Cadillac CTS II (2007-2014) lt blu Wiring diagrams

16 17 DATA BUS+ DATA BUS- 21 22 DATA BUS - DATA BUS + 6 7 DATA BUS - DATA BUS + 8 9 DATA BUS (+) DATA BUS (-) ACC WAKE-UP SER DATA BODY CONTROL MODULE (BCM) (CENTER OF DASH, COM ENABLE SERIAL DATA COUPE, SEDAN DATA BUS - DATA BUS - DATA BUS+ DATA BUS+ DATA BUS- DATA BUS- DATA LINK RESISTOR (LEFT SIDE OF LUGGAGE COMPT) DK BLU WIRE DK GRN WIRE ELECTRONIC SUSPENSION CONTROL (ESC) EXCEPT AWD EXCEPT AWD, W/O PEDESTRIAN PROTECTION, ONSTAR W/ PEDESTRIAN PROTECTION FUEL PUMP FLOW CONTROL MODULE (RIGHT REAR OF LUGGAGE COMPT) FUEL SYSTEM CONTROL MODULE LO SPD GMLAN SERIAL DATA LOCAL INTERCONNECT NETWORK 3 LT BLU WIRE MODULE (LEFT SIDE OF LUGGAGE COMPT) PARKING BRAKE CONTROL MODULE SEAT) SEDAN, COUPE SERIAL DATA COM ENABLE TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPT) W/ ELECTRONIC PARKING BRAKE W/ HIGH INTENSITY DISCHARGE W/ ONSTAR W/O ELECTRONIC PARKING BRAKE W/O PEDESTRIAN PROTECTION WAGON

53 33 39 40 SERIAL DATA + SERIAL DATA - 6.2L 3.0L, 3.6L 66 67 VSS LO SIG VSS HI SIG PPL BATT VOLT GROUND BLK/WHT WIRE BODY CONTROL MODULE (BCM) (CENTER OF DASH, BRN WIRE COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY AUTOMATIC TRANSMISSION DATA BUS+ DATA BUS+ DATA BUS- DATA BUS- DK GRN/WHT WIRE FRONT UPPER BEAM PEDESTRIAN IMPACT DETECTION SENSOR GRY WIRE HI SPD GMLAN SERIAL DATA BUS + HOOD HI REF HOOD LO REF HOOD LO REF HOOD HI REF PPL HOT AT ALL TIMES UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPT) HOT W/ PWR/TRN RELAY ENERGIZED LEFT ACTIVE HOOD HINGE ACTUATOR LO REF LT BLU WIRE MODULE SIG ORG/ WIRE PED PRO FUSE PEDESTRIAN IMPACT DETECTION MODULE PNK WIRE PPL PPL/WHT WIRE REAR UPPER BEAM PEDESTRIAN IMPACT DETECTION SENSOR RED/WHT WIRE RIGHT ACTIVE HOOD HINGE ACTUATOR SENSOR SIG SENSOR SIG LO REF SENSOR SIG MODULE SIG SERIAL DATA SENSOR SIG SENSOR LO REF SHORTING BAR TAN WIRE TAN/BLK WIRE TOSS/BRK VAC RLY FUSE TRANSMISSION CONTROL MODULE (TCM) VEHICLE SPEED SENSOR (6.2L M/T) VEHICLE SPEED SENSOR (EXCEPT 6.2L M/T) (LEFT REAR OF TRANSMISSION) VSS HIGH SIG VSS HIGH SIG GND BATT+ VOLT 2 3 WHT WIRE YEL WIRE

14 15 16 17 18 19 20 21 22 23 24 25 VARIABLE EFFORT STEERING ACTR CTRL 26 27 28 29 30 31 32 33 34 35 36 37 38 VARIABLE EFFORT STEERING ACTR SPLY VOLT 5-VOLT REF VEHICLE SPEED SIGNAL CAN BUS HIGH SERIAL DATA AUXILIARY BRAKE BOOSTER PUMP BATTERY POSITIVE VOLTAGE BLK WIRE BRAKE BOOSTER VACUUM SENSOR SIG BRAKE BOOSTER PUMP RLY CTRL BRAKE PRESSURE MODULATOR VALVE BRK VAC PUMP FUSE (EXCEPT 6.2L) BRN WIRE CAN BUS CAN BUS IGN HIGH LOW CAN BUS HIGH CAN BUS IGN LOW CAN BUS LOW SERIAL DATA COMPUTER DATA LINES SYSTEM DISPLY FUSE DK GRN WIRE DK GRN/WHT WIRE ELECTRONIC BRAKE CONTROL MODULE (EBCM) (RIGHT FRONT CORNER OF ENGINE COMPT) GMLAN SERIAL DATA BUS+ GMLAN SERIAL DATA BUS+ BATTERY POSITIVE VOLTAGE GMLAN SERIAL DATA BUS- GMLAN SERIAL DATA BUS- GND GRN WIRE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT AT ALL TIMES UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPT) ABS HOT W/ IGN 1 RELAY ENERGIZED LEFT FRONT WHEEL SPEED SENSOR (WSS) (LEFT FRONT WHEEL HUB ASSEMBLY) LH FRT WHEEL SPD SENS SIG LH FRT WHEEL SPD SENS SIG LH RR WHEEL SPD SENS SIG RH FRT WHEEL SPD SENS SIG LOW REF RH FRT WHEEL SPD SENS SIG 12 VOLT REF 12 VOLT REF LT BLU WIRE LT GRN/BLK WIRE NCA WIRE ORG/ WIRE POWER DISTRIBUTION SYSTEM RED WIRE RED/BLK WIRE RED/WHT WIRE RH RR WHEEL SPD SENS SIG RIGHT REAR WHEEL SPEED SENSOR (WSS) (RIGHT REAR WHEEL HUB ASSEMBLY) SERIAL DATA COMMUNICATION ENABLE STEERING WHEEL POSITION SENSOR (TOP OF STEERING COLUMN) TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TOSS/BRK ABS VAC RELAY FUSE (EXCEPT 6.2L) MTR FUSE FUSE WHT WIRE YAW RATE-LATERAL ACCELERATION SENSOR (UNDER CENTER CONSOLE) YEL WIRE YEL/BLK WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 TEMP DR CTRL RIGHT AIR TEMP 1 2 BLWR MTR SPLY VOLT GND 1 2 SENS SIG SENS SIG AIR QUALITY SENSOR (RIGHT RADIATOR SUPPORT) AUTO SWITCH BLK WIRE BLK/WHT WIRE BLOWER MOTOR (RIGHT SIDE OF HVAC MODULE) BLOWER MOTOR CONTROL MODULE (LOWER LEFT SIDE OF BLOWER MOTOR) BLOWER MOTOR SWITCH LO BLWR FUSE BLWR MTR SPD CTRL BODY CONTROL MODULE (BCM) (CENTER OF DASH, BRN WIRE COMPUTER DATA LINES SYSTEM DEFOGGER SYSTEM DISPLY FUSE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DR SIG DRIVER AIR TEMPERATURE ACTUATOR (LEFT SIDE OF HVAC MODULE) EVAPORATOR TEMPERATURE SENSOR (RIGHT SIDE OF EVAPORATOR CASE) GND BATT POS VOLT GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT W/ IGNITION 1 RELAY ENERGIZED HVAC CONTROL MODULE (CENTER OF DASH) IGN 3 VOLT ISRVM FUSE LO LEFT AIR TEMPERATURE SWITCH LO MODE SWITCH LO RIGHT AIR TEMPERATURE SWITCH LOGIC LT BLU WIRE LT BLU/BLK WIRE LT GRN/BLK WIRE MODE ACTUATOR (LEFT SIDE OF HVAC MODULE) ORG/ WIRE PASSENGER AIR TEMPERATURE ACTUATOR (RIGHT SIDE OF HVAC MODULE) PNK WIRE POS SIG DEFOGGER SWITCH 5 6 7 8 9 10 11 12 13 14 15 16 17 18 POWER DISTRIBUTION SYSTEM PPL PPL/WHT WIRE RADIO/HVAC CONTROL RECIRCULATION ACTUATOR (RIGHT SIDE OF HVAC MODULE) RECIRCULATION SWITCH RED/BLK WIRE RED/WHT WIRE RLY CTRL LO SPD GMLAN IGN 3 VOLT GND LO REF SENS SIG SENS SIG SPD SIG LO SPD GMLAN BATT POS VOLT UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPT) W/SPO W/O SPO DVD DVD WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE YEL/DK GRN WIRE YEL/RED WIRE

3.6L, 3.0L 3.6L, 6.2L 3.0L 5-VOLT REF 5-VOLT REF 1 6.2L 6.2L 3.0L, 3.6L A/C CMPRSR CLTCH RELAY A/C COMPRESSOR CLUTCH RLY CTRL A/C REFRIGERANT PRESS SENS SIG A/C REFRIGERANT PRESSURE SENSOR (ON A/C AC CLTCH FUSE BLK WIRE CHARGE AIR COOLER (CAC) COOLANT PUMP CHARGE AIR COOLER (CAC) COOLANT PUMP RELAY (6.2L) CHARGE AIR COOLER COOLANT PUMP CTRL COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECT SENS SIG EMIS 2 FUSE ENGINE COOLING FAN ENGINE COOLING FAN RESISTOR FAN 1 FUSE (3.6L, 3.0L) (6.2L) FAN 1 RELAY FAN 2 RELAY FAN S/P RELAY GRY (OR BLK) WIRE GRY WIRE HI SPD COOLING FAN RLY CTRL HI SPD GMLAN SERIAL DATA BUS + HOT AT ALL TIMES HOT AT ALL TIMES FAN 2 FUSE HOT W/ PWR/ TRN RELAY ENERGIZED INCLR FUSE LEFT ENGINE COOLING FAN (LEFT SIDE OF RADIATOR) LEFT FRONT STRUT TOWER) LO REF LO SPD COOLING FAN RLY CTRL LT BLU WIRE LT BLU/BLK WIRE LT GRN/BLK WIRE ORG/BLK WIRE PNK WIRE PNK/BLK WIRE POWER DISTRIBUTION SYSTEM RED/WHT WIRE REFRIGERANT LINE) RIGHT ENGINE COOLING FAN (RIGHT SIDE OF RADIATOR) SUNLOAD SENSOR (TOP CENTER OF DASH) TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPT) WHT WIRE YEL WIRE

1 2 COURTESY LAMPS SPLY VOLT BATTERY POSITIVE VOLT 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 I/P DIMMER SW SIG BLK WIRE BLK/BRN WIRE BLK/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (BCM) (CENTER OF DASH, BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM COURTESY LAMP RLY CTRL COURTESY LAMPS SW ON SIG CRUISE CONTROL SYSTEM CRUISE CONTROL, SOUND SYSTEMS CRUISE CTRL IND DIMMING SIG DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE EXTERIOR LIGHTS SYSTEM ANTI-LOCK BRAKES SYSTEM SHIFT INTERLOCK SYSTEM GRN/WHT WIRE GRY WIRE GRY/BLK WIRE HAZARD SW SIG DRL AMBIENT LIGHT SENS SIG AUTOMATIC HEADLAMP RLY CTRL HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM WIPER/WASHER SYSTEM HEADLIGHTS SYSTEM SHIFT INTERLOCK SYSTEM HOT AT ALL TIMES IC 2 CTRL IGNITION SWITCH INTERIOR LIGHTS SYSTEM COMPUTER DATA LINES SYSTEM LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE OFF ORG/ WIRE ORG/WHT WIRE PARK LAMP SW ON SIG PNK WIRE PNK/BLK WIRE POWER WINDOWS SYSTEM POWER WINDOWS SYSTEM 1307 5060 PPL PPL PPL PPL/WHT WIRE PWR WIND MASTER SW LKOUT SIG LOW SPD GMLAN SERIAL DATA PWR WIND MASTER SW RR UP SIG PWR WIND MASTER SW LR DN SIG PPL RED/WHT WIRE RR FOG LP SW SIG RUN WIRE SHIFT POSITION SIG TAN WIRE TAN/BLK WIRE TRANSMISSION SYSTEM WIPER/ WASHER SYSTEM TRANSMISSIONS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM W/O REMOTE START WHT WIRE WHT/BLK WIRE WIPER/WASHER SYSTEM SOUND SYSTEMS YEL WIRE

1317 319 318 482 2268 1969 5531 481 HEADLIGHTS SYSTEM 18 19 EXTERIOR LIGHTS SYSTEM 1970 45 HEADLIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM 690 24 INTERIOR LIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM BCM 1 BCM 4 FUSE FUSE FUSE FUSE FUSE BCM 2 BCM 3 BCM 5 BCM 6, 7 FUSE BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (CENTER OF DASH, BRN WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DOOR LOCKS SYSTEM DRL SPLY VOLT GND BATTERY POSITIVE VOLT FOG LAMP RLY CTRL GRY WIRE GRY/BLK WIRE HDLP RLY CTRL PARK LAMP SPLY VOLT HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM ANTI-THEFT SYSTEM HOT AT ALL TIMES LIFTGATE AJAR SW SIG LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE ORG/BLK WIRE PNK WIRE PNK/BLK WIRE PNK/WHT WIRE POWER DISTRIBUTION SYSTEM PPL REAR FUSE BLOCK (RIGHT REAR OF LUGGAGE COMPT) RED WIRE RED/WHT WIRE RH TRAILER TURN SIG RLY CTRL LH TRAILER TURN SIG RLY CTRL RR DOOR AJAR SW SIG LR DOOR AJAR SW SIG LR DOOR OPEN SW SIG RR FOG LP RLY CTRL IGN 1 VOLT PNK WIRE RVC/SNSR FUSE STARTING/CHARGING SYSTEM TAN WIRE TRUNK, TAILGATE, FUEL DOORS, DOOR LOCKS SYSTEMS UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPT) WHT WIRE WIPER/WASHER SYSTEM YEL WIRE

15 18 24 HOOD AJAR SW HORN RLY CTRL PARK LP SPLY 16 15 14 12 LR DOOR OPEN SW LR DOOR AJAR SW RR DOOR AJAR SW LIFTGATE AJAR SW 18 19 PPL 5714 5709 5713 ANTENNA LOW ANTENNA SIG ANTENNA LOW PNK WIRE 8 9 DATA BUS (+) DATA BUS (-) 80 3440 DISTRIBUTION SYSTEM 9 7 DRV DOOR UNLCK DRV DOOR UNLCK ANTENNA SIG BLK WIRE BLK/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM COUPE DISPLY FUSE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DOOR HANDLE KEYLESS ENTRY ANTENNA DRIVER DOOR HANDLE SWITCH (SEDAN/WAGON) FUEL DOOR RELEASE ACTUATOR (W/ REMOTE CONTROL) (RIGHT REAR OF LUGGAGE COMPT) GRY WIRE HEADLINER KEYLESS ENTRY ANTENNA (WAGON) (CENTER REAR OF ROOF) HOOD AJAR SWITCH (W/ REMOTE START) HORNS SYSTEM EXTERIOR LIGHTS SYSTEM HOT AT ALL TIMES IGNITION SW SIG B+ LEFT KEYLESS ENTRY ANTENNA LEFT REAR DOOR HANDLE SWITCH (SEDAN/WAGON) LEFT REAR DOOR LATCH (SEDAN/WAGON) (LEFT REAR DOOR) LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK PASS SW SIG RELEASE CTRL DRV SW SIG GND (OR 5797) 5882 1051 WIRE PNK WIRE PNK/BLK WIRE POWER POWER DISTRIBUTION SYSTEM PPL PPL HOOD SW SIG PPL/WHT WIRE REAR COMPARTMENT KEYLESS ENTRY ANTENNA REAR COMPARTMENT LID LATCH REAR FUSE BLOCK (RIGHT REAR OF LUGGAGE COMPT) RED/WHT WIRE RIGHT REAR DOOR HANDLE SWITCH (SEDAN/WAGON) RIGHT REAR DOOR LATCH (SEDAN/WAGON) (RIGHT REAR DOOR) RKE/PASS KEY/MDL FUSE RR DR HANDLE SW LR DR HANDLE SW SHIFT POS SIG SEDAN SEDAN, WAGON, COUPE SEDAN/WAGON SERIAL DATA SHIFT INTERLOCK SYSTEM TAN WIRE TAN/BLK WIRE TRUNK, TAILGATE, FUEL DOORS SYSTEM UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPT) WHT WIRE YEL WIRE YEL/BLK WIRE

18 19 PPL BLK WIRE BLK/WHT WIRE BRN WIRE CENTER CONSOLE ACTIVE KEYLESS ENTRY ANTENNA (W/ KEYLESS ENTRY) CENTER CONSOLE PASSIVE KEYLESS ENTRY ANTENNA (UNDER FLOOR CONSOLE) COMPUTER DATA LINES SYSTEM COUPE DATA SIG DK BLU WIRE DK GRN WIRE DRIVER EXTERIOR DOOR HANDLE SWITCH DRIVER INFORMATION 4 5 19 17 CENTER (DIC) DISPLAY DRIVER INTERIOR DOOR HANDLE SWITCH GRY WIRE GRY/BLK WIRE INSTRUMENT PANEL CLUSTER (IPC) LOCK SIG LOGIC SECURITY IND LOW REF LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE ORG/ WIRE ORG/BLK WIRE PASSENGER DOOR CONTROL MODULE (COUPE) PASSENGER EXTERIOR DOOR HANDLE SWITCH PASSENGER INTERIOR HANDLE SWITCH PNK WIRE PPL PPL/WHT WIRE RED/WHT WIRE RIGHT KEYLESS ENTRY ANTENNA SEDAN WAGON SPLY VOLT TAN WIRE W/O W/ PASSIVE PASSIVE ENTRY ENTRY YEL WIRE YEL/BLK WIRE

1491 6190 51 PNK WIRE 2 9 5881 901 LF DOOR HANDLE IC 2 CTRL 2 9 RF DOOR HANDLE IC 2 CTRL 3 7 8 9 11 10 13 15 NETWORK 2 DOOR LCK DOOR LATCH SERIAL DATA 6 4 GND B+ 7 1 3 BACKLIGHT LP RELEASE SIG GND BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE COAX COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM INTERIOR COUPE DK BLU WIRE DK GRN WIRE DR/LCK FUSE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES KEYLESS ENTRY ANTENNA LF DOOR HANDLE LIGHTS SYSTEM LOCK LOGIC DRIVER DOOR LOCK/ WINDOW SWITCH LOGIC PASSENGER DOOR LOCK/ WINDOW SWITCH LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PASSENGER DOOR HANDLE SWITCH (SEDAN/WAGON) PASSENGER DOOR LATCH (PASSENGER'S DOOR) PDM FUSE PNK ENTRY WIRE PNK RF DOOR HANDLE WIRE PNK W/O PASSIVE ENTRY WIRE PNK WIRE REAR FUSE BLOCK (RIGHT REAR OF LUGGAGE COMPT) RED/WHT WIRE REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) (W/O PASSIVE ENTRY) RF DR SW SIG COURTESY LP HI RF DOOR AJAR COURTESY LP LO RIGHT FRONT DOOR HANDLE SEDAN/WAGON TAN WIRE TAN/WHT WIRE TRUNK, TAILGATE, FUEL DOORS SYSTEM UNLOCK UNLOCK 6 4 GND B+ W/ DELUXE INTERIOR LAMP PACKAGE W/ PASSIVE W/ PASSIVE ENTRY W/O PASSIVE ENTRY W/O PASSIVE ENTRY W/O PASSIVE PNK ENTRY PNK PNK W/ PASSIVE ENTRY WIRE WHT RED/ WIRE WHT WIRE YEL WIRE YEL/BLK WIRE