Cadillac XLR I (2003-2009) ipc class 2 serial data 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

11 12 PPL 5879 5878 PNK WIRE ACCA/ DRIV DR SW FUSE 21 IGNITION SW/INTR SENS FUSE 23 BATT+ VOLT BLK WIRE BLU WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT SIDE OF DASH) LOGIC BRN WIRE CLASS 2 (BCM) CLASS 2 DATA DK BLU WIRE DOOR LTCH CTRL DR AJAR SW SIG DR OPEN SW SIG DRIVER DOOR LOCK INDICATOR DRIVER DOOR LOCK SWITCH UN- LOCK LOCK DRIVER DOOR MODULE (DDM) (IN DRIVER'S DOOR) DRIVER DOOR SWITCH ASSEMBLY (DDSA) DRIVER EXTERIOR DOOR HANDLE SWITCH (IN DRIVER'S DOOR HANDLE ASSEMBLY) DRIVER INTERIOR DOOR HANDLE SWITCH (ON DRIVER'S INNER DOOR PANEL) FRONT PASSENGER DOOR LOCK SWITCH UN- LOCK LOCK FRONT PASSENGER DOOR MODULE (FPDM) (IN FRONT DOOR) GRY WIRE GRY/BLK WIRE HORN REL CNTRL HORNS SYSTEM HOT AT ALL TIMES IGN 1 VOLT INSTRUMENT PANEL CLUSTER (IPC) IPC CLASS 2 SERIAL DATA LCD LAMP UNLOCK SIG LOCK SIG GROUND BATTERY SERIAL DATA LOGIC LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PASSENGER DOOR LOCK INDICATOR PASSENGER EXTERIOR DOOR HANDLE SWITCH (IN DRIVER'S DOOR HANDLE ASSEMBLY) PASSENGER INTERIOR DOOR HANDLE SWITCH PK LAMP REL PNK WIRE PPL PPL/WHT WIRE REAR COMPARTMENT LID PULLDOWN ACTUATOR (AT UPPER CENTER OF LUGGAGE COMPARTMENT) RED/WHT WIRE SECURITY IND TAN WIRE TAN/WHT WIRE TRK AJAR SW SIG TRUNK, TAILGATE, FUEL DOORS SYSTEM WHT 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

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

1 2 3 4 5 6 7 LOW REF GROUND BATT SUPP VOL 1250 342 (RIGHT SIDE OF ENGINE COMPT) BLK WIRE CHECK GAUGES COMPUTER DATA LINES SYSTEM COOLANT LEVEL SWITCH (LEFT SIDE OF ENGINE COMPT) COOLANT OVER TEMP ENGINE HOT/STOP ENGINE LOW COOLANT COOLFAN FUSE 25 COOLING FAN MOTOR (LOWER FRONT OF ENGINE) DK GRN WIRE ENGINE CONTROL MODULE (ECM) (LOWER RIGHT REAR OF ENGINE COMPT) ENGINE COOLANT TEMPERATURE (ECT) SENSOR (REAR SIDE OF RIGHT CYLINDER HEAD) FAN CONTROL MODULE (AT LOWER RIGHT OF COOLING FAN) GRY WIRE HOT AT ALL TIMES HUD CLASS 2 SERIAL DATA IGN MESSAGE REQUEST INSTRUMENT PANEL CLUSTER (IPC) MESSAGE CENTER IPC CLASS 2 SERIAL DATA LOGIC LOGIC HVAC CONTROL MODULE (AT CENTER OF DASH) MESSAGE REQUEST IGN RED WIRE RED/BLK WIRE RED/ORG WIRE SERIAL DATA IND CTRL SPEED CTRL TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (RIGHT REAR OF ENGINE COMPT) WHT WIRE YEL WIRE YEL/BLK WIRE

11 12 PPL 5879 5878 PNK WIRE ACCA/ DRIV DR SW FUSE 21 IGNITION SW/INTR SENS FUSE 23 BATT+ VOLT BLK WIRE BLU WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT SIDE OF DASH) LOGIC BRN WIRE CLASS 2 (BCM) CLASS 2 DATA DK BLU WIRE DOOR LTCH CTRL DR AJAR SW SIG DR OPEN SW SIG DRIVER DOOR LOCK INDICATOR DRIVER DOOR LOCK SWITCH UN- LOCK LOCK DRIVER DOOR MODULE (DDM) (IN DRIVER'S DOOR) DRIVER DOOR SWITCH ASSEMBLY (DDSA) DRIVER EXTERIOR DOOR HANDLE SWITCH (IN DRIVER'S DOOR HANDLE ASSEMBLY) DRIVER INTERIOR DOOR HANDLE SWITCH (ON DRIVER'S INNER DOOR PANEL) FRONT PASSENGER DOOR LOCK SWITCH UN- LOCK LOCK FRONT PASSENGER DOOR MODULE (FPDM) (IN FRONT DOOR) GRY WIRE GRY/BLK WIRE HORN REL CNTRL HORNS SYSTEM HOT AT ALL TIMES IGN 1 VOLT INSTRUMENT PANEL CLUSTER (IPC) IPC CLASS 2 SERIAL DATA LCD LAMP UNLOCK SIG LOCK SIG GROUND BATTERY SERIAL DATA LOGIC LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PASSENGER DOOR LOCK INDICATOR PASSENGER EXTERIOR DOOR HANDLE SWITCH (IN DRIVER'S DOOR HANDLE ASSEMBLY) PASSENGER INTERIOR DOOR HANDLE SWITCH PK LAMP REL PNK WIRE PPL PPL/WHT WIRE REAR COMPARTMENT LID PULLDOWN ACTUATOR (AT UPPER CENTER OF LUGGAGE COMPARTMENT) RED/WHT WIRE SECURITY IND TAN WIRE TAN/WHT WIRE TRK AJAR SW SIG TRUNK, TAILGATE, FUEL DOORS SYSTEM WHT WIRE

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

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 ON IND CTRL OFF IND CTRL 7 8 9 10 11 PPL AIR BAG INDICATOR BLK WIRE BLK/PNK WIRE BLK/TAN WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT SIDE OF DASH) CLASS 2 (SDM) DATA LINK CONNECTOR (LEFT SIDE OF DASH) DK BLU WIRE DK GRN WIRE GRY WIRE HOT W/ RUN/ CRANK RELAY ENERGIZED INFLATABLE RESTRAINT FRONT PASSENGER SEAT BELT TENSION SENSOR INFLATABLE RESTRAINT I/P MODULE (RIGHT SIDE OF DASH) INSIDE REARVIEW MIRROR INSTRUMENT PANEL CLUSTER IPC CLASS 2 SERIAL DATA ISRV M/HVAC FUSE 14 LOGIC LOW REF LOW REF VOLTAGE REF LT BLU WIRE NCA WIRE ORG/ WIRE PNK 1 2 3 WIRE PNK IGNITION 1 WIRE PNK SERIAL DATA WIRE PNK WIRE PPL PPL SENS SIG GROUND SENS SIG VOLTAGE REF PPL SHORTING BAR PPS OFF IND PPS ON IND SHORTING BAR SPLICE PACK STAGE 1 STAGE 2 TAN WIRE WHT 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