Cadillac XLR I (2003-2009) message center Wiring diagrams

6.5 CM FROM BREAK OUT TO ACCELERATOR PEDAL POSITION SENSOR) ABS FUSE 27 ABS/MRRTD/AFS FUSE 1 ACCELEROMETER LATERAL BAT BAT IGN 1 VOLTAGE BLK WIRE BLK/WHT WIRE BRAKE FLUID LEVEL SWITCH (IN BRAKE FLUID RESERVOIR) BRAKE FLUID PRESSURE SENSOR (ON BRAKE PRESSURE MODULATOR VALVE) BRAKE IND BRK FLUID LVL SENS SIGNAL BRN WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE ELECTRONIC BRAKE CONTROL MODULE (EBCM) (LEFT FRONT OF ENGINE COMPT) ELECTRONIC POWER STEERING SYSTEM GMLAN GRY WIRE HOT AT ALL TIMES HOT IN ON OR START IGN INSTRUMENT PANEL CLUSTER (IPC) IPC IPC CLASS 2 SERIAL DATA LEFT FRONT WHEEL SPEED SENSOR (AT LEFT FRONT HUB ASSEMBLY) LEFT REAR WHEEL SPEED SENSOR (AT LEFT REAR HUB ASSEMBLY) LOGIC LOW REF LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE MESSAGE CENTER MESSAGE REQUEST ORG/ WIRE PNK PNK WIRE PNK WIRE POWER DISTRIBUTION SYSTEM PPL RED WIRE RED/BLK WIRE RIGHT FRONT WHEEL SPEED SENSOR (AT RIGHT FRONT HUB ASSEMBLY) RIGHT REAR WHEEL SPEED SENSOR (AT RIGHT REAR HUB ASSEMBLY) SENS SIG SENSOR STEERING ANGLE SENSOR STRNG WHEEL POS SIG A STRNG WHEEL POS SIG B TAN WIRE TAN/BLK WIRE TO BRAKE PRESSURE MODULATOR VALVE (DIAGRAM 2 OF 2) TRACTION CONTROL IND ABS IND UNDERHOOD FUSE BLOCK (RIGHT REAR OF ENGINE COMPT) WHT WIRE YAW RATE YAW, LATERAL ACCELEROMETER SENSOR (BEHIND CENTER OF DASH) YEL WIRE

ACC/TCM FUSE 3 ACCESSORY VOLTAGE DATA BUS - DATA BUS + IGNITION 1 VOLTAGE DATA BUS + DATA BUS - AUTOMATIC TRANSMISSION BLK WIRE BLK/WHT WIRE COMPUTER DATA LINES SYSTEM ECM/TCM FUSE 11 GEAR HIGH TRANS TEMP SERVICE TRANS SHIFT TO PRK GMLAN (ECM) GRN WIRE GRY WIRE HEADS UP DISPLAY (HUD) (TOP LEFT SIDE OF DASH) HOT AT ALL TIMES HOT IN RUN OR START HUD CLASS 2 SERIAL DATA HUD MESSAGE CENTER IN SPEED SENSOR SIG BATTERY POSITIVE VOLT OUT SPEED SENSOR SIG INPUT/OUTPUT SPEED SENSORS (ISS/OSS) ASSEMBLY INSTRUMENT PANEL CLUSTER (IPC) INTERNAL MODE SWITCH (IMS) ASSEMBLY IPC CLASS 2 SERIAL DATA ISS SIGNAL BATTERY POS VOLT OSS SIGNAL LOGIC MESSAGE CENTER MESSAGE REQUEST (TCM) NCA WIRE ORG/BLK WIRE PARK/NEUTRAL SIG BATTERY POS VOLT GROUND STOP LAMP SW SIG TAP UP/DN SW SIG PNK WIRE POWER DISTRIBUTION SYSTEM PPL RED WIRE RED/WHT WIRE TAN WIRE TAN/BLK WIRE TAP UP/DWN GEAR TEHC MODULE ASSEMBLY UNDERHOOD FUSE BLOCK (RIGHT REAR OF ENGINE COMPT) UP SHIFT IND WHT WIRE YEL WIRE YEL/BLK WIRE

ABS/ MRRTD/ AFS FUSE 1 BLK WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT SIDE OF DASH) CLUSTER/ HUD FUSE 26 COMPUTER DATA LINES SYSTEM DK BLU/WHT WIRE DK GRN WIRE ELECTRONIC SUSPENSION CONTROL (ESC) MODULE (LEFT REAR OF LUGGAGE COMPT) GRY WIRE HOT AT ALL TIMES HOT IN ON OR START IPC CLASS 2 LEFT FRONT SUSPENSION DAMPER RIGHT REAR SUSPENSION DAMPER LEFT FRONT SUSPENSION POSITION SENSOR (TOP OF RIGHT FRONT SUSPENSION) LEFT REAR SUSPENSION POSITION SENSOR (AT TOP OF LEFT REAR SUSPENSION) LOGIC INSTRUMENT PANEL CLUSTER (IPC) LOW REFERENCE LOW REFERENCE LOW REFERENCE LOW REFERENCE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE MESSAGE CENTER MESSAGE REQUEST MRRTD FUSE 13 NCA WIRE ORG/BLK WIRE PNK WIRE POWER DISTRIBUTION SYSTEM PPL/WHT WIRE RED WIRE RED/WHT WIRE RIGHT FRONT SUSPENSION DAMPER RIGHT REAR SUSPENSION POSITION (AT TOP OF RIGHT REAR SUSPENSION) SERIAL DATA BUS (+) SERIAL DATA BUS (-) SERVICE RIDE CONTROL TAN WIRE TAN/BLK WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK (RIGHT REAR OF ENGINE COMPT)

AUTOMATIC TRANSMISSION PARK/ NEUTRAL SIGNAL BATT 3 FUSE 26 BATTERY BCM CLASS 2 SERIAL DATA BCM IGNITION MODE DATA SIGNAL BLK WIRE BLK/WHT WIRE BRAKE PEDAL POSITION SENSOR BRAKE POSITION SENSOR SIGNAL BRN WIRE CHARGING CIRCUIT COMPUTER DATA LINES SYSTEM CRANK RELAY 43 ECM FUSE 16 ECM HIGH SPEED GMLAN SERIAL DATA BUS - ENGINE CONTROL MODULE (ECM) (LOWER RIGHT REAR OF ENGINE COMPT) GROUND GRY WIRE HIGH SPEED GMLAN SERIAL DATA BUS + IGNITION MODE SWITCH INSTRUMENT PANEL CLUSTER (IPC) IPC CLASS 2 SERIAL DATA LOGIC LOW REF LT GRN WIRE LT GRN/WHT WIRE MESSAGE CENTER MESSAGE REQUEST NCA WIRE OFF ORG/BLK WIRE PARK/NEUTRAL SIGNAL PNK WIRE PPL PRESS BRAKE TO START RED WIRE RUN/CRANK RELAY 7 RUN/CRANK RELAY CTRL SPLICE PACK STARTER STARTER ENABLE RELAY CONTROL STARTER FUSE 30 TAN WIRE TAN/BLK WIRE TEHC MODULE ASSEMBLY UNDERHOOD FUSE BLOCK (RIGHT REAR OF ENGINE COMPT) YEL WIRE YEL/BLK WIRE

5936 743 5513 138 PPL OPEN SW SIG ACC VOLT CLASS 2 SER DATA REL/CLOSE SW SIG AUXILIARY POWER RELAY (BEHIND RIGHT SIDE OF DASH) BATT 1 FUSE 33 BATT 3 FUSE 26 BLK WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT SIDE OF DASH) BRK B FUSE 32 BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DECK LID CLOSE/PARK/ DK GRN WIRE DOOR CONTROLS CIRCUIT BREAKER 34 EXTERIOR REAR COMPARTMENT LID RELEASE SWITCH (LOWER LEFT OF REAR BUMPER) FLDG TOP/ TRUNK LATCH FUSE 44 FOLDING TOP MODULE (LEFT SIDE OF FOLDING TOP STORAGE COMPT) FUEL DOOR RELAY 52 FUEL DOOR RELEASE ACTUATOR FUEL DOOR RELEASE SWITCH GROUND DISTRIBUTION SYSTEM GRY WIRE HOT AT ALL TIMES I/P RELAY BLOCK (FRONT OF RIGHT FRONT FOOTWELL, BEHIND CARPET) INSTRUMENT PANEL CLUSTER INTERIOR REAR COMPARTMENT LID RELEASE SWITCH LOGIC LOGIC CLASS 2 SER DATA LT BLU WIRE LT GRN WIRE MESSAGE CENTER MSG REQ ORG/ WIRE ORG/BLK WIRE PNK RFA CLASS 2 SER DATA TRUNK REL SW SIG WIRE PNK WIRE POWER DISTRIBUTION SYSTEM POWER TOPS SYSTEM PPL REAR COMPARTMENT LID OPEN SWITCH REAR COMPARTMENT LID PULL- DOWN ACTUATOR REAR COMPARTMENT LID RELEASE/ CLOSE SWITCH (RIGHT SIDE OF REAR COMPT LID) RED WIRE RED/BLK WIRE RED/WHT WIRE REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) (RIGHT SIDE OF DASH) TAN WIRE TRANSMISSIONS SYSTEM TRUNK AJAR IND UNDERHOOD FUSE BLOCK (RIGHT REAR OF ENGINE COMPT) WHT WIRE WHT/BLK WIRE YEL WIRE

22 3 11 SDM CLASS 2 SERIAL DATA LEFT SEAT BELT SW LOW REF 5 66 67 PK LMP SW ON SIG LF TURN SIG SW RF TURN SIG SW 55 44 BCM CLASS 2 SERIAL DATA LF DR OPEN SW SIG AUDIBLE ALARM BCM HIGH SPD GMLAN SERIAL DATA BUS - BLK WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT SIDE OF DASH) BRN/WHT WIRE CLASS 2 (RCDLR) B+ CLASS 2 (SDM) COMPUTER DATA LINES SYSTEM CONSOLE) DK BLU WIRE DK BLU/WHT WIRE DRIVER DOOR LATCH AJAR CLOSED OPEN DRIVER SEAT BELT BUCKLE DRIVER SEAT BELT SWITCH ECM HIGH SPD GMLAN SERIAL DATA BUS - ENGINE CONTROL MODULE (ECM) (LOWER RIGHT REAR OF ENGINE COMPT) GRY WIRE HEAD INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (SDM) (UNDER CENTER INSTRUMENT PANEL CLUSTER (IPC) INTERNAL ANTENNA IPC CLASS 2 SERIAL DATA LEFT FRONT TIRE PRESSURE MONITOR SENSOR LEFT REAR TIRE PRESSURE MONITOR SENSOR LF TURN SIG SW LOGIC IPC LOW TIRE PRESSURE IND LT BLU/WHT WIRE LT GRN WIRE MESSAGE CENTER MESSAGE REQUEST NCA WIRE OFF AUTO PARK PNK RFA CLASS 2 SERIAL DATA WIRE PNK WIRE REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) (BEHIND RIGHT SIDE OF DASH) RF TURN SIG SW RIGHT FRONT TIRE PRESSURE MONITOR SENSOR RIGHT REAR TIRE PRESSURE MONITOR SENSOR SEAT BELT IND SOLID STATE SUPPLEMENTAL RESTRAINTS SYSTEM PNK PNK WIRE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TURN SIGNAL/ MULTIFUNCTION SWITCH WHT WIRE

11 12 13 PNK WIRE BANK 2 SENSOR 1 (IN LEFT EXHAUST PIPE, BEFORE CATALYTIC CONVERTER) BANK 2 SENSOR 2 (IN LEFT EXHAUST PIPE, AFTER CATALYTIC CONVERTER) BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT SIDE OF DASH) BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK GRN WIRE DK GRN/WHT WIRE ECM FUSE 16 ENGINE CONTROL MODULE (ECM) (LOWER RIGHT REAR OF ENGINE COMPT) ENGINE OIL LEVEL SWITCH (LOWER RIGHT SIDE OF ENGINE) GEN TURN ON SIG GRY WIRE HEATED OXYGEN HOT AT ALL TIMES IAT SENS SIG IGN 1 VOL INSTRUMENT PANEL CLUSTER (IPC) LOGIC CLASS 2 SER DATA B+ LOGIC LOW REF LT BLU WIRE LT GRN WIRE MAF SENS SIG MESSAGE CENTER MIL IND NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK 3 4 WIRE PNK PNK 6 7 WIRE PNK PNK PNK PNK WIRE PNK WIRE PPL PPL/WHT WIRE RADIO RUN/ CRANK RELAY 7 RUN/ CRANK RLY CTRL STARTING/ CHARGING SYSTEM STP LMP SW SIG VLT SIG TAN WIRE TAN/BLK WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK (RIGHT REAR OF ENGINE COMPT) VSS WHT WIRE YEL WIRE