Cadillac STS I (2004-2007) class 2 serial data Wiring diagrams

5-VOLT REFERENCE BLK WIRE BRAKE PEDAL POS SENSOR SIGNAL BRAKE PEDAL POSITION SENSOR (ON BRAKE PEDAL SUPPORT) BRN WIRE CLASS 2 SERIAL DATA COMPUTER DATA LINES SYSTEM CRUISE CONTROL SWITCH CRUISE INDICATOR DK GRN WIRE ENGINE CONTROL MODULE (ECM) (FRONT OF ENGINE, ON RIGHT VALVE COVER) FUSE FUSE BLOCK UNDERHOOD (RIGHT FRONT SIDE OF ENGINE COMPARTMENT) TCM/ IPC FUSE GRY WIRE HOT IN RUN OR START IGNITION INSTRUMENT PANEL CLUSTER (IPC) INSTRUMENT PANEL MODULE (RIGHT SIDE OF DASH BEHIND GLOVE BOX) LOGIC LOW REFERENCE NCA WIRE ON OFF PNK WIRE PPL PPL ACCY SUPP VOLTAGE PPL CLASS 2 SERIAL DATA PPL TP SENSOR 2 SIGNAL R/A TAC MOTOR CONTROL-1 TAC MOTOR CONTROL-2 TCC/CRUISE CONTROL RELEASE SIG THROTTLE ACTUATOR CONTROL (TAC) MODULE (PART OF THROTTLE BODY ASSEMBLY) THROTTLE ACTUATOR CONTROL (TAC) MOTOR THROTTLE POSITION (TP) SENSOR TP SENSOR 1 SIGNAL TURN SIGNAL/ MULTIFUNCTION SWITCH WHT WIRE YEL WIRE

5-VOLT REFERENCE BRAKE PEDAL POS SENSOR SIGNAL BRAKE PEDAL POSITION SENSOR (ON BRAKE PEDAL SUPPORT) BRN WIRE CLASS 2 SERIAL DATA COMPUTER DATA LINES SYSTEM CRUISE CONTROL SWITCH CRUISE INDICATOR DK GRN WIRE ENGINE CONTROL MODULE (ECM) (ON LEFT FRONT FRAME RAIL BELOW HEADLAMP) FUSE FUSE BLOCK UNDERHOOD (RIGHT FRONT SIDE OF ENGINE COMPARTMENT) TCM/ IPC FUSE GRY WIRE HOT IN RUN OR START IGNITION INSTRUMENT PANEL CLUSTER (IPC) INSTRUMENT PANEL MODULE (RIGHT SIDE OF DASH BEHIND GLOVE BOX) LOGIC LOW REFERENCE NCA WIRE ON OFF PNK WIRE PPL PPL ACCY SUPP VOLTAGE PPL CLASS 2 SERIAL DATA PPL PPL PPL TP SENSOR 2 SIGNAL R/A TAC MOTOR CONTROL-1 TAC MOTOR CONTROL-2 TAN WIRE TCC/CRUISE CONTROL RELEASE SIG THROTTLE ACTUATOR CONTROL (TAC) MODULE (PART OF THROTTLE BODY ASSEMBLY) THROTTLE ACTUATOR CONTROL (TAC) MOTOR THROTTLE POSITION (TP) SENSOR TP SENSOR 1 SIGNAL TURN SIGNAL/ MULTIFUNCTION SWITCH WHT WIRE YEL WIRE

10 20 1691 1690 PNK LOW REFERENCE MIRROR SIGNAL WIRE 8 9 GROUND BACKUP LAMP VOLTAGE BLK WIRE BLK/WHT WIRE CLASS 2 SERIAL DATA COMPUTER DATA LINES SYSTEM DK GRN WIRE DRIVER DOOR MODULE (DDM) (INSIDE DRIVER DOOR) GRY WIRE HOT AT ALL TIMES HOT IN RUN OR START INSIDE REARVIEW MIRROR (ISRVM) LEFT REAR FUSE BLOCK (BELOW LEFT REAR SEAT) LT GRN WIRE MIRROR SIGNAL PNK IGNITION VOLTAGE WIRE PNK LOW REFERENCE WIRE PNK WIRE REAR INTEGRATION MODULE (UNDER PACKAGE SHELF TRIM PANEL) REV LAMP FUSE REV LAMP RELAY REVERSE LAMP CTRL RIGHT REAR FUSE BLOCK (BELOW RIGHT REAR SEAT) RIM FUSE W/HIGH INTENSITY DISCHARGE HEADLAMPS W/O HIGH INTENSITY DISCHARGE HEADLAMPS

4 8 LOW REFERENCE SUPPLY VOLTAGE 8 6 LOW REFERENCE SUPPLY VOLTAGE BLK WIRE CLASS 2 SERIAL DATA COMPUTER DATA LINES SYSTEM DK GRN WIRE DRIVER DOOR MODULE (IN DRIVER DOOR) DRIVER OUTSIDE REARVIEW MIRROR FEED HEATED MIRROR ELEMENT FRONT PASSENGER DOOR MODULE GRY WIRE HOT AT ALL TIMES HOT IN RUN HVAC CONTROL MODULE (BEHIND CENTER OF DASH, BELOW RADIO) NCA WIRE PASSENGER OUTSIDE REARVIEW MIRROR FEED RTN HEATED MIRROR ELEMENT PPL REAR DEFOG FUSE REAR DEFOG RELAY REAR DEFOGGER INDICATOR REAR DEFOGGER SWITCH LOGIC REAR INTEGRATION MODULE (UNDER PACKAGE SHELF TRIM PANEL) REAR WINDOW DEFOGGER GRID RELAY CONTROL RIGHT REAR FUSE BLOCK (BELOW RIGHT REAR SEAT) RTN WHT WIRE

7 2 14 3 9 CLASS 2 SERIAL DATA BATTERY CLASS 2 SERIAL DATA BATTERY GROUND BATTERY BLK WIRE BLK/WHT WIRE BLU WIRE BRN/WHT WIRE CLASS 2 CLASS 2 SERIAL DATA COMPUTER DATA LINES SYSTEM DK GRN WIRE DOWN MIRROR SWITCH SIG DRIVER DOOR MODULE (ON DRIVER DOOR, UNDER DOOR TRIM PANEL) DRIVER DOOR SWITCH ASSEMBLY DRIVER DR MOD FUSE DRIVER MIRROR MOTOR HORIZONTAL CTRL DRIVER MIRROR MOTOR HORIZONTAL/VER CTRL DRIVER MIRROR MOTOR VERTICAL CTRL DRIVER OUTSIDE REARVIEW MIRROR FRONT PASSENGER DOOR MODULE (ON FRONT PASSENGER DOOR, UNDER DOOR TRIM PANEL) GROUND GRY WIRE HORIZ MOTOR HOT AT ALL TIMES LEFT LEFT MIRROR SELECT LEFT REAR FUSE BLOCK (NEAR LEFT SIDE OF REAR SEAT, UNDER CARPET) LOGIC PASSENGER MIRROR MOTOR HORIZ/VER CTRL PASSENGER MIRROR MOTOR HORIZONTAL CTRL PASSENGER OUTSIDE REARVIEW MIRROR PPL PPL PASSENGER MIRROR MOTOR VERTICAL CTRL RED WIRE RED/WHT WIRE RIGHT RIGHT MIRROR SELECT SWITCH SIG RIGHT MIRROR SWITCH SIG LEFT MIRROR SWITCH SIG RIGHT REAR FUSE BLOCK (NEAR RIGHT SIDE OF REAR SEAT, UNDER CARPET) RT FRT DR MOD FUSE SEL SERIAL DATA SWITCH SIG UP MIRROR SWITCH SIG VERT MOTOR WHT WIRE YEL WIRE

1 2 3 BATTERY BATTERY GROUND 14 20 PARK LMP ON SW SIG PARK BRAKE SW SIG 2 10 PNK PNK WIRE 2 11 3 SERIAL DATA LOW REF DRIVER SIG PNK WIRE 2 12 DOOR AJAR SW SIGNAL LF DOOR SW SIG 21 22 25 13 SERIAL DATA SERIAL DATA RT TURN SW SIG LT TURN SW SIG AUDIBLE ALARM AUDIO AMPLIFIER (IN REAR COMPARTMENT, ON LEFT REAR QUARTER PANEL BRACKET AUTO HDLP BATTERY BLK WIRE BLK/WHT WIRE BRN/WHT WIRE CLASS 2 SERIAL DATA COAX COMPUTER DATA LINES SYSTEM DK BLU/WHT WIRE DK GRN WIRE DOOR AJAR SIGNAL DOOR LOCKS SYSTEM DRIVER DOOR LATCH ASSEMBLY DRIVER DOOR MODULE (INSIDE DRIVER DOOR) DRIVER SEAT BELT SWITCH (IN LEFT FRONT SEAT BELT BUCKLE) GND DOOR OPEN SIGNAL GROUND GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT WITH HEADLAMP SWITCH IN PARK, HEAD INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (UNDER REAR OF CENTER CONSOLE) INSTRUMENT PANEL CLUSTER INSTRUMENT PANEL MODULE (RIGHT SIDE OF DASH BEHIND GLOVE BOX) IPM/ALDL FUSE KEYLESS ENTRY/ TIRE PRESSURE ANTENNA SIGNAL LEFT LEFT TURN INDICATOR LOGIC LIC/DIMMING FUSE LIGHTS ON INDICATOR LOW TIRE PRESSURE INDICATOR LT BLU WIRE LT BLU/WHT WIRE NCA WIRE OFF PARK BRAKE SWITCH (AT BASE OF BRAKE PEDAL) PNK WIRE REAR WINDOW KEYLESS ENTRY ANTENNA RED/WHT WIRE REMOTE CONTROL DOOR LOCK RECEIVER (UNDER REAR SPEAKER SHELF) RIGHT RIGHT TURN INDICATOR SERIAL DATA TAN WIRE TAN/WHT WIRE TURN SIGNAL/MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPT) VOLT CHECK FUSE WHT WIRE YEL WIRE