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ENGINE PERFORMANCE – Buick Century Limited 1998 – SYSTEM WIRING DIAGRAMS

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ENGINE PERFORMANCE

3.1L

3.1L (VIN M), Engine Performance Wiring Diagrams (1 of 4) for Buick Century Limited 1998

3.1L (VIN M), Engine Performance Wiring Diagrams (1 of 4) for Buick Century Limited 1998Download PDF file

List of elements for 3.1L (VIN M), Engine Performance Wiring Diagrams (1 of 4) for Buick Century Limited 1998:

  • (eng harn, on right side of eng compt, 15 cm from pcm breakout)
  • (eng harn, on right side of radiator, 7 cm from u/h elect center breakout)
  • (lower left front of eng)
  • (pin 10-12 not used)
  • (pin 14-15 not used)
  • (pin 21-27 not used)
  • (pin 39-42 not used)
  • (pin 49-52 not used)
  • (pin 62-63 not used)
  • (right side of eng)
  • 1-2 ss valve control
  • 2-3 ss valve control
  • 3x ref high
  • 3x ref low (ground)
  • Bypass control
  • Camshaft position sensor (front of eng, below intake plenum)
  • Ckp sensor signal
  • Cmp signal
  • Cooling fan system
  • Crankshaft position sensor (24x) (front of eng, behind harmonic balancer)
  • Crankshaft position sensor (7x) (right side of of eng, below manifold)
  • Cruise control system
  • Cruise disable output
  • Data link connector (under left side of dash, right of steering column)
  • Ecm sense fuse 10a
  • Egr val control (gnd)
  • Elek ign fuse 15a
  • Eng emis fuse 10a
  • Evap purge val drviver
  • F/injr fuse 15a
  • Fuel inj #1 driver
  • Fuel inj #2 driver
  • Fuel inj #3 driver
  • Fuel inj #5 driver
  • Fuel inj #6 driver
  • Fuse block (behind right side of dash, in right door opening)
  • G110
  • G120
  • High speed fans control
  • Hos1 low
  • Hos2 low
  • Hot at all times
  • Hot in off, run bulb test, or start
  • Hot in run, bulb test or start
  • Iac coil b high
  • Iat sensor ground
  • Ic control
  • Ign 0 fuse 10a
  • Ignition amplifier and switching module
  • Ignition control module (top right side of eng)
  • Ignition wake up power
  • Knock sensor (left side lower eng, above starter)
  • Knock sensor signal
  • Low speed fans control
  • Maf sensor signal
  • Map/ect sensor signal
  • Nca
  • Pcm ground
  • Pnk
  • Pnk b
  • Power (battery)
  • Powertrain control module (left front side of eng compt, in air cleaner assembly)
  • S106
  • S146
  • S155
  • Sensor ground
  • Serial data (class 2)
  • Spark plugs
  • Splice pack sp250
  • Tan
  • Tcc brake switch input
  • Tp sensor signal
  • Tr switch input b
  • Underhood electrical center (mounted to right strut tower)
  • Vss high
  • Vss low
  • Vss output

3.1L (VIN M), Engine Performance Wiring Diagrams (2 of 4) for Buick Century Limited 1998

3.1L (VIN M), Engine Performance Wiring Diagrams (2 of 4) for Buick Century Limited 1998Get access to all wiring diagrams of the carDownload PDF file

List of elements for 3.1L (VIN M), Engine Performance Wiring Diagrams (2 of 4) for Buick Century Limited 1998:

  • (lower left front of eng)
  • Evaporative emissions canister purge solenoid valve (top right side of eng, behind ignition control module)
  • Evaporative emissions canister vent solenoid valve (behind left side of rear fascia splash shield, in wheelwell)
  • Fuel injectors
  • G117
  • Pnk
  • S105
  • S109
  • Stop lamp switch (on brake pedal support c2 bracket)
  • Tan
  • Transaxle range switch (left side of eng compt, on transaxle)
  • Underhood electrical center (mounted to right strut tower)
  • Vehicle speed sensor (lower right side of eng compt, on transaxle)

3.1L (VIN M), Engine Performance Wiring Diagrams (3 of 4) for Buick Century Limited 1998

3.1L (VIN M), Engine Performance Wiring Diagrams (3 of 4) for Buick Century Limited 1998Get access to all wiring diagrams of the carDownload PDF file

List of elements for 3.1L (VIN M), Engine Performance Wiring Diagrams (3 of 4) for Buick Century Limited 1998:

  • (body harn, under rear seat)
  • (eng harn, above ignition control module, 2 cm from ignition control module c2 breakout)
  • (eng harn, below intake plenum, 2 cm from pcm breakout)
  • (eng harn, on right side of eng compt, 15 cm from pcm breakout)
  • (left side of eng, in air cleaner duct) mass air flow sensor
  • (lower left side of eng, above starter) engine oil pressure indicator switch
  • (lower left side of eng, in oil pan) engine oil level indicator switch
  • (on throttle body assembly) idle air control (iac) valve
  • A/c refrigerant pressure sensor (on left side of eng compt, on accumulator)
  • B12
  • Engine coolant temperature (ect) sensor (top left side of eng, below throttle body)
  • Exhaust gas recirculation valve (top rear of eng, near throttle body)
  • F b
  • Fuel tank pressure sensor (in fuel tank)
  • G110 (lower left front of eng)
  • Generator
  • Instrument cluster
  • Intake air temperature (iat) sensor (left rear of eng compt, in air cleaner duct)
  • L c
  • Malfunction indicator lamp
  • Manifold absolute pressure sensor (top right side of eng, above valve cover)
  • Pnk
  • Red
  • S106
  • S107
  • S121
  • S122
  • S167
  • S409
  • Tan
  • Throttle position sensor (on throttle body assembly)
  • Underhood electrical center (mounted to right strut tower)

3.1L (VIN M), Engine Performance Wiring Diagrams (4 of 4) for Buick Century Limited 1998

3.1L (VIN M), Engine Performance Wiring Diagrams (4 of 4) for Buick Century Limited 1998Get access to all wiring diagrams of the carDownload PDF file

List of elements for 3.1L (VIN M), Engine Performance Wiring Diagrams (4 of 4) for Buick Century Limited 1998:

  • (lower left front of eng)
  • (pin 12-15 not used)
  • (pin 30-32 not used)
  • (pin 45-48 not used)
  • (pin 51-54 not used)
  • (pin 62-65 not used)
  • (pin 74-77 not used)
  • (pin 8-9 not used)
  • (right rear sheld)
  • 1-2 shift solenoid
  • 2-3 shift solenoid
  • 5v ref a
  • A/c compress clutch rly
  • A/c refrig press signal
  • A/c request signal
  • A11
  • Air conditioning system
  • Auto transaxle fluid temperature sensor
  • Cluster fuse 10a
  • Cmp/ckp sensor batt (+)
  • Cmp/ckp sensor ground
  • Crank
  • Crank signal fuse 10a
  • Cruise control system
  • Cruise engaged input
  • D10
  • Ect sensor signal
  • Egr pintle position signal
  • Egr val ign positive volt
  • Eng oil level ind in
  • Eng oil press sensor sig
  • Evap can vent sol driver
  • F/pmp fuse 15a
  • F/pump relay
  • Fuel inj #4 driver
  • Fuel level sensor
  • Fuel level sensor input
  • Fuel pump
  • Fuel pump relay control
  • Fuel tank
  • Fuel tank press signal
  • Fuse block (behind right side of dash, in right door opening)
  • G110
  • G110 (lower left front of eng)
  • G313
  • Gen terminal f output
  • Gen terminal l output
  • Heated oxygen sensor (ho2s) no1 (in right bank exhaust manifold)
  • Heated oxygen sensor (ho2s) no2 (in exhaust system, rear of catalytic converter)
  • Ho2s 1 signal
  • Ho2s 2 signal
  • Hot at all times
  • Hot in run, bulb test or start
  • Hot in run, bulb test, or start
  • Hot in start
  • Iac coil a high
  • Iac coil a low
  • Iac coil b low
  • Iat sensor signal
  • Ignition positive volt (2)
  • Map sensor signal
  • Mil control
  • Nca
  • Oxy sen fuse 15a
  • Pcm- bcm fuse 10a
  • Pnk
  • Powertrain control module (left front side of eng compt, in air cleaner assembly)
  • Red
  • S105
  • S106
  • S234
  • Sensor ground
  • Tan
  • Tcc pwm sol val control
  • Tcc pwm solenoid
  • Tcc sol valve control
  • Tcc solenoid
  • Tft sensor signal
  • Tp sens or signal
  • Tr switch input a
  • Tr switch input c
  • Tr switch input d
  • Trans fuse 10a
  • Transaxle
  • Underhood electrical center
  • Underhood electrical center (mounted to right strut tower)