Cadillac CTS II (2007-2014) left front strut tower) Wiring diagrams

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

3.0L&3.6L 3.6L, 3.0L 6.2L 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 ECT SENS SIG EMIS 2 FUSE ENGINE COOLING FAN ENGINE COOLING FAN RESISTER FAN 1 FUSE (3.6L, 3.0L) (6.2L) FAN 1 RELAY FAN 2 RELAY FAN S/P RELAY FAN-2 FUSE GRY WIRE HI SPD COOLING FAN RLY CTRL HI SPD GMLAN SERIAL DATA BUS + HOT AT ALL TIMES HOT W/ PWR/ TRN RELAY ENERGIZED HVAC CONTROL MODULE (CENTER OF DASH) INCLR FUSE LEFT COOLING FAN (LEFT SIDE OF RADIATOR) LEFT FRONT STRUT TOWER) LO REF LO SPD COOLING FAN RLY CTRL LO SPD GMLAN SERIAL DATA LT BLU WIRE PNK WIRE PNK/BLK WIRE POWER DISTRIBUTION SYSTEM RED/WHT WIRE RIGHT COOLING FAN (RIGHT SIDE OF RADIATOR) TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPT) WHT WIRE YEL WIRE

16 15 1415 1414 RF TURN SW SIG LF TURN SW SIG 19 4 B+ SERIAL DATA 4 1 5 3 1440 1540 1315 1840 B+ B+ SPLY VOLT B+ 5382 5381 5380 27 43 63 SENS RTN SENS SPLY SENS SIG A/T B+ DETECTION SIG HAZARD SW SIG PARK LAMP ON SIG 20 10 8 PPL 2144 301 BACKUP LAMPS CIRCUIT BCM 4 FUSE BCM 5 FUSE BCM 6 FUSE BLK WIRE BLK/BRN WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/YEL WIRE BODY CONTROL MODULE (BCM) (CENTER OF DASH, BRAKE PEDAL POSITION SENSOR (TOP OF BRAKE PEDAL) BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CONTROL MODULE (ECM) DISPLAY FUSE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE EXCEPT 6.2L 6.2L HAZARD SWITCH HEAD HOT AT ALL TIMES INSTRUMENT PANEL CLUSTER (IPC) LEFT LEFT BACKUP LAMP LEFT FRONT STRUT TOWER) LEFT FRONT TURN SIGNAL LAMP LEFT TAIL LAMP ASSEMBLY LEFT TAIL/STOP, TURN SIGNAL LAMP LEFT TURN IND LOGIC LOGIC RADIO/HVAC CONTROL LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE PARK AUTO OFF PPL RED/WHT WIRE RIGHT RIGHT FRONT TURN SIGNAL LAMP RIGHT TURN IND SERIAL DATA SERIAL DATA - STP LP SPLY VOLT TAN WIRE TAN/BLK WIRE TRAILER PROVISION (BLUNT CUT) (WAGON) TURN SIGNAL/ MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPT) WHT RED/ WIRE WHT WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE

1 1 (FORWARD LAMP HARNESS, NEAR RIGHT COOLING FAN CONNECTOR) BACKUP LAMPS CIRCUIT BLK WIRE BLK) (OR YEL/ WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CENTER HIGH MOUNTED STOP LAMP (CHMSL) DK BLU WIRE DK GRN WIRE HOT AT ALL TIMES LEFT FRONT MARKER LAMP LEFT FRONT PARK LAMP LEFT FRONT STRUT TOWER) LEFT LICENSE LAMP LOGIC LT BLU WIRE LT GRN WIRE LT/POS/ LP RELAY LT/POS/LP FUSE ORG/ WIRE PPL RADIO ANTENNA INDUCTOR (WAGON) REAR FUSE BLOCK (RIGHT REAR OF LUGGAGE COMPT) RIGHT BACKUP LAMP RIGHT FRONT MARKER LAMP RIGHT FRONT PARK LAMP RIGHT LICENSE LAMP RIGHT TAIL LAMP ASSEMBLY RIGHT TAIL/STOP, TURN SIGNAL LAMP RT/POS/LP FUSE TRAILER PROVISION (BLUNT CUT) (WAGON) W/ HID W/O HID W/ VARIABLE REAL TIME DAMPING W/O VARIABLE REAL TIME DAMPING WAGON WAGON SEDAN/COUPE WHT WIRE YEL WIRE

3.0L, 3.6L 6.2L BATTERY BATTERY CURRENT SENSOR BLK WIRE BRAKE FLUID LEVEL SWITCH ELECTRONIC BRAKE CONTROL MODULE (EBCM) EXCEPT 6.2L HORN ASSEMBLY I/P IGNITION COIL 1 IGNITION COIL 2 IGNITION COIL 3 IGNITION COIL 8 IGNITION IGNITION COIL 4 COIL 6 IGNITION IGNITION COIL 7 COIL 5 LEFT FRONT MARKER LAMP LEFT FRONT PARK LAMP LEFT FRONT STRUT TOWER) LEFT FRONT TURN SIGNAL LAMP NCA WIRE ORG/ WIRE W/O HID W/ HID WHT WIRE WINDSHIELD WIPER MOTOR

11 12 1137 103 LIGHT SENSOR SIG HDLMPS ON 16 11 23 RLY CTRL RLY, IND CTRL DRL SPLY VOLT 23 16 1970 233 HDLP RLY CTRL PARK BRAKE SW SIG AMBIENT LIGHT/ SUNLOAD SENSOR (TOP CENTER OF DASH) BALLAST BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (CENTER OF DASH, BRN WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRL DRL LO BEAM RELAY DRL RT FUSE DRL/LT LO BEAM FUSE FOG FOG LAMPS INDICATOR FOR REAR HEADLIGHT LEVELING SENSOR) FRONT FOG LAMP RELAY FRT FOG FUSE GMLAN SERIAL DATA HEAD HI BEAM RELAY HIGH BEAM INDICATOR HIGH BEAM SOLENOID HIGH BEAM SOLENOID BALLAST HOT AT ALL TIMES HVAC CONTROL MODULE (CENTER OF DASH) INSTRUMENT PANEL CLUSTER (IPC) LEFT DAYTIME RUNNING LAMP, LEFT FRONT FOG LAMP LEFT FRONT STRUT TOWER) LEFT HEADLAMP ASSEMBLY LINES SYSTEM COMPUTER DATA LO REF LOGIC LT DRL RELAY LT GRN/BLK WIRE LT HI BEAM FUSE OFF AUTO PARK ORG/ WIRE ORG/BLK WIRE PARK BRAKE SWITCH (ON PARK BRAKE ASSEMBLY) PNK/WHT WIRE PPL PPL LOW BEAM SPLY VOLT RIGHT DAYTIME RUNNING LAMP RIGHT FRONT FOG LAMP RIGHT HEADLAMP ASSEMBLY RT DRL RELAY RT HI BEAM FUSE RT LO LT LO BEAM BEAM FUSE FUSE SERIAL DATA TAN WIRE TURN SIGNAL/ MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPT) WHT WIRE WSW/DRL FUSE YEL WIRE

11 12 1137 103 LIGHT SENSOR SIG HDLMPS ON 16 11 RLY CTRL RLY, IND CTRL AMBIENT LIGHT/ SUNLOAD SENSOR (TOP CENTER OF DASH) BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (CENTER OF DASH, BRN WIRE COMPUTER DATA LINES SYSTEM DK GRN WIRE DK GRN/WHT WIRE DRL RELAY DRL RT FUSE FOG FOG LAMP INDICATOR FRONT FOG LAMP RELAY FRT FOG FUSE GMLAN SERIAL DATA GRY WIRE HDLP RLY CTRL HEAD HI BEAM RELAY HIGH BEAM INDICATOR HOT AT ALL TIMES HVAC CONTROL MODULE (CENTER OF DASH) INSTRUMENT PANEL CLUSTER (IPC) LEFT FRONT FOG LAMP LEFT FRONT STRUT TOWER) LEFT HIGH BEAM HEADLAMP LEFT LOW BEAM HEADLAMP LO BEAM DRL FUSE LO BEAM RELAY LO REF LOGIC LT GRN/BLK WIRE LT HI BEAM FUSE LT LO RT LO BEAM BEAM FUSE FUSE OFF AUTO PARK ORG/ WIRE ORG/BLK WIRE PARK BRAKE SW SIG PARK BRAKE SWITCH (ON PARK BRAKE ASSEMBLY) PNK/WHT WIRE PPL PPL LO BEAM SPLY VOLT RIGHT FRONT FOG LAMP RIGHT HIGH BEAM HEADLAMP RIGHT LOW BEAM HEADLAMP RT HI BEAM FUSE SERIAL DATA TAN/WHT WIRE TURN SIGNAL/ MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPT) WHT WIRE WIPER/WASHER SYSTEM YEL WIRE

BLK WIRE BODY CONTROL MODULE (BCM) (CENTER OF DASH, DK GRN WIRE HIGH NOTE HORN HORN ASSEMBLY (LEFT FRONT OF ENGINE COMPT) HORN FUSE HORN RELAY HORN RELAY CTRL HORN SWITCH HOT AT ALL TIMES INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL (TOP OF STEERING COLUMN) LEFT FRONT STRUT TOWER) LOW NOTE HORN TAN WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPT)