Cadillac CTS I (2002-2007) tan/wht Wiring diagrams

3.6L 646 1807 PPL 771 772 2501 2500 36 24 21 20 SIG B SIG C BUS - BUS + AUTOMATIC TRANSMISSION BACKUP LAMP SUPPLY VOLTAGE BACKUP LAMP SWITCH (M/T) BACKUP SW SIG BLK WIRE BLK/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DK GRN WIRE HOT AT ALL TIMES INSIDE REARVIEW MIRROR (ISRVM) LEFT BACK-UP LAMP RIGHT BACK-UP LAMP LEFT REAR FUSE BLOCK (BELOW LEFT REAR SEAT) LICENSE LAMP ASSEMBLY LT GRN WIRE REAR INTEGRATION MODULE (UNDER PACKAGE SHELF TRIM PANEL) RELAY CONTROL SERIAL DATA REV LAMP RELAY REVERSE LAMP FUSE SIG SIG A TAN/WHT WIRE TRANSMISSION CONTROL MODULE (TCM) (A/T) (AT RIGHT FRONT OF ENGINE COMPT) TRANSMISSION INTERNAL MODE SWITCH (IMS) WHT WIRE YEL WIRE

6 SPD M/T OTHERS BLK WIRE BRN WIRE BRN/WHT WIRE CLASS 2 (DIM) CLASS 2 SERIAL DATA COMPARTMENT) COMPUTER DATA LINES SYSTEM DK GRN WIRE DK GRN/WHT WIRE FLASH TO PASS SWITCH SIGNAL FOG LAMP FUSE FOG LAMP RELAY FOG LAMP RLY CTRL LO BEAM RLY CONTROL HI BEAM RLY CTRL COIL SPLY VOLT CTRL FRONT FOG LAMP IND FRONT FOG LAMP SWITCH GRY WIRE HEADLAMP RELAY CONTROL HI LOW HIGH BEAM IND HOT AT ALL TIMES HOT IN RUN OR START HVAC CONTROL MODULE (BEHIND CENTER OF DASH, BELOW RADIO) INSTRUMENT PANEL CLUSTER (IPC) LEFT FRONT FOG LAMP LEFT FRONT TURN SIGNAL/ FOG LAMP ASSEMBLY LOGIC LT BLU WIRE LT BLU/BLK WIRE M/T NCA WIRE ORG/ WIRE OTHERS 6 SPD M/T PARK HEAD HEAD OFF AUTO AUTO PARK OFF PNK WIRE PNK/WHT WIRE PPL PPL PPL RIGHT FRONT FOG LAMP RIGHT FRONT TURN SIGNAL/ FOG LAMP ASSEMBLY SUNLOAD SENSOR (TOP CENTER OF I/P, ON DEFROST GRILL) TAN WIRE TAN/WHT WIRE TURN SIGNAL/ MULTIFUNCTION SWITCH UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE WHT WIRE YEL WIRE

BLK WIRE DK GRN WIRE DK GRN/WHT WIRE HI BEAM RELAY HIGH BEAM HOT AT ALL TIMES LEFT HEADLAMP LOW BEAM LOW BEAM/HID RELAY LT GRN WIRE LT GRN/BLK WIRE LT HI BEAM FUSE RT HI BEAM FUSE NCA WIRE PNK WIRE PNK/WHT WIRE RIGHT HEADLAMP RT LOW BEAM FUSE LT LOW BEAM FUSE TAN WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPARTMENT) W/ HIGH INTENSITY DISCHARGE HEADLAMPS W/O HIGH INTENSITY DISCHARGE HEADLAMPS WHT WIRE YEL WIRE

1314 419 EXTERIOR LIGHTS SYSTEM ENGINE CONTROLS 5.7L 818 1537 ANTI-LOCK BRAKES SYSTEM ABS INDICATOR B+ CLASS 2 (ECM) BACKLIGHTING BACKLIGHTING CTRL BLK WIRE BLK/WHT WIRE BRAKE FLUID LEVEL SWITCH (ON BRAKE FLUID RESERVOIR) BREAK INDICATOR BRN WIRE BRN/WHT WIRE CHARGE INDICATOR CLASS 2 (DIM) CLASS 2 (EBCM) CLASS 2 (ECM) CLASS 2 (ECM) B+ CLASS 2 (RIM) CLASS 2 (SDM) COMPUTER DATA LINES SYSTEM CRUISE INDICATOR DK BLU WIRE DK BLU/WHT WIRE DK GRN/WHT WIRE ECM/TCM FUSE ELEC PRNDL FUSE ELECTRONIC PRNDL ENGINE COOLANT TEMPERATURE INDICATOR EXTERIOR LIGHTS FASTEN SAFETY BELT INDICATOR FRONT FOG LAMPS INDICATOR FUEL LEVEL GROUND GRY WIRE HIGH BEAM INDICATOR HOT AT ALL TIMES HOT IN ACC OR RUN HOT IN RUN OR START IGNITION 1 VOLTAGE INSTRUMENT PANEL CLUSTER (IPC) LED DIMMING SIG LEFT TURN INDICATOR LIGHTS ON INDICATOR LOGIC LOW TIRE PRESSURE INDICATOR LT BLU WIRE LT BLU/WHT WIRE MALFUNCTION IND LAMP (MIL) ORG/BLK WIRE PARK BRAKE SWITCH (ON PARK BRAKE ASSEMBLY) PNK WIRE PPL PPL/WHT WIRE RED/WHT WIRE RIGHT DRIVER INFORMATION CENTER (DIC) (5.7L) RIGHT TURN INDICATOR SECURITY INDICATOR SERIAL DATA PARK BRAKE SW SIG SIR INDICATOR SKIP SHIFT IND SPEEDOMETER CONTROL B+ CLASS 2 B+ SPEEDOMETER LOW ENGINE OIL PRESSURE IND SPORT MODE INDICATOR SYSTEM TACHOMETER TACHOMETER CONTROL TAN/WHT WIRE TCM/IPC FUSE TEMPERATURE TOWER) TRACTION CONTROL OFF INDICATOR TRANSMISSION RANGE SW SIG A TRANSMISSION RANGE SW SIG B TRANSMISSION RANGE SW SIG C TRANSMISSION RANGE SW SIG C TRANSMISSION RANGE SW SIG P TRANSMISSION RANGE SW SIG P TRANSMISSIONS SYSTEM COMPUTER DATA LINES SYSTEM TRIP ODOMETER TRIP RESET SW SIG TRIP RESET SWITCH TRIP/ODOMETER CTRL UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPT) VEHICLE SPEED SIG VOLTAGE WAIT TO START INDICATOR (NOT USED) WHT WIRE WINTER MODE INDICATOR YEL WIRE

22 5 48 42 VEHICLE SPEED SIG ENGINE SPEED SIG SERIAL DATA FUEL LEVEL SENS SIG 5.7L BLK WIRE BLU WIRE BRN WIRE CLEAR DIC SIG CLR COMPUTER DATA LINES SYSTEM DIC BACK SIG BACK DK BLU WIRE DK GRN/WHT WIRE ENGINE CONTROL MODULE (ECM) (3.6L, 2.8L) (FRONT OF RIGHT VALVE COVER) ENGINE CONTROLS SYSTEM ENGINE OIL LEVEL/ ENGINE OIL LEVEL/ TEMPERATURE SENSOR (3.6L, 2.8L) (IN OIL PAN) ENGINE OIL PRESSURE (EOP) SENSOR (3.6L, 2.8L) (IN OIL FILTER HOUSING) ENGINE OIL PRESSURE (EOP) SENSOR (5.7L) EXCEPT 5.7L FUEL LEVEL SENS SIG FUEL LEVEL SENSOR FUEL LEVEL SENSOR TEMPERATURE SENSOR (5.7L) FUEL PUMP, SENSOR ASSEMBLY (IN FUEL TANK) GROUND GRY WIRE INFORMATION DN SW SIG INFO INFORMATION UP SW SIG LEFT STEERING WHEEL CONTROLS LOW REFERENCE LT BLU WIRE MESSAGE CENTER LOGIC MESSAGE REQUEST ORG/ WIRE ORG/BLK WIRE POWERTRAIN CONTROL MODULE (PCM) (5.7L) PPL PPL COMPUTER DATA LINES SYSTEM PPL PPL RADIO SCROLL DIC SIG SECONDARY FUEL SENDER ASSEMBLY (LEFT SIDE OF FUEL TANK) SERIAL DATA STEERING WHEEL CONTROL ASSEMBLY SWITCH 1 SWITCH 2 SWITCH 3 SWITCH 4 TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TUNE/SEL VEHICLE SPEED SIGNAL WHT WIRE

6 7 9 8 DOOR LOCK SW UNLOCK SIG DOOR LOCK SW LOCK SIG BATTERY GROUND BATTERY BATTERY GROUND BLK WIRE BLK/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DOOR AJAR SIGNAL GND DOOR KEY UNLOCK SWITCH SIGNAL DOOR AJAR SIGNAL DOOR OPEN SIGNAL DOOR OPEN SIGNAL GND DR MOD PWR CIRCUIT BREAKER DRIVER DOOR LATCH ASSEMBLY DRIVER DOOR MODULE (ON LEFT DOOR, UNDER DOOR TRIM) DRIVER DOOR SWITCH ASSEMBLY (DDSA) DRIVER DR MOD FUSE FRONT PASSENGER DOOR LATCH ASSEMBLY FRONT PASSENGER DOOR MODULE (ON RIGHT FRONT DOOR, UNDER DOOR TRIM PANEL) GRN WIRE GROUND GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES INTERIOR LIGHTS SYSTEM 694 295 JOINT CONNECTOR KEYLESS ENTRY ANTENNA SIGNAL LEFT REAR FUSE BLOCK (BELOW LEFT REAR SEAT) LT BLU WIRE LT GRN WIRE MEMORY SEAT SWITCH ORG/BLK WIRE PPL CLASS 2 SERIAL DATA PPL COMPUTER DATA LINES SYSTEM 1177 746 244 PSGR DR MOD FUSE RADIO ANTENNA MODULE (ABOVE HEADLINER, NEAR REAR WINDOW) REAR COMPARTMENT LID RELEASE SWITCH REAR DR MOD FUSE REAR GLASS ANTENNA RED WIRE RED/WHT WIRE RFA GRID RIGHT REAR FUSE BLOCK (BELOW RIGHT REAR SEAT) TAN WIRE TAN/WHT WIRE TRUNK DR RELEASE FUSE WHT RED/ WIRE WHT WIRE YEL WIRE

847 400 ANTI-LOCK BRAKES SYSTEM ACC VOLT CC SW SIG APP SENS SIG ACCELERATOR PEDAL POSITION SENSOR (ABOVE ACCELERATOR PEDAL) ANTI-LOCK BRAKES SYSTEM APPROXIMA- TELY 24 CM FROM EBCM CONNECTOR) AUTOMATIC TRANSMISSION MANUAL SHIFT SHAFT SWITCH ASSEMBLY BLK WIRE BLK/WHT WIRE BRK SW SIG VEHICLE SPEED SIGNAL BRN WIRE BRN/WHT WIRE COOLING FANS SYSTEM CRANK VOLT P/N SIG EVAP SOL CTRL CRUISE CONTROL SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE ENGINE CONTROL MODULE (FRONT OF RIGHT VALVE COVER) EVAP CANISTER VENT SOLENOID (ABOVE REAR DIFFERENTIAL) FUEL LEV SIG MAF SIG APP SENS 2 SIG FUEL LEVEL SENSOR FUEL PUMP, SENDER ASSEMBLY GMLAN BUS- GRY WIRE GRY/WHT WIRE HOT AT ALL TIMES IGN 1 VOLT IGNITION SWITCH INSTRUMENT PANEL CLUSTER LAN BUS + LOCK OFF LOGIC LOW REF LT BLU WIRE LT GRN WIRE MALFUNCTION INDICATOR LAMP ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PNK IGN 1 VOLT FAN RLY CTRL ENG SPD SIG WIRE PNK WIRE PNK/BLK WIRE PPL PPL LOW REF A/C REF PRES RLY COIL SUPP IAT SIG TANK PRES SIG PPL/WHT WIRE RED/WHT WIRE REQ TORQ SIG RLY COIL CTRL BATTERY + DELV TORQUE SIG RLY CTRL FAN RLY CTRL RUN WIRE SECONDARY FUEL SENDER ASSEMBLY SOUND SYSTEM SPEED STARTING/ CHARGING SYSTEM 447 1440 464 TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TC DATA SIG CLASS 2 DATA CLU RLY CTRL MIL CTRL PPL TRANSMISSION CONTROL MODULE (AT RIGHT FRONT OF ENGINE COMPT) VEHICLE SPEED SENSOR (ON LEFT REAR OF TRANSMISSION) VSS VSS SER DATA BUS MAIN RLY CTRL LOW REF LOW REF FUEL LEV SENS WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

1057 469 LOW REF LOW REF 335 877 ENG COOL FAN RLY 1 CTRL ANTI-LOCK BRAKES SYSTEM BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/WHT WIRE CMP SEN SIG ECT SEN SIG ACC VOLTAGE 410 343 COOLING FANS SYSTEM CPP SW SIG DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ENGINE COOLANT TEMPERATURE SENSOR (FRONT OF LEFT CYLINDER HEAD) FUEL INJECTORS GRN WIRE GROUND 1668 1665 GROUND 1669 1664 GRY WIRE GRY/WHT WIRE KNOCK SEN SIG 1 KNOCK SEN SIG 2 CKP SEN SIG REQUEST TORQUE SIG UART SERIAL DATA UART SERIAL DATA KNOCK SENSOR LOW OIL LEVEL SW SIG LOW REF EXTENDED TRAVEL BRAKE SW LOW REF GROUND ANTI-LOCK BRAKES SYSTEM LOW REF GROUND LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PNK PCM IGN SUPPLY PCM BAT SUPPLY LOW REF WIRE PNK WIRE PNK/BLK WIRE PPL PPL PPL 1670 1666 PPL/WHT WIRE RED/WHT WIRE RLY COIL CTRL GROUND SKIP SHIFT SOL CTRL LOW REF STARTING/ CHARGING SYSTEM TAN WIRE TAN/WHT WIRE WHT WIRE YEL WIRE YEL/BLK WIRE

A/C REFRIGERANT PRESSURE SENSOR (NEAR LEFT FRONT STRUT TOWER) ANTI-LOCK BRAKES SYSTEM BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION SENSOR CRANKSHAFT POSITION SENSOR CRUISE CONTROL SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE OIL LEVEL/TEMPER- ATURE SENSOR ENGINE OIL PRESSURE SENSOR GRY WIRE GRY/BLK WIRE GRY/WHT WIRE IGN IGN CTRL IGNITION COIL/MODULE 1 (TOP LEFT OF ENGINE) IGNITION COIL/MODULE 3 (TOP LEFT OF ENGINE) IGNITION COIL/MODULE 5 (TOP LEFT OF ENGINE) IGNITION COIL/MODULE 7 (TOP LEFT OF ENGINE) LOW REF LOW REF LOW REF PPL LOW REF PNK WIRE LT BLU WIRE LT GRN WIRE ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PLUG PLUG SPARK PNK 1 2 3 4 5 6 7 8 WIRE PNK WIRE PNK/BLK WIRE PPL PPL 3 4 PPL LOW REF SET/COAST SIG RES/ACC SIG BAS RLY SUPP IGN 1 RED WIRE RED/WHT WIRE REF LO SPARK TAN WIRE TAN/WHT WIRE UART SER DATA UART SER DATA ON/OFF SIG GND WHT WIRE YEL WIRE YEL/BLK WIRE

A/C CLUTCH RLY CTRL REVERSE INHIBIT SOL CTRL EVAP CAN VENT VALVE CTRL MIL CTRL A/C REFRIG PRESS SEN SIG ALT TERM L AIR CONDITIONING SYSTEM ANTI-LOCK BRAKES SYSTEM BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE COOLING FANS SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE FUEL LEVEL SEN SIG FUEL LEVL SEN SIG (SECOND) FUEL PUMP RLY CTRL ENG SPEED (TACH) OUT SIG FUEL TANK PRESSURE SENSOR (IN FUEL TANK) GEN FIELD DUTY SIG GROUND GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HOT AT ALL TIMES IAT SEN SIG IGN CTRL 1 IGN CTRL 7 IGN CTRL 6 IGN CTRL 4 PPL IGN IGN CTRL IGNITION COIL/ MODULE 2 (TOP RIGHT OF ENGINE) IGNITION COIL/ MODULE 8 (TOP RIGHT OF ENGINE) IGNITION SWITCH INSTRUMENT PANEL CLUSTER LOCK OFF LOGIC SS VSS SPEED IND LOW REF LOW REF ENG OIL PRESS SEN SIG CRANK VOLTAGE LOW REF LOW REF LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MAF SEN SIG MAP SEN SIG HI SPD FAN RLY CTRL EVAP CAN PURGE SOL CTRL MALFUNCTION INDICATOR LAMP OIL TEMP + ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PLUG SPARK PNK WIRE PNK/BLK WIRE PPL PPL/WHT WIRE RED WIRE RED/WHT WIRE REF LO RUN WIRE SKIP SHIFT IND SOUND SYSTEMS SPARK PLUG SS LAMP CTRL ST RLY COIL SUPPLY STARTING/ CHARGING SYSTEM TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TORQUE DELIVERED VEHICLE SPEED OUT TFT SEN SIG VSS REF LO VSS SIG HI WHT WIRE YEL WIRE YEL/BLK WIRE