Cadillac ATS I (2012-2014) (above left headlight) Wiring diagrams

1 2 3 4 ACTR RTN ACTR TRANSMIT SIG ACTR RECEIVE SIG ACTR SPLY VOLT 1 2 4 DR LOCK CTRL DR LOCK CTRL (2) ACTR UNLOCK CTRL 2 3 19 15 4 GROUND BAT POS VOLT SW LOCK SIG SW UNLOCK SIG B+ 2.0L 24 20 HOOD STATUS B SIG B+ 25 24 GMLAN SERIAL DATA (+) GMLAN SERIAL DATA (-) 2500 2501 COMPUTER DATA LINES SYSTEM 27 16 ACTR TRANSMIT SIG ACTR RETURN 3 18 13 19 B+ HEAD LP HIGH RLY CTRL HEAD LP LOW RLY CTRL HORN RLY CTRL 309 709 EXTERIOR LIGHTS SYSTEM 5 21 IND DIM CTRL SCTY IND CTRL 5 6 RH PARK LP SPLY VOLT LH PARK LP SPLY VOLT ACTR RECEIVE SIG ACTR SPLY VOLT ANTENNA (UPPER PART OF REAR WINDOW) BCM 5 FUSE BLK WIRE BLK/GRN WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/VIO WIRE BLU/WHT WIRE BODY CONTROL MODULE (BEHIND GLOVE BOX) BRN WIRE BRN/GRN WIRE BRN/PPL WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE COAX OG RFR COMPUTER DATA LINES SYSTEM DRIVER DOOR LATCH ASSEMBLY DRIVER WINDOW MOTOR ENGINE CONTROL MODULE (RIGHT FRONT OF ENGINE COMPT) FM/RFR GRN WIRE GRY WIRE GRY/BLK WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/WHT WIRE HEADLIGHTS SYSTEM HORNS SYSTEM HOOD STATUS A SIGNAL HOT AT ALL TIMES HOT AT ALL TIMES UNDERHOOD FUSE BLOCK BCM 7 (RIGHT FRONT OF FUSE ENGINE COMPT) HOT W/ IGNITION MAIN RELAY ENERGIZED AOS DISPLAY/ MIL IGN FUSE LEFT REAR SIG LF DR AJAR SW SIG LOGIC NCA WIRE OG COAX RADIO ANTENNA AMPLIFIER REAR RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/YEL WIRE REMOTE CONTROL DOOR LOCK RECEIVER (RIGHT REAR SIDE OF REAR WINDOW SHELF) RFR SCTY LOCK RLY CTRL SENS LOW REF HOOD LATCH SERIAL DATA VIO/GRY WIRE VIO/YEL WIRE W/ START/STOP SYSTEM W/O START/STOP SYSTEM WHT WIRE WHT/VIO WIRE YEL BLK/ WIRE YEL WIRE YEL/GRN WIRE YEL/VIO WIRE

2.0L 39 40 SERIAL DATA (+) SERIAL DATA (-) AMBIENT LIGHT/SUNLOAD SENSOR (UPPER CENTER OF THE INSTRUMENT PANEL) BLK WIRE BLK/GRN WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/WHT WIRE BRN WIRE BRN/GRN WIRE BRN/YEL WIRE CHILD SECURITY LOCK DISABLE RELAY COMPUTER DATA LINES SYSTEM DOOR DEAD LOCK RELAY ENGINE CONTROL MODULE (RIGHT FRONT OF ENGINE COMPT) GRN WIRE GRY WIRE GRY/BLK WIRE GRY/GRN WIRE HOOD LATCH SNSR LOW REF HOOD STATUS A SIGNAL HOT W/ BATTERY SAVER RELAY 2 ENERGIZED HVAC CONTROL MODULE (NEAR RIGHT KICK PANEL) LOGIC RIGHT REAR WINDOW SWITCH NCA WIRE REAR COMPARTMENT FUSE BLOCK (LEFT SIDE OF LUGGAGE COMPT) RED/BLU WIRE RIGHT REAR DOOR LATCH ASSEMBLY RR DR AJAR SW SIG THEFT MDL/ UGDO/RAIN SNSR FUSE VIO/YEL WIRE W/ START/STOP SYSTEM W/O START/STOP SYSTEM WHT WIRE WHT/BLU WIRE WIRE CHANNEL UNDER LEFT SIDE OF REAR SEAT) YEL WIRE

2.0L A SIGNAL ACTR RECEIVE SIG ACTR RETURN ACTR RTN ACTR SPLY VOLT ACTR TRANSMIT SIG ACTR UNLOCK CTRL AMBIENT LIGHT/SUNLOAD SENSOR ANTENNA AOS DISPLAY/ MIL IGN FUSE BAT POS VOLT BCM 5 FUSE BCM 7 FUSE BLK WIRE BLK/GRN WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/VIO WIRE BLU/WHT WIRE BODY CONTROL MODULE (BEHIND GLOVE BOX) BRN WIRE BRN/GRN WIRE BRN/PPL WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE COAX COMPUTER DATA LINES SYSTEM DR LOCK CTRL DR LOCK CTRL (2) DRIVER DOOR LATCH ASSEMBLY DRIVER WINDOW MOTOR ENGINE CONTROL MODULE FM/RFR GMLAN SERIAL DATA GRN WIRE GROUND GRY WIRE GRY/BLK WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/WHT WIRE HEAD LP HIGH RLY CTRL HEAD LP LOW RLY CTRL HEADLIGHTS SYSTEM HOOD LATCH HOOD STATUS HOOD STATUS B SIG HORN RLY CTRL HORNS SYSTEM HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED HVAC CONTROL MODULE IND DIM CTRL LEFT REAR SIG LF DR AJAR LH PARK LP SPLY VOLT LOGIC NCA WIRE OG COAX RADIO ANTENNA AMPLIFIER REAR COMPARTMENT LID LATCH RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/YEL WIRE REMOTE CONTROL DOOR LOCK RECEIVER RFR RH PARK LP SPLY VOLT RIGHT REAR SIG SCTY IND CTRL SCTY LOCK RLY CTRL SENS LOW REF SERIAL DATA SW LOCK CTRL SW LOCK SIG SW SIG SW UNLOCK CTRL SW UNLOCK SIG UNDERHOOD FUSE BLOCK VIO/GRY WIRE VIO/YEL WIRE W/ START/STOP SYSTEM W/O START/STOP SYSTEM WHT WIRE WHT/VIO WIRE YEL WIRE YEL/GRN WIRE YEL/VIO WIRE

2.0L AMBIENT LIGHT/SUNLOAD SENSOR BLK WIRE BLK/GRN WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/WHT WIRE BRN WIRE BRN/GRN WIRE BRN/YEL WIRE CHILD SECURITY LOCK DISABLE RELAY COMPUTER DATA LINES SYSTEM DOOR DEAD LOCK RELAY ENGINE CONTROL MODULE GRN WIRE GRY WIRE GRY/BLK WIRE GRY/GRN WIRE HOOD LATCH SNSR LOW REF HOOD STATUS A SIGNAL HOT W/ BATTERY SAVER RELAY 2 ENERGIZED HVAC CONTROL MODULE LOGIC NCA WIRE REAR COMPARTMENT FUSE BLOCK RED/BLU WIRE RIGHT REAR DOOR LATCH ASSEMBLY RIGHT REAR WINDOW SWITCH RR DR AJAR SW SIG SERIAL DATA THEFT MDL/ UGDO/RAIN SNSR FUSE VIO/YEL WIRE W/ START/STOP SYSTEM W/O START/STOP SYSTEM WHT WIRE WHT/BLU WIRE YEL WIRE

1 2 7 RF DRL SPLY VOLT LF DRL SPLY VOLT 18 5 HDLP HI BEAM RLY CTRL 8 18 GND LOW REF AMBIENT LIGHT SENS SIG AMBIENT LIGHT/ SUNLOAD SENSOR (UPPER CENTER OF THE INSTRUMENT PANEL) AUXILIARY UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE BATTERY FUSE BLK WIRE BLK/GRN WIRE BLK/WHT WIRE BLU/GRY WIRE BODY CONTROL MODULE (BEHIND GLOVE BOX) BRN WIRE BRN/VIO WIRE BRN/YEL WIRE COMPT) COMPUTER DATA LINES SYSTEM DK BLU WIRE FOG SW FUSE FUSE 6 BLOCK (ON BATTERY) GRN WIRE GRN/BRN WIRE GRY WIRE GRY/BLU WIRE HDLP DIMMER SW HI BEAM SIG HDLP HI LT/RT HDLP LOW BEAM RLY CTRL 3 1 B+ GND HDLP SW FLASH TO PASS SIG HDLP SWITCH ON SIGNAL HDLP SW HDLPS OFF SIG CTRL HEAD PARK AUTO HEADLAMP HIGH BEAM RELAY HEADLAMP LOW BEAM RELAY HOT AT ALL TIMES HOT AT ALL TIMES REAR BODY FUSE BLOCK BCM 3 (LEFT SIDE OF FUSE LUGGAGE COMPT) HVAC CONTROL MODULE (NEAR RIGHT KICK PANEL) LEFT HEADLAMP ASSEMBLY LEFT HEADLAMP BALLAST LEFT HIGH BEAM SOLENOID ACTUATOR LEFT LOW BEAM HEADLAMP LEFT PARK DAYTIME RUNNING LAMP LF AUXILIARY DRL SPLY VOLT REAR FOG LAMP SW SIG LOW SPD GMLAN SER DATA LOWER LEFT PARK/ DAYTIME RUNNING LAMP LOWER RIGHT PARK/ DAYTIME RUNNING LAMP LT HID FUSE NCA WIRE OFF FLASH TO PASS PNK WIRE RED WIRE RED/GRY WIRE RR FOG LAMP SPLY VOLT RT AUXILIARY DRL SPLY VOLT RT HID FUSE TURN SIGNAL/ MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPT) WHT WIRE WHT/BLU WIRE WHT/DK GRN WIRE WHT/VIO WIRE YEL WIRE YEL/BRN WIRE YEL/GRY WIRE

1 2 RH LOW BEAM SPLY VOLT LH LOW BEAM SPLY VOLT 18 5 HDLP HI BEAM RLY CTRL 3 1 B+ GND 8 18 GND LOW REF AMBIENT LIGHT SENS SIG AMBIENT LIGHT/ SUNLOAD SENSOR (UPPER CENTER OF THE INSTRUMENT PANEL) AUXILIARY UNDERHOOD FUSE BLOCK BATTERY FUSE BLK WIRE BLK/GRN WIRE BLK/WHT WIRE BLU/GRY WIRE BODY CONTROL MODULE (BEHIND GLOVE BOX) BRN/VIO WIRE COMPUTER DATA LINES SYSTEM FLASH TO PASS FOG LAMP SW FUSE 6 BLOCK (ON BATTERY) GRN WIRE GRN/BRN WIRE HDLP DIMMER SW HI BEAM SIG HDLP HI LT/RT FUSE HDLP SW FLASH TO PASS SIG HDLP SWITCH ON SIGNAL HDLP SW HDLPS OFF SIG CTRL HEADLAMP HIGH BEAM RELAY HIGH PARK AUTO HOT AT ALL TIMES HOT AT ALL TIMES REAR BODY BCM 3 FUSE BLOCK FUSE (LEFT SIDE OF LUGGAGE COMPT) HVAC CONTROL MODULE (NEAR RIGHT KICK PANEL) LEFT HEADLAMP ASSEMBLY LEFT HIGH BEAM SOLENOID ACTUATOR LEFT LOW BEAM HEADLAMP LOW SPD GMLAN SER DATA NCA WIRE OFF REAR FOG LAMP SW SIG RED WIRE RED/GRY WIRE RR FOG LAMP SPLY VOLT TURN SIGNAL/ MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPT) WHT WIRE WHT/BLU WIRE WHT/VIO WIRE YEL WIRE YEL/BRN WIRE YEL/GRY WIRE

1 2 3 4 ACTR RTN ACTR TRANSMIT SIG ACTR RECEIVE SIG ACTR SPLY VOLT 1 2 4 DR LOCK CTRL DR LOCK CTRL (2) ACTR UNLOCK CTRL 2 3 19 15 4 GROUND BAT POS VOLT SW LOCK SIG SW UNLOCK SIG B+ 2.0L 24 20 HOOD STATUS B SIG B+ 25 24 GMLAN SERIAL DATA (+) GMLAN SERIAL DATA (-) 2500 2501 COMPUTER DATA LINES SYSTEM 27 16 ACTR TRANSMIT SIG ACTR RETURN 3 18 13 19 B+ HEAD LP HIGH RLY CTRL HEAD LP LOW RLY CTRL HORN RLY CTRL 309 709 EXTERIOR LIGHTS SYSTEM 5 21 IND DIM CTRL SCTY IND CTRL 5 6 RH PARK LP SPLY VOLT LH PARK LP SPLY VOLT ACTR RECEIVE SIG ACTR SPLY VOLT ANTENNA (UPPER PART OF REAR WINDOW) BCM 5 FUSE BLK WIRE BLK/GRN WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/VIO WIRE BLU/WHT WIRE BODY CONTROL MODULE (BEHIND GLOVE BOX) BRN WIRE BRN/GRN WIRE BRN/PPL WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE COAX OG RFR COMPUTER DATA LINES SYSTEM DRIVER DOOR LATCH ASSEMBLY DRIVER WINDOW MOTOR ENGINE CONTROL MODULE (RIGHT FRONT OF ENGINE COMPT) FM/RFR GRN WIRE GRY WIRE GRY/BLK WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/WHT WIRE HEADLIGHTS SYSTEM HORNS SYSTEM HOOD STATUS A SIGNAL HOT AT ALL TIMES HOT AT ALL TIMES UNDERHOOD FUSE BLOCK BCM 7 (RIGHT FRONT OF FUSE ENGINE COMPT) HOT W/ IGNITION MAIN RELAY ENERGIZED AOS DISPLAY/ MIL IGN FUSE LEFT REAR SIG LF DR AJAR SW SIG LOGIC NCA WIRE OG COAX RADIO ANTENNA AMPLIFIER REAR RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/YEL WIRE REMOTE CONTROL DOOR LOCK RECEIVER (RIGHT REAR SIDE OF REAR WINDOW SHELF) RFR SCTY LOCK RLY CTRL SENS LOW REF HOOD LATCH SERIAL DATA VIO/GRY WIRE VIO/YEL WIRE W/ START/STOP SYSTEM W/O START/STOP SYSTEM WHT WIRE WHT/VIO WIRE YEL BLK/ WIRE YEL WIRE YEL/GRN WIRE YEL/VIO WIRE

2.0L 39 40 SERIAL DATA (+) SERIAL DATA (-) AMBIENT LIGHT/SUNLOAD SENSOR (UPPER CENTER OF THE INSTRUMENT PANEL) BLK WIRE BLK/GRN WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/WHT WIRE BRN WIRE BRN/GRN WIRE BRN/YEL WIRE CHILD SECURITY LOCK DISABLE RELAY COMPUTER DATA LINES SYSTEM DOOR DEAD LOCK RELAY ENGINE CONTROL MODULE (RIGHT FRONT OF ENGINE COMPT) GRN WIRE GRY WIRE GRY/BLK WIRE GRY/GRN WIRE HOOD LATCH SNSR LOW REF HOOD STATUS A SIGNAL HOT W/ BATTERY SAVER RELAY 2 ENERGIZED HVAC CONTROL MODULE (NEAR RIGHT KICK PANEL) LOGIC RIGHT REAR WINDOW SWITCH NCA WIRE REAR COMPARTMENT FUSE BLOCK (LEFT SIDE OF LUGGAGE COMPT) RED/BLU WIRE RIGHT REAR DOOR LATCH ASSEMBLY RR DR AJAR SW SIG THEFT MDL/ UGDO/RAIN SNSR FUSE VIO/YEL WIRE W/ START/STOP SYSTEM W/O START/STOP SYSTEM WHT WIRE WHT/BLU WIRE WIRE CHANNEL UNDER LEFT SIDE OF REAR SEAT) YEL WIRE

AERO BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/VIO WIRE BLU WIRE BLU/YEL WIRE BRN WIRE BRN/GRN WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM CTRL ENGINE CHECK ENGINE COOLANT TEMPERATURE (ECT) SENSOR (NEAR MECHANICAL VACUUM PUMP) EXHAUST BANK 2 CAMSHAFT POSITION SENSOR (ON LEFT CYLINDER HEAD) GRN WIRE GRN/BRN WIRE GRY/BLU BLK/GRN WIRE GRY/BLU WIRE HOT AT ALL TIMES BATTERY FUSE BLOCK (ON BATTERY) FUSE IGN 1 IND CTRL INSTRUMENT CLUSTER INTAKE BANK 1 CAMSHAFT POSITION SENSOR (ON RIGHT CYLINDER HEAD) LOGIC LOGIC ACTIVE GRILLE AIR SHUTTER ACTUATOR (BEHIND CENTER OF FRONT FASCIA) MAL- FUNCTION IND RED WIRE SECONDARY AIR INJECTION (AIR) PUMP (LEFT FRONT OF ENGINE) SERIAL DATA SIG SPLY (5) VIO/BLK WIRE VIO/BLU WIRE VIO/BRN WIRE VIO/GRY WIRE VOLT WHT WIRE WHT/RED WIRE YEL WIRE YEL/VIO WIRE YEL/WHT WIRE