Buick LeSabre VIII (2000-2005) ppl Wiring diagrams

AUTOMATIC TRANSAXLE AUTOMATIC TRANSAXLE INTERNAL MODE SWITCH (IMS) BLK WIRE BLK/WHT WIRE COMPUTER DATA LINES SYSTEM DK GRN WIRE HOT AT ALL TIMES LEFT BACK-UP LAMP LT BLU WIRE LT GRN WIRE POWERTRAIN CONTROL MODULE (IN AIR CLEANER HOUSING) PPL PPL SERIAL DATA PPL SERIAL DATA PRK/REV FUSE REAR FUSE BLOCK (UNDER LEFT REAR SEAT) RED WIRE REVERSE LAMP RELAY REVERSE LP RLY CTRL RIGHT BACK-UP LAMP SERIAL DATA SPLICE PACK TR SW A TR SW B WHT WIRE YEL WIRE

BLK WIRE CLASS 2 DATA CLASS 2 DATA COMPUTER DATA LINES SYSTEM DEFOGGER SWITCH HEATER-A/C CONTROL HOT AT ALL TIMES HOT IN ON, START LEFT "C" PILLAR) NCA WIRE PPL PPL 1807 PPL 1807 REAR FUSE BLOCK (UNDER LEFT REAR SEAT) REAR WINDOW DEFOGGER RR DEFOG FUSE RR DEFOG RELAY SOLID STATE WHT WIRE

5-VOLT REFERENCE AUTOMATIC LEVEL CONTROL (ALC) COMPRESSOR (ABOVE LEFT SIDE OF REAR AXLE) AUTOMATIC LEVEL CONTROL (ALC) SENSOR (ABOVE LEFT SIDE OF REAR AXLE) BLK WIRE BRN WIRE COMPRESSOR MOTOR DK GRN WIRE ELC FUSE ELC RELAY EXHAUST SOLENOID CONTROL GRY WIRE HOT AT ALL TIMES HOT IN LOW REFERENCE SIGNAL PPL REAR FUSE BLOCK (UNDER LEFT REAR SEAT) RED WIRE RUN WIRE SOLENOID VALVE WHT WIRE YEL WIRE

BLK WIRE BLK/WHT WIRE BRN/WHT WIRE DK BLU WIRE DK GRN WIRE DMR FUSE DRIVER'S OUTSIDE REARVIEW MIRROR (TURN SIGNAL INDICATOR) FUSE HEAD-UP DISPLAY MODULE (ON TOP LEFT SIDE OF DASH) HEADLAMP SW HEADLAMP SW SIGN PARK LAMP SW SIGN HEADLAMP SWITCH HEADLIGHTS SYSTEM HIGH MOUNTED STOP LAMP HOT AT ALL TIMES HOT IN RUN, START INSTRUMENT PANEL CLUSTER RIGHT TURN IND LEFT CORNERING LAMP LEFT FRONT MARKER LAMP LEFT FRONT PARK/ TURN SIGNAL LAMP LEFT LICENSE PLATE LAMP LEFT REAR MARKER LAMP LEFT REAR PARK LAMPS PPL LEFT TAIL/ STOP/TURN LAMP LEFT TURN IND LEFT TURN RIGHT TURN LH PARK LP FUSE LT BLU WIRE NCA WIRE NOT USED ORG/ WIRE PARK LP RELAY PASSENGER'S OUTSIDE REARVIEW MIRROR (TURN SIGNAL INDICATOR) PK LP ON INPUT PK LP SW PNK WIRE PPL PRK LP RLY CTRL PRK LP RLY CTRL REAR FUSE BLOCK (UNDER LEFT REAR OF SEAT) RH PARK LP FUSE RIGHT CORNERING LAMP RIGHT FRONT MARKER LAMP RIGHT FRONT PARK/ TURN SIGNAL LAMP RIGHT LICENSE PLATE LAMP RIGHT REAR MARKER LAMP RIGHT REAR PARK LAMPS RIGHT TAIL/ STOP/TURN LAMP SPLICE PACK STOPLAMP SWITCH (ON BRAKE PEDAL SUPPORT) TAN WIRE TSIG/ HAZ FUSE STOP LP FUSE TURN SIGNAL/ HAZAR SWITCH TURN SIGNAL/HAZARD FLASHER MODULE (UNDER LEFT SIDE OF DASH) UNDER- HOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE) COMPT) UNDER- HOOD LAMP WHT WIRE YEL WIRE

BLK WIRE BLK/WHT WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DASH INTEGRATION MODULE (DIM) (RIGHT SIDE OF DASH) DIMMER SWITCH DK GRN WIRE DRL RELAY FLASH TO PASS SWITCH FOG/ DRL FUSE GRN WIRE HDHI- BML FUSE HDHI- BMR FUSE HDLO- BML FUSE HDLO- BMR FUSE HDLP HI BM RELAY HDLP LO BM RELAY HEADLAMP BEAM SWITCH HEADLAMP DIMMER SWITCH HEADLAMP SWITCH HI LOW HOT AT ALL TIMES I/P FUSE INSTRUMENT PANEL INTEGRATION MODULE (BEHIND LEFT SIDE OF DASH) INTERIOR LAMP SWITCH LEFT HIGH BEAM HEAD- LAMP LEFT LOW BEAM HEAD- LAMP LIGHTS ON IND LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE ORG/ WIRE PK LP SWITCH PNK WIRE PNK/BLK WIRE PNK/WHT WIRE PPL PPL PPL PPL/WHT WIRE PRK LP RELAY REAR FUSE BLOCK (UNDER LEFT REAR SEAT) RIGHT HIGH BEAM HEAD- LAMP RIGHT LOW BEAM HEAD- LAMP SPLICE PACK TAN WIRE TWILIGHT DELAY SW UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPT) W/ CORNERING LAMPS WHT WIRE WIPER/ WASHER SYSTEM YEL WIRE YEL/BLK WIRE

BLK WIRE BLK/WHT WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DASH INTEGRATION MODULE (DIM) (RIGHT SIDE OF DASH) DIMMER SWITCH DK GRN WIRE DRL RELAY FLASH TO PASS SWITCH FOG/ DRL FUSE GRN WIRE HDHI- BML FUSE HDHI- BMR FUSE HDLO- BML FUSE HDLO- BMR FUSE HDLP HI BM RELAY HDLP LO BM RELAY HEADLAMP BEAM SWITCH HEADLAMP DIMMER SWITCH HEADLAMP SWITCH HI LOW HOT AT ALL TIMES HVAC CONTROL MODULE (BEHIND LEFT SIDE OF DASH) I/P FUSE INTERIOR LAMP SWITCH LEFT HIGH BEAM HEAD- LAMP LEFT LOW BEAM HEAD- LAMP LIGHTS ON IND LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE ORG/ WIRE PK LP SWITCH PNK WIRE PNK/BLK WIRE PNK/WHT WIRE PPL PPL PPL PPL/WHT WIRE PRK LP RELAY REAR FUSE BLOCK (UNDER LEFT REAR SEAT) RIGHT HIGH BEAM HEAD- LAMP RIGHT LOW BEAM HEAD- LAMP SPLICE PACK TAN WIRE TWILIGHT DELAY SW UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPT) W/ CORNERING LAMPS WHT WIRE WIPER/ WASHER SYSTEM YEL WIRE YEL/BLK WIRE

ABS IND CONTROL ABS IND. AIRBAG IND AIRBAG IND CONTROL BLK WIRE BLK/WHT WIRE BRAKE FLUID LEVEL SWITCH (IN MASTER CYLINDER RESERVOIR) BRAKE IND BRAKE IND CONTROL BRN/WHT WIRE CHECK OIL LEVEL IND CHECK OIL LEVEL IND CONTROL COMPUTER DATA LINES SYSTEM COOLANT TEMP IND COOLANT TEMP IND CONTROL CRUISE CONTROL SYSTEM CRUISE IND CRUISE IND CONTROL DATA LINES DATA LINES DK (BODY HARN, LEFT SIDE OF VEHICLE, 19.5 CM FROM PASS THROUGH GROMMET) DK (DASH HARN, 23.5 CM FROM INSTRUMENT CLUSTER PANEL) DK BLU WIRE DK GRN/WHT WIRE DRIVER INFORMATION CENTER (DIC) SWITCH ELECTRONIC BRAKE CONTROL MODULE (EBCM) (ON LEFT FRONT OF ENGINE COMPT) ENG/ MET FUEL GAUGE FUEL INFO GAUGE INFO GRN WIRE GROUND GROUND IGNITION BATTERY HEAD-UP DISPLAY CIRCUIT HI BEAM IN CONTROL HIGH BEAM IND HOT AT ALL TIMES HOT IN RUN OR START I/P FUSE IGN 1 FUSE ILLUMINATION INSTRUMENT CLUSTER LEFT TURN LEFT TURN IND LT BLU WIRE MIL CONTROL ODO TRIP OIL PRESSURE IND OIL PRESSURE IND CONTROL ORG/ WIRE PARK BRAKE SWITCH (ON TOP OF PARK BRAKE PEDAL ASSEMBLY) PNK WIRE PNK/BLK WIRE POWERTRAIN CONTROL MODULE (PCM) (IN AIR CLEANER HOUSING) PPL PPL/ PPL/ PPL/ REAR FUSE BLOCK (UNDER LEFT REAR SEAT) RESET+ RIGHT TURN RIGHT TURN IND RIGHT TURN LEFT TURN IGNITION SEAT BELT IND SEAT BELT IND CONTROL SECURITY IND SECURITY IND CONTROL SERVICE ENGINE SOON IND SPEEDOMETER GAUGE TACH SIGNAL TACHO- METER TAN WIRE TEMPERATURE GAUGE TRACTION OFF IND TRACTION OFF IND CONTROL TRACTION ON IND UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPT) VOLT IND VOLT IND CONTROL VSS SIGNAL WHT WIRE WINDSHIELD WASHER FLUID LEVEL SWITCH (IN WINDSHIELD WASHER FLUID RESERVOIR) YEL WIRE

1744 808 FUEL INJ 1 CONTROL SENSOR RETURN (EOP) 400 401 PPL ANTI-LOCK BRAKE SYSTEM 43 44 FUEL INJ 6 CONTROL SHIFT SOL B CONTROL 46 47 48 FUEL INJ 4 CONTROL FUEL INJ 5 CONTROL REFERENCE LOW 772 492 TRANS RANGE SW B MAF SENSOR INPUT BLK WIRE BLK/WHT WIRE BLU WIRE BONNEVILLE LE SABRE BRN/WHT WIRE BYPASS CKP SYNC SIG CMP OUTPUT CMP SIGNAL COMPUTER DATA LINES SYSTEM COOLING FANS SYSTEM CRUISE CONTROL SYSTEM DESIRED TORQUE INPUT CRUISE DISABLE/INHIBIT FUEL INJ 2 CONTROL DIS FUSE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/ WHT WIRE DK GRN/WHT WIRE ECT SENSOR GROUND MAP SENSOR GROUND GROUND GRY WIRE HOT AT ALL TIMES HOT IN RUN, START IAC COIL B HIGH 39 40 41 42 IGN CONTROL IGN VOLTAGE IGNITION IGNITION BATTERY IGNITION CONTROL MODULE (ICM) (ON TOP LEFT FRONT OF ENG) IGNITION SWITCH (PIGTAILED FOR LE SABRE) INSTRUMENT CLUSTER SYSTEM (VEHICLE SPEED) KNOCK SENSOR (KS) BANK 2 (ON LOWER REAR OF ENG BLOCK, NEAR OIL FILTER) LOCK OFF LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE MAP SENSOR +5 V MASS AIRFLOW (MAF) SENSOR (TOP OF THROTTLE BODY) NOT USED ORG/ WIRE ORG/BLK WIRE PCM GROUND IAT SENSOR GROUND PNK (OR PNK) WIRE PNK (OR PNK/BLK) WIRE PNK PNK 9 10 WIRE PNK WIRE POWERTRAIN CONTROL MODULE (PCM) (IN AIR CLEANER HOUSING) PPL PPL PPL PPL TCC SWITCH INPUT EGR POS SENS GROUND EGR CONTROL GROUND PPL/WHT WIRE PURGE SOLENOID (TOP OF ENGINE) RED/BLK WIRE REF LOW RUN WIRE SHIFT SOL A CONTROL HI SPEED COOL FAN LO SPEED COOL FAN CMP INPUT TAN WIRE TAN/BLK WIRE TRANS FUSE UNDER- HOOD FUSE BLOCK PCM BATT FUSE VEHICLE SPEED SENSOR (RIGHT FRONT OF TRANSAXLE) EVAPORATIVE EMISSIONS CANISTER WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

2-3 SHIFT SOL 1-2 SHIFT SOL AUTOMATIC TRANSAXLE AUTOMATIC TRANSAXLE FLUID PRESSURE MANUAL VALVE POSITION SWITCH AUTOMATIC TRANSAXLE FLUID TEMPERATURE SENSOR AUTOMATIC TRANSAXLE INPUT SHAFT SPEED SENSOR AUTOMATIC TRANSAXLE INTERNAL MODE SWITCH BLK WIRE BLK/ WHT WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION (CMP) SENSOR (FRONT OF ENG, BELOW WATER PUMP) CRANKSHAFT POSITION DK BLU/WHT WIRE FUEL INJEC- TORS GRN WIRE GRY WIRE GRY/WHT WIRE HOT IN RUN, START IGN 1 FUSE INJR 1 FUSE INJR 2 FUSE LT BLU WIRE LT BLU/ BLK WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/ BLK WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE ORG/BLK WIRE PNK (OR WIRE PNK PNK 9 10 WIRE PNK WIRE PNK/BLK WIRE PPL PPL CRUISE CONTROL SYSTEM PPL PRESSURE CONTROL SOL REAR FUSE BLOCK RED WIRE RED/BLK WIRE TAN WIRE TCC PWM SOL TCC RELEASE SWITCH TCC/ CRUISE RELEASE SWITCH (NEAR BRAKE PEDAL) UNDER- HOOD FUSE BLOCK WHT DK GRN/ WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

5 VOLT REFERENCE A 5 VOLT REFERENCE A 5 VOLT REFERENCE B SENSOR GROUND A/C COMP RELAY CONTROL A/C SYSTEM A/T FLUID TEMP INPUT FUEL LEVEL INPUT ANTI-LOCK BRAKE SYSTEM BLK WIRE BLK/WHT WIRE BOOST CONTROL SOLENOID (VIN 1) BRN WIRE BRN/WHT WIRE CRUISE CONTROL SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENG OIL LEVEL SW INPUT CRUISE STATUS BRAKE PEDAL SW OUT GEN TERM L CONTROL ENGINE COOLANT TEMPERATURE (ECT) SENSOR EVAP SOLENOID CONTROL FUEL PUMP RELAY CONTROL EGR VALVE CONTROL MIL CONTROL EVAPORATIVE EMISSIONS (EVAP) CANISTER VENT VALVE FUEL INJ 3 CONTROL FUEL TANK PRESS SENSOR TRANS RANGE SW C INPUT FUEL TANK SENDER GRY (OR GRY/BLK) WIRE GRY WIRE HEATED OXYGEN BANK 1 SENSOR 1 (IN RIGHT EXHAUST MANIFOLD) HEATED OXYGEN BANK 1 SENSOR 2 (REAR OF CATALYTIC CONVERTER) HOT IN RUN AND START HOT IN RUN, START IAC COIL A HIGH TACH SIGNAL DELIVERED TORQUE CONTROL IAC COIL A LOW PRESS SOL HIGH CONTROL PRESS SOL LOW CONTROL IAC COIL B LOW IAT SENSOR INPUT IDLE AIR CONTROL (IAC) VALVE (ON THROTTLE BODY ASSEMBLY) IGN 1 FUSE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE NCA WIRE OIL PRESSURE SIGNAL OXY SEN FUSE PCM IGN FUSE PNK (OR PNK/BLK) WIRE PNK 1 2 3 4 5 6 7 8 9 10 11 12 WIRE PNK WIRE PNK/BLK WIRE PNK/WHT WIRE POWERTRAIN CONTROL MODULE (PCM) (IN AIR CLEANER HOUSING) PPL PPL PPL REAR FUSE BLOCK RED WIRE RED/BLK WIRE STARTER RELAY OUTPUT BOOST SOLENOID CONTROL TCC PWM SOL CONTROL 1724 418 STARTING/CHARGING SYSTEM TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TOP OF TRANSMISSION) TRANS RANGE SW A INPUT TRANS TCC RELEASE SW IN UNDER- HOOD FUSE BLOCK VENT SOL FUSE WHT WIRE YEL WIRE YEL/BLK WIRE