ENGINE PERFORMANCE – Buick Regal Limited 1994 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

3.1L

3.1L (VIN M), Engine Performance Wiring Diagrams (1 of 2) for Buick Regal Limited 1994

List of elements for 3.1L (VIN M), Engine Performance Wiring Diagrams (1 of 2) for Buick Regal Limited 1994:

• (grand prix
• (left front of engine compartment)
• (left front of engine compt on air cleaner)
• (lower left hush panel)
• (right rear of engine on transaxle)
• (top left rear of engine block)
• (top left side of engine block)
• (top rear of engine)
• (top rear of engine, on intake plenum)
• 5 volt ref
• A/c clutch relay
• A/c clutch relay control
• A/c on in
• A/c sensor
• A/c sensor in
• A10
• A11
• A12
• A13
• A14
• A15
• A16
• A17
• A18
• A19
• A20
• A21
• A22
• A23
• A24
• A25
• A26
• A27
• A28
• A29
• A30
• A31
• A32
• B10
• B11
• B12
• B13
• B14
• B15
• B16
• B17
• B18
• B19
• B20
• B21
• B22
• B23
• B24
• B25
• B26
• B27
• B28
• B29
• B30
• B31
• B32
• Battery
• Canister purge control
• Chime module, trip computer, heads- up display, instrument cluster & cruise control module
• Conn c1
• Conn c2
• Convenience center
• Coolant temp sensor
• Cruise control module
• Cruise disable
• Data link connector
• Digital exhaust gas recirculation assembly
• Ecm bat fuse 20a
• Ect sensor in
• Eng emis fuse 15a
• Engine oil level sensor
• Evaporative emission canister purge valve
• Exhaust manifold)
• Fan control relay
• Fan relay control
• Fuel pump motor feed
• Fuel pump relay ctrl
• Fuse 10a
• G110 (lower left front of engine, on transaxle stud)
• Ground
• Heated oxygen sensor (rear of engine in
• Heater & a/c control assembly
• Hot at all times
• Hot in run
• Hot in run, bulb test or start
• Idle air control valve
• Idle air ctrl valve (top of engine on front of throttle body)
• Instrument cluster
• Intake air temp sensor
• Low oil ind ctrl
• Low oil indic
• Malfunction ind control
• Malfunction indicator
• Manifold absolute pressure sensor
• Map sensor in
• Nca
• Oil level sensor in
• Only)
• Oxygen sensor in
• Park/neutral out
• Pnk
• Pnp switch in
• Powertrain control module (right side of engine compartment, forward of strut tower)
• Red
• Second gear start request
• Sensor ground
• Serial data in/out
• Shift sol a out
• Shift sol b out
• Sol a
• Sol a control
• Sol b
• Sol b control
• Sol c
• Sol c control
• Tan
• Tcc control
• Tcc sol out
• Throttle position sensor (rear of engine, right side of throttle body)
• Tps sensor in
• Trans temp sensor in
• Underhood electrical center #1
• Vehicle speed out
• Vehicle speed sensor
• Vehicle speed sensor in

3.1L (VIN M), Engine Performance Wiring Diagrams (2 of 2) for Buick Regal Limited 1994

List of elements for 3.1L (VIN M), Engine Performance Wiring Diagrams (2 of 2) for Buick Regal Limited 1994:

• (left side of i/p)
• (lower left front of engine on transaxle stud)
• 24x crank position sensor (front left of engine, on timing chain cover)
• 87a
• A nca
• Anti-theft module
• Anti-theft system in
• Automatic transaxle
• B nca
• C nca
• C10
• C11
• C12
• C13
• C14
• C15
• C16
• C17
• C18
• C19
• C20
• C21
• C22
• C23
• C24
• C25
• C26
• C27
• C28
• C29
• C30
• C31
• C32
• Cam position sensor in
• Camshaft position sensor (front top of engine)
• Conn c3
• Crank pos sensor in
• Crank/cam pos sensor rtn
• Cruise control module
• Cruise on in
• D nca
• Ecm bat fuse 20a
• Ecm/ign fuse 15a
• Elec/ign fuse 15a
• Est bypass sig
• Est ctrl sig
• F/inj fuse 15a
• Fuel inj 1 out
• Fuel inj 2 out
• Fuel inj 3 out
• Fuel inj 4 out
• Fuel inj 5 out
• Fuel inj 6 out
• Fuel pump switch/oil pressure sensor sw (front center of engine near oil filter)
• Fuel pump priming conn
• Fuel pump relay (right side of engine compt fwd of strut tower)
• Fuel tank unit (top of fuel tank)
• Fuse 10a
• Fuse block: i/p
• G110
• G110 (lower front of engine, on transaxle stud)
• G202 (behind i/p
• G300 (under left front seat)
• Ground
• Hot at all times
• Hot in run
• Hot in run, bulb test, or start
• Iat sensor in
• Ignition
• Ignition amplifier and switching module
• Ignition coil assembly (right rear of engine compt)
• Inj
• Knock sensor (lower right rear of engine block)
• Knock sensor in
• Low resolution 3x crankshaft position sensor
• Nca
• Of mag bracket)
• On right side
• Park/neutral position switch (left rear of engine, right top of transaxle)
• Plugs spark
• Pnk
• Powertrain control module (right side of engine compartment forward of strut tower)
• Red
• Ref pulse hi in
• Ref pulse low in
• Second gear start switch (behind left side of i/p)
• Shift sol a
• Shift sol b
• Spark plugs
• Tachometer
• Tan
• Tcc fuse 15a
• Tcc pwm sol
• Tcc/brake switch
• Trans temp switch
• Transaxle converter clutch
• Under- hood elect center #1
• Underhood electrical center #1

3.8L

3.8L (VIN L), Engine Performance Wiring Diagrams (1 of 3) for Buick Regal Limited 1994

List of elements for 3.8L (VIN L), Engine Performance Wiring Diagrams (1 of 3) for Buick Regal Limited 1994:

• (right side of engine compartment
• 15a
• 4k/mi speed
• A/c comp rly
• A/c comp rly ctrl
• A/c compressor controls
• A/c head pressure switch
• A/c request input
• A10
• A11
• A12
• A13
• A14
• A15
• A16
• A17
• A18
• A19
• A20
• A21
• A22
• A23
• A24
• A25
• A26
• A27
• A28
• A29
• A30
• A31
• A32
• Automatic transmission
• B10
• B11
• B12
• B13
• B14
• B15
• B16
• B17
• B18
• B19
• B20
• B21
• B22
• B23
• B24
• B25
• B26
• B27
• B28
• B29
• B30
• B31
• B32
• Camshaft ref input
• Center #1
• Conn c1
• Conn c2
• Cooling fan 1 rly
• Cooling fan 2 rly
• Cooling fan request
• Cruise control module
• Cruise control module instrument cluster passive restraint control module component center
• Cruise disable
• Cruise engaged signal
• Data link connector
• Ecm/ing
• Egr 5 volt ref
• Electrical
• Eng emis fuse 15a
• F/injn fuse 15a
• Fan ctrl #1 relay
• Fan ctrl #2 relay
• Forward of strut tower)
• Fuel ctrl ref in
• Fuel inj enable
• Fuel injector #1 ctrl
• Fuel injector #2 ctrl
• Fuel injector #3 ctrl
• Fuel injector #4 ctrl
• Fuel injector #5 ctrl
• Fuel injector #6 ctrl
• Fuel injectors
• Fuel pump relay ctrl
• Fuse
• Fused battery feed
• Fused ign feed
• G120 (right side of engine)
• Ground
• Hot in run
• Hot in run, bulb test or start
• Iac a hi
• Iac a lo
• Iac b hi
• Iac b lo
• Iat ground
• Idle air control motor (top left side of engine)
• Ign
• Ign module bypass ctrl
• Ignition ic output
• Linear egr ctrl
• Linear exhaust gas recirculation (egr) valve (upper right side of engine)
• Maf sensor in
• Malfunction ind ctrl
• Mass air flow sensor (top left side of engine)
• Pnk
• Powertrain control module (pcm)
• Serial data line
• Shift a sol
• Shift b sol
• Spark ref in
• Tan
• Tcc enable sol
• Tcc fuse 15a
• Tcc pwm sol
• Tcc/pwm solenoid ctrl
• Theft deterrent module
• Underhood
• Vehicle speed sensor (right rear of engine)
• Vss input hi
• Vss input lo

3.8L (VIN L), Engine Performance Wiring Diagrams (2 of 3) for Buick Regal Limited 1994

List of elements for 3.8L (VIN L), Engine Performance Wiring Diagrams (2 of 3) for Buick Regal Limited 1994:

• "service
• (right side of engine compartment
• (right side of engine)
• (under left front seat)
• 20a
• 5 volt ref
• 87a
• Block
• C10
• C11
• C12
• C13
• C14
• C15
• C16
• C17
• C18
• C19
• C20
• C21
• C22
• C23
• C24
• C25
• C26
• C27
• C28
• C29
• C30
• C31
• C32
• Center #1
• Conn c3
• D10 pnk
• Ecm bat
• Egr position input
• Electrical
• Eng emis fuse 15a
• Engine coolant temp input
• Engine coolant temp sensor (top left side of engine)
• Engine data sens ground
• Engine soon"
• Evap canister purge sol
• Evaporative emissions canister purge solenoid (top of engine on intake plenum)
• Forward of strut tower)
• Fuel pump prime connector
• Fuel pump relay (right side of engine compt, forward of strut tower)
• Fuel pump/ oil pressure sensor switch (right front of engine near oil filter)
• Fuel tank unit (top of fuel tank)
• Fuse
• G120
• G120 (right side of engine)
• G300
• Ho2s 1 input hi
• Ho2s 1 input-lo
• Ho2s 2 input-hi
• Ho2s 2 input-lo
• Hot at all times
• Hot in run
• Hot in run, bulb
• Indic fuse 10a
• Indicator
• Instrument cluster
• Intake air temp input
• Intake air temp sensor (left front of engine compartment)
• Knock sensor (rear right side of engine)
• Knock sensor input
• Park/neutral position switch (left rear of engine, right top of transaxle)
• Pnk
• Powertrain control module (pcm)
• Red
• Tan
• Tcc brake switch input
• Tcc sol ctrl
• Tcc/brake switch (brake pedal support)
• Test or start
• Throttle position input
• Throttle position sensor (mounted to sfi unit)
• Trans range input a
• Trans range input b
• Trans range input c
• Trans range parity input
• Trans temp input
• Transaxle sol a ctrl
• Transaxle sol b ctrl
• Transmission temp sensor (automatic transaxle)
• Underhood

3.8L (VIN L), Engine Performance Wiring Diagrams (3 of 3) for Buick Regal Limited 1994

List of elements for 3.8L (VIN L), Engine Performance Wiring Diagrams (3 of 3) for Buick Regal Limited 1994:

• 10v power
• A tan
• Buffer/ amplifier
• Bypass switch
• Camshaft position sensor (lower right side of engine, above lower pulley)
• Catalyst monitor (ho2s 2) (exhaust pipe, behind catalytic converter)
• Clstr fuse 15a
• Crankshaft sensor (lower right side of engine)
• Electronic ignition (ei) module (top right front of engine)
• Elek ign fuse 15a
• Eng emis fuse 15a
• G120 (right side of engine)
• G125 (front of engine, on transaxle stud)
• G204 (behind left side of i/p, on steering column support)
• Hall effect sensor
• Heated oxygen sensor (ho2s 1) (rear of engine, in exhaust manifold)
• Hot in run
• Hot in run, bulb test or start
• Ignition coils
• Pnk
• Sensor ground
• Spark plugs
• Sws/ amplifier
• Tach
• Tachometer (instrument cluster)
• Tan
• Underhood electrical center #1