Cadillac CTS I (2002-2007) lt blu 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

A/T ABS IND. B+ LOGIC LOGIC BAS FUSE BASE RELAY BLK WIRE BLK/WHT WIRE BLU WIRE BRAKE FLUID LEVEL SWITCH (ON BRAKE FLUID RESERVOIR) BRAKE FLUID PRESSURE SENSOR (5.7L) (ON REAR OF BRAKE PRESSURE MODULATOR VALVE) BRAKE IND BRANCHES FROM THE LT MAIN HARNESS) BRANCHES FROM THE MAIN HARNESS) (W/ ACTIVE BRAKE CONTROL) BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE ELECTRONIC PRNDL (EXCEPT 5.7L) GRN WIRE GROUND GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES INSTRUMENT PANEL CLUSTER (IPC) JOINT CONNECTOR LATERAL ACCELEROMETER SIG YAW RATE SENS SIGNAL LOW REFERENCE LEFT FRONT WHEEL SPEED SENSOR (WSS) LEFT REAR FUSE BLOCK (BELOW LEFT REAR SEAT) LOGIC LOGIC B+ LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE LT LT ORG/ WIRE PARK BRAKE SWITCH (ON PARK BRAKE ASSEMBLY) PPL PPL PPL 1807 1807 CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA PPL PPL 9 25 11 27 3 REAR INTEGRATION MODULE (UNDER PACKAGE SHELF TRIM PANEL) RED/WHT WIRE SPEED SENSOR (WSS) SPORT MODE STEERING WHEEL POSITION SENSOR (NEAR MIDDLE OF STEERING COLUMN) TAN WIRE TRACTION CONTROL OFF IND TRACTION CONTROL SWITCH W/ ACTIVE BRAKE CONTROL WHT WIRE WINTER MODE YEL WIRE

1807 1807 1807 PPL PPL PPL 1807 1807 PPL PPL CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA 28 1080 HORN RELAY CTRL PARK LAMP RELAY CTRL CONTROL PWR OUTPUT 5058 5059 ARMED SIGNAL ALARM ON SIGNAL BATTERY PPL 9 5 4 (IN PASSENGER COMPARTMENT, NEAR RIGHT REAR FUSE BLOCK) BATTERY GROUND BLK WIRE BLK/WHT WIRE BLU WIRE CLASS 2 SERIAL DATA ACCESSORY VOLTAGE DK BLU/WHT WIRE DK GRN WIRE DOOR OPEN DRIVER DOOR LATCH ASSEMBLY DRIVER DOOR MODULE (ON LEFT DOOR, UNDER DOOR TRIM) ECM/TCM FUSE GROUND HORNS SYSTEM EXTERIOR LIGHTS SYSTEM HOT AT ALL TIMES HOT IN ACC OR RUN HOT IN RUN OR START IGNITION KEY INTRUSION SENSOR JOINT CONNECTOR LEFT REAR DOOR LATCH ASSEMBLY LEFT REAR DOOR MODULE (UNDER DOOR TRIM PANEL) LEFT REAR FUSE BLOCK (BELOW LEFT REAR SEAT) LT BLU WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK PPL IGN 1 VOLTAGE ALARM ON SIGNAL TRUNK AJAR SWITCH SIGNAL WIRE PNK WIRE PPL CLASS 2 SERIAL DATA DOOR OPEN SWITCH SIGNAL PPL PPL PPL PPL PPL 1 2 3 4 5 6 7 READER/ EXCITER REAR INTEGRATION MODULE (UNDER PACKAGE SHELF TRIM PANEL) RED WIRE RED/WHT WIRE RIGHT REAR DOOR LATCH ASSEMBLY RIGHT REAR DOOR MODULE (ON RIGHT REAR DOOR, UNDER DOOR TRIM PANEL) RIGHT REAR FUSE BLOCK (BELOW RIGHT REAR SEAT) RIM FUSE TAN WIRE TAN/WHT WIRE THEFT DETERRENT CONTROL MODULE (AT TOP OF STEERING COLUMN) THEFT FUSE TRANSPONDER TRUNK DR REL SOL RELAY TRUNK DR RELEASE FUSE UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPT) WHT WIRE YEL WIRE YEL/BLK WIRE

AMBIENT LIGHT SENSOR SIGNAL BATTERY BLK WIRE BLK/WHT WIRE BLOWER FUSE BLOWER RELAY BRN WIRE CCP FUSE CMP CLU RELAY COMP CLUTCH FUSE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DOOR (B+) DOOR A PPL EVAPORATOR TEMPERATURE SENSOR (ON RIGHT SIDE OF EVAPORATOR CASE) GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN HVAC CONTROL MODULE (BEHIND CENTER OF DASH, BELOW RADIO) IGN 3 FUSE IGNITION 3 VOLTAGE INSIDE AIR TEMPERATURE SENSOR (BEHIND DASH, LEFT OF RADIO) JOINT CONNECTOR LEFT REAR FUSE BLOCK (BELOW LEFT REAR SEAT) LEFT SUNLOAD SENSOR SIGNAL LOW REFERENCE LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE PNK WIRE PPL PPL PPL RECIRCULATION ACTUATOR (ON HVAC MODULE, AIR INLET MOTOR LEFT OF BLOWER MOTOR) RED WIRE RED/WHT WIRE RIGHT SUNLOAD SENSOR SIGNAL RUN WIRE SOLID STATE SPLICE PACK SUNLOAD SENSOR (TOP CENTER OF I/P, ON DEFROST GRILL) TAN WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPARTMENT) VOLT WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

A/C COMPRESSOR CLUTCH A/C COMPRESSOR CLUTCH SOLENOID A/C COMPRESSOR TEMPERATURE SWITCH A/C DEF BLK WIRE BLK/RED WIRE BLOWER MOTOR (ON RIGHT SIDE OF HVAC MODULE) BLOWER MOTOR CONTROL PROCESSOR (ON LOWER LEFT SIDE OF BLOWER MOTOR) BLOWER MTR SPEED CTRL BLOWER MTR SUPPLY BLU WIRE COLD DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRIVER AIR TEMPERATURE ACTUATOR (ON HVAC MODULE) DRY AIR TEMP SIGNAL GRY WIRE GRY/BLK WIRE HOT HOT AT ALL TIMES IGNITION SWITCH LOCK OFF LOGIC LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE LT PNK WIRE MIX MOTOR 1 MIX MOTOR 2 MODE ACTUATOR MODE ACTUATOR (ON LEFT SIDE OF HVAC MODULE) MODE VALVE SIGNAL NCA WIRE PASS AIR TEMP SIGNAL PASSENGER AIR TEMPERATURE ACTUATOR (ON HVAC MODULE) PNK WIRE PPL RUN WIRE SPLICE PACK TAN WIRE WHT WIRE WHT/BLK 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

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

103 301 1538 1783 192 HEADLIGHTS SYSTEM WIPER/WASHER SYSTEM 1807 1807 COMPUTER DATA LINES SYSTEM 1970 1080 5052 1969 1483 5026 HEADLIGHTS SYSTEM 99 1717 EXTERIOR LIGHTS SYSTEM BACKLIGHT LAMPS CONTROL BATTERY BATTERY PARK LAMP RELAY CTRL BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE DIM/ ALDL FUSE DIMMING FUSE DK GRN WIRE DK GRN/WHT WIRE GRN WIRE GROUND GROUND DISTRIBUTION SYSTEM HEADLIGHTS SYSTEM HORNS SYSTEM HOT AT ALL TIMES IGNITION SWITCH INST PANEL LP DIMMER SWITCH LOCK OFF LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE PARK LAMP RELAY PNK WIRE PNK/BLK WIRE PNK/WHT WIRE POWER DISTRIBUTION SYSTEM PPL PPL PPL CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA RED WIRE RED/WHT WIRE RUN WIRE SHIFT INTERLOCK SYSTEM TAN WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPT) VOLTAGE CHECK FUSE WARNING SYSTEM WHT WIRE WIPER/WASHER SYSTEM YEL WIRE

5007 (OR 5053) A/T SHIFT LOCK CTRL SOLENOID CONTROL ANTI-LOCK BRAKES SYSTEM SEATS SYSTEM BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM COURTESY LAMP CONTROL GROUND CLASS 2 SERIAL DATA DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE GROUND GRY WIRE HOT AT ALL TIMES JOINT CONNECTOR LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE ORG/BLK WIRE PNK WIRE PNK/BLK WIRE POWER DISTRIBUTION SYSTEM PPL RAP RELAY COIL CONTROL REAR INTEGRATION MODULE (UNDER PACKAGE SHELF TRIM PANEL) RED WIRE RED/WHT WIRE REVERSE SIGNAL (OR WINTER MODE SIGNAL) RIGHT REAR FUSE BLOCK (BELOW RIGHT REAR SEAT) RIM FUSE RIM/IGN SW FUSE SEATS SYSTEM SHIFT INTERLOCK SYSTEM TAN WIRE TRANSMISSIONS SYSTEM WHT WIRE YEL WIRE

28 29 PPL BLK/WHT WIRE BLUNT CUT) BRN WIRE CMP SIG CMP SIG GEN FDC SIG CMP SOL CTRL CMP SOL CTRL CRANKSHAFT POSITION SENSOR (RIGHT SIDE OF ENGINE) DK BLU WIRE DK BLU/BLK WIRE DK GRN WIRE DK GRN/WHT WIRE ECT SIG ENGINE CONTROL MODULE (FRONT OF RIGHT VALVE COVER) FUEL INJECTORS GRY WIRE GRY/BLK WIRE GRY/WHT WIRE IC 3 CTRL CKP SENS LO IC 4 SIG CKP HI IC 6 CTRL IC 2 CTRL INJ 2 CTRL INJ 1 CTRL INJ 6 CTRL KNOCK SENSOR (BANK 1) (ON RIGHT SIDE OF ENGINE BLOCK) KNOCK SENSOR (BANK 2) (LEFT SIDE OF ENGINE) KS 1 SIG PPL LOW REF LOW REF PPL LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PNK CMP SOL CTRL CMP SOL CTRL TAC MTR CTRL WIRE PNK WIRE PNK/BLK WIRE PPL PPL/WHT WIRE STARTING/ CHARGING SYSTEM TAC MTR CTRL TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TP SIG BARO SIG WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE