Cadillac CTS I (2002-2007) 5.7l Wiring diagrams

5.7L 62 13 EXTENDED TRAVEL BRAKE SW SIG REQUESTED TORQUE SIGNAL 8 11 PPL PPL CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA ABS FUSE ABS INDICATOR SIG BAS RELAY COIL SUPPLY VOLTAGE BAS RLY COIL SUPPLY VOLTAGE BLK WIRE BPP SENSOR SIGNAL BRAKE PEDAL POSITION SENSOR (NEAR TOP OF BRAKE PEDAL) BRAKE PUMP MOTOR BRN WIRE COMPUTER DATA LINES SYSTEM DELIVERED TORQUE SIGNAL DK BLU WIRE DK GRN WIRE ENGINE CONTROL MODULE (ECM) (FRONT OF RIGHT VALVE COVER) EXCEPT 5.7L GROUND HIGH EFFORT CTRL LOW EFFORT CTRL GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN RUN OR START IGN 1 RELAY LOGIC LOW REFERENCE 5 VOLT REFERENCE LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE MESSAGE CENTER MESSAGE REQUEST LOGIC NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK ABS FUSE WIRE PNK WIRE POWERTRAIN CONTROL MODULE (PCM) PPL RADIO RED/BLK WIRE REQUESTED TORQUE SIGNAL RIGHT REAR FUSE BLOCK (BELOW RIGHT REAR SEAT) SPLICE PACK TAN WIRE TAN/BLK WIRE THROTTLE ACTUATOR CONTROL (TAC) MODULE (RIGHT FRONT OF ENGINE COMPARTMENT) TRACTION CONTROL DATA SIG TRACTION CONTROL DATA SIGNAL CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA PPL PPL TRACTION SUSPENDED SERVICE SUSPENSION SYS TRANSMISSIONS SYSTEM UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPT) VARIABLE EFFORT STEERING ACTUATOR (ON POWER STEERING GEAR INPUT SHAFT) W/ SOFT RIDE SUSPENSION SYSTEM WHT WIRE YEL WIRE YEL/BLK WIRE

25 9 49 39 24 4 20 LOW REFERENCE A/C REFRIG PRESS SENSOR A/C CLUTCH RELAY CTRL 42 80 74 LOW SPEED FAN RELAY CTRL LOW REFERENCE ECT SENSOR SIGNAL 5.7L 65 33 MAIN RELAY CTRL HI SPEED FAN RELAY CTRL 7 23 LOW REFERENCE ECT SENSOR SIGNAL 80 14 43 LOW REFERENCE A/C REFRIG PRESS SENSOR A/C CLUTCH RELAY CTRL A/C REFRIGERANT PRESSURE SENSOR (NEAR THE LEFT FRONT STRUT TOWER) AMBIENT AIR TEMPERATURE SENSOR (UNDER FRONT BUMPER, NEAR FRONT GRILLE) BLK WIRE BRN WIRE COOLANT LEVEL SWITCH (IN LEFT FRONT CORNER OF COOLANT SURGE TANK) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROL MODULE (ECM) (FRONT OF RIGHT VALVE COVER) ENGINE CONTROLS SYSTEM ENGINE COOLANT LOW LEVEL EXCEPT 5.7L EXCEPT 5.7L 5.7L FEED GRY WIRE HI SPEED FAN RELAY HIGH FAN FUSE HOT AT ALL TIMES LEFT COOLING FAN (LEFT SIDE OF 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 WIRE POWERTRAIN CONTROL MODULE PPL RADIO RIGHT COOLING FAN (RIGHT SIDE OF RADIATOR) RTN S/P FAN RELAY SERIAL DATA SIG SPLICE PACK TAN WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPARTMENT) WHT WIRE YEL WIRE

14 43 80 A/C REFRIG PRESS SENS SIG A/C CLUTCH RELAY CTRL LOW REFERENCE 5.7L 9 49 25 A/C REFRIG PRESS SENS SIG A/C CLUTCH RELAY CTRL LOW REFERENCE A/C COMPRESSOR CLUTCH A/C COMPRESSOR CLUTCH SOLENOID A/C COMPRESSOR TEMPERATURE SWITCH A/C REFRIGERANT PRESSURE SENSOR (NEAR THE LEFT FRONT STRUT TOWER) BLK WIRE COMP CLUTCH FUSE COMP CLUTCH RELAY DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROL MODULE (ECM) (3.6L: FRONT OF RIGHT VALVE COVER) ENGINE CONTROLS SYSTEM EXCEPT 5.7L FEED GRY WIRE HOT AT ALL TIMES IGNITION SWITCH LOCK OFF NCA WIRE ORG/BLK WIRE PNK WIRE POWERTRAIN CONTROL MODULE (PCM) RETURN RUN WIRE SIG SPLICE PACK TAN WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPARTMENT)

1807 1807 PPL PPL 22 23 CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA 1807 1807 PPL PPL CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA 20 21 2500 2501 H SPEED GMLAN DATA BUS + H SPEED GMLAN DATA BUS - 24 PPL 26 PPL 25 PPL 3 2 5 1 6 4 PPL PPL PPL PPL PPL PPL 33 32 2501 2500 H SPEED GMLAN DATA BUS - H SPEED GMLAN DATA BUS + 5.7L A/T EXCEPT 5.7L AUDIO AMPLIFIER (LEFT SIDE OF TRUNK) BASE BLK WIRE BLK/WHT WIRE CLASS 2 SERIAL DATA LEFT HEADLAMP CLASS 2 SERIAL DATA RIGHT HEADLAMP DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) DIGITAL RADIO RECEIVER (LEFT SIDE OF REAR PACKAGE SHELF) DIM/ALDL FUSE DRIVER DOOR MODULE (ON LEFT DOOR, UNDER DOOR TRIM) DRIVER DOOR SWITCH ASSEMBLY (DDSA) DRIVER'S MEMORY SEAT MODULE (UNDER DRIVER'S SEAT) ELECTRONIC BRAKE CONTROL MODULE (EBCM) (AT RIGHT FRONT CORNER OF ENGINE COMPT) ENGINE CONTROL MODULE (ECM) (FRONT OF RIGHT VALVE COVER) EXCEPT 5.7L EXCEPT 5.7L PPL FRONT PASSENGER DOOR MODULE (ON RIGHT FRONT DOOR, UNDER DOOR TRIM PANEL) HOT AT ALL TIMES HVAC CONTROL MODULE (BEHIND CENTER OF DASH, BELOW RADIO) INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (UNDER CENTER CONSOLE) INSTRUMENT PANEL CLUSTER (IPC) LEFT REAR DOOR MODULE (UNDER DOOR TRIM PANEL) LT GRN WIRE LUXURY POWERTRAIN CONTROL MODULE PPL PPL CLASS 2 SERIAL DATA PPL PPL 1807 1807 11 8 CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA PPL PPL 1807 1807 25 9 CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA PPL PPL 1807 1807 CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA PPL PPL 59 58 1807 1807 CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA PPL PPL CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA PPL PPL PPL PPL PPL PPL PPL PPL RADIO RADIO ANTENNA MODULE (ABOVE HEADLINER, NEAR REAR WINDOW) REAR INTEGRATION MODULE (RIM) (UNDER PACKAGE SHELF TRIM PANEL) RED WIRE RED/WHT WIRE RIGHT REAR DOOR MODULE (ON RIGHT REAR DOOR, UNDER DOOR TRIM PANEL) THEFT DETERRENT CONTROL MODULE (AT TOP OF STEERING COLUMN) TRANSMISSION CONTROL MODULE (TCM) (AT RIGHT FRONT OF ENGINE COMPT) TV ANTENNA MODULE UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPT) W/ AUTOMATIC HEADLAMPS CONTROL LEVELING SYSTEM WHT WIRE WHT/BLK WIRE

24 4 20 MAIN RELAY CTRL HIGH SPEED FAN RELAY CTRL LOW SPEED FAN RELAY CTRL 2761 (OR 470) 410 42 80 74 LOW SPEED FAN RELAY CTRL LOW REFERENCE ECT SENSOR SIGNAL 5.7L 65 33 MAIN RELAY CTRL HIGH SPEED FAN RELAY CTRL 7 23 LOW REFERENCE ECT SENSOR SIGNAL BLK WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM COOLANT LEVEL SWITCH (IN LEFT FRONT CORNER OF COOLANT SURGE TANK) DK BLU WIRE DK GRN WIRE ENGINE CONTROL MODULE (ECM) (FRONT OF RIGHT VALVE COVER) ENGINE COOLANT LOW LEVEL EXCEPT 5.7L GRY WIRE HI FAN FUSE HI SPEED FAN RELAY HOT AT ALL TIMES HVAC CONTROL MODULE (BEHIND CENTER OF DASH, BELOW RADIO) LEFT COOLING FAN (LEFT SIDE OF RADIATOR) LO SPEED FAN RELAY LOGIC LOW FAN FUSE LT BLU WIRE LT GRN WIRE MAIN RELAY MESSAGE CENTER POWERTRAIN CONTROL MODULE (PCM) PPL PPL PPL SERIAL DATA SERIAL DATA COOLANT LEVEL SW RADIO RIGHT COOLING FAN (RIGHT SIDE OF RADIATOR) S/P FAN RELAY SERIAL DATA TAN WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPARTMENT) WHT WIRE YEL WIRE

5.7L BLK WIRE BLK/WHT WIRE DASH INTEGRATION MODULE (DIM) DATA LINK CONNECTOR (DLC) DRIVER DOOR MODULE (DDM) DRIVER HEATED SEAT MODULE DRIVER SEAT ADJUSTER SWITCH EXCEPT 5.7L FRONT PASSENGER HEATED SEAT MODULE HAZARD SWITCH IGNITION KEY ALARM SWITCH INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL INSTRUMENT PANEL CLUSTER (IPC) LEFT REAR DOOR MODULE (LRDM) LEFT STEERING WHEEL CONTROLS LRDM) LT GRN WIRE MEMORY SEAT MODULE (MSM) MSM CONNECTOR) PASSENGER LUMBAR ADJUSTER SWITCH PASSENGER SEAT ADJUSTER SWITCH REAR FUSE BLOCK RIGHT STEERING WHEEL CONTROLS SWITCH CONNECTOR THEFT DETERRENT CONTROL MODULE TRACTION CONTROL SWITCH TURN SIGNAL/ HAZARD FLASHER MODULE TURN SIGNAL/ MULTI-FUNCTION SWITCH W/ 8-WAY ADJUSTER POWER PASSENGER SEAT W/ 8-WAY ADJUSTER POWER PASSENGER SEAT, FRONT HEATER SEAT W/ MEMORY SEAT W/ POWER LUMBAR CONTROL SEAT W/O MEMORY SEAT W/O POWER LUMBAR CONTROL SEAT WHT 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

3.2L/3.6L 5.7L BACKLIGHT LAMPS CTRL BATTERY BATTERY GROUND BACKLIGHT LAMPS CTRL GROUND BLK WIRE BLK/WHT WIRE BLU WIRE COMPUTER DATA LINES SYSTEM DIMMING FUSE FRONT PASSENGER DOOR LOCK SWITCH FRONT PASSENGER DOOR MODULE (ON RIGHT FRONT DOOR, UNDER DOOR TRIM PANEL) FRONT PASSENGER WINDOW SWITCH FUSE BLOCK (STEERING COLUMN) (TAPED TO STEERING COLUMN HARNESS) GROUND HAZARD SWITCH ILLUMI- NATION LAMP LEFT REAR DOOR MODULE (UNDER DOOR TRIM PANEL) LEFT REAR WINDOW SWITCH LEFT STEERING WHEEL CONTROLS PPL PPL SERIAL DATA RED/WHT WIRE RIGHT REAR DOOR MODULE (ON RIGHT REAR DOOR, UNDER DOOR TRIM PANEL) RIGHT REAR WINDOW SWITCH RIGHT STEERING WHEEL CONTROLS SERIAL DATA WHEEL MODULE WHT WIRE YEL WIRE

5.7L 5.7L (IN ENGINE HARNESS, 14 CM FROM ECT SENSOR CONNECTOR) A/T BANK 1 SENSOR 2 BANK 2 SENSOR 2 BATTERY BLK WIRE BLOWER FUSE BLOWER RELAY BRN WIRE CCP FUSE DASH INTEGRATION MODULE (DIM) DATA LINK CONNECTOR (DLC) DIM/ ALDL FUSE ECM FUSE (DIAGRAM 3 OF 7) ECM/TCM FUSE ENGINE CONTROL MODULE (ECM) EVAPORATIVE EMISSIONS (EVAP) CANISTER PURGE SOLENOID VALVE EXCEPT 5.7L FLASHER FUSE FUEL INJECTOR 1 FUEL INJECTOR 3 FUEL INJECTOR 5 FUEL INJECTOR 7 FUEL INJECTOR 3 FUEL INJECTOR 5 FUSIBLE LINK GENERATOR HI FAN FUSE HI SPEED FAN RELAY HVAC CONTROL MODULE IGNITION COIL 1 IGNITION COIL 3 IGNITION COIL 5 FUEL INJECTOR 1 INSTRUMENT PANEL CLUSTER (IPC) LOW FAN FUSE LOW SPEED FAN RELAY MAIN RELAY ODD INJ/ COIL FUSE ORG/ WIRE PNK PNK PNK PNK PNK WIRE PNK PNK PNK PNK WIRE PNK PNK PNK WIRE PNK WIRE PNK/ PNK/ EXCEPT 5.7L 5.7L WIRE PNK/BLK WIRE POST 2 FUSE POWERTRAIN CONTROL MODULE (PCM) RED WIRE RED/WHT WIRE REVERSE LOCK OUT SOLENOID S/P FAN RELAY SKIP SHIFT SOLENOID SPARE FUSE STARTER THEFT DETERRENT CONTROL MODULE TO UNDERHOOD FUSE BLOCK (HORN RELAY) (DIAGRAM 2 OF 7) TO UNDERHOOD FUSE BLOCK (PRE 2/CAM TOS FUSE TRAILER PROVISIONS TRANSMISSION CONTROL MODULE (TCM) TURN SIGNAL/ HAZARD FLASHER MODULE VEHICLE SPEED SENSOR (VSS) VOLT CHECK FUSE WHT WIRE