Cadillac CTS I (2002-2007) (behind the left kick panel) Wiring diagrams

A/T ABS IND. B+ LOGIC LOGIC BAS FUSE BASE RELAY BLK WIRE BLK/WHT WIRE BLU WIRE BRAKE FLUID LEVEL SWITCH (ON BRAKE FLUID RESERVOIR) BRAKE FLUID PRESSURE SENSOR (5.7L) (ON REAR OF BRAKE PRESSURE MODULATOR VALVE) BRAKE IND BRANCHES FROM THE LT MAIN HARNESS) BRANCHES FROM THE MAIN HARNESS) (W/ ACTIVE BRAKE CONTROL) BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE ELECTRONIC PRNDL (EXCEPT 5.7L) GRN WIRE GROUND GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES INSTRUMENT PANEL CLUSTER (IPC) JOINT CONNECTOR LATERAL ACCELEROMETER SIG YAW RATE SENS SIGNAL LOW REFERENCE LEFT FRONT WHEEL SPEED SENSOR (WSS) LEFT REAR FUSE BLOCK (BELOW LEFT REAR SEAT) LOGIC LOGIC B+ LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE LT LT ORG/ WIRE PARK BRAKE SWITCH (ON PARK BRAKE ASSEMBLY) PPL PPL PPL 1807 1807 CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA PPL PPL 9 25 11 27 3 REAR INTEGRATION MODULE (UNDER PACKAGE SHELF TRIM PANEL) RED/WHT WIRE SPEED SENSOR (WSS) SPORT MODE STEERING WHEEL POSITION SENSOR (NEAR MIDDLE OF STEERING COLUMN) TAN WIRE TRACTION CONTROL OFF IND TRACTION CONTROL SWITCH W/ ACTIVE BRAKE CONTROL WHT WIRE WINTER MODE YEL WIRE

1807 1807 PPL PPL 22 23 CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA 1807 1807 PPL PPL CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA 20 21 2500 2501 H SPEED GMLAN DATA BUS + H SPEED GMLAN DATA BUS - 24 PPL 26 PPL 25 PPL 3 2 5 1 6 4 PPL PPL PPL PPL PPL PPL 33 32 2501 2500 H SPEED GMLAN DATA BUS - H SPEED GMLAN DATA BUS + 5.7L A/T EXCEPT 5.7L AUDIO AMPLIFIER (LEFT SIDE OF TRUNK) BASE BLK WIRE BLK/WHT WIRE CLASS 2 SERIAL DATA LEFT HEADLAMP CLASS 2 SERIAL DATA RIGHT HEADLAMP DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) DIGITAL RADIO RECEIVER (LEFT SIDE OF REAR PACKAGE SHELF) DIM/ALDL FUSE DRIVER DOOR MODULE (ON LEFT DOOR, UNDER DOOR TRIM) DRIVER DOOR SWITCH ASSEMBLY (DDSA) DRIVER'S MEMORY SEAT MODULE (UNDER DRIVER'S SEAT) ELECTRONIC BRAKE CONTROL MODULE (EBCM) (AT RIGHT FRONT CORNER OF ENGINE COMPT) ENGINE CONTROL MODULE (ECM) (FRONT OF RIGHT VALVE COVER) EXCEPT 5.7L EXCEPT 5.7L PPL FRONT PASSENGER DOOR MODULE (ON RIGHT FRONT DOOR, UNDER DOOR TRIM PANEL) HOT AT ALL TIMES HVAC CONTROL MODULE (BEHIND CENTER OF DASH, BELOW RADIO) INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (UNDER CENTER CONSOLE) INSTRUMENT PANEL CLUSTER (IPC) LEFT REAR DOOR MODULE (UNDER DOOR TRIM PANEL) LT GRN WIRE LUXURY POWERTRAIN CONTROL MODULE PPL PPL CLASS 2 SERIAL DATA PPL PPL 1807 1807 11 8 CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA PPL PPL 1807 1807 25 9 CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA PPL PPL 1807 1807 CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA PPL PPL 59 58 1807 1807 CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA PPL PPL CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA PPL PPL PPL PPL PPL PPL PPL PPL RADIO RADIO ANTENNA MODULE (ABOVE HEADLINER, NEAR REAR WINDOW) REAR INTEGRATION MODULE (RIM) (UNDER PACKAGE SHELF TRIM PANEL) RED WIRE RED/WHT WIRE RIGHT REAR DOOR MODULE (ON RIGHT REAR DOOR, UNDER DOOR TRIM PANEL) THEFT DETERRENT CONTROL MODULE (AT TOP OF STEERING COLUMN) TRANSMISSION CONTROL MODULE (TCM) (AT RIGHT FRONT OF ENGINE COMPT) TV ANTENNA MODULE UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPT) W/ AUTOMATIC HEADLAMPS CONTROL LEVELING SYSTEM WHT WIRE WHT/BLK WIRE

6 SPD M/T OTHERS BLK WIRE BRN WIRE BRN/WHT WIRE CLASS 2 (DIM) CLASS 2 SERIAL DATA COMPARTMENT) COMPUTER DATA LINES SYSTEM DK GRN WIRE DK GRN/WHT WIRE FLASH TO PASS SWITCH SIGNAL FOG LAMP FUSE FOG LAMP RELAY FOG LAMP RLY CTRL LO BEAM RLY CONTROL HI BEAM RLY CTRL COIL SPLY VOLT CTRL FRONT FOG LAMP IND FRONT FOG LAMP SWITCH GRY WIRE HEADLAMP RELAY CONTROL HI LOW HIGH BEAM IND HOT AT ALL TIMES HOT IN RUN OR START HVAC CONTROL MODULE (BEHIND CENTER OF DASH, BELOW RADIO) INSTRUMENT PANEL CLUSTER (IPC) LEFT FRONT FOG LAMP LEFT FRONT TURN SIGNAL/ FOG LAMP ASSEMBLY LOGIC LT BLU WIRE LT BLU/BLK WIRE M/T NCA WIRE ORG/ WIRE OTHERS 6 SPD M/T PARK HEAD HEAD OFF AUTO AUTO PARK OFF PNK WIRE PNK/WHT WIRE PPL PPL PPL RIGHT FRONT FOG LAMP RIGHT FRONT TURN SIGNAL/ FOG LAMP ASSEMBLY SUNLOAD SENSOR (TOP CENTER OF I/P, ON DEFROST GRILL) TAN WIRE TAN/WHT WIRE TURN SIGNAL/ MULTIFUNCTION SWITCH UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE WHT WIRE YEL WIRE

1314 419 EXTERIOR LIGHTS SYSTEM ENGINE CONTROLS 5.7L 818 1537 ANTI-LOCK BRAKES SYSTEM ABS INDICATOR B+ CLASS 2 (ECM) BACKLIGHTING BACKLIGHTING CTRL BLK WIRE BLK/WHT WIRE BRAKE FLUID LEVEL SWITCH (ON BRAKE FLUID RESERVOIR) BREAK INDICATOR BRN WIRE BRN/WHT WIRE CHARGE INDICATOR CLASS 2 (DIM) CLASS 2 (EBCM) CLASS 2 (ECM) CLASS 2 (ECM) B+ CLASS 2 (RIM) CLASS 2 (SDM) COMPUTER DATA LINES SYSTEM CRUISE INDICATOR DK BLU WIRE DK BLU/WHT WIRE DK GRN/WHT WIRE ECM/TCM FUSE ELEC PRNDL FUSE ELECTRONIC PRNDL ENGINE COOLANT TEMPERATURE INDICATOR EXTERIOR LIGHTS FASTEN SAFETY BELT INDICATOR FRONT FOG LAMPS INDICATOR FUEL LEVEL GROUND GRY WIRE HIGH BEAM INDICATOR HOT AT ALL TIMES HOT IN ACC OR RUN HOT IN RUN OR START IGNITION 1 VOLTAGE INSTRUMENT PANEL CLUSTER (IPC) LED DIMMING SIG LEFT TURN INDICATOR LIGHTS ON INDICATOR LOGIC LOW TIRE PRESSURE INDICATOR LT BLU WIRE LT BLU/WHT WIRE MALFUNCTION IND LAMP (MIL) ORG/BLK WIRE PARK BRAKE SWITCH (ON PARK BRAKE ASSEMBLY) PNK WIRE PPL PPL/WHT WIRE RED/WHT WIRE RIGHT DRIVER INFORMATION CENTER (DIC) (5.7L) RIGHT TURN INDICATOR SECURITY INDICATOR SERIAL DATA PARK BRAKE SW SIG SIR INDICATOR SKIP SHIFT IND SPEEDOMETER CONTROL B+ CLASS 2 B+ SPEEDOMETER LOW ENGINE OIL PRESSURE IND SPORT MODE INDICATOR SYSTEM TACHOMETER TACHOMETER CONTROL TAN/WHT WIRE TCM/IPC FUSE TEMPERATURE TOWER) TRACTION CONTROL OFF INDICATOR TRANSMISSION RANGE SW SIG A TRANSMISSION RANGE SW SIG B TRANSMISSION RANGE SW SIG C TRANSMISSION RANGE SW SIG C TRANSMISSION RANGE SW SIG P TRANSMISSION RANGE SW SIG P TRANSMISSIONS SYSTEM COMPUTER DATA LINES SYSTEM TRIP ODOMETER TRIP RESET SW SIG TRIP RESET SWITCH TRIP/ODOMETER CTRL UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPT) VEHICLE SPEED SIG VOLTAGE WAIT TO START INDICATOR (NOT USED) WHT WIRE WINTER MODE INDICATOR YEL WIRE

1807 1807 COMPUTER DATA LINES SYSTEM 9 8 LED DIMMING SIGNAL AUTO HEAD BATTERY GROUND GROUND BACKLIGHT LAMPS CTRL BATTERY INC DIM BACKLIGHTS LAMP CTRL BLK WIRE BLK/WHT WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DIM/ ALDL FUSE DIMMING FUSE DK GRN WIRE DRIVER DOOR LOCK SWITCH DRIVER DOOR MODULE (ON LEFT DOOR, UNDER DOOR TRIM) DRIVER DOOR SWITCH ASSEMBLY (DDSA) DRIVER DR MOD FUSE ELECTRONIC PRNDL (A/T) GRN WIRE GROUND HOT AT ALL TIMES I/P DIMMER SWITCH ILLUMINATION LAMP INSTRUMENT PANEL CLUSTER (IPC) JOINT CONNECTOR LED DIMMING SIGNAL LEFT REAR FUSE BLOCK (BELOW LEFT REAR SEAT) LT BLU/BLK WIRE MEMORY PERSONALIZATION FUNCTION SWITCH OVERHEAD CONSOLE PARK LAMP RELAY PARK LP RLY CTRL CONTROL POWER OUTPUT PARK OFF PPL CLASS 2 SERIAL DATA PPL PPL PPL PPL SERIAL DATA SERIAL DATA PPL/WHT WIRE PSGR DR MOD FUSE REAR COMPARTMENT LID RELEASE SWITCH REAR DR MOD FUSE RED WIRE RED/WHT WIRE RIGHT REAR FUSE BLOCK (BELOW RIGHT REAR SEAT SUNROOF CONTROL SWITCH TURN SIGNAL/ MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPARTMENT) WHT WIRE YEL WIRE

3.2L/3.6L 5.7L BACKLIGHT LAMPS CTRL BATTERY BATTERY GROUND BACKLIGHT LAMPS CTRL GROUND BLK WIRE BLK/WHT WIRE BLU WIRE COMPUTER DATA LINES SYSTEM DIMMING FUSE FRONT PASSENGER DOOR LOCK SWITCH FRONT PASSENGER DOOR MODULE (ON RIGHT FRONT DOOR, UNDER DOOR TRIM PANEL) FRONT PASSENGER WINDOW SWITCH FUSE BLOCK (STEERING COLUMN) (TAPED TO STEERING COLUMN HARNESS) GROUND HAZARD SWITCH ILLUMI- NATION LAMP LEFT REAR DOOR MODULE (UNDER DOOR TRIM PANEL) LEFT REAR WINDOW SWITCH LEFT STEERING WHEEL CONTROLS PPL PPL SERIAL DATA RED/WHT WIRE RIGHT REAR DOOR MODULE (ON RIGHT REAR DOOR, UNDER DOOR TRIM PANEL) RIGHT REAR WINDOW SWITCH RIGHT STEERING WHEEL CONTROLS SERIAL DATA WHEEL MODULE WHT WIRE YEL WIRE

10 9 8 PPL CLASS 2 SERIAL DATA BATTERY BATTERY GROUND BATTERY GROUND RTN GROUND BATTERY GROUND BLK WIRE BLK/WHT WIRE COMPUTER DATA LINES SYSTEM DEFOGGER SYSTEM DOWN DR MOD PWR CIRCUIT BREAKER DRIVER DOOR MODULE (ON LEFT DOOR, UNDER DOOR TRIM) DRIVER DOOR SWITCH ASSEMBLY (DDSA) DRIVER OUTSIDE REARVIEW MIRROR FRONT PASSENGER DOOR MODULE (ON RIGHT FRONT DOOR, UNDER DOOR TRIM PANEL) GROUND HORIZ MOTOR HOT AT ALL TIMES LEFT LEFT REAR FUSE BLOCK (BELOW LEFT REAR SEAT) DRIVER DR MOD FUSE LOGIC OUTSIDE REARVIEW MIRROR SWITCH PASSENGER OUTSIDE REARVIEW MIRROR PPL CLASS 2 SERIAL DATA PPL PPL CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA PSGR DR MOD FUSE REAR SEAT) RED WIRE RED/WHT WIRE RIGHT RIGHT REAR FUSE BLOCK (BELOW RIGHT SEL LEFT SEL RIGHT VERT MOTOR WHT WIRE

BATTERY DOWN CONTROL UP CONTROL BLK/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DOOR LOCKS SYSTEM DOWN SIG EXPRESS SIGNAL UP SIGNAL CLASS 2 SERIAL DATA PPL DR MOD PWR C/B CIRCUIT BREAKER DRIVER DOOR MODULE (ON LEFT DOOR, UNDER DOOR TRIM) DRIVER DR MOD FUSE DRIVER WINDOW MOTOR FRONT PASSENGER DOOR MODULE (ON RIGHT FRONT DOOR, UNDER DOOR TRIM PANEL) FRONT PASSENGER WINDOW MOTOR FRONT PASSENGER WINDOW SWITCH HIGH SPEED SERIAL DATA LOW REFERENCE LOW SPEED SERIAL DATA BATTERY HOT AT ALL TIMES JOINT CONNECTOR LEFT REAR FUSE BLOCK (BELOW LEFT REAR SEAT) LT GRN WIRE ORG/ WIRE PPL PPL PNK WIRE PPL PPL CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA PSGR DR MOD FUSE REAR DR MOD FUSE RED WIRE RED/WHT WIRE RIGHT REAR FUSE BLOCK (BELOW RIGHT REAR SEAT) WHT WIRE YEL WIRE

BATTERY BATTERY DOWN CONTROL UP CONTROL BATTERY GROUND BACKLIGHTS LAMPS CTRL GROUND BATTERY GROUND BACKLIGHTS LAMPS CTRL GROUND GROUND BLK WIRE BLK/WHT WIRE BRN WIRE CLASS 2 SERIAL DATA COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DOOR LOCKS SYSTEM DRIVER DOOR SWITCH ASSEMBLY (DDSA) DRV WINDOW DOWN SIG DRV WINDOW EXPRESS SIG DRV WINDOW UP SIG FRONT PASSENGER DOWN SIG FRONT PASSENGER EXPRESS SIG FRONT PASSENGER UP SIG GROUND GRY/BLK WIRE LEFT REAR DOOR MODULE (UNDER DOOR TRIM PANEL) LEFT REAR WINDOW MOTOR LEFT REAR WINDOW SWITCH LOGIC LR WINDOW DOWN SIG LR WINDOW EXPRESS SIG LR WINDOW UP SIG LT GRN WIRE PPL PPL CLASS 2 SERIAL DATA UP SIGNAL EXPRESS SIGNAL DOWN SIGNAL RED/WHT WIRE RIGHT REAR WINDOW MOTOR RIGHT REAR WINDOW SWITCH RR WINDOW DOWN SIG RR WINDOW EXPRESS SIG RR WINDOW UP SIG UP CONTROL DOWN CONTROL BATTERY WHT WIRE WINDOW LOCK OUT YEL WIRE

11 3 PNK LOW REF DRIVER SIG WIRE 22 23 PPL PPL SERIAL DATA SERIAL DATA 8 11 PPL PPL AUDIO AMPLIFIER (LEFT SIDE OF TRUNK) LUXURY BASE AUTO HEAD BATTERY BLK WIRE BLK/WHT WIRE BRN/WHT WIRE CHECK TIRE PRESSURE, SERVICE MONITOR CLASS 2 (DIM) CLASS 2 (SDM) CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA DOOR AJAR SW SIGNAL LF DOOR SW SIG COMPUTER DATA LINES SYSTEM DIM/ALDL FUSE DOOR AJAR SIGNAL DOOR OPEN SIGNAL DRIVER DOOR LATCH ASSEMBLY DRIVER DOOR MODULE (ON LEFT DOOR, UNDER DOOR TRIM) DRIVER SEAT BELT SWITCH FASTEN SAFETY BELT INDICATOR GROUND GROUND BATTERY GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES IGNITION KEY ALARM SWITCH (ON STEERING COLUMN) INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (UNDER CENTER CONSOLE) INSTRUMENT PANEL CLUSTER (IPC) KEY IN IGN SW SIG PARK LAMP ON SW SIG HEADLAMPS ON SIG KEYLESS ENTRY/ TIRE PRESSURE ANTENNA SIGNAL LIGHTS ON INDICATOR LOGIC LOW TIRE PRESSURE INDICATOR LOGIC LT GRN WIRE MESSAGE CENTER NCA WIRE PARK OFF PARK OFF AUTO HEAD PNK WIRE PPL PPL CLASS 2 SERIAL DATA PPL PPL 1807 1807 745 126 PPL PPL CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA RADIO RADIO ANTENNA MODULE (ABOVE HEADLINER, NEAR REAR WINDOW) RED/WHT WIRE RFA REAR WINDOW ANTENNA SERIAL DATA SERIAL DATA (-) SERIAL DATA (+) SUPPLEMENTAL RESTRAINTS SYSTEM TAN WIRE TAN/WHT WIRE TURN SIGNAL/MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPT) VOLT CHECK FUSE WHT WIRE