Cadillac XLR I (2003-2009) ground Wiring diagrams

11 6 VEHICLE SPEED SIGNAL HUD CLASS 2 SERIAL DATA 2500 2501 COMPUTER DATA LINES SYSTEM 5 1 PNK WIRE 5 VOLT REF 53 33 SERIAL DATA BUS + SERIAL DATA BUS - ACCELERATION PEDAL POSITION (APP) SENSOR (TOP OF ACCELERATOR PEDAL ASSEMBLY) AUTOMATIC TRANSMISSION AUXILIARY PW RLY COIL SUPPLY VOLTAGE BATTERY POSITIVE VOLTAGE BLK TAN/ WIRE BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT RIGHT SIDE OF DASH) BRAKE PEDAL POSITION SWITCH SIGNAL BRN WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL SWITCH CRUISE CTRL SET/COAST, RESUME/ ACCEL SW SIGNAL DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROL MODULE (ECM) (LOWER RIGHT REAR OF ENGINE COMPT) FUSE GAP ADJUST SWITCH SIGNAL GRN WIRE GROUND GRY WIRE HEADS UP DISPLAY (HUD) (TOP LEFT SIDE OF DASH) HIGH SPEED GMLAN SERIAL DATA BUS + HIGH SPEED GMLAN SERIAL DATA BUS - HOT AT ALL TIMES HUD MESSAGE CENTER CRUISE SPEED SET XXX INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL (IN STEERING WHEEL) INPUT/OUTPUT SPEED SENSORS (ISS/OSS) ASSEMBLY LOGIC LOGIC INSTRUMENT PANEL CLUSTER (IPC) LOW REF LT BLU WIRE MESSAGE REQUEST NCA WIRE OFF RESUME/ ACCEL + OSS SIGNAL BATT + VOL ISS SIGNAL PNK (NOT USED) WIRE PNK WIRE PPL RADIO RED WIRE RED/WHT WIRE SET/COAST STOP LAMP SWITCH SIGNAL SWITCH SIGNAL DATA BUS - DATA BUS + ISS SIGNAL BATT + VOL OSS SIGNAL TAN WIRE TAN/BLK WIRE TEHC MODULE ASSEMBLY THROTTLE ACTUATOR CONTROL (TAC) MOTOR THROTTLE BODY ASSEMBLY (TOP OF ENGINE, AT INTAKE MANIFOLD) THROTTLE POSITION (TP) SENSOR TURN SIGNAL/ MULTIFUNCTION SWITCH UNDERHOOD FUSE BLOCK (RIGHT REAR OF ENGINE COMPT) VEHICLE SPEED SIGNAL WHT WIRE WHT/ BLK WIRE WHT/BLK WIRE YEL WIRE

5 1 PNK WIRE 5 VOLT REF 53 33 SERIAL DATA BUS + SERIAL DATA BUS - 6 10 11 SWITCH SIGNAL DATA BUS - DATA BUS + ISS SIGNAL BATT + VOL OSS SIGNAL ACC/ TCM FUSE ADAPTIVE CRUISE CONTROL MODULE (ACM) (CENTER OF VEHICLE) ALERT DISTANCE CRUISE SPEED LIMITED FOLLOW DISTANCE SET SPEED SET XX MPH AUTOMATIC TRANSMISSION BCM HIGH SPEED GMLAN SERIAL DATA BUS + BLK TAN/ WIRE BLK WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT SIDE OF DASH) BRAKE PEDAL POSITION SWITCH SIGNAL BRN WIRE CAN-BUS CAN-BUS COMPUTER DATA LINES SYSTEM CRUISE CONTROL SWITCH CRUISE CTRL SET/COAST, RESUME/ ACCEL SW SIGNAL DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROL MODULE (ECM) (LOWER RIGHT REAR OF ENGINE COMPT) FORWARD LOOKING SENSOR (FLS) GRN WIRE GROUND GRY WIRE HOT AT ALL TIMES HOT W/ RUN/CRANK RELAY ENERGIZED IN ENGINE COMPT, ON UPPER RIGHT FRAME RAIL, INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL (IN STEERING WHEEL) INPUT/OUTPUT SPEED SENSORS (ISS/OSS) ASSEMBLY LOGIC BCM HIGH SPEED GMLAN SERIAL DATA BUS - LOGIC HUD CLASS 2 SERIAL DATA LOGIC HUD CLASS 2 SERIAL DATA VEHICLE SPEED SIGNAL LOW REF LT GRN/BLK WIRE MESSAGE CENTER INSTRUMENT PANEL CLUSTER (IPC) MESSAGE REQUEST MESSAGE REQUEST B+ NCA WIRE OFF RESUME/ ACCEL + OSS SIGNAL BATT + VOL ISS SIGNAL PNK 1 5 2 4 3 IGN 1 BATT GND CAN BUS + CAN BUS - WIRE PNK IGN 1 VOLT BATT POSITIVE VOLT WIRE PNK WIRE POWER DISTRIBUTION SYSTEM PPL RADIO 39 7 VEHICLE SPEED SIG STOP LAMP SW SIG RED WIRE RED/WHT WIRE RUN/ CRANK RELAY RUN/ CRANK RLY CTRL SERIAL DATA BUS (+) SERIAL DATA BUS (-) SET/COAST SPLICE PACK STEERING WHEEL CONTROL SWITCH ASSEMBLY TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TEHC MODULE ASSEMBLY THROTTLE ACTUATOR CONTROL (TAC) MOTOR THROTTLE BODY ASSEMBLY (TOP OF ENGINE, AT INTAKE MANIFOLD) THROTTLE POSITION (TP) SENSOR TIGHT CURVE HUD MESSAGE CENTER HEADS UP DISPLAY (HUD) (TOP LEFT SIDE OF DASH) TURN SIGNAL/ MULTIFUNCTION SWITCH TUTD SW/ STRG COL SW FUSE ACCA/DRIV DR SW FUSE UNDERHOOD FUSE BLOCK (RIGHT REAR OF ENGINE COMPT) VEHICLE SPEED SIGNAL WHT WIRE YEL WIRE

AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION SHIFT LEVER BACKUP LAMP RLY CTRL BLK WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT SIDE OF DASH) CLASS 2 SER DATA COMPUTER DATA LINES SYSTEM GRN WIRE GROUND GRY WIRE HI SPD SER DATA + HI-SPEED GMLAN SER DATA BUS- HOT AT ALL TIMES HOT W/ RUN/ CRANK RELAY 7 ENERGIZED INTERNAL MODE SWITCH (IMS) ASSEMBLY LEFT BACKUP LAMP LOGIC LT GRN WIRE NAVIGATION SYSTEM ORG/BLK WIRE PARK NEUTRAL SIGNAL PARK/NEUTRAL SIGNAL PNK PNK WIRE PNK WIRE POWER DISTRIBUTION SYSTEM PPL RED WIRE REVERSE LAMP RELAY 6 REVERSE LAMPS FUSE 9 RIGHT BACKUP LAMP STOP/ B/U/LPS FUSE 5 TAN WIRE TAN/BLK WIRE TAP DWN - TAP UP + TAP UP/ DOWN SWITCH TAP UP/ DWN SW TEHC MODULE ASSEMBLY TRANSMISSION RANGE SIGNAL A TRANSMISSION RANGE SIGNAL B TUTD SW/ STRG COL SW FUSE 28 UNDERHOOD FUSE BLOCK WHT WIRE

AIR CONDITIONING SYSTEM BACKUP LAMP SPLY VOL BATTERY BLK WIRE BLK/LT GRN WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT SIDE OF DASH) COURTESY LAMP LOW CTRL COURTESY LAMPS SUPPLY VOLTAGE GROUND IGN 1 VOLTAGE IGNITION 1 VOLTAGE INSTRUMENT CLUSTER SYSTEM INSTRUMENT CLUSTER SYSTEM LOGIC LT BLU WIRE ORG/ WIRE PNK PNK WIRE PNK WIRE POWER DISTRIBUTION SYSTEM POWER DISTRIBUTION, AIR CONDITIONING, MIRRORS SYSTEMS POWER DISTRIBUTION, CRUISE CONTROL SYSTEMS POWER DISTRIBUTION, DOOR LOCKS SYSTEMS POWER DISTRIBUTION, ELECTRONIC POWER STEERING, POWER TOPS, SEATS SYSTEMS POWER DISTRIBUTION, ENGINE CONTROLS SYSTEMS POWER DISTRIBUTION, NAVIGATION SYSTEMS POWER DISTRIBUTION, SUPPLEMENTAL RESTRAINTS SYSTEMS RED/WHT WIRE SOUND SYSTEMS SPLICE PACK STOP LAMP SUPPLY VOLTAGE STOP LAMP SW SIG WHT 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

BATTERY BLK WIRE BODY CONTROL MODULE (BCM) CLASS 2 SRL DATA COMPUTER DATA LINES SYSTEM EXHAUST FLOW CONTROL MODULE (LEFT REAR OF VEHICLE) EXHAUST FLOW CONTROL VALVE SOLENOID (BEHIND RIGHT SIDE OF REAR BUMPER) GROUND HOT AT ALL TIMES HVAC/ PWR SND FUSE 29 LT GRN/BLK WIRE RED WIRE RED/WHT WIRE SOL SUPPLY SPLICE TAN/WHT WIRE WHT WIRE

5 VOLT REF 5 VOLT REF LOW REF STR WHL POS SIG B STR WHL POS SIG A ABS FUSE 27 BLK/WHT WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DK GRN WIRE DK LT ELECTRONIC BRAKE CONTROL MODULE (EBCM) (LEFT FRONT OF ENGINE COMPT) GMLAN BUS- GRN WIRE GROUND HOT AT ALL TIMES LOW REF LT BLU WIRE LT GRN WIRE LT LT OF ENGINE, ABOVE GENERATOR) RED WIRE RED/BLK WIRE SIGNAL A SIGNAL B STEERING ANGLE SENSOR TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (RIGHT REAR OF ENGINE COMPT) VARIABLE EFFORT STEERING ACTUATOR (LOWER FRONT OF VEHICLE, ON STEERING GEAR) VESA SUP VOLT VESA CONTROL B+ B+ WHT WIRE

BLK WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT SIDE OF DASH) BRN WIRE CLSTR/HUD FUSE 26 COMPUTER DATA LINES SYSTEM DK GRN WIRE GROUND GRY WIRE GRY/BLK WIRE HAZARD SWITCH ON OFF OFF HOT AT ALL TIMES INSTRUMENT PANEL CLUSTER IPC IPC B+ IPC HZRD FLASH SIG IPC CLASS 2 DATA LEFT LICENSE LAMP LEFT REAR STOP/TURN LAMP SUPPLY VOLTAGE LEFT TAIL LAMP ASSEMBLY LEFT TURN SIG IND LOGIC LOGIC LEFT TAIL LAMP OUTAGE DETECTION SIGNAL LOGIC RIGHT TAIL LAMP OUTAGE DETECTION SIGNAL LOGIC STP LMP RLY CTRL LT BLU WIRE PARK LAMP SUPPLY VOLTAGE PARK LEDS PPL PPL 7 8 RED WIRE RED/WHT WIRE RIGHT LICENSE LAMP RIGHT REAR STOP/TURN LAMP SUPPLY VOLTAGE RIGHT TAIL LAMP ASSEMBLY RIGHT TURN SIG IND STOP LAMP RELAY 24 STOP TURN STP LMP SW SIG TAN WIRE TURN SIG AUDIBLE WARNING WHT WIRE YEL 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