Cadillac XLR I (2003-2009) serial data Wiring diagrams

A/C REFRIGERANT PRESSURE SENSOR (RIGHT SIDE OF ENGINE COMPT) ASPIRATOR BLOWER MOTOR BLK WIRE BLK/WHT WIRE BLOWER MOTOR BRN WIRE CHECK GAGES COMPUTER DATA LINES SYSTEM COOLANT OVER TEMP ENGINE HOT/STOP ENGINE LOW COOLANT DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE COOLANT TEMPERATURE (ECT) SENSOR (REAR SIDE OF RIGHT CYLINDER HEAD) GRY WIRE GRY/BLK WIRE HOT ENGINE-A/C OFF SERVICE A/C HUD CLASS 2 SERIAL DATA HUD MESSAGE CENTER INSIDE AIR TEMPERATURE SENSOR INSTRUMENT PANEL CLUSTER (IPC) MESSAGE CENTER IPC CLASS 2 SERIAL DATA LEFT AIR TEMPERATURE ACTUATOR (LEFT SIDE OF HVAC MODULE) LOGIC LOW REF LOW REF GND LOWER LEFT AIR TEMPERATURE SENSOR (ON LEFT SIDE OF HVAC MODULE) LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE MESSAGE REQUEST IGN MESSAGE REQUEST MESSAGE REQUEST B+ MODE ACTUATOR (RIGHT SIDE OF HVAC MODULE) ORG/BLK WIRE PNK 17 18 WIRE PNK WIRE PNK/WHT WIRE RECIRCULATION ACTUATOR (RIGHT SIDE OF BLOWER MOTOR) RED WIRE RED/BLK WIRE RED/ORG WIRE RIGHT AIR TEMPERATURE ACTUATOR (RIGHT SIDE OF HVAC MODULE ASSEMBLY) RLY CTRL SENS SIG SERIAL DATA SPEED CTRL SPEED CTRL BAT B+ CONTROL PROCESSOR (RIGHT SIDE OF BLOWER GND GND MOTOR) LOGIC SPLICE PACK SUNLOAD SENSOR ASSEMBLY (UPPER CENTER OF DASH) SUPP VOL BAT TAN WIRE TAN/BLK WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

19 13 SERIAL DATA CTSY LAMP V+ 19 23 SERIAL DATA CTSY LAMP V+ AJAR AJAR LEFT DOOR COURTESY LAMP CLOSE BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT SIDE OF DASH) BRN WIRE COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM 1037 745 746 CONSOLE COURTESY LAMP CONSOLE COURTESY LAMP SWITCH COURTESY LOW COURTESY V+ DK BLU WIRE DOME DOME SWITCH DRIVER DOOR LATCH (IN REAR OF DRIVER'S DOOR) CLOSE DRIVER DOOR MODULE (DDM) (IN DRIVER'S DOOR) DRIVER INFORMATION CENTER (DIC) SWITCH FRONT PASSENGER DOOR LATCH (IN REAR OF PASSENGER'S DOOR) FRONT PASSENGER DOOR MODULE (FPDM) (IN FRONT DOOR) GARAGE DOOR OPENER CTSY LAMPS +V GROUND GRY WIRE GRY/BLK WIRE HARNESS, AT BASE OF RIGHT A PILLAR BEHIND TRIM PANEL, GROUNDED TO HOT AT ALL TIMES I/P COMPARTMENT LAMP INADVERTMENT LOAD CONTROL PCB RELAY INADVERTMENT LOAD CTRL RLY INSIDE REARVIEW MIRROR INSTRUMENT PANEL CLUSTER (IPC) INTERIOR LIGHTS FUSE 17 LEFT COURTESY LAMP LEFT REAR COMPART- MENT COURTESY LAMP LEFT VANITY MIRROR LAMP LOGIC LOGIC LID AJAR SW SIG LT GRN WIRE NCA WIRE ORG/ WIRE PPL REAR COMPARTMENT LID PULL DOWN ACTUATOR (AT UPPER CENTER OF LUGGAGE COMPT) RED WIRE RIGHT COURTESY LAMP RIGHT DOOR COURTESY LAMP RIGHT REAR COMPARTMENT COURTESY LAMP RIGHT VANITY MIRROR LAMP SERIAL DATA SERIAL DATA LF DOOR AJAR RF DOOR AJAR SPLICE PACK SPLICE PACK SPLICE PACK TAN WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK (RIGHT REAR OF ENGINE COMPT) WHT WIRE

ABS IND. AIR BAG IND B+ IPC BATTERY BLK WIRE BLU WIRE BRAKE FLUID LEVEL SWITCH (IN BRAKE FLUID RESERVOIR) BRAKE IND BRN WIRE BRN/WHT WIRE CLASS 2 (BCM) CLASS 2 (ECM) CLASS 2 (SDM) COMPUTER DATA LINES SYSTEM COOLANT TEMP DIC UP SW DIC SW ILLUM DIC SW DOME LAMP DIC RESET DIC OPTIONS DIC GROUND DIM DOWN SWITCH DIM UP SWITCH DIMMER SWITCH DIMMER/HEAD UP DISPLAY (HUD) SWITCH DK GRN/WHT WIRE DN UP DOME SWITCH DRIVER INFORMATION CENTER (DIC) SWITCH DRIVER INFORMATION CENTER: MESSAGE CENTER, INFORMATION DISPLAY, WARNING MESSAGES ENGINE SPEED VEHICLE SPEED PARK LAMP WASHER FLUID HAZARD FOG LAMP IND FUEL LEVEL GMLAN (EBCM) GMLAN (ECM) GMLAN CLASS 2 (BCM) GRN WIRE GROUND GROUND DIMMER UP DIMMER DOWN DIMMER SELECT GRY WIRE HEADLAMPS ON IND HIGH BEAM IND IGN ILLUM ILLUMINATION (3 BULBS) IMAGE SWITCH INFORMATION SWITCH INSTRUMENT PANEL CLUSTER (IPC) IPC KM/H IND LEFT TURN IND LOGIC LOW TIRE PRESSURE IND LT BLU WIRE MALFUNCTION IND MESSAGE REQUEST MPH IND OIL PRESSURE OPTIONS SWITCH ORG/ WIRE PANEL LAMP SUPPLY PANEL LAMPS PANEL LAMPS PARK BRAKE BRAKE FLUID PARK BRAKE PEDAL ASSEMBLY PNK 5 6 WIRE PNK WIRE PPL RED/WHT WIRE RESET SWITCH RIGHT TURN IND SEAT BELT IND SECURITY IND SERIAL DATA SPEEDOMETER TACHOMETER TAN/WHT WIRE TRACTION OFF IND TURN SIGNAL AUDIBLE IND UNDERHOOD FUSE BLOCK (RIGHT REAR OF ENGINE COMPT) UPSHIFT IND VSS WHT WIRE WIPER/WASHER SYSTEM YEL WIRE

25 39 12 ENG SPEED VSS MIL CTRL 4.6L 44 9 45 FUEL LVL 1 LOW REF FUEL LVL 2 45 65 LOW REF ENG OIL SENS 53 33 SERIAL DATA + SERIAL DATA - 60 24 40 OIL PRES SIG LOW REF BATTERY POSITIVE VOLTAGE BELT SWITCH BLK WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT SIDE OF DASH) CLSTR/ HUD FUSE 26 BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN/WHT WIRE DRIVER SEAT BELT BUCKLE DRIVER SEAT BELT SWITCH ECT SIG ENGINE CONTROL MODULE (ECM) (LOWER RIGHT REAR OF ENGINE COMPT) ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMPERATURE (ECT) SENSOR (REAR SIDE OF RIGHT CYLINDER HEAD) ENGINE OIL LEVEL, TEMPERATURE SENSOR ENGINE OIL PRESSURE (EOP) SENSOR (LOWER LEFT SIDE OF ENGINE) FUEL LEVEL SENSOR (LEFT) FUEL LEVEL SENSOR (RIGHT) (TOP OF RIGHT FUEL TANK) FUEL PUMP, SENDER ASSEMBLY (IN LEFT FUEL TANK) GROUND GRY WIRE HEAD UP DISPLAY (HUD) (TOP LEFT SIDE OF DASH) HOT AT ALL TIMES HUD MESSAGE CENTER IMAGE DOWN SIGNAL IMAGE UP IMAGE DOWN IMAGE UP SIGNAL INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (SDM) (UNDER CENTER CONSOLE) LOGIC LOW REF LT BLU WIRE MESSAGE REQUEST NCA WIRE OIL LVL SW PNK 5 6 WIRE PNK LOW REF WIRE PNK WIRE RADIO REAR OBJECT SENSOR CONTROL MODULE (BEHIND REAR COMPT STOWAGE TRIM PANEL) RED/WHT WIRE SERIAL DATA SPLICE PACK TAN WIRE TAN/BLK WIRE TAN/WHT WIRE UNDER SEAT BASE) UNDERHOOD FUSE BLOCK (RIGHT REAR OF ENGINE COMPT) VEHICLE SPEED SIGNAL VSS WHT WIRE YEL WIRE

1047 1359 19 4 SERIAL DATA LCD BACKLIGHT 19 23 SERIAL DATA LCD BACKLIGHT AUTOMATIC TRANS- MISSION SHIFT LEVER BATTERY BLK WIRE BLU WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT SIDE OF DASH) LOGIC BRN WIRE BRN/WHT WIRE CLSTR/ HUD FUSE 26 COMPUTER DATA LINES SYSTEM DIM CTRL PANEL LMPS DIM DOWN SWITCH DIMMER SWITCH DIM UP SWITCH DIMMER/HEAD UP DISPLAY (HUD) SWITCH DRIVER DOOR LOCK SWITCH DRIVER DOOR MODULE (DDM) (IN DRIVER'S DOOR) DRIVER DOOR SWITCH ASSEMBLY (DDSA) DRIVER INFORMATION CENTER (DIC) SWITCH DRIVER INTERIOR DOOR HANDLE SWITCH (ON DRIVER'S INNER DOOR PANEL) FOLDING TOP CONTROL SWITCH FRONT PASSENGER DOOR LOCK SWITCH FRONT PASSENGER DOOR MODULE (FPDM) (IN FRONT DOOR) FRONT PASSENGER WINDOW SWITCH FUEL DOOR RELEASE SWITCH GRN WIRE GROUND GROUND DIMMER UP DIMMER DOWN DIMMER SELECT SPLY VOLT GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/BLK WIRE HARNESS, AT BASE OF LEFT A PILLAR BEHIND TRIM PANEL, GROUNDED HAZARD SWITCH HEAD HOT AT ALL TIMES HVAC CONTROL MODULE (AT CENTER OF DASH) I/P FUSE BLOCK (FRONT OF RIGHT FRONT FOOTWELL, BEHIND CARPET) IGNITION MODE SWITCH REAR COMP- ARTMENT LID RELEASE SWITCH (INTERIOR) ILLUM ILLUM (3 BULBS) INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL (IN STEERING WHEEL) INSTRUMENT PANEL CLUSTER (IPC) INTERIOR LIGHTS FUSE 17 LOGIC MEMORY SEAT SWITCH ORG/ WIRE PANEL, GROUNDED TO PARK AUTO OFF PARK LAMP PARK LAMP RELAY 37 PARK LAMP SW SIGNAL PARK LAMPS FUSE 8 PASSENGER DOOR HANDLE SWITCH (INTERIOR) (ON DRIVER'S INNER DOOR PANEL) POWER DISTRIBUTION SYSTEM RADIO RED WIRE RED/WHT WIRE SEATS, MEMORY SYSTEMS SENSOR BREAKOUT) SERIAL DATA SERIAL DATA BATTERY PARK LAMPS PANEL LAMPS GROUND PANEL LAMPS SERIAL DATA ILLUM SUPPLY SPLICE PACK SPLY VOLT GROUND STEERING WHEEL CONTROL SWITCH ASSEMBLY STR WHL DIMMING FUSE 39 SUPPLY VOLT TAN WIRE TILT/ TELE SW/ MEM SEAT MOD FUSE 22 TRACTION CONTROL SWITCH TURN SIGNAL/ MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK (RIGHT REAR OF ENGINE COMPT) WHT WIRE YEL WIRE

BATTERY (B+) GROUND BATTERY B+ MEMORY 1 SW SIG MEMORY 2 SW SIG CLASS 2 SERIAL DATA BLK WIRE BODY CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) BRN WIRE BRN/WHT WIRE DK GRN WIRE DOWN SW SIG DR CONTROLS CIRCUIT BREAKER 34 DRIVER DOOR MODULE (DDM) (IN DRIVER'S DOOR) DRIVER DOOR SWITCH ASSEMBLY DRIVER MEMORY SEAT MODULE (UNDER DRIVER'S SEAT) DRIVER OUTSIDE REARVIEW MIRROR (OUTSIDE OF DRIVER'S DOOR) EXIT SWITCH FRONT PASSENGER DOOR MODULE (FPDM) (IN FRONT DOOR) GROUND GRY WIRE GRY/BLK WIRE HORIZONTAL MOTOR HORIZONTAL POSITION SENSOR VERTICAL MOTOR HORIZONTAL POSITION SENSOR VERTICAL POSITION SENSOR HOT AT ALL TIMES I/P FUSE BLOCK (FRONT OF RIGHT FRONT FOOTWELL, BEHIND CARPET) L MIRR SIG LEFT SW SIG LO LT LOGIC LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE MEMORY 2 SWITCH MEMORY SEAT SWITCH MEMORY 1 SWITCH NCA WIRE ORG/WHT WIRE PASSENGER OUTSIDE REARVIEW MIRROR (OUTSIDE OF PASSENGER'S DOOR) PPL PWR SEAT CIRCUIT BREAKER 33 R MIRR SIG RED WIRE RED/WHT WIRE RIGHT SW SIG SERIAL DATA SPLICE TAN WIRE TILT/TELE SW/ MEM SEAT MOD FUSE 26 UP SW SIG VERTICAL MOTOR VERTICAL POSIT SENSOR LOW REFERENCE HORIZ POSIT SENSOR GROUND VERTICAL POSITION SENSOR HORIZONTAL MOTOR WHT WIRE YEL WIRE

ACCA/DRIV DR SW FUSE 21 BATTERY POSITIVE VOLT BLK WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT SIDE OF DASH) BRN WIRE COMPUTER DATA LINES SYSTEM DDM CLASS 2 SER DATA DOWN DR CNTRLS CIRCUIT BREAKER 34 DRIVER DOOR MODULE (DDM) (IN DRIVER'S DOOR) DRIVER DOOR SWITCH ASSEMBLY (DDSA) DRIVER WINDOW MOTOR (IN CENTER OF DRIVER'S DOOR) DRIVER WINDOW SWITCH DRIVER WNDO DOWN SIGNAL DRIVER WNDO EXPRESS SIG DRIVER WNDO UP SIGNAL EXPRESS UP/DOWN FRONT PASSENGER DOOR MODULE (FPDM) (IN FRONT DOOR) FRONT PASSENGER WINDOW MOTOR (CENTER OF PASSENGER'S DOOR) FRONT PASSENGER WINDOW SWITCH GROUND GRY WIRE HOT AT ALL TIMES I/P FUSE BLOCK (FRONT OF RIGHT FRONT FOOTWELL, BEHIND CARPET) LOGIC PASS WNDO DOWN SIGNAL PASS WNDO EXPRESS SIG PASS WNDO UP SIGNAL PASSENGER WINDOW SWITCH PDM CLASS 2 SER DATA POWER WINDOW MOTOR FR PASSENGER DOWN SIG POWER WINDOW MOTOR FRONT PASSENGER UP SIG POWER WINDOW MOTOR LEFT FRONT UP CONTROL POWER WINDOW MOTOR LT FRONT DOWN CONTROL POWER WINDOW MOTOR RIGHT FRONT UP CONTROL POWER WINDOW MOTOR RT FRONT DOWN CONTROL PPL PPL POWER WINDOW SWITCH RIGHT FRONT EXPRESS SIG RED WIRE RED/WHT WIRE SERIAL DATA SPLICE PACK TAN WIRE WHT WIRE

7 8 9 10 11 PPL BLK WIRE BLK/WHT WIRE BODY SCM/PSIR SW FUSE 13 CONTROL MODULE (BCM) (BEHIND RIGHT SIDE OF DASH) BRN WIRE CASE GROUND CONNECTOR DK BLU WIRE DK GRN WIRE DRIVER SEAT BELT SWITCH GRN WIRE GRY WIRE HOT W/ RUN/ CRANK RELAY ENERGIZED INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (SDM) (UNDER CENTER CONSOLE) INFLATABLE RESTRAINT STEERING WHEEL MODULE (CENTER OF STEERING WHEEL) INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL LEFT FRONT SEAT BELT PRETENSIONER LEFT INFLATABLE RESTRAINT SIDE IMPACT MODULE (LEFT SIDE OF DRIVER'S SEAT BACK) LT BLU WIRE LT GRN WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PASSENGER SEAT BELT SWITCH PNK (APPROXIMATELY 11 CM FROM YAW RATE WIRE PNK 1 2 3 WIRE PNK PNK WIRE PNK SHORTING BAR WIRE PNK WIRE PPL RIGHT FRONT SEAT BELT PRETENSIONER RIGHT INFLATABLE RESTRAINT SEAT POSITION SWITCH (IN RIGHT FRONT SEAT TRACK) RIGHT INFLATABLE RESTRAINT SIDE IMPACT MODULE (RIGHT SIDE OF PASSENGER'S SEAT) SERIAL DATA SHORTING BAR STAGE 1 STAGE 2 TAN WIRE TAN/WHT WIRE WHT WIRE YEL WIRE YEL/BLK WIRE