POWER DISTRIBUTION – Buick LaCrosse CXL 2005 – SYSTEM WIRING DIAGRAMS

POWER DISTRIBUTION

Power Distribution Wiring Diagram (1 of 4) for Buick LaCrosse CXL 2005

List of elements for Power Distribution Wiring Diagram (1 of 4) for Buick LaCrosse CXL 2005:

• (below driver seat, 36 cm from c311) s331
• (in headliner harn, at right front of headliner) s394
• (mounted to right strut tower) underhood fuse block
• 3.6l
• 3.8l
• A1 c1
• Abs mtr fuse 31 40a
• Abs sol fuse 19 25a
• Air pump fuse 25 50a
• Audio amplifier (w/ 9 speaker system)
• Automatic a/c
• B10
• Batt main 1 fuse 26 40a
• Batt main 2 fuse 27 50a
• Batt main 3 fuse 28 40a
• Batt main 4 fuse 30 30a
• Battery
• Blower motor control processor
• Body control module (bcm)
• C1 b1
• C1 d12
• C10
• C2 d9
• C2 e2
• C2 f9
• C4 c2
• Canister fuse 10a
• Chmsl/ bkup fuse 15a
• Clstr fuse 10a
• D10
• Data link connector (dlc)
• Digital radio receiver
• Dr/lck trunk fuse 15a
• Driver heated seat relay
• Driver seat adjuster switch
• Driver seat lumbar switch
• Driver window switch
• E c1
• E c2
• E12
• Electronic brake control module (ebcm) (w/ abs)
• Engine control module (ecm)
• Evaporative emission (evap) canister vent solenoid
• F10
• Front passenger window switch
• Generator
• Htd/ seat fuse 20a
• Hvac control module
• Hvac fuse 10a
• I/p fuse block (behind right side of dash)
• Inflatable restraint front passenger presence system (pps) module
• Inside rearview mirror
• Instrument panel cluster (ipc)
• Int illum fuse 10a
• Manual a/c
• Onstar/ aldl fuse 10a
• Outside rear view mirror switch
• Park switch
• Passenger front heated seat relay
• Passenger seat adjuster switch
• Pcm/ etc fuse 16 15a
• Power lumbar control seat
• Powertrain control module (pcm)
• Prk/ lamp relay
• Prk/ switch fuse 5a
• Prk/lamp fuse 10a
• Pwr wndw circuit breaker 25a
• Pwr/ mir fuse 10a
• Pwr/ seat circuit breaker 25a
• R/ defog relay
• Radio
• Rap relay
• Rdo amp fuse 25a
• Red
• Remote control door lock receiver (rcdlr)
• Rfa/ mod fuse 10a
• S/roof fuse 20a
• S395
• Secondary air injection (air) pump relay (sulev)
• Starter
• Sunroof motor/ actuator
• To aux pwr fuse 10 (diagram 2 of 4)
• Turn/ hazrd fuse 20a
• Vehicle communication interface module (vcim)
• W/ digital audio system
• W/ driver
• W/ sunroof
• W/o digital audio system
• W/o driver
• W/o sunroof
• Washer/ rvc fuse 6 15a

Power Distribution Wiring Diagram (2 of 4) for Buick LaCrosse CXL 2005

List of elements for Power Distribution Wiring Diagram (2 of 4) for Buick LaCrosse CXL 2005:

• (3.6l) g115 (mounted to bank 1 cylinder head, above exhaust manifold)
• (3.6l) s116
• (3.8l) s101
• (center of dash cross beam, behind radio) g200
• 1-2 shift solenoid valve
• 12 volt reference
• 2-3 shift solenoid valve
• 3.6l
• 3.8l
• A/c clutch fuse 13 10a
• A/c comp relay
• A10
• A11
• A2 c1
• Abs fuse 23 10a
• Acc
• Acc lock
• Automatic a/c
• Automatic transmission
• Aux pwr fuse 10 25a
• Aux tcm fuse 8 10a
• Auxiliary power outlet (under floor console)
• Body control module
• Body control module (bcm)
• C1 a5
• C1 b3
• C1 b4
• C1 d1
• C100
• C2 a12
• C2 b9
• C275
• C277
• Cigar lighter
• Crank relay
• Crank voltage
• Cruise fuse 2a
• D11
• Display fuse 18 10a
• E12
• Electronic brake control module (w/ abs)
• Electronic compass module
• Engine control module (ecm)
• F12
• From ign 1 relay (diagram 2 of 4)
• From washer/rvc a fuse 6 (diagram 1 of 4)
• G113 (3.8l) (lower left front of engine, on transmission stud, near starter)
• G202 (left side of dash, at base of steering column)
• G302 (in right door sill, forward of right front seat)
• Hvac control module
• I/p fuse block
• I/p fuse block (behind right side of dash)
• Ign 1 relay
• Ignition 1 voltage
• Ignition 3 voltage
• Ignition switch
• Inflatable restraint front passenger presence system module
• Inflatable restraint passenger airbag on/off indicator
• Inflatable restraint sensing & diagnostic module
• Inflatable restraint steering wheel module coil
• Inside air temperature sensor
• Key in ignition switch
• Key in ignition switch signal
• Lock
• Manual a/c
• Nca
• Off
• P/train relay 40
• Pcm fuse 15 10a
• Pnk
• Powertrain control module (pcm)
• Rear object sensor control module
• Red
• Run
• S115
• S213
• S214
• S406
• Sir fuse 9 10a
• Start
• Steering angle sensor (w/ abs)
• To a/c clutch fuse (diagram 2 of 4)
• To etc fuse 17 (diagram 3 of 4)
• To fan 2 fuse (diagram 3 of 4)
• Torque converter clutch (tcc) solenoid valve
• Trans sol fuse 21 10a
• Transmission control module (tcm)
• Transmission control module (tcm) (3.6l)
• Underhood fuse block (mounted to right strut tower)
• Voice recorder/ cruise switch assembly
• W/ park assist
• Yaw & lateral acceleration sensor (w/ abs)

Power Distribution Wiring Diagram (3 of 4) for Buick LaCrosse CXL 2005

List of elements for Power Distribution Wiring Diagram (3 of 4) for Buick LaCrosse CXL 2005:

• (engine harness, 5cm pnk from secondary air injection (air) pump relay breakout, toward c100) s117
• 3.6l
• 3.8l
• A12
• A18
• A19
• C10
• C11
• Crank relay 48
• E14
• Emission fuse 12 10a
• Engine control module (ecm)
• Etc fuse 17 15a
• Evaporative emission (evap) canister purge solenoid
• Fan 1 fuse 29 30a
• Fan 1 relay 42
• Fan 2 fuse 32 30a
• Fan 2 relay 46
• Fan 3 relay 43
• Fog lp relay 36
• Fog lps fuse 7 10a
• From p/train b relay 40 (diagram 2 of 4)
• From p/train d relay 40 (diagram 2 of 4)
• Fuel pp fuse 22 15a
• Fuel pp relay 41
• G19
• G20
• Headlamp module
• Heated oxygen sensor (ho2s) 2
• Hi beam relay 34
• Horn fuse 11 15a
• Horn relay 39
• K15
• K18
• K19
• Mass air flow (maf) sensor/ intake air temperature (iat)
• Pnk
• Secondary air injection (air) pump relay
• Secondary air injection (air) solenoid relay
• Starter fuse 33 40a
• Sulev
• Throttle actuator control (tac) module
• To elek fuse 24 (diagram 4 of 4)
• Underhood fuse block (mounted to right strut tower)
• Wiper relay 45
• Wiper/ws fuse 5 25a

Power Distribution Wiring Diagram (4 of 4) for Buick LaCrosse CXL 2005

List of elements for Power Distribution Wiring Diagram (4 of 4) for Buick LaCrosse CXL 2005:

• (in engine wiring harn, 5 cm from ignition coil 1) s106
• (in engine wiring harn, near injector coils) s103
• (in engine wiring harness, on top of engine, 8 cm from fuel injector 3) s109
• (in fuel injector wiring harn) s104
• (in fuel injector wiring harn) s108
• 02 ssr fuse 14 15a
• 3.6l
• 3.8l
• A11
• Camshaft position (cmp) actuator solenoid exhaust bank 1
• Camshaft position (cmp) actuator solenoid exhaust bank 2
• Camshaft position (cmp) actuator solenoid intake bank 1
• Camshaft position (cmp) actuator solenoid intake bank 2
• D11
• Elek ign fuse 24 15a
• Evaporative emissions (evap) canister purge solenoid valve
• From emission e fuse 12 (diagram 3 of 4)
• Fuel inj fuse 20 15a
• Fuel injector 1
• Fuel injector 2
• Fuel injector 3
• Fuel injector 4
• Fuel injector 5
• Fuel injector 6
• Heated oxygen sensor (ho2s) sensor 1
• Heated oxygen sensor (ho2s) sensor 2
• Ignition coil 1
• Ignition coil 2
• Ignition coil 3
• Ignition coil 4
• Ignition coil 5
• Ignition coil 6
• Ignition control module (icm)
• Nca
• Pnk
• Underhood fuse block (mounted to right strut tower)