ENGINE PERFORMANCE – Buick LeSabre Custom 2003 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

3.8L VIN K

3.8L VIN K, Engine Performance Wiring Diagram (1 of 4) for Buick LeSabre Custom 2003

List of elements for 3.8L VIN K, Engine Performance Wiring Diagram (1 of 4) for Buick LeSabre Custom 2003:

• (le sabre) (bonneville)
• (not used)
• (on lower front of eng block, near starter) knock sensor (ks) bank 1
• 18x ref
• 18x reference
• 3x ref
• 3x reference
• A/t iss low
• A/t speed sensor high
• Acc
• All times
• Anti-lock brake system
• B c
• Battery
• Bonneville le sabre
• Bypass
• Ckp 18x sig
• Ckp sync sig
• Cmp input
• Cmp output
• Cmp signal
• Computer data lines system
• Cooling fans system
• Cruise control system
• Cruise disable/inhibit
• Desired torque input
• Dis fuse 10a 20a
• E e
• Ect sensor ground
• Egr control ground
• Egr pos sens ground
• Evap purge valve
• Evaporative emissions canister purge solenoid (top of engine)
• Fuel inj 1 control
• Fuel inj 2 control
• Fuel inj 4 control
• Fuel inj 5 control
• Fuel inj 6 control
• G102 (below ignition control module)
• G105 (below ignition control module)
• Ground
• Hi speed cool fan
• Ho2s 1 low
• Ho2s 2 low
• Hot at
• Hot at all times
• Hot in run & start
• Iac coil b high
• Iat sensor ground
• Ign control
• Ign voltage
• Ignition
• Ignition control
• Ignition control module (icm) (on top left front of eng)
• Ignition switch (pigtailed for le sabre)
• Instrument cluster system (vehicle speed)
• Knock sensor (ks) bank 2 (on lower rear of eng block, near oil filter)
• Ks1 input
• Ks2 input
• Lo speed cool fan
• Lock
• Maf sensor input
• Map sensor +5 v
• Map sensor ground
• Mass airflow (maf) sensor (top of throttle body)
• Not used
• Off
• Pcm batt fuse 10a
• Pcm ground
• Pnk
• Pnk a
• Powertrain control module (pcm) (in air cleaner housing)
• Ref low
• Reference low
• Run
• S212 (or s208)
• Sensor return
• Sensor return (eop)
• Serial data (class 2)
• Shift sol a control
• Shift sol b control
• Start
• Tan
• Tcc switch input
• Tp sensor ground
• Trans fuse 10a
• Trans range sw b
• Under- hood fuse block
• Vehicle speed sensor (right front of transaxle)
• Vss high
• Vss low
• Vss output

3.8L VIN K, Engine Performance Wiring Diagram (2 of 4) for Buick LeSabre Custom 2003

List of elements for 3.8L VIN K, Engine Performance Wiring Diagram (2 of 4) for Buick LeSabre Custom 2003:

• (below ignition control module) g105
• (ign module harn, near icm)
• (or
• 1-2 shift sol
• 2-3 shift sol
• A6 (or pnk)
• Automatic transaxle
• Automatic transaxle fluid pressure manual valve position switch
• Automatic transaxle fluid temperature sensor
• Automatic transaxle input shaft speed sensor
• Automatic transaxle internal mode switch
• B9 (or pnk)
• Camshaft position (cmp) sensor (front of eng, below water pump)
• Crankshaft position (ckp) sensor (front of eng, behind crank pulley)
• Cruise control system
• D4 (or pnk)
• Fuel injec- tors
• Hot in run & start
• Ign 1 fuse 10a
• Injr 1 fuse 10a
• Injr 2 fuse 10a
• Pnk
• Pressure control sol
• Rear fuse block
• Red
• S135
• S136
• S216
• Tan
• Tcc pwm sol
• Tcc release switch
• Tcc/ cruise release switch (near brake pedal)
• Under- hood fuse block

3.8L VIN K, Engine Performance Wiring Diagram (3 of 4) for Buick LeSabre Custom 2003

List of elements for 3.8L VIN K, Engine Performance Wiring Diagram (3 of 4) for Buick LeSabre Custom 2003:

• (bonneville)
• (bonneville) (le sabre)
• (eng harn, 6.5 cm from iac)
• (le sabre)
• A/c refrigerant pressure sensor (behind a/c comp, on a/c line)
• Bonneville
• D a
• D3 pnk
• Engine oil level switch (in left side of eng oil pan)
• Engine oil pressure sensor (front of engine)
• Exhaust gas recirculation (egr) valve (top rear of engine)
• F/pmp fuse 20a
• Fuel pump
• Fuel pump relay
• Fuel tank pressure sensor (top of fuel tank)
• Fuel tank unit
• G105 (below ignition control module)
• G200 (left front door pillar)
• G302 (under rear seat)
• G401 (right rear of trunk)
• Hot at all times
• Hot in run & start
• Ign-1 fuse 10a
• Ign1 fuse 10a
• Instrument cluster
• Intake air temperature (iat) sensor (left side of engine compt, in the air intake duct)
• Le sabre
• Malfunction indicator lamp (led for bonneville)
• Manifold absolute pressure (map) sensor (top of engine)
• Pnk
• Rear fuse block
• S105 (engine harn, 9.5 cm from pcm connector)
• S106
• S216
• S401
• Stoplight/ auto trans shift lock control switch
• Tach input
• Tan
• Throttle position (tp) sensor (on throttle body assembly)

3.8L VIN K, Engine Performance Wiring Diagram (4 of 4) for Buick LeSabre Custom 2003

List of elements for 3.8L VIN K, Engine Performance Wiring Diagram (4 of 4) for Buick LeSabre Custom 2003:

• (le sabre b c (bonneville)
• 5 volt reference a
• 5 volt reference b
• A/c comp relay control
• A/c ref pressure
• A/c system
• A/t fluid temp input
• Anti-lock brake system
• Boost control solenoid (vin 1)
• Boost solenoid control
• Brake pedal sw out
• C b
• Cruise control system
• Cruise status
• Delivered torque control
• Ect sensor input
• Egr pintle position input
• Egr valve control
• Eng oil level sw input
• Engine coolant temperature (ect) sensor (on rear of eng, near thermostat housing)
• Evap solenoid control
• Evaporative emissions (evap) canister vent valve
• Fuel inj 3 control
• Fuel level input
• Fuel pump relay control
• Fuel tank press sensor
• Fuel tank sender
• G100 (top of transmission)
• Gen term f monitor
• Gen term l control
• Heated oxygen bank 1 sensor 1 (in right exhaust manifold)
• Heated oxygen bank 1 sensor 2 (rear of catalytic converter)
• Ho2s 1 input
• Ho2s 2 input
• Hot in run & start
• Hot in run and start
• Iac coil a high
• Iac coil a low
• Iac coil b low
• Iat sensor input
• Idle air control (iac) valve (on throttle body assembly)
• Ign 1 fuse 10a
• Ignition
• Ignition 1
• Map sensor input
• Mil control
• Nca
• Oil pressure signal
• Oxy sen fuse 10a
• Pcm ign fuse 10a
• Pnk
• Powertrain control module (pcm) (in air cleaner housing)
• Press sol high control
• Press sol low control
• Rear fuse block
• Red
• Sensor ground
• Starter relay output
• Starting/charging system
• Tach signal
• Tan
• Tcc pwm sol control
• Tp sensor input
• Trans range p
• Trans range sw a input
• Trans range sw c input
• Trans tcc release sw in
• Under- hood fuse block
• Vent sol fuse 10a