ENGINE PERFORMANCE – Buick Century Limited 1996 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

2.2L

2.2L (VIN 4), Engine Performance Wiring Diagrams (1 of 3) for Buick Century Limited 1996

List of elements for 2.2L (VIN 4), Engine Performance Wiring Diagrams (1 of 3) for Buick Century Limited 1996:

• 5v ref voltage
• A/c refrig press sens
• A/c request in
• Air conditioning system
• Cam pos sensor in
• Cam/crank sens grd
• Cam/crank sens pwr
• Camshaft position sensor (right side of engine)
• Class 2 data line
• Crank pos sensor in
• Cruise control system
• Cruise on signal in
• Data link connector (below left side of i/p)
• Ecm fuse 15a
• Ecm ground
• Ect sensor in
• Fuel inj 1 ctrl
• Fuel inj 2 ctrl
• Fuel inj 3 ctrl
• Fuel inj 4 ctrl
• Fuel injectors
• Fuel pump in-line fuse 15a (right front of engine compt, on relay bracket)
• Fuel pump relay ctrl
• Fuel pump/ oil pressure switch (center rear of engine)
• Fuse block
• G130 (top of transaxle)
• G130 (top of transaxle, on stud under intake manifold)
• G130 (transaxle stud, under intake manifold)
• H02s 2 signal in
• High resolution 24x crankshaft position sensor (center rear of engine, below icm module)
• Ho2s 2 signal return
• Hot at all times
• Hot in run, bulb test or start
• Iac motor control
• Iat sensor in
• Idle air control (iac) valve (on side of throttle assembly)
• Linear egr pos sens in
• Linear egr sol out
• Map sensor in
• Nca
• O2s 1 signal in
• O2s 1 signal return
• Park/neutral position switch (left rear of engine, on transaxle)
• Park/neutral sw in
• Pcm ground
• Pnk
• Power (battery)
• Power (ignition 1)
• Power (ignition)
• Powertrain control module (behind right side of i/p)
• Sensor return
• Tan
• Tp sensor in
• Uart data line

2.2L (VIN 4), Engine Performance Wiring Diagrams (2 of 3) for Buick Century Limited 1996

List of elements for 2.2L (VIN 4), Engine Performance Wiring Diagrams (2 of 3) for Buick Century Limited 1996:

• 87a
• A/c refrigerant pressure sensor (lower right side of engine compt)
• Engine coolant temperature sensor (top left side of engine)
• Engine/ac in-line fuse 10a (behind left side of i/p, taped to harness)
• Evap emissions canister purge vacuum diagnostic switch (top center rear of engine)
• Evaporative emissions canister purge solenoid valve (rear of engine)
• Fuel pump prime connector (right front of engine compt, near relay bracket)
• Fuel pump relay (right front of engine compt)
• Fuel tank unit
• G108 (left radiator support)
• G130 (top of transaxle)
• G402 (left rear wheelhouse)
• Heated oxygen sensor 2 (catalyst) monitor) (exhaust pipe behind catalytic converter)
• Hot in run, bulb test or start
• Intake air temperature sensor (top left side of engine, on intake air ductwork)
• Linear exhaust gas recirc- ulation valve (top left side of engine)
• Manifold absolute pressure sensor (top center of engine)
• Nca
• Oxygen sensor 1 (front of engine, in exhaust manifold)
• Pnk
• Red
• Tan
• Throttle position sensor (side of throttle body)

2.2L (VIN 4), Engine Performance Wiring Diagrams (3 of 3) for Buick Century Limited 1996

List of elements for 2.2L (VIN 4), Engine Performance Wiring Diagrams (3 of 3) for Buick Century Limited 1996:

• (left rear of engine, above transaxle) ignition control module
• A/c comp relay ctrl
• Air conditioning system
• Automatic transaxle
• Brake pedal sw in
• Buick
• Canister purge sol ctrl
• Cool fan relay 1 ctrl
• Cool fan relay 2 ctrl
• Coolant temp indic ctrl
• Cooling fans system
• Cruise control system
• Ecm ground
• Engine coolant temp indic
• Evap vac diag sw in
• Fan/alt fuse 10a
• Fuse block
• G130 (top of transaxle)
• Gages fuse 10a
• Hot in acc or run
• Hot in run, bulb test or start
• Ignition amplifier and switching module
• Ignition coil ctrl out
• Inj/coil fuse 20a
• Instrument cluster
• Instrument cluster system
• Knock sensor (center rear of engine, below icm module)
• Knock sensor in
• Mil indic ctrl
• Olds
• Plugs spark
• Pnk
• Power (ignition 1)
• Powertrain control module (behind right side of i/p)
• Service engine soon indic
• Stop lamp tcc/cruise brake switch (behind left side of i/p)
• Tcc sol ctrl
• Third gear switch (closed in third gear)
• Vehicle speed sensor (on transaxle)
• Vss out
• Vss sensor in
• Vss sensor return
• Warning systems

3.1L

3.1L (VIN M), Engine Performance Wiring Diagrams (1 of 3) for Buick Century Limited 1996

List of elements for 3.1L (VIN M), Engine Performance Wiring Diagrams (1 of 3) for Buick Century Limited 1996:

• 24x crank pos in
• 5v ref out
• A/c comp ctrl
• A/c request in
• Air cond- itioning system
• Air conditioning system
• Brake/tcc sw in
• Cam pos in
• Cam/crnk pos return
• Camshaft position sensor (right side of engine, below intake manifold)
• Cooling fans system
• Cruise control system
• Cruise engaged sig
• Data link connector (under left side of i/p)
• Dlc class 2 data
• Ecm fuse 15a
• Egr valve sol ctrl
• Engine cool fan #1
• Engine cool fan #2
• Engine data sens grd
• Engine/ac in-line fuse 10a (behind left side of i/p)
• Evap emissions canister purge vacuum diagnostic switch (top center of engine)
• Evap purge diag sw
• Evap purge sol ctrl
• Evaporative emissions canister purge solenoid valve (top center rear of engine)
• Fuel pump in-line fuse 15a (right front of engine compartment)
• Fuel pump rly ctrl
• Fuel pump/ oil pressure switch (front of engine, above starter)
• Fuse block
• G129 (transaxle stud)
• High resolution 24x crankshaft position sensor (right side of engine, behind harmonic balancer)
• Hot at all times
• Hot in run, bulb test or start
• Iac control
• Icm module bypass
• Idle air control (iac) valve (on side of throttle assembly)
• Ignition ctrl in
• Ignition ctrl ref hi
• Ignition ctrl ref lo
• Ignition feed
• Instrument cluster system
• Intake air temperature (iat) sensor (left front of engine compt)
• Maf sensor in
• Mass air flow sensor (left front of engine compt)
• Mil lamp control
• Pcm ground
• Pnk
• Power (battery)
• Power (ignition)
• Powertrain control module (behind right side of i/p)
• Red
• Tan
• Tcc enable sol ctrl
• Tcc solenoid ctrl
• Trans range sw 'a'
• Trans range sw parity
• Uart data link
• Vehicle speed sensor (on transaxle)
• Vss in
• Vss out-4000 ppm
• Vss return
• Warning systems

3.1L (VIN M), Engine Performance Wiring Diagrams (2 of 3) for Buick Century Limited 1996

List of elements for 3.1L (VIN M), Engine Performance Wiring Diagrams (2 of 3) for Buick Century Limited 1996:

• (top center rear of engine block) ignition coil assembly
• (top of transaxle) transaxle range switch
• (transaxle stud)
• * buick ** olds
• 87a
• Charge
• Check engine
• Coolant temp
• Engine coolant temperature sensor (top left side of engine)
• Fan/alt fuse 10a
• Fuel pump (top of fuel tank)
• Fuel pump prime connector (right front of engine compartment)
• Fuel pump relay (relay bracket, right front of engine compartment)
• Fuse block
• G129
• G129 (transaxle stud)
• G130 (transaxle stud, under intake manifold)
• G402 (left rear wheelhousing)
• Gauges fuse 10a
• Hot in acc or run
• Hot in run, bulb test or start
• Ignition amplifier and switching module
• Inj/coil fuse 20a
• Instrument cluster
• Linear exhaust gas recirc- ulation valve (top left side of engine)
• Low resolution 7x crankshaft sensor (lower rear of engine)
• Nca
• Plugs spark
• Pnk
• Red
• Spark plugs
• Stoplamp/ tcc/cruise brake switch (under left side of i/p)
• Tan
• Throttle position sensor (throttle body)
• Warning systems

3.1L (VIN M), Engine Performance Wiring Diagrams (3 of 3) for Buick Century Limited 1996

List of elements for 3.1L (VIN M), Engine Performance Wiring Diagrams (3 of 3) for Buick Century Limited 1996:

• A/c press sens in
• A/c refrigerant pressure sensor (right side of engine compt, below accumulator)
• Alternator ind ctrl
• Coolant temp indic ctrl
• Cruise control system
• Cruise inhibit out
• Ect sensor in
• Fuel inj 1 ctrl
• Fuel inj 2 ctrl
• Fuel inj 3 ctrl
• Fuel inj 4 ctrl
• Fuel inj 5 ctrl
• Fuel inj 6 ctrl
• Fuel injectors
• G108 (left radiator upper support)
• G129 (transaxle stud)
• G130 (transaxle stud under intake manifold)
• Gen out signal in
• Heated oxygen sensor #1 (rear of engine, in exhaust manifold)
• Heated oxygen sensor #2 (in exhaust pipe, behind catalyst)
• Ho2s 1 hi in
• Ho2s 1 low in
• Ho2s 2 hi in
• Ho2s 2 low in
• Iat sensor in
• Knock sens in
• Knock sensor (front of engine, above starter)
• Linear egr pos sens in
• Manifold absolute pressure sensor (top rear of engine)
• Map sensor in
• Pcm ground
• Pnk
• Powertrain control module (behind right side of i/p)
• Red
• Shift solenoid a
• Shift solenoid b
• Starting/ charging system
• Tan
• Tcc (pwm) solenoid
• Tcc enable solenoid
• Tp sensor in
• Trans range sw 'b' in
• Trans range sw 'c' in
• Trans shift sol 'a'
• Trans shift sol 'b'
• Trans temp sens in
• Transaxle
• Transmission fluid temperature sensor