ENGINE PERFORMANCE – Buick LaCrosse CX 2006 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

3.6L VIN 7

3.6L VIN 7, Engine Performance Wiring Diagram (1 of 4) for Buick LaCrosse CX 2006

List of elements for 3.6L VIN 7, Engine Performance Wiring Diagram (1 of 4) for Buick LaCrosse CX 2006:

• (1,3: left top of engine) (2,5,6: right top of engine) (4: right rear of engine)
• (bottom of oil pan) engine oil level/temperature sensor
• (eng harn, approximately 39.5 cm from ecm) s120
• (left front of engine block) engine oil pressure sensor
• +5v
• +5v ref
• +5v ref 2
• Bare
• Ckp sens sig
• Cmp sig
• Cmp sol ctrl
• Crankshaft position sensor (right rear of engine block)
• Drain
• Ect sig
• Engine control module (top of engine)
• Evap sol ctrl
• Fuel injectors
• G103 (even bank cylinder head)
• Gen fdc sig
• Gen to sig
• Heated oxygen sensor 1 (at rear of cylinder head in exhaust manifold)
• Heated oxygen sensor 2 (in exhaust, rear of catalytic converter)
• Ho2s hi sig
• Ho2s lo ctrl
• Ho2s pmp ct
• Ic 1 sig
• Ic 2 ctrl
• Ic 3 ctrl
• Ic 4 sig
• Ic 5 ctrl
• Ic 6 ctrl
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• Knock sensor bank 1 (right side of engine)
• Knock sensor bank 2 (left side of engine block, below exhaust manifold)
• Ks 1 sig
• Ks 2 sig
• Low ref
• Map sig
• Nca
• Oil lev sig
• Oil pres sig
• Oil tmp sig
• Pnk
• Pnk e
• S104
• S108
• Starting/ charging system
• Tac mtr ctrl
• Tan
• Tp sig
• Tp2 sig

3.6L VIN 7, Engine Performance Wiring Diagram (2 of 4) for Buick LaCrosse CX 2006

List of elements for 3.6L VIN 7, Engine Performance Wiring Diagram (2 of 4) for Buick LaCrosse CX 2006:

• (near ignition coils 2,4 & 6)
• (on left valve cover)
• (on right valve cover)
• A11
• C11
• Cnstr fuse 10a
• D11
• Elek ign fuse 15a
• Emis- sion fuse 10a
• Etc fuse 17 15a
• F12
• Fuel inj fuse 15a
• Fuel pp fuse 22 15a
• Fuel pump relay
• G115 (mounted to bank 1 cylinder head above exhaust manifold)
• G130 (near ignition coils 1,3 & 5)
• G131
• Hot at all times
• Hot in run or start
• I/p fuse block (behind left side of dash)
• Ign 1 relay
• Ignition coil 1
• Ignition coil 2
• Ignition coil 3
• Ignition coil 4
• Ignition coil 5
• Ignition coil 6
• Nca
• O2 ssr fuse 15a
• P/train relay
• Pcm fuse 15 10a
• Pcm/etc fuse 16 15a
• Pnk
• S103
• S106
• S110
• S116
• S130
• S131
• S132
• S133
• Spark plug
• Tan
• Under- hood fuse block (mounted to right strut tower)

3.6L VIN 7, Engine Performance Wiring Diagram (3 of 4) for Buick LaCrosse CX 2006

List of elements for 3.6L VIN 7, Engine Performance Wiring Diagram (3 of 4) for Buick LaCrosse CX 2006:

• (approximately 34.5 cm from ecm)
• (approximately 9 cm from cmp sensor 1 intake) s121
• (on front of left cylinder head)
• (on front of right cylinder head)
• +5v
• A/c refrigerant pressure sensor (on left side of engine compt, on accumulator)
• Bank 2)
• Camshaft position actuator solenoid (exhaust bank 1)
• Camshaft position actuator solenoid (exhaust bank 2)
• Camshaft position actuator solenoid (intake bank 1)
• Camshaft position actuator solenoid (intake bank 2)
• Camshaft position sensor (exhaust bank 1)
• Camshaft position sensor (exhaust bank 2)
• Camshaft position sensor (intake
• Camshaft position sensor (intake bank 1)
• Engine coolant temperature sensor (left side of engine block, above exhaust manifold)
• Evaporative emission (evap) canister purge solenoid valve (top center of engine)
• Low ref
• Manifold absolute pressure sensor
• Mass air flow/ intake air temperature sensor (in air intake tube)
• Pnk
• S119
• Signal
• Tan
• Throttle actuator control module (at throttle body)

3.6L VIN 7, Engine Performance Wiring Diagram (4 of 4) for Buick LaCrosse CX 2006

List of elements for 3.6L VIN 7, Engine Performance Wiring Diagram (4 of 4) for Buick LaCrosse CX 2006:

• (approximately 32 cm from underhood fuse block towards transmission control module)
• (in fuel tank) fuel pump & sender assembly
• (in fuel tank) fuel tank pressure sensor
• (mounted to bank 1 cylinder head above exhaust manifold) g115
• (mounted to c1 right strut tower)
• (mounted to right strut c1 tower)
• +5v ref
• +5v ref 1
• +5v ref 2
• A/c ref pres
• A12
• Acc
• Accelerator pedal
• Air conditioning system
• Anti-lock brake system
• App sens 2 sig
• App sens sig
• Automatic transmission
• B12
• Battery +
• Body control module (behind left side of dash, left of steering column)
• C12
• Cc sw sig
• Class 2 data
• Clu rly ctrl
• Computer data lines system
• Cooling fans system
• Cruise control system
• D10
• D12
• Delv torque sig
• E11
• Eng spd sig
• Engine control module (top of engine)
• Evap sol ctrl
• Evaporative emissions (evap) canister vent solenoid valve (behind left side of rear fascia splash shield, behind wheelwell)
• Fan rly ctrl
• Fuel lev sig
• Fuel level sensor
• G302 (in right door sill, forward of right front seat)
• Gmlan bus+
• Gmlan bus-
• Ho2s hi sig
• Ho2s lo ctrl
• Ho2s lo sig
• Hot at all times
• I/p fuse block (behind left c1 side of dash)
• I/p fuse block (behind left side of dash)
• Iat sig
• Ign 1 volt
• Ign 3 volt
• Ignition switch
• Instrument panel cluster
• Lan bus +
• Lan bus -
• Lock
• Logic
• Low ref
• Maf sig
• Main rly ctrl
• Malfunction indicator lamp
• Mil ctrl
• Mode switch
• Navigation system
• P/n sig
• Pnk
• Position sensor (under left side of dash)
• Req torq sig
• Rly coil ctrl
• Rly ctrl
• Run
• S116
• S118
• Start
• Starting/ charging system
• Stop lamp sw sig
• Stop lp sw
• Tan
• Tank pres sig
• Transmission control module
• Transmission internal
• Underhood fuse block
• Underhood fuse block (mounted to right strut tower)
• Underhood fuse block c1 (mounted to right strut tower)
• Vss

3.8L VIN 2

3.8L VIN 2, Engine Performance Wiring Diagram (1 of 5) for Buick LaCrosse CX 2006

List of elements for 3.8L VIN 2, Engine Performance Wiring Diagram (1 of 5) for Buick LaCrosse CX 2006:

• (in engine oil pan) engine oil level switch
• (lower left front of engine, on transmission stud, near starter) g113
• (on top of engine, approximately 8 cm from breakout to fuel injector 3, towards fuel injector 5)
• (pins 62-72 not used)
• (top right rear of engine, near throttle body) exhaust gas recirculation valve
• 5 volt ref 1
• 5 volt ref 2
• Air sol ctrl
• Cmp sensor
• Ect sensor sig
• Egr pos sig
• Egr sol high
• Egr sol low
• Engine coolant temperature sensor (on top right of intake manifold)
• Engine oil pressure switch (below power steering pump)
• Evap purge sol
• Evaporative emission (evap) canister purge solenoid valve (top rear of engine)
• Fuel inj 1
• Fuel inj 2
• Fuel inj 3
• Fuel inj 4
• Fuel inj 5
• Fuel inj 6
• Fuel injectors (1,3,5: left top of engine) (2,6: right top of engine) (4: right rear of engine)
• G113 (on transmission stud, near starter)
• Gen field
• Gen on sig
• Generator
• Ground
• Heated oxygen sensor (ho2s) 1 (right side of engine)
• Ho2s heater 1
• Ho2s sig high
• Ho2s sig low
• Ic timing ctrl
• Ic timing sig
• Knock sensor bank 1
• Knock sensor bank 2 (right side of engine, below exhaust manifold)
• Knock sensor 1
• Knock sensor 2
• Low eng speed
• Low ref
• Manifold absolute pressure sensor
• Map sensor sig
• Med eng speed
• Nca
• Oil level sw
• Oil press sig
• Pnk
• Powertrain control module
• Red
• S101
• S109
• Tan
• Uart data

3.8L VIN 2, Engine Performance Wiring Diagram (2 of 5) for Buick LaCrosse CX 2006

List of elements for 3.8L VIN 2, Engine Performance Wiring Diagram (2 of 5) for Buick LaCrosse CX 2006:

• (front of engine) camshaft position sensor
• (in right side of engine, on ignition control module bracket)
• (lower left front of engine) crankshaft position sensor
• (on top of engine near ignition control module, approximately 12 cm from inline connector c110 breakout, towards icm)
• (on top of engine near ignition control module, approximately 5.5 cm from inline connector c110 breakout, towards icm)
• 5 volt ref
• A11
• Aap sensor 1
• Accelerator pedal position switch (under left side of dash)
• App sensor 2
• Body control module (behind left side of dash, left of steering column)
• C11
• Elek ign fuse 24 15a
• Etc fuse 17 15a
• From p/train relay (diagram 4 of 5)
• Fuel inj fuse 20 15a
• G112
• G113 (lower left front of engine, on transmission stud, near starter)
• Ground
• Hot in run or start
• Ign 1 volt
• Ignition control module (icm) (top left front of engine)
• Low ref
• Pnk
• Primary uart
• S101
• S102
• S144
• S145
• Sec uart
• Secondary air injection control solenoid valve/pressure sensor bank 2 (sulev) (on right side of engine, above valve cover)
• Secondary air injection solenoid relay (sulev)
• Spark plugs
• Stop lamp
• Stop lamp switch signal
• Tan
• Throttle actuator control module
• Trans sol fuse 21 10a
• Underhood fuse block (mounted to right strut tower)
• Vehicle spd

3.8L VIN 2, Engine Performance Wiring Diagram (3 of 5) for Buick LaCrosse CX 2006

List of elements for 3.8L VIN 2, Engine Performance Wiring Diagram (3 of 5) for Buick LaCrosse CX 2006:

• 1-2 shift solenoid
• 2-3 shift solenoid
• A red
• A/t fluid temp sensor
• Air pres sens
• At iss sig
• Automatic transaxle
• B tan
• Boost sol
• G113 (lower left front of engine, on transmission stud, near starter)
• Ho2s heater 2
• Ho2s sig high
• Ho2s sig low
• Iat sensor sig
• Input shaft speed sensor
• Low ref
• Maf sensor sig
• Pc sol
• Pnk
• Powertrain control module
• Pressure control solenoid
• Red
• Shift sol
• Tan
• Tcc release switch
• Tcc sol
• Tcc sw sig
• Tft sensor sig
• Torque converter clutch solenoid
• Tr sw a
• Tr sw b
• Tr sw c
• Tr sw p
• Trans- mission internal mode switch
• Vehicle speed sensor (on transmission output shaft)
• Vss sig

3.8L VIN 2, Engine Performance Wiring Diagram (4 of 5) for Buick LaCrosse CX 2006

List of elements for 3.8L VIN 2, Engine Performance Wiring Diagram (4 of 5) for Buick LaCrosse CX 2006:

• (at rear of engine, in air cleaner duct) intake air temperature/ mass air flow sensor
• (w/o stabilitrak)
• Air pump fuse 25 50a
• Cnstr fuse 10a
• D11
• Electronic brake control module (left side of engine compt, part of brake pressure modulator valve)
• Emission fuse 12 10a
• Evaporative emissions (evap) canister vent solenoid valve (behind left side of rear fascia splash shield, behind wheelwell)
• F12
• Fuel pp fuse 22 15a
• Fuel pp relay
• G113 (lower left front of engine, on transmission stud, near starter)
• G115 (on transmission stud, right of starter)
• Heated oxygen sensor (ho2s) 2
• Hot at all times
• I/p fuse block (behind left side of dash)
• Iat
• Maf
• Nca
• O2 ssr fuse 14 15a
• P/train relay
• Pnk
• Red
• S101
• S114
• S117
• Secondary air injection pump (sulev) (left rear of engine)
• Secondary air injection pump relay (sulev)
• Tan
• To p/train fuses (diagram 2 of 5)
• Underhood fuse block (mounted to right strut tower)

3.8L VIN 2, Engine Performance Wiring Diagram (5 of 5) for Buick LaCrosse CX 2006

List of elements for 3.8L VIN 2, Engine Performance Wiring Diagram (5 of 5) for Buick LaCrosse CX 2006:

• (in right door sill, forward of right front seat) g302
• (left side of dash, at base of steering column)
• (on left side of engine compt, on accumulator) a/c refrigerant pressure sensor
• (right side of dash)
• 5 volt ref 1
• A/c clutch relay
• A/c press sig
• A12
• A7 c2
• Acc
• Air conditioning system
• B12
• Battery
• C1 d8
• C12
• Class 2 data
• Clstr fuse 10a
• Cooling fans system
• Cruise control system
• Cruise sig
• D1 c1
• D10
• D12 c2
• Data link connector (under left side of dash)
• E11
• Eng speed sig
• Evap vent sol
• F c405
• F11
• Fuel level sig
• Fuel pump & sender assembly
• Fuel pump relay
• Fuel tank
• Fuel tank press
• Fuel tank pressure sensor
• G202
• High fan
• Hot at all times
• Hot in run or start
• I/p fuse block (behind left side of dash)
• Ignition 1
• Ignition 3
• Ignition switch
• Instrument panel cluster
• Lock
• Low fan
• Low ref
• Malfunction indicator lamp (mil)
• Mil control
• Pcm fuse 15 10a
• Pcm relay
• Pcm/etc fuse 16 15a
• Pnk
• Powertrain control module
• Relay ctrl
• Run
• S211
• Splice pack sp205
• Start
• Starter enable
• Starting/charging system
• Stop lamp sw
• Underhood fuse block (mounted to right strut tower)
• Vehicle speed sig