Buick·Lacrosse·2012 Buick LaCrosse·Wiring
Wiring diagram

2012 Buick LaCrosse — power distribution

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Power distribution

175A 80A 87 10A 5A 80A 5A E 20A 25A 30A 5A 15A 30A 30A 25A 30A 20A 10A 10A 15A 7.5A 15A 30A 60A 30 30A 300A 250A D C B A 100A 100A 100A 100A BATTERY STARTER MOTOR GENERATOR STARTER/GENERATOR COOLANT PUMP RELAY STARTER RELAY HEADLAMP CONTROL MODULE ENGINE CONTROL MODULE POWER STEERING CONTROL MODULE CONTROL SOLENOID VALVE ASSEMBLY POWER STEERING CONTROL MODULE RIGHT HEADLAMP HORIZONTAL MOTOR LEFT HEADLAMP HORIZONTAL MOTOR ELECTRONIC BRAKE CONTROL MODULE SUNROOF CONTROL MODULE SUNROOF SUNSHADE MOTOR MODULE DRIVER SEAT LUMBAR SUPPORT SWITCH SEAT HEATING CONTROL MODULE SEAT MEMORY CONTROL MODULE LEFT HEADLAMP RIGHT HEADLAMP STARTER/GENERATOR CONTROL MODULE UNDERHOOD FUSE BLOCK STARTER/ GENERATOR CONTROL MODULE POWER STEERING CONTROL MODULE FUEL PUMP CONTROL MODULE ELECTRONIC BRAKE CONTROL MODULE EVAPORATIVE EMISSION VENT SOLENOID VALVE PASSENGER WINDOW MOTOR AUDIO AMPLIFIER RIGHT REAR WINDOW SWITCH LEFT REAR WINDOW SWITCH DRIVER WINDOW MOTOR BRAKE BOOSTER PUMP MOTOR RELAY BODY CONTROL MODULE PARKING BRAKE CONTROL MODULE X10 A X5 A X2 2 X6 A 52 X1 27 2 9 18 X3 2 X301 1 X4 A X3 A X2 A X1 A X6 A X5 A X7 A X2 2 A X1 X1 X1 X2 63 9 X2 1 10 X2 74 71 72 68 33 X1 36 70 42 38 X2 73 69 2 37 X3 X2 27 44 41 34 1 X4 B X1 X1 4 20 X4 X5 4 1 1 8 8 X700 X800 2 2 X600 2 2 X500 25 A 5 M X403 B 32 1 B X120 B 1 X118 1 3 X301 G A X398 F 1 1 1 X4 A 90 X200 89 RED RED/YEL RED/DK BLU RED/DK BLU RED/DK BLU RED/DK BLU RED/BRN RED/GRN RED/DK GRN RED/YEL RED/ RED/ RED/ RED/ DK BLU RED/ DK BLU RED/ RED RED/YEL RED RED/YEL RED/VIO RED/GRN RED/GRN LT GRN RED/YEL RED/YEL RED/YEL RED/WHT RED/YEL RED/WHT RED/WHT RED/WHT RED/WHT RED/WHT DK BLU RED/WHT RED/WHT DK BLU RED/GRY RED/VIO RED/GRY RED/VIO RED/BLU LT GRN RED/WHT RED/WHT RED/YEL RED/DK BLU RED/YEL RED/YEL RED/GRY RED/GRY RED/WHT RED/WHT (OR RED/LT GRN) RED/DK BLU RED/GRY RED/GRY RED/YEL RED RED RED RED/WHT RED/YEL RED/WHT RED/WHT RED/BLU RED/BLK RED RED ELECTRIC HYBRID PROPULSION POWER STEERING (3.6L) (2.4L) W/ MEMORY W/O MEMORY (IF EQUIPPED) (IF EQUIPPED) (IF EQUIPPED) (IF EQUIPPED) (IF EQUIPPED) (IF EQUIPPED) (2.4L) (3.6L) (IF EQUIPPED) (W/ ELECTRIC HYBRID PROPULSION) (PREMIUM AUDIO) BATTERY FUSE BLOCK F5UB FUSE F2UB FUSE F4UB FUSE F1UB FUSE F3UB FUSE F6UB FUSE F12UA FUSE F15UA FUSE F23UA FUSE F29UA FUSE F6UB FUSE F26UA FUSE F64UA FUSE F36UA FUSE F22UA FUSE F2UA FUSE 2 F1UA FUSE 1 F33UA FUSE F41UA FUSE F73UA FUSE F72UA FUSE F67UA FUSE F21UA FUSE F27UA FUSE F24UA FUSE F34UA FUSE F62UA FUSE F69UA FUSE F32UA FUSE F35UA FUSE (TOP OF BATTERY) (127 MM FROM BREAKOUT TO X398) (LEFT SIDE OF BATTERY) J300 J301 TO REAR BODY FUSE BLOCK (DIAGRAM 4 OF 5) TO INSTRUMENT PANEL FUSE BLOCK (DIAGRAM 2 OF 5) TO INSTRUMENT PANEL FUSE BLOCK (DIAGRAM 3 OF 5) TO REAR BODY FUSE BLOCK (DIAGRAM 4 OF 5) TO IGNITION MAIN RELAY (DIAGRAM 2 OF 5)
A 87 15A 30 30A 86 30 5A 87 50A 30 5A 30 86 85 H G K L I 10A 30A 10A 5A 5A 10A 15A 15A 7.5A 2A 30A 30A 87 F F E 10A 5A 5A 5A 7.5A 5A 5A 30A ENGINE CONTROLS IGNITION RELAY AUXILIARY TRANS- MISSION FLUID PUMP RELAY SECONDARY AIR INJECTION SOLENOID VALVE RELAY UNDERHOOD FUSE BLOCK INFLATABLE RESTRAINT SENSING & DIAGNOSTIC MODULE CONTROL SOLENOID VALVE ASSEMBLY ENGINE CONTROL MODULE AIR QUALITY SENSOR INSTRUMENT CLUSTER FUEL PUMP CONTROL MODULE HVAC CONTROL MODULE ACTIVE GRILLE AIR SHUTTER ACTUATOR STARTER/ GENERATOR CONTROL MODULE INSIDE REARVIEW MIRROR REARVIEW CAMERA FRONT FOG LAMP RELAY SECONDARY AIR INJECTION SOLENOID VALVE RELAY HEADLAMP LOW BEAM RELAY WINDSHIELD WIPER RELAY WINDSHIELD WASHER PUMP RELAY WINDSHIELD WIPER SPEED CONTROL RELAY REAR DEFOGGER RELAY COOLING FAN LOW SPEED RELAY HORN RELAY HEADLAMP HIGH BEAM RELAY SECONDARY AIR INJECTION PUMP RELAY COOLING FAN HIGH SPEED RELAY UNDERHOOD FUSE BLOCK INSTRUMENT PANEL FUSE BLOCK DATA LINK CONNECTOR INFLATABLE RESTRAINT SENSING & DIAGNOSTIC MODULE HVAC CONTROL MODULE BODY CONTROL MODULE INSTRUMENT CLUSTER INFO DISPLAY MODULE RADIO/ HVAC CONTROLS MULTIMEDIA PLAYER INTERFACE MODULE HEAD UP DISPLAY PASSENGER PRESENCE DETECTION MODULE 47 1 82 X1 X3 10 X3 20 9 X411 4 X1 X1 31 X108 X2 1 8 A6 X407 X201 23 40 47 32 41 25 42 44 45 20 43 X1 1 X1 1 10 4 1 X2 X307 41 X200 40 A 20 9 X1 3 X1 4 16 48 5 43 X1 37 3 6 2 1 X2 31 81 15 X2 X200 44 9 29 X2 X3 20 26 X2 X200 69 19 X1 51 13 12 15 4 17 X1 68 X200 23 14 X2 41 X1 17 2 5 3 1 3 2 VIO/BLK RED YEL/ BRN RED/ WHT RED/WHT VIO/BLK VIO/BLK RED/WHT RED/WHT VIO/ BLK VIO/ BLK VIO/ BLK VIO/ VIO/ VIO/ VIO/ RED/ DK BLU RED/ DK BLU RED/ DK BLU RED/ DK BLU RED/ GRY GRY LT GRN/VIO RED/VIO DK BLU RED/VIO RED/VIO RED/ WHT RED/BLK RED/WHT RED/BLK RED/BRN RED/DK GRN RED/DK BLU RED/WHT RED/WHT RED/WHT BLK BLK RED BLK BLK VIO/BLK VIO/BLK BLK VIO/BLK VIO/WHT VIO/GRY VIO/GRY VIO/LT GRN VIO/GRY VIO/GRY VIO/BLK VIO/BLK VIO/WHT VIO/BLK VIO/WHT VIO/WHT VIO/WHT BLK LT GRN/VIO W/ SIDE OBSTACLE DETECTION & SENSOR INDICATOR W/O REAR VIEW CAMERA W/ REAR VIEW CAMERA (NOT USED) (3.6L) (2.4L) (IF EQUIPPED) (IF EQUIPPED) (W/ HIGH INTENSITY DISCHARGE) (IF EQUIPPED) W/ AUDIO INTERFACE (IF EQUIPPED) (IF EQUIPPED) F44UA FUSE F66UA FUSE IGNITION MAIN RELAY F54UA FUSE F53UA FUSE F16UA FUSE F13UA FUSE F52UA FUSE F18UA FUSE F17UA FUSE F5UA FUSE F42UA FUSE F45UA FUSE F59UA FUSE F14UA FUSE F6UA FUSE F22DA FUSE F17DA FUSE F20DA FUSE F21DA FUSE F24DA FUSE F19DA FUSE F14DA FUSE F15DA FUSE F23DA FUSE F26DA FUSE (LEFT SIDE OF BATTERY) (205 MM FROM BREAKOUT TO INLINE TO LEFT FRONT DOOR) (LEFT FRONT OF ENGINE COMPT) (LEFT SIDE OF BATTERY) (LOWER LEFT SIDE OF DASH) (65 MM FROM BREAKOUT TO DASH) J102 J326 J206 G101 TO WINDSHIELD WASHER PUMP RELAY (DIAGRAM 2 OF 5) FROM F62U FUSE (DIAGRAM 1 OF 5) TO BODY CONTROL MODULE (DIAGRAM 5 OF 5) TO F55UA FUSE (DIAGRAM 5 OF 5) FROM ENGINE CONTROL MODULE RELAY (DIAGRAM 2 OF 5) FROM BATTERY FUSE BLOCK (DIAGRAM 1 OF 5) TO F18DA FUSE (DIAGRAM 3 OF 5) TO IGNITION SWITCH (DIAGRAM 5 OF 5) TO ACCESSORY DC/AC POWER INVERTER MODULE (DIAGRAM 3 OF 5)
B 15A 15A 15A 40A 25A 25A 30A 15A L B+ 110V AC GND GND 120 VAC INVERTER CTRL 20A 20A 15A 7.5A 10A I 25A REAR COMPARTMENT LID UNLATCH RELAY INSTRUMENT PANEL FUSE BLOCK JX201 TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE RADIO JX201 TRANSMISSION SHIFT LEVER TRANSMISSION SHIFT LEVER POSITION INDICATOR BODY CONTROL MODULE INSTRUMENT PANEL FUSE BLOCK JX201 BLOWER MOTOR CONTROL MODULE BODY CONTROL MODULE DRIVER SEAT ADJUSTER SWITCH SEAT MEMORY CONTROL MODULE PASSENGER SEAT ADJUSTER SWITCH X201 24 K M B M 6 X1 X2 X1 X2 21 26 34 92 49 33 36 3 3 2 1 37 38 97 X200 95 35 1 1 X301 X307 4 X2 X5 E X4 5 E X200 2 1 3 6 4 5 10 9 8 7 12 11 3 X2 1 3 X1 1 X1 15 X201 39 X200 1 1 12 X4 15 4 23 29 30 24 19 22 27 28 18 39 31 J M X201 19 A C C A X201 22 17 11 14 13 X1 44 X1 33 16 X200 RED BLK BLK BLK GRY/ RED/BLK RED/WHT RED RED/DK GRN RED/BLK RED/WHT RED/YEL RED/LT GRN RED RED/BLK RED/WHT RED/YEL RED/BLK RED/YEL RED/VIO RED/BRN RED/YEL RED/VIO RED RED RED DK BLU/WHT BLK RED/VIO RED DK BLU/WHT BLK RED BLK GRY/VIO GRY/VIO GRY/VIO GRY/VIO VIO GRY/VIO GRY/VIO GRY BRN/DK BLU BRN/DK BLU BLK BLK BLK BLK VIO VIO DK GRN/WHT VIO VIO DK GRN/WHT DK GRN/WHT VIO BLK GRY/GRN GRY/GRN RED RED/VIO RED RED/VIO RED/DK BLU RED/BLK RED/DK BLU (W/ ONSTAR) W/O MEMORY W/ MEMORY F16DA FUSE F18DA FUSE ACCESSORY RELAY F6DA FUSE F7DA FUSE F5DA FUSE F4DA FUSE CENTER CONTROL 2 ACCESSORY POWER RECEPTACLE CENTER CONTROL 1 ACCESSORY POWER RECEPTACLE ACCESSORY POWER RECEPTACLE 110V AC F11DA FUSE F13DA CIRCUIT BREAKER F12DA CIRCUIT BREAKER F9DA FUSE F2DA FUSE F3DA FUSE F10DA FUSE F8DA FUSE ACCESSORY DC/AC POWER INVERTER MODULE (LOWER LEFT SIDE OF DASH) (UNDER FRONT OF CENTER CONSOLE) (98 MM FROM BREAKOUT TO HEADLAMP SWITCH) (CENTER OF DASH) (UNDER FRONT OF CENTER CONSOLE) (CENTER OF DASH) (LOWER LEFT SIDE OF DASH) (UNDER FRONT OF CENTER CONSOLE) (CENTER OF DASH) J210 G201 G201 G201 5683 4640 5684 6807 1550 FROM F19DA FUSE (DIAGRAM 2 OF 5) FROM BATTERY FUSE BLOCK (DIAGRAM 1 OF 5) FROM INSTRUMENT PANEL FUSE BLOCK (DIAGRAM 2 OF 5)
87 30 85 86 87 85 30 J J D C 5A 30A 10A 10A 10A M 10A 86 7.5A 7.5A REAR BODY FUSE BLOCK STEERING COLUMN FUSE HOLDER STEERING WHEEL AIR BAG COIL BODY CONTROL MODULE PASSENGER CUSHION SEAT BLOWER MOTOR PASSENGER BACK SEAT BLOWER MOTOR REAR WINDOW SUNSHADE CONTROL MODULE DRIVER BACK SEAT BLOWER MOTOR DRIVER CUSHION SEAT BLOWER MOTOR STEERING WHEEL HEATING CONTROL MODULE REAR BODY FUSE BLOCK REAR DIFFERENTIAL CLUTCH CONTROL MODULE KEYLESS ENTRY CONTROL MODULE SUSPENSION CONTROL MODULE PASSENGER SEATBACK VIDEO DISPLAY DRIVER SEATBACK VIDEO DISPLAY X395 F X4 2 1 X1 2 20 26 18 6 X2 5 1 1 27 X307 1 X408 M X301 27 X1 M 1 22 X5 14 6 X2 36 X1 X1 32 X307 4 X301 4 C C C C 5 1 X5 6 X4 1 X200 46 25 VIO/ BRN VIO/ BRN VIO/ BRN VIO/ BRN VIO/ RED/ RED/ RED/ RED/ RED/ VIO/BLK VIO/BLK PNK RED/DK BLU RED/WHT RED/WHT RED/YEL RED/WHT RED/DK BLU RED/GRY RED/BRN RED/DK BLU RED/GRY RED/BRN RED/BLU RED/WHT RED/BRN RED/BLU LT GRN/VIO BRN/VIO BRN/VIO BLK BLK VIO/BLK VIO/BLK VIO/BLK RED/BLK VIO/BLK VIO/BLK BLK BLK BLK BLK BLK RED/WHT BRN W/ CLIMATE CONTROL W/O CLIMATE CONTROL W/ HEATED STEERING WHEEL W/ PASSENGER SEAT W/ DRIVER SEAT (IF EQUIPPED) W/ REAR SEAT ENTERTAINMENT W/ AWD W/ CONTINUOUSLY VARIABLE REAL TIME DAMPING (IF EQUIPPED) IGNITION MAIN RELAY IGNITION RUN RELAY F6RA FUSE F20RA FUSE HTD WHL FUSE F32RA FUSE F33RA FUSE F31RA FUSE 35RA FUSE F18RA FUSE (ON LEFT REAR WHEELHOUSE) (50 MM FROM BREAKOUT TO DRIVER SEAT BELT RETRACTOR PRETENSIONER) (BELOW LEFT REAR FUSE BLOCK) (ON LEFT REAR WHEELHOUSE) (475 MM FROM BREAKOUT TO SDM CONNECTOR) J404 J381 J389 J388 J323 G401 TO F31RA (DIAGRAM 4 OF 5) TO SPLICE J216 (DIAGRAM 5 OF 5) FROM BATTERY FUSE BLOCK (DIAGRAM 1 OF 5) FROM BATTERY FUSE BLOCK (DIAGRAM 1 OF 5) FROM IGNITION MAIN RELAY (DIAGRAM 4 OF 5)
5A 7.5A H ACC VOLT RUN/CRANK 1 VOLT LOW REFERENCE IGNITION MODE SW CTRL M G K START RUN OFF OFF RUN ACC START ACC START ACC OFF RUN START RUN START ACC OFF RUN OFF ACC KEYLESS ENTRY CONTROL MODULE BODY CONTROL MODULE UNDERHOOD FUSE BLOCK CONTROL SOLENOID VALVE ASSEMBLY ENGINE CONTROL MODULE PASSENGER WINDOW SWITCH GARAGE DOOR OPENER REAR PARKING ASSIST CONTROL MODULE DRIVER WINDOW SWITCH OUTSIDE REARVIEW MIRROR SWITCH LEFT SIDE OBJECT SENSOR RIGHT SIDE OBJECT SENSOR X1 X1 X406 F X407 A7 X1 7 7 1 X2 64 19 X500 B9 X397 23 X600 23 X500 X1 4 1 4 4 28 13 15 8 X1 8 20 5 2 17 X2 4 6 3 7 13 X200 28 20 21 X2 4 3 12 X1 11 X108 14 X1 70 15 X4 22 6 5 22 15 X3 1 3 4 6 2 RED/ LT GRN RED/LT GRN RED/ LT GRN RED/ LT GRN RED/LT GRN (OR RED) RED/ LT GRN RED/VIO RED/VIO RED/VIO RED/VIO RED/VIO RED/VIO RED/VIO LT GRN/ VIO LT GRN/ VIO LT GRN/ VIO LT GRN/ RED/VIO RED/VIO YEL BLK BRN DK BLU DK BLU BRN DK BLU BLK DK BLU LT GRN/YEL BLK/BRN LT GRN/YEL BLK/BRN LT GRN VIO/BLK VIO/YEL PPL PPL BLK VIO/YEL VIO/BLK PPL PPL PPL (OR VIO/BLK) PPL (OR VIO/YEL) VIO/YEL VIO/YEL VIO/YEL VIO LT GRN/VIO LT GRN/VIO VIO/YEL PPL (OR VIO/BLK) WHT PPL (OR VIO/YEL) WHT PPL PPL WHT WHT RED/DK BLU W/O KEYLESS ENGINE START W/ KEYLESS ENGINE START W/ SUNSHADE W/O SUNSHADE 3.6L 2.4L W/ MEMORY (IF EQUIPPED) (IF EQUIPPED) (IF EQUIPPED) (IF EQUIPPED) IGNITION SWITCH KEY IN IGNITION SWITCH ACC IND START IND OFF IND IGNITION MODE SWITCH F70UA FUSE F55UA FUSE (BOTTOM OF "A" PILLAR) (67 MM FROM BREAKOUT INTO TRANSMISSION CONNECTOR) (65 MM FROM BREAKOUT TO JX202 SPLICE PACK) (LEFT SIDE OF BATTERY) (BUMPER HARNESS, 151MM FROM BREAKOUT TO X406) J213 J216 J117 J332 J435 G203 FROM INSTRUMENT PANEL FUSE BLOCK (DIAGRAM 2 OF 5) INTERIOR LIGHTS SYSTEM FROM F42UA FUSE (DIAGRAM 2 OF 5) FROM REAR BODY FUSE BLOCK (DIAGRAM 4 OF 5) FROM UNDERHOOD FUSE BLOCK (DIAGRAM 2 OF 5)