Cadillac CTS II (2007-2014) logic Wiring diagrams

6.2L AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION INTERNAL MODE SWITCH (IMS) B+ VOLT BACKUP LAMP SPLY VOLT 9 8 SERIAL DATA - SERIAL DATA + BACKUP LAMP SWITCH (M/T) (RIGHT SIDE OF TRANS- MISSION) BACKUP LAMP SWITCH (M/T) (RIGHT SIDE OF TRANSMISSION) BACKUP LAMPS SPLY VOLT BCM 4 FUSE BLK WIRE BODY CONTROL MODULE (BCM) (CENTER OF DASH, COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY ENGINE CONTROL MODULE (ECM) (EXCEPT 6.2L: LEFT FRONT OF ENGINE COMPT) EXCEPT 6.2L EXCEPT 6.2L 6.2L GM LAN SER DATA BUS - SIG A GRN WIRE HOT AT ALL TIMES LEFT BACKUP LAMP LEFT TAIL LAMP LOGIC LOGIC INSIDE REARVIEW MIRROR (ISRVM) LT GRN WIRE NCA WIRE ORG/ WIRE PNK/BLK WIRE RED WIRE RIGHT BACKUP LAMP RIGHT TAIL LAMP SERIAL DATA BUS - SERIAL DATA BUS + BACKUP LAMP SW SIG SPLY VOLT TAN WIRE TAN/BLK WIRE TRANS- GM LAN MISSION SER DATA CONTROL BUS + MODULE SIG B SIG C (TCM) 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

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

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 PNK WIRE 185 1358 897 419 WIPER/WASHER SYSTEM ABS IND. AIR BAG IGN FUSE ECM/TCM IGN FUSE AIR BAG IND BATT POS VOLT IGN 1 VOLT BLK WIRE BLK/WHT WIRE BOOST GAUGE (6.2L) BRAKE IND BRN WIRE BRN/WHT WIRE CHARGE IND COMPUTER DATA LINES SYSTEM COOLANT TEMPERATURE GAUGE (EXCEPT 6.2L) CRUISE IND DISPLY FUSE DK GRN WIRE DK GRN/WHT WIRE DRIVER DOOR LATCH ASSEMBLY (DRIVER'S DOOR) DRIVER DOOR LOCK/ WINDOW SWITCH DRIVER INFORMATION CENTER (DIC) DISPLAY DRIVER INFORMATION CENTER (DIC) SWITCH ENGINE COOLANT TEMPERATURE IND FASTEN SAFETY BELT IND FRONT FOG LAMP IND FUEL LEVEL GAUGE GRY/BLK WIRE HIGH BEAM IND HOT AT ALL TIMES ILLUMINATION (4 BULBS) GROUND IND CTRL SW SIG LO REF IGN INSTRUMENT PANEL CLUSTER (IPC) LEFT REAR DOOR LATCH (LEFT REAR DOOR) LEFT TURN IND LF DOOR AJAR LOGIC LOW TIRE PRESSURE IND LT BLU/BLK WIRE MALFUNCTION IND NETWORK 1 OIL LEVEL IND PARK IND PERSONA- LIZATION PNK PNK WIRE PNK POWER DISTRIBUTION SYSTEM WIRE PNK WIRE POWER DISTRIBUTION SYSTEM PPL PPL/WHT WIRE RED WIRE RED/WHT WIRE RELAY ENERGIZED RIGHT TURN IND SECURITY IND SERIAL DATA SPEEDOMETER TACHOMETER TAN WIRE TAN/WHT WIRE TOW/HAUL IND TRACTION CONTROL OFF IND TRANSMISSIONS SYSTEM TRANSMISSIONS SYSTEM COMPUTER DATA LINES SYSTEM TRIP ODOMETER TRIP/ FUEL UP DOWN UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPT) VEHICLE INFORMATION SET/ RESET VSC IND WHT WIRE YEL WIRE

1 2 17 60 40 24 OIL PRESS SENS SIG 5-VOLT REF 1 LOW REF 15 12 14 LR DOOR AJAR SW LIFTGATE AJAR SW RR DOOR AJAR SW 1551 (OR 1500) 18 34 ENG OIL LEVEL SW SIG LOW REF 19 12 PNK 51 46 IGN 1 VOLT MIL CTRL WIRE 24 8 35 55 LOW REF ECT SENS SIG 26 25 9 44 LOW REF FUEL LEVEL SENS SIG 6.2L 6.2L EXCEPT 6.2L BATT POS VOLT BLK WIRE BLK/WHT WIRE BLU WIRE BODY CONTROL MODULE (BCM) (CENTER OF DASH, BRN WIRE BRN/WHT WIRE CLOCK COMPUTER DATA LINES SYSTEM DISPLAY DK BLU WIRE DK GRN WIRE DOOR ENGINE COMPT) ENGINE CONTROLS SYSTEM EXCEPT 6.2L EXCEPT 6.2L 6.2L FUEL LEVEL SENSOR ASSEMBLY (IN FUEL TANK) GROUND GRY WIRE HI SPD GMLAN SERIAL DATA BUS + HOT AT ALL TIMES IGN 3 VOLT LIGHTS OFF LIGHTS ON LO SPD GMLAN SERIAL DATA LOCAL INTERCONNECT NETWORK 3 LOGIC LT BLU WIRE LT BLU/BLK WIRE LT GRN/BLK WIRE NETWORK 2 ORG/ WIRE ORG/BLK WIRE PARK BRAKE SW SIG PARK BRAKE SWITCH (ON PARK BRAKE ASSEMBLY) PASSENGER DOOR LATCH ASSEMBLY (PASSENGER'S PASSENGER DOOR LOCK/ WINDOW SWITCH PNK SECONDARY FUEL LEVEL SENSOR WIRE PNK WIRE PNK/BLK WIRE POWER DISTRIBUTION SYSTEM PRIMARY FUEL LEVEL SENSOR (IN FUEL TANK) PRIMARY FUEL LEVEL SENSOR FUEL PUMP, SENDER ASSEMBLY (IN FUEL TANK) RADIO/HVAC CONTROL RDO FUSE REAR COMPARTMENT LID LATCH REAR FUSE BLOCK (RIGHT REAR OF LUGGAGE COMPT) RED WIRE RED/WHT WIRE RF DOOR AJAR RIGHT REAR DOOR LATCH (RIGHT REAR DOOR) RVC/SNSR FUSE SECONDARY FUEL LEVEL SENS SIG SECONDARY FUEL LEVEL SENSOR FUEL LEVEL SENSOR ASSEMBLY (IN FUEL TANK) TAN WIRE TAN/BLK WIRE TAN/WHT WIRE WAGON WHT WIRE YEL WIRE

BLK WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DN LEFT DR/LCK FUSE DRIVER DOOR LOCK/ WINDOW SWITCH DRIVER MEMORY SEAT ADJUSTER SWITCH DRIVER OUTSIDE REARVIEW MIRROR EXIT SWITCH FOLDING FOLDING LOGIC GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT AT ALL TIMES REAR FUSE BLOCK PDM (RIGHT REAR FUSE OF LUGGAGE COMPT) HVAC CONTROL MODULE LOGIC LOGIC DRIVER DOOR LOCK/ WINDOW SWITCH LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE MEMORY 1 SWITCH MEMORY 2 SWITCH MEMORY SEAT MODULE (MSM) (UNDER DRIVER'S SEAT) ORG/ WIRE ORG/BLK WIRE PASSENGER DOOR LOCK/ WINDOW SWITCH PASSENGER OUTSIDE REARVIEW MIRROR PPL RED/WHT WIRE RIGHT SEL LEFT SEL RIGHT SERIAL DATA W/ POWER FOLDING MIRROR WHT WIRE YEL WIRE

1 2 3 4 DRAIN WIRE COAX COAX COAX ANTI-LOCK BRAKES SYSTEM AUDIO SCREEN COMMON SIG AUDIO SIG AUDIO SIG DETECTION SIG AUDIO SIG + AUXILIARY AUDIO JACK BATT+ VOLT BLK TAN/ WIRE BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CELLULAR TELEPHONE MICROPHONE (W/ COMMUNICATION, INFOTAINMENT) CELLULAR/ NAVIGATION, DIGITAL RADIO ANTENNA CENTER HIGH MOUNTED ANTE- NNA STOP LAMP (CHMSL) COAX COAX (OR BLK) WIRE COMMON SIG COMPUTER DATA LINES SYSTEM CTRL SIG DATA BUS - DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRAIN DRAIN WIRE GM LAN GROUND GRY WIRE HAZ SW SIG LO REF LOGIC LT BLU WIRE LT GRN WIRE MICROPHINE NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK WIRE PNK/BLK WIRE PPL/DK GRN WIRE RADIO REAR WINDOW ANTENNA RADIO/HVAC CONTROL (W/ INFOTAINMENT SYSTEM 1, 2, 3 RED WIRE RED/BLK WIRE RED/WHT WIRE SEDAN SERIAL DATA SERIAL DATA HI SERIAL DATA LO SIG SIG ENABLE REMOTE TAN WIRE TRAC SW SIG W/ INFOTAINMENT SYSTEM 1, 2, 3, 5.1 W/ INFOTAINMENT SYSTEM 7, 8 W/ INFOTAINMENT SYSTEM 8, 5.1 WAGON WAKE UP SIG WHT WIRE WIRELESS COMMUNICATION INTERFACE ANTENNA BLUETOOTH YEL WIRE

1 2 3 4 DRAIN WIRE COAX COAX COAX ANTI-LOCK BRAKES SYSTEM AUDIO SCREEN COMMON SIG AUDIO SIG AUDIO SIG DETECTION SIG AUDIO SIG + AUXILIARY AUDIO JACK BATT+ VOLT BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CELLULAR TELEPHONE MICROPHONE (W/ CELLULAR/ NAVIGATION, DIGITAL RADIO ANTENNA CENTER HIGH MOUNTED ANTE- NNA STOP LAMP (CHMSL) COAX COAX (OR BLK) WIRE COMMON COMMUNICATION, INFOTAINMENT) COMPUTER DATA LINES SYSTEM CTRL SIG DATA BUS - DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRAIN DRAIN WIRE GM LAN GRN WIRE GROUND GRY WIRE HAZ SW SIG LO REF LOGIC LT BLU WIRE LT GRN WIRE NAVIGATION, TRAFFIC DATA ANTENNA (W/ INFOTAINMENT SYSTEM 7) NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK WIRE PNK/BLK WIRE PPL/DK GRN WIRE RADIO REAR WINDOW ANTENNA RADIO/HVAC CONTROL (W/ INFOTAINMENT SYSTEM 1, 2, 3 RED WIRE RED/WHT WIRE REMOTE ENABLE SIG SEDAN SERIAL DATA SERIAL DATA HI SERIAL DATA LO SIG TAN WIRE TAN/ BLK WIRE TRAC SW SIG USB W/ INFOTAINMENT SYSTEM 1, 2, 3, 5.1 W/ INFOTAINMENT SYSTEM 7, 8 W/ INFOTAINMENT SYSTEM 8, 5.1 WAGON WAKE UP SIG WHT WIRE WIRELESS COMMUNICATION INTERFACE ANTENNA BLUETOOTH YEL WIRE