Buick·Lacrosse·2005 Buick LaCrosse·Wiring
Wiring diagram

2005 Buick LaCrosse — power distribution

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Power distribution

1 2 1 2 3 4 4 3 A 5A 50A 10A 10A 10A 10A 25A 10A 10A 15A 10A 15A 30 15A 25A 40A 30A 40A 25A 20A 15A 20A 25A 20A 50A 40A (8 GA- BLK/WHT) 10A UNDERHOOD FUSE BLOCK BATTERY STARTER GENERATOR BODY CONTROL MODULE (BCM) ELECTRONIC BRAKE CONTROL MODULE (EBCM) BLOWER MOTOR CONTROL PROCESSOR ENGINE CONTROL MODULE (ECM) POWERTRAIN CONTROL MODULE (PCM) SECONDARY AIR INJECTION (AIR) PUMP RELAY R/ DEFOG RELAY PASSENGER SEAT ADJUSTER SWITCH OUTSIDE REAR VIEW MIRROR SWITCH DRIVER SEAT LUMBAR SWITCH DRIVER SEAT ADJUSTER SWITCH BODY CONTROL MODULE (BCM) SUNROOF MOTOR/ ACTUATOR FRONT PASSENGER WINDOW SWITCH DRIVER HEATED SEAT RELAY INSIDE REARVIEW MIRROR DRIVER WINDOW SWITCH PASSENGER FRONT HEATED SEAT RELAY PRK/ LAMP RELAY I/P FUSE BLOCK DATA LINK CONNECTOR (DLC) BODY CONTROL MODULE (BCM) RADIO PARK SWITCH VEHICLE COMMUNICATION INTERFACE MODULE (VCIM) AUDIO AMPLIFIER EVAPORATIVE EMISSION (EVAP) CANISTER VENT SOLENOID HVAC CONTROL MODULE INSTRUMENT PANEL CLUSTER (IPC) REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) DIGITAL RADIO RECEIVER INFLATABLE RESTRAINT FRONT PASSENGER PRESENCE SYSTEM (PPS) MODULE B C2 B6 C1 1 C10 D 36 C2 C1 A1 6 3 D1 C4 A3 F6 C1 B10 C2 E4 F9 C2 C1 F5 C1 A A2 16 15 C1 C1 E B1 C1 16 1 C1 F7 E6 C5 M1 N1 E8 C1 50 52 12 C1 51 C2 D9 C1 20 C1 6 C1 D12 N1 14 13 D2 K3 J3 F3 C A C2 E 13 C2 E2 F2 F1 M1 N3 M3 C2 49 A5 C1 F10 46 G A D A2 A2 C2 E5 E12 E9 D10 F9 F5 B1 C1 C1 D5 C5 C4 C2 A1 ORG ORG YEL WHT ORG ORG ORG ORG ORG ORG YEL YEL YEL ORG ORG ORG YEL YEL YEL ORG YEL YEL YEL BLK ORG ORG ORG ORG YEL YEL ORG ORG RED ORG ORG ORG ORG ORG ORG ORG RED ORG ORG ORG ORG ORG ORG ORG BLK ORG RED RED RED RED RED RED ORG ORG YEL ORG ORG ORG ORG ORG ORG ORG RED RED RED RED RED RED 3.8L 3.6L (W/ ABS) (SULEV) W/ SUNROOF W/O SUNROOF W/O DRIVER POWER LUMBAR CONTROL SEAT W/ DRIVER POWER LUMBAR CONTROL SEAT W/O DIGITAL AUDIO SYSTEM W/O DIGITAL AUDIO SYSTEM W/ DIGITAL AUDIO SYSTEM (W/ 9 SPEAKER SYSTEM) AUTOMATIC A/C MANUAL A/C FUSIBLE LINK BATT MAIN 1 FUSE 26 PCM/ ETC FUSE 16 AIR PUMP FUSE 25 BATT MAIN 3 FUSE 28 ABS SOL FUSE 19 BATT MAIN 4 FUSE 30 WASHER/ RVC FUSE 6 BATT MAIN 2 FUSE 27 ABS MTR FUSE 31 PWR/ SEAT CIRCUIT BREAKER HTD/ SEAT FUSE DR/LCK TRUNK FUSE PWR/ MIR FUSE TURN/ HAZRD FUSE PWR WNDW CIRCUIT BREAKER S/ROOF FUSE RAP RELAY PRK/LAMP FUSE CANISTER FUSE PRK/ SWITCH FUSE HVAC FUSE CHMSL/ BKUP FUSE INT ILLUM FUSE ONSTAR/ ALDL FUSE RDO AMP FUSE RFA/ MOD FUSE CLSTR FUSE (MOUNTED TO RIGHT STRUT TOWER) (IN HEADLINER HARN, AT RIGHT FRONT OF HEADLINER) (BELOW DRIVER SEAT, 36 CM FROM C311) (BEHIND RIGHT SIDE OF DASH) S394 S331 S395 S400 TO AUX PWR FUSE 10 (DIAGRAM 2 OF 4)
1 2 2 1 A 10A SIGNAL SWITCH IGNITION KEY IN VOLTAGE IGNITION 3 IGNITION 1 VOLTAGE CRANK VOLTAGE REFERENCE 12 VOLT C D C 10A 2A 10A B 10A RUN OFF ACC LOCK START RUN START OFF LOCK ACC START RUN OFF LOCK ACC 10A 10A 10A 25A UNDERHOOD FUSE BLOCK CRANK RELAY 48 I/P FUSE BLOCK TRANSMISSION CONTROL MODULE (TCM) YAW & LATERAL ACCELERATION SENSOR STEERING ANGLE SENSOR ELECTRONIC BRAKE CONTROL MODULE BODY CONTROL MODULE POWERTRAIN CONTROL MODULE (PCM) ENGINE CONTROL MODULE (ECM) BODY CONTROL MODULE (BCM) A/C COMP RELAY INSIDE AIR TEMPERATURE SENSOR INFLATABLE RESTRAINT PASSENGER AIRBAG ON/OFF INDICATOR TRANSMISSION CONTROL MODULE (TCM) I/P FUSE BLOCK INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL INFLATABLE RESTRAINT SENSING & DIAGNOSTIC MODULE ELECTRONIC COMPASS MODULE 1-2 SHIFT SOLENOID VALVE TORQUE CONVERTER CLUTCH (TCC) SOLENOID VALVE 2-3 SHIFT SOLENOID VALVE TRANSMISSION CONTROL MODULE (TCM) ENGINE CONTROL MODULE (ECM) POWERTRAIN CONTROL MODULE (PCM) POWERTRAIN CONTROL MODULE (PCM) REAR OBJECT SENSOR CONTROL MODULE HVAC CONTROL MODULE INFLATABLE RESTRAINT FRONT PASSENGER PRESENCE SYSTEM MODULE AUTOMATIC TRANSMISSION VOICE RECORDER/ CRUISE SWITCH ASSEMBLY 13 2 4 31 24 C2 11 C2 58 24 C1 C2 3 B A B9 C2 B4 C1 B A C1 32 A5 C1 A2 C100 E12 C1 C1 C2 2 C2 B9 1 A9 C275 D C2 D2 D11 C1 B7 A7 A6 A4 C277 D 13 1 A10 1 C1 40 E A A A E8 E7 C5 C6 A5 A6 F12 C1 18 F9 C1 C2 B6 4 6 3 7 5 23 22 21 25 B3 C1 3 A12 A7 C8 A8 C7 M4 C1 D1 C1 19 B9 8 3 2 A9 A11 C2 B5 D9 BRN PNK YEL YEL PNK BRN BRN BRN BRN BRN PNK PNK BLK ORG BLK ORG BLK BLK NCA ORG NCA ORG BRN BRN BLK/WHT BLK/WHT WHT PNK PNK PNK PNK PNK YEL YEL BLK BLK PNK LT GRN RED RED RED RED BRN BRN BRN WHT/ BLK BLK WHT/ BRN PNK YEL BLK WHT/ BLK/ BLK/WHT PNK PNK PNK PNK PNK PNK PNK PNK (3.6L) (W/ ABS) (W/ ABS) (W/ ABS) 3.6L 3.8L 3.6L 3.8L AUTOMATIC A/C 3.6L 3.8L (3.6L) W/ PARK ASSIST AUTOMATIC A/C MANUAL A/C G113 (3.8L) (3.6L) G115 G302 G200 G202 IGN 1 RELAY PCM FUSE 15 AUX TCM FUSE 8 ABS FUSE 23 AUX PWR FUSE 10 CIGAR LIGHTER AUXILIARY POWER OUTLET IGNITION SWITCH KEY IN IGNITION SWITCH P/TRAIN RELAY 40 A/C CLUTCH FUSE 13 SIR FUSE 9 DISPLAY FUSE 18 TRANS SOL FUSE 21 CRUISE FUSE (MOUNTED TO RIGHT STRUT TOWER) (UNDER FLOOR CONSOLE) (CENTER OF DASH CROSS BEAM, BEHIND RADIO) (LOWER LEFT FRONT OF ENGINE, ON TRANSMISSION STUD, NEAR STARTER) (MOUNTED TO BANK 1 CYLINDER HEAD, ABOVE EXHAUST MANIFOLD) (IN RIGHT DOOR SILL, FORWARD OF RIGHT FRONT SEAT) (LEFT SIDE OF DASH, AT BASE OF STEERING COLUMN) (BEHIND RIGHT SIDE OF DASH) (3.8L) S101 (3.6L) S116 S213 S406 S200 S214 S115 FROM WASHER/RVC FUSE 6 (DIAGRAM 1 OF 4) TO A/C CLUTCH FUSE (DIAGRAM 2 OF 4) FROM IGN 1 RELAY (DIAGRAM 2 OF 4) TO FAN 2 FUSE (DIAGRAM 3 OF 4) TO ETC FUSE 17 (DIAGRAM 3 OF 4)
E 85 30 85 10A D 30A 30A 10A 15A 40A 25A 15A B 15A HEATED OXYGEN SENSOR (HO2S) 2 MASS AIR FLOW (MAF) SENSOR/ INTAKE AIR TEMPERATURE (IAT) MASS AIR FLOW (MAF) SENSOR/ INTAKE AIR TEMPERATURE (IAT) EVAPORATIVE EMISSION (EVAP) CANISTER PURGE SOLENOID SECONDARY AIR INJECTION (AIR) PUMP RELAY SECONDARY AIR INJECTION (AIR) SOLENOID RELAY ENGINE CONTROL MODULE (ECM) THROTTLE ACTUATOR CONTROL (TAC) MODULE UNDERHOOD FUSE BLOCK HI BEAM RELAY 34 FAN 3 RELAY 43 FUEL PP RELAY 41 FAN 1 RELAY 42 CRANK RELAY 48 HEADLAMP MODULE WIPER RELAY 45 FOG LP RELAY 36 FAN 2 RELAY 46 HORN RELAY 39 E C1 E8 B A F8 2 C2 17 1 G19 G20 A12 K19 K18 K15 A18 A19 C9 C10 M2 K4 E14 K7 K8 18 C11 PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK PNK 3.8L 3.6L SULEV 3.8L 3.6L ETC FUSE 17 EMISSION FUSE 12 STARTER FUSE 33 HORN FUSE 11 WIPER/WS FUSE 5 FOG LPS FUSE 7 FAN 1 FUSE 29 FUEL PP FUSE 22 FAN 2 FUSE 32 (ENGINE HARNESS, 5CM FROM SECONDARY AIR INJECTION (AIR) PUMP RELAY BREAKOUT, TOWARD C100) (MOUNTED TO RIGHT STRUT TOWER) S117 TO ELEK FUSE 24 (DIAGRAM 4 OF 4) FROM P/TRAIN RELAY 40 (DIAGRAM 2 OF 4) FROM P/TRAIN RELAY 40 (DIAGRAM 2 OF 4)
15A 15A 15A E 15A 15A 15A UNDERHOOD FUSE BLOCK HEATED OXYGEN SENSOR (HO2S) SENSOR 1 HEATED OXYGEN SENSOR (HO2S) SENSOR 2 IGNITION CONTROL MODULE (ICM) FUEL INJECTOR 3 FUEL INJECTOR 4 FUEL INJECTOR 2 FUEL INJECTOR 6 FUEL INJECTOR 1 FUEL INJECTOR 5 EVAPORATIVE EMISSIONS (EVAP) CANISTER PURGE SOLENOID VALVE CAMSHAFT POSITION (CMP) ACTUATOR SOLENOID EXHAUST BANK 1 CAMSHAFT POSITION (CMP) ACTUATOR SOLENOID INTAKE BANK 2 HEATED OXYGEN SENSOR (HO2S) SENSOR 1 CAMSHAFT POSITION (CMP) ACTUATOR SOLENOID EXHAUST BANK 2 CAMSHAFT POSITION (CMP) ACTUATOR SOLENOID INTAKE BANK 1 FUEL INJECTOR 3 FUEL INJECTOR 4 IGNITION COIL 4 FUEL INJECTOR 1 IGNITION COIL 2 IGNITION COIL 6 IGNITION COIL 3 FUEL INJECTOR 6 IGNITION COIL 1 FUEL INJECTOR 2 IGNITION COIL 5 FUEL INJECTOR 5 1 1 1 1 1 3 A A A 2 2 2 A A 2 2 A 2 C1 D11 A11 A7 C1 D11 D D A A A11 A A A A A7 P BLK PNK/ BLK PNK/ BLK PNK/ PNK/ BLK BLK PNK/ PNK/ BLK BLK PNK/ BLK PNK/ PNK/BLK WHT WHT WHT BLK PNK/ WHT PNK/ BLK BLK PNK/ PNK/BLK PNK/ BLK PNK WHT WHT WHT BLK PNK/ BLK PNK/ BLK PNK/ WHT PNK NCA PNK PNK NCA PNK PNK PNK PNK PNK PNK PNK 3.8L 3.6L FUEL INJ FUSE 20 ELEK IGN FUSE 24 02 SSR FUSE 14 FUEL INJ FUSE 20 ELEK IGN FUSE 24 02 SSR FUSE 14 (MOUNTED TO RIGHT STRUT TOWER) (IN ENGINE WIRING HARNESS, ON TOP OF ENGINE, 8 CM FROM FUEL INJECTOR 3) (IN ENGINE WIRING HARN, 5 CM FROM IGNITION COIL 1) (IN ENGINE WIRING HARN, NEAR INJECTOR COILS) (IN FUEL INJECTOR WIRING HARN) (IN FUEL INJECTOR WIRING HARN) S109 S106 S103 S104 S108 FROM EMISSION FUSE 12 (DIAGRAM 3 OF 4)