ENGINE PERFORMANCE – Buick Riviera 1998 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

3.8L

3.8L (VIN 1), Engine Performance Wiring Diagrams (1 of 4) for Buick Riviera 1998

List of elements for 3.8L (VIN 1), Engine Performance Wiring Diagrams (1 of 4) for Buick Riviera 1998:

• (body harn, 3 cm from pcm conn) s295
• (body harn, 38 cm from pcm conn)
• (body harn, right rear of pass compt)
• (lower center front of eng) knock sensor (ks) bank 1
• 1-2 shift sol control
• 18x ref
• 18x reference
• 2-3 shift sol control
• 3x ref
• 3x reference
• A/t speed sensor high
• A/t speed sensor low
• Abs/tcc switch (on brake pedal support)
• Acc
• Anti-theft fuel enable
• Anti-theft system
• Bank 1 ks input
• Bank 2 ks input
• Battery
• Body ctrl module, magna- steer module & cluster
• Bypass
• Ckp 18x sig
• Ckp sync sig
• Clng fan fuse 10a
• Cmp input
• Cmp output
• Cmp signal
• Cooling fan system
• Cruise control
• Cruise disable/inhibit in
• Data link connector (under left side of dash)
• Desired torque input
• Ect sensor ground
• Egr control ground
• Electronic brake/traction control module (left side eng compt, attached to left strut tower)
• Evap purge valve cont
• Evaporative emissions (evap) purge solenoid (top right rear of eng)
• Fuel inj 1 control
• Fuel inj 2 control
• Fuel inj 4 control
• Fuel inj 5 control
• Fuel inj 6 control
• Fuel pump speed control
• G117 (lower right rear of engine)
• G117 (right rear of engine)
• G119 (right front of engine)
• Ground
• Hi speed cool fan cont
• Ho2s 1 low
• Ho2s 2 low
• Hot at all times
• Hot in run
• Hot in unlock, run and start
• I/p fuse block
• Iac coil b high
• Iat sensor ground
• Ign
• Ign control
• Ign voltage
• Ignition
• Ignition control
• Ignition control (ic) module (right top front of engine)
• Ignition switch
• Knock sensor (ks) bank 2 (under right exhst manifold)
• Lo speed cool fan cont
• Lock
• Maf sensor input
• Map sensor ground
• Mass air flow (maf) sensor (top left rear of engine)
• Nca
• Off
• Pcm fuse 10a
• Pcm ground
• Pcm/ vats fuse 20a
• Pnk
• Pnk a
• Powertrain control module (pcm) (right side of dash)
• Red
• Ref low
• Reference low
• Right rear junction block
• Run
• S116
• S245
• S248
• S261
• S297
• S427
• Sensor ground
• Serial data
• Serial data (class 2)
• Signal
• Start
• Tach ctrl
• Tan
• Tcc switch input
• Trans range a input
• Trans range sw b input
• Vehicle speed sensor (vss) (right rear of eng compt, on transaxle)
• Vss high
• Vss low
• Vss output

3.8L (VIN 1), Engine Performance Wiring Diagrams (2 of 4) for Buick Riviera 1998

List of elements for 3.8L (VIN 1), Engine Performance Wiring Diagrams (2 of 4) for Buick Riviera 1998:

• (ign cont module harn, 26.5 cm from ign cont module)
• (right rear of engine)
• (top right front of transaxle) park/neutral position (pnp) switch
• 1-2 shift sol
• 2-3 shift sol
• A/t fluid pressure manual valve position switch
• A/t fluid temp sensor
• A/t input shaft speed sensor
• Automatic transaxle (4t65-e)
• Camshaft position sensor (cmp) (right front of eng)
• Crankshaft position sensor (ckp) (right front of eng)
• Fuel injectors
• G117
• Hot in run and start
• I/p fuse block
• Inj fuse 15a
• No.1
• No.2
• No.3
• No.4
• No.5
• No.6
• Pnk
• Pressure control solenoid
• Red
• Red a
• Rev
• S129
• S135
• S136 (ign cont module harn, 20 cm from ign cont module)
• S297
• Tan
• Tcc pwm sol
• Tcc rel

3.8L (VIN 1), Engine Performance Wiring Diagrams (3 of 4) for Buick Riviera 1998

List of elements for 3.8L (VIN 1), Engine Performance Wiring Diagrams (3 of 4) for Buick Riviera 1998:

• (below left rear seat) g304
• (body harn, near base of right strut tower)
• (body harness, 55 cm from pcm)
• (eng harn, 8 cm from iacv)
• (right rear of engine)
• (top rear of engine) evaporative emissions canister vent solenoid
• A/c refrigerant pressure sensor (front of eng compt) (vin k) (left rear of eng compt) (vin 1)
• Compt)
• Exhaust gas recirculation (egr) valve (top left side of engine)
• F/pump fuse 20a
• Feed fuel pump
• Fuel pump
• Fuel pump control module (on left
• Fuel pump relay
• Fuel tank pressure sensor (in fuel tank)
• Fuel tank unit
• G117
• Ground
• High fuel pump
• Hot at all times
• Intake air temperature (iat) sensor (on air intake tube)
• Left rear junction block
• Low fuel pump
• Manifold absolute pressure (map) sensor (top right side of engine)
• Pnk
• Red
• Right rear junction block
• S154
• S282
• S291
• S297
• S410
• Side of luggage pwm control fuel pump
• Tan
• Throttle position (tp) sensor (on throttle body)

3.8L (VIN 1), Engine Performance Wiring Diagrams (4 of 4) for Buick Riviera 1998

List of elements for 3.8L (VIN 1), Engine Performance Wiring Diagrams (4 of 4) for Buick Riviera 1998:

• (right rear of engine)
• 5 volt reference a
• 5 volt reference b
• A/c comp relay control
• A/c ref press sensor in
• A/c request
• A/c system
• A/t fluid temp input
• Boost control solenoid (top left side of engine)
• Boost solenoid control
• Charging system
• Cruise control system
• Cruise status
• Delivered torque input
• Desired torque control
• Ect sensor input
• Egr pintel position input
• Egr valve control
• Electronic brake/traction control module (left side eng compt, attached to left strut tower)
• Eng oil level sw input
• Engine coolant temperature (ect) sensor (thermostat housing)
• Engine oil level switch (lower left of engine)
• Evap solenoid control
• F15
• Fuel inj 3 control
• Fuel pump relay control
• Fuel tank press sensor
• G101 (right side of engine compt)
• G117
• Gen term f monitor
• Gen term l control
• Heated oxygen sensor 1 (ho2s 1) (in exhaust manifold)
• Heated oxygen sensor 2 (ho2s 2) (rear of cat converter)
• Ho2s 1 input
• Ho2s 2 input
• Hot in run and start
• I/p fuse block
• Iac coil a high
• Iac coil a low
• Iac coil b low
• Iat sensor input
• Idle air control (iac) valve (on top of throttle body)
• Ign 1 fuse 10a
• Ignition
• Instrument cluster
• Instrument cluster system
• Low oil lamp
• Maf fuse 10a
• Map sensor input
• Mil control
• Mil ind
• Nca
• Oxy sen fuse 10a
• Pnk
• Powertrain control module (pcm) (right side of dash)
• Press sol high control
• Press sol low control
• Red
• S115
• S130
• S131
• S155
• S160
• S258
• Sensor ground
• Tach input
• Tan
• Tcc pwm sol control
• Tp sensor input
• Trans range b input
• Trans range c input
• Trans range sw c input
• Trans range sw d input
• Trans range sw p input
• Trans tcc release sw in

3.8L (VIN K), Engine Performance Wiring Diagrams (1 of 4) for Buick Riviera 1998

List of elements for 3.8L (VIN K), Engine Performance Wiring Diagrams (1 of 4) for Buick Riviera 1998:

• (body harn, 3 cm from pcm conn) s295
• (body harn, 38 cm from pcm conn)
• (body harn, right rear of pass compt)
• (lower center front of eng) knock sensor (ks) bank 1
• 1-2 shift sol control
• 18x ref
• 18x reference
• 2-3 shift sol control
• 3x ref
• 3x reference
• A/t speed sensor high
• A/t speed sensor low
• Abs/tcc switch (on brake pedal support)
• Acc
• Anti-theft fuel enable
• Anti-theft system
• Bank 1 ks input
• Bank 2 ks input
• Battery
• Body ctrl module, magna- steer module & cluster
• Bypass
• Ckp 18x sig
• Ckp sync sig
• Clng fan fuse 10a
• Cmp input
• Cmp output
• Cmp signal
• Cooling fan system
• Cruise control
• Cruise disable/inhibit in
• Data link connector (under left side of dash)
• Desired torque input
• Ect sensor ground
• Egr control ground
• Electronic brake/traction control module (left side eng compt, attached to left strut tower)
• Evap purge valve cont
• Evaporative emissions (evap) purge solenoid (top right rear of eng)
• Fuel inj 1 control
• Fuel inj 2 control
• Fuel inj 4 control
• Fuel inj 5 control
• Fuel inj 6 control
• Fuel pump speed control
• G117 (lower right rear of engine)
• G117 (right rear of engine)
• G119 (right front of engine)
• Ground
• Hi speed cool fan cont
• Ho2s 1 low
• Ho2s 2 low
• Hot at all times
• Hot in run
• Hot in unlock, run and start
• I/p fuse block
• Iac coil b high
• Iat sensor ground
• Ign
• Ign control
• Ign voltage
• Ignition
• Ignition control
• Ignition control (ic) module (right top front of engine)
• Ignition switch
• Knock sensor (ks) bank 2 (under right exhst manifold)
• Lo speed cool fan cont
• Lock
• Maf sensor input
• Map sensor ground
• Mass air flow (maf) sensor (top left rear of engine)
• Nca
• Off
• Pcm fuse 10a
• Pcm ground
• Pcm/ vats fuse 20a
• Pnk
• Pnk a
• Powertrain control module (pcm) (right side of dash)
• Red
• Ref low
• Reference low
• Right rear junction block
• Run
• S116
• S245
• S248
• S261
• S297
• S427
• Sensor ground
• Serial data
• Serial data (class 2)
• Signal
• Start
• Tach ctrl
• Tan
• Tcc switch input
• Trans range a input
• Trans range sw b input
• Vehicle speed sensor (vss) (right rear of eng compt, on transaxle)
• Vss high
• Vss low
• Vss output

3.8L (VIN K), Engine Performance Wiring Diagrams (2 of 4) for Buick Riviera 1998

List of elements for 3.8L (VIN K), Engine Performance Wiring Diagrams (2 of 4) for Buick Riviera 1998:

• (ign cont module harn, 26.5 cm from ign cont module)
• (right rear of engine)
• (top right front of transaxle) park/neutral position (pnp) switch
• 1-2 shift sol
• 2-3 shift sol
• A/t fluid pressure manual valve position switch
• A/t fluid temp sensor
• A/t input shaft speed sensor
• Automatic transaxle (4t65-e)
• Camshaft position sensor (cmp) (right front of eng)
• Crankshaft position sensor (ckp) (right front of eng)
• Fuel injectors
• G117
• Hot in run and start
• I/p fuse block
• Inj fuse 15a
• No.1
• No.2
• No.3
• No.4
• No.5
• No.6
• Pnk
• Pressure control solenoid
• Red
• Red a
• Rev
• S129
• S135
• S136 (ign cont module harn, 20 cm from ign cont module)
• S297
• Tan
• Tcc pwm sol
• Tcc rel

3.8L (VIN K), Engine Performance Wiring Diagrams (3 of 4) for Buick Riviera 1998

List of elements for 3.8L (VIN K), Engine Performance Wiring Diagrams (3 of 4) for Buick Riviera 1998:

• (below left rear seat) g304
• (body harn, near base of right strut tower)
• (body harness, 55 cm from pcm)
• (eng harn, 8 cm from iacv)
• (right rear of engine)
• (top rear of engine) evaporative emissions canister vent solenoid
• A/c refrigerant pressure sensor (front of eng compt) (vin k) (left rear of eng compt) (vin 1)
• Compt)
• Exhaust gas recirculation (egr) valve (top left side of engine)
• F/pump fuse 20a
• Feed fuel pump
• Fuel pump
• Fuel pump control module (on left
• Fuel pump relay
• Fuel tank pressure sensor (in fuel tank)
• Fuel tank unit
• G117
• Ground
• High fuel pump
• Hot at all times
• Intake air temperature (iat) sensor (on air intake tube)
• Left rear junction block
• Low fuel pump
• Manifold absolute pressure (map) sensor (top right side of engine)
• Pnk
• Red
• Right rear junction block
• S154
• S282
• S291
• S297
• S410
• Side of luggage pwm control fuel pump
• Tan
• Throttle position (tp) sensor (on throttle body)

3.8L (VIN K), Engine Performance Wiring Diagrams (4 of 4) for Buick Riviera 1998

List of elements for 3.8L (VIN K), Engine Performance Wiring Diagrams (4 of 4) for Buick Riviera 1998:

• (right rear of engine)
• 5 volt reference a
• 5 volt reference b
• A/c comp relay control
• A/c ref press sensor in
• A/c request
• A/c system
• A/t fluid temp input
• Boost control solenoid (top left side of engine)
• Boost solenoid control
• Charging system
• Cruise control system
• Cruise status
• Delivered torque input
• Desired torque control
• Ect sensor input
• Egr pintel position input
• Egr valve control
• Electronic brake/traction control module (left side eng compt, attached to left strut tower)
• Eng oil level sw input
• Engine coolant temperature (ect) sensor (thermostat housing)
• Engine oil level switch (lower left of engine)
• Evap solenoid control
• F15
• Fuel inj 3 control
• Fuel pump relay control
• Fuel tank press sensor
• G101 (right side of engine compt)
• G117
• Gen term f monitor
• Gen term l control
• Heated oxygen sensor 1 (ho2s 1) (in exhaust manifold)
• Heated oxygen sensor 2 (ho2s 2) (rear of cat converter)
• Ho2s 1 input
• Ho2s 2 input
• Hot in run and start
• I/p fuse block
• Iac coil a high
• Iac coil a low
• Iac coil b low
• Iat sensor input
• Idle air control (iac) valve (on top of throttle body)
• Ign 1 fuse 10a
• Ignition
• Instrument cluster
• Instrument cluster system
• Low oil lamp
• Maf fuse 10a
• Map sensor input
• Mil control
• Mil ind
• Nca
• Oxy sen fuse 10a
• Pnk
• Powertrain control module (pcm) (right side of dash)
• Press sol high control
• Press sol low control
• Red
• S115
• S130
• S131
• S155
• S160
• S258
• Sensor ground
• Tach input
• Tan
• Tcc pwm sol control
• Tp sensor input
• Trans range b input
• Trans range c input
• Trans range sw c input
• Trans range sw d input
• Trans range sw p input
• Trans tcc release sw in