PARK ORG/ WIRE PNK WIRE PNK/WHT WIRE PPL PPL PPL RED WIRE RED/WHT WIRE RIGHT FRONT TURN SIGNAL/ FOG LAMP ASSEMBLY RIGHT HEAD- LAMP BALLAST RIGHT HEADLAMP ASSEMBLY RT LO BEAM FUSE SEN SIG SER DATA SER DATA GMLAN SMART BEAM FUSE SPARE RELAY SPLICE PACK SUNLOAD SENSOR ASSEMBLY (CENTER OF DASH, IN DEFROSTER GRILLE) TAN WIRE TILT/LK LMP/CLM COILS FUSE TURN SIGNAL/ MULTIFUNCTION SWITCH UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENG COMPT) WHT WIRE YEL WIRE

12 24 21 192 1485 5060 FOG LMP SW SIG HI BEAM SW SIG LOW SPD GMLAN SER DATA 6 4 3 1970 1969 1317 LOW BEAM RLY CTRL HI BEAM RLY CTRL FOG LMP RLY CTRL AIR CONDITIONING SYSTEM AUTO AUTO PPL BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CLASS 2 (IPM) GMLAN (IPM) COMPUTER DATA LINES SYSTEM DK GRN WIRE DK GRN/WHT WIRE FOG LAMP FOG LAMP FUSE FOG LAMP RELAY FRONT FOG LAMP SWITCH FTP GMLAN (IPM) B+ HEAD HI BEAM RELAY HIGH BEAM HIGH BEAM IND HOT AT ALL TIMES HOT IN RUN OR START HVAC CONTROL MODULE (AT CENTER OF DASH) INFO NOT AVAIL INSTRUMENT PANEL CLUSTER INSTRUMENT PANEL MODULE (IPM) (BEHIND GLOVE BOX) LEFT FRONT TURN SIGNAL/ FOG LAMP ASSEMBLY LEFT HEADLAMP ASSEMBLY LIGHTS ON IND FOG LAMPS IND LO BEAM RELAY LOW (NOT USED) FTP LOW BEAM LOW REF LT BLU WIRE LT GRN WIRE LT HI BEAM FUSE LT LOW BEAM FUSE OFF PARK ORG/ WIRE PNK WIRE PNK/WHT WIRE PPL PPL PPL RED WIRE RIGHT FRONT TURN SIGNAL/ FOG LAMP ASSEMBLY RIGHT HEADLAMP ASSEMBLY RT HI BEAM FUSE RT LOW BEAM FUSE SEN SIG SER DATA SER DATA GMLAN SPARE RELAY SPLICE PACK SUNLOAD SENSOR ASSEMBLY (CENTER OF DASH, IN DEFROSTER GRILLE) TAN WIRE TAN/WHT WIRE TILT/LK LMP/CLM COILS FUSE TURN SIGNAL/ MULTIFUNCTION SWITCH UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENG COMPT) WHT WIRE YEL WIRE

ABS INDICATOR BACKLIGHTING BACKLIGHTING CTRL BLK WIRE BLK/WHT WIRE BRAKE FLUID LEVEL SWITCH (MASTER CYLINDER RESERVOIR) BRAKE INDICATOR BRN WIRE BRN/WHT WIRE CHARGE INDICATOR SECURITY INDICATOR CLASS 2 (ECM) CLASS 2 (IPM) CLOCK CLOCK CTRL DIC SW DIC SW SIG DIC SW LOW REF DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM/TCM FUSE ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMPERATURE INDICATOR FASTEN SAFETY BELT INDICATOR FRONT FOG LAMPS INDICATOR FUEL LEVEL GMLAN (EBCM) GMLAN (ECM) GMLAN (ECM) GMLAN GMLAN (ECM) GMLAN (RIM) GMLAN (IPM) GMLAN (RIM) GMLAN (SDM) GMLAN (TCM) HIGH BEAM INDICATOR HOT AT ALL TIMES HOT IN RUN OR START HUD FUSE INSTRUMENT PANEL CLUSTER (IPC) LEFT TURN INDICATOR LIGHTS ON INDICATOR LOW ENGINE OIL PRESSURE INDICATOR MALFUNCTION INDICATOR PNK WIRE POWER DISTRIBUTION SYSTEM PPL RED WIRE RED/WHT WIRE RIGHT TURN INDICATOR SIR INDICATOR SPEEDOMETER SPORT MODE INDICATOR TACHOMETER TAP UP/ DOWN ENABLE INDICATOR TCM/IPC/ ECM FUSE TEMPERATURE TPM INDICATOR CRUISE INDICATOR TRACTION CONTROL OFF INDICATOR TRIP ODOMETER TRIP RESET SW SIG TRIP RESET SWITCH TRIP/ODOMETER CTRL UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENG COMPT) WAIT TO START INDICATOR (NOT USED) WHT WIRE WINTER MODE INDICATOR

1 2 3 4 5 6 7 8 9 10 11 12 13 14 PPL 24 25 PPL 28 29 30 PPL BLK WIRE BLK/WHT WIRE BRN WIRE CANISTER VENT FUSE DK GRN WIRE DK GRN/WHT WIRE ECM FUSE ECM/ TCM/ IPC FUSE ECM/TCM FUSE CAM FUSE FUSE FUEL PUMP MOTOR RELAY FUEL PUMP MTR FUSE GRY WIRE HOT AT ALL TIMES HOT IN RUN OR START IGN 1 RELAY IGNITION COIL 1 (REAR OF RIGHT CYL HEAD) IGNITION COIL 2 (FRONT OF LEFT CYL HEAD) IGNITION COIL 3 (CENTER OF RIGHT CYL HEAD) IGNITION COIL 4 (CENTER OF LEFT CYL HEAD) IGNITION COIL 5 (FRONT OF RIGHT CYL HEAD) IGNITION COIL 6 (REAR OF LEFT CYL HEAD) LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE MAF FUSE MAIN RELAY NCA WIRE ODD COILS FUSE ORG/ WIRE ORG/BLK WIRE PNK WIRE PNK/BLK WIRE PPL PPL/WHT WIRE PRE POST EVEN COILS FUSE RED/WHT WIRE RIGHT REAR FUSE BLOCK (UNDER RIGHT SIDE OF REAR SEAT) SPARK PLUG SPLICE PACK TAN WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPT) WHT/BLK WIRE YEL WIRE

2500 2501 COMPUTER DATA LINES SYSTEM A/C PRESS LOW REF APP LOW REF APP LOW REF A/C REFRIGERANT PRESSURE SENSOR (NEAR LEFT FRONT STRUT TOWER) A/C SYSTEM ACCELERATOR PEDAL POSITION (APP) SENSOR (ATTACHED TO TOP OF ACCELERATOR PEDAL) APPS 1 SIG VEHICLE SPEED SIG MAF SEN SIG BLK WIRE BRN WIRE BRN/WHT WIRE COOLING FANS SYSTEM 473 5069 DATA WAKE-UP DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM, TCM FUSE ENGINE CONTROL MODULE (ECM) (BELOW LEFT HEADLAMP) EVAP VENT SOL CTNL A/C PRESS SENS SIG EVAPORATIVE EMISSIONS (EVAP) CANISTER VENT SOLENOID (ABOVE REAR DIFFERENTIAL) EXTERIOR LIGHTS SYSTEM 17 447 FAN RLY CTRL MAIN RLY CTRL FUEL PMP RLY CNTL MIL CNTL A/C COMP CLTCH RLY FUSE GRY WIRE HOT AT ALL TIMES HOT IN RUN OR START IAT SEN SIG IAT SIG IGN IGN 1 VLT IGN 1 VLT IGN 1 VLT BATTERY + VLT APPS 2 SIG PNK PNK WIRE INSIDE REARVIEW MIRROR INSTRUMENT PANEL CLUSTER (IPC) INSTRUMENT PANEL MODULE (IPM) LO SPD COOL FAN RLY LOGIC LOW REF LT BLU WIRE MAF LOW REF A/C PRESS LOW REF MAIN RELAY MASS AIR FLOW (MAF) SENSOR (IN AIR INTAKE DUCT) MIL IND ORG/BLK WIRE ORG/WHT WIRE PNK WIRE PNK/BLK WIRE PPL RADIO RED/WHT WIRE SENS SIG SENSOR 1 STARTING SYSTEM STOPLAMP SW SIG STRTR ENABLE RLY CNTL TAN WIRE TAN/BLK WIRE TCM/ IPC/ ECM FUSE TO EVEN COILS FUSE (DIAGRAM 4 OF 5) TRANSMISSION CONTROL MODULE (TCM) UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPT) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE