ENGINE PERFORMANCE – Pontiac Grand Prix SE 2003 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

3.1L VIN J

3.1L VIN J, Engine Performance Wiring Diagram (1 of 4) for Pontiac Grand Prix SE 2003

List of elements for 3.1L VIN J, Engine Performance Wiring Diagram (1 of 4) for Pontiac Grand Prix SE 2003:

• (eng harn, left side of eng compt 2 in from ebtcm breakout) s131
• (not used)
• (on transaxle stud)
• (pins 11, 14, 21, 23-27 not used)
• (pins 39-42 not used)
• (pins 49-52 not used)
• (pins 62-63 not used)
• (pins 66-67 not used)
• 1-2 ss valve control
• 2-3 ss valve control
• 3x ref high
• 3x ref low
• A12
• Anti-theft system
• Bypass control
• C10
• Camshaft position sensor (front of eng, below intake plenum)
• Canister vent fuse 10a
• Charge ind control
• Ckp sensor signal
• Cmp signal
• Cooling fan system
• Crankshaft position sensor (24x) (front of eng, behind harmonic balancer)
• Crankshaft position sensor (7x) (lower right side of of eng, below exhaust manifold)
• Cruise control system
• Cruise disable output
• D11
• Data link connector (under left side of dash, right of steering column)
• Ecm fuse 10a
• Ecm sense fuse 33 10a
• Egr sensor ground
• Egr val control (low)
• Elek ign fuse 25 15a
• Evap purge val drviver
• Fuel gauge siganl
• Fuel inj 1 driver
• Fuel inj 2 driver
• Fuel inj 3 driver
• Fuel inj 5 driver
• Fuel inj 6 driver
• G113
• G113 (on transaxle stud)
• High speed fans control
• Ho2s 2 low
• Hot at all times
• Hot coolant ind control
• Hot in run, bulb test or start
• Iac coil b high
• Iat sensor ground
• Ic control
• Ign1-uh fuse 21 15a
• Ignition
• Ignition control module (top right side of engine)
• Inj fuse 10a
• Instrument cluster system
• Instrument panel fuse block (behind right side of dash, in glove box opening)
• Iss hi signal
• Iss low signal
• Knock sensor (left side of eng, above starter)
• Knock sensor signal
• Low ref
• Low speed fans control
• Maf sensor signal
• Map 5v ref
• Map/ect sensor ground
• Nca
• Pcm ground
• Pnk
• Pnk b
• Power (battery)
• Powertrain control module (left front side of eng compt, in air cleaner assembly)
• Red
• S106
• S218 (dash harn, near blower motor breakout)
• Sensor ground
• Serial data (class 2)
• Serial data (uart)
• Spark plugs
• Starting/ charging system
• Tan
• Tcc brake switch input
• Tft sensor ground
• Theft deter fuel enable
• Tp sensor ground
• Tr switch input b
• Underhood fuse block (mounted to right strut tower)
• Vss high
• Vss low
• Vss output

3.1L VIN J, Engine Performance Wiring Diagram (2 of 4) for Pontiac Grand Prix SE 2003

List of elements for 3.1L VIN J, Engine Performance Wiring Diagram (2 of 4) for Pontiac Grand Prix SE 2003:

• (mounted to right strut tower) underhood fuse block
• A12
• Air fuse 39 30a
• Automatic transaxle
• B10
• D10
• Evaporative emissions canister purge solenoid (top right side of eng, behind ignition control module)
• Evaporative emissions canister vent solenoid (behind left side of rear fascia splash shield, behind wheelwell)
• F12
• Fuel injectors
• G101 (left side of front end upper tie bar)
• G113 (on transaxle stud)
• Hot at all times
• Instrument cluster system
• Nca
• Pnk
• Red
• S106
• S109
• Secondary air injection pump relay
• Secondary air injection reaction pump motor
• Stop- light switch (on brake pedal support c2 bracket)
• Transmission internal mode switch
• Underhood fuse block (mounted to right strut tower)
• Vehicle speed sensor (lower right side of eng compt, on transaxle)

3.1L VIN J, Engine Performance Wiring Diagram (3 of 4) for Pontiac Grand Prix SE 2003

List of elements for 3.1L VIN J, Engine Performance Wiring Diagram (3 of 4) for Pontiac Grand Prix SE 2003:

• (body harn, below rear window panel, 4 in from break- out to fuel tank harn connector)
• (fuel inj harn, on top of eng, 1 in from inj 3 breakout)
• (on bottom of engine oil pan) engine oil level indicator switch
• (on throttle body assembly) idle air control (iac) valve
• (on transaxle stud) g113
• (top rear of eng, in air cleaner duct) mass airflow sensor
• A/c refrigerant pressure sensor (on left side of eng compt, on accumulator)
• Automatic transaxle
• Automatic transmission fluid pressure manual valve position switch
• Coil a
• Coil b
• Engine coolant temperature (ect) sensor (top left rear of eng, below throttle body)
• Exhaust gas recirculation valve (top right rear of eng, near throttle body)
• Fuel tank pressure sensor (in fuel tank)
• Instrument cluster
• Intake air temperature (iat) sensor (left front of eng compt, in air cleaner duct)
• Iss sensor
• Malfunction indicator lamp
• Manifold absolute pressure sensor (top right side of eng, above valve cover)
• Pc solenoid valve
• Pnk
• Red
• S106
• S121
• S409
• Tan
• Throttle position sensor (on throttle body assembly)
• Underhood fuse block (mounted to right strut tower)

3.1L VIN J, Engine Performance Wiring Diagram (4 of 4) for Pontiac Grand Prix SE 2003

List of elements for 3.1L VIN J, Engine Performance Wiring Diagram (4 of 4) for Pontiac Grand Prix SE 2003:

• (not used) b4
• (pin 47-48,51-54 not used)
• (pins 12-15 not used)
• (pins 19-21 not used)
• (pins 23-24 not used)
• (pins 29,31 not used)
• (pins 62, 64-65 76-77, 79 not used)
• (right door sill)
• 1-2 shift solenoid
• 2-3 shift solenoid
• 5v ref
• 87a
• A/c compress clutch rly
• A/c refrig press signal
• A/c request signal
• Air conditioning system
• Air pump relay ctrl
• Auto transaxle fluid temperature sensor
• Automatic transaxle
• Change oil soon ind
• Ckp sensor batt (+)
• Ckp sensor ground
• Cmp sensor batt (+)
• Cmp sensor ground
• Cruise control system
• Cruise status
• Ect sensor signal
• Egr pintle position signal
• Egr solenoid control
• Egr valve 5v ref
• Eng oil level switch in
• Evap can vent sol cont
• Ftp 5v ref
• Fuel inj 4 driver
• Fuel level sensor
• Fuel level sensor input
• Fuel pump
• Fuel pump fuse 32 15a
• Fuel pump relay
• Fuel pump relay control
• Fuel tank
• Fuel tank press signal
• G117 (on transaxle stud)
• G302
• Gen terminal l control
• Heated oxygen sensor (ho2s) 1 (in right bank exhaust manifold)
• Heated oxygen sensor (ho2s) 2 (in exhaust system, rear of catalytic converter)
• Ho2s 1 ctrl
• Ho2s sensor 1 high
• Ho2s sensor 2 high
• Hot at all times
• Hot in run, bulb test or start
• Hot in run, bulb test, or start
• I/p-ign fuse 10a
• Iac coil a low
• Iac coil b low
• Iac valve a high
• Iat sensor signal
• Ign1-uh fuse 21 15a
• Instrument cluster system
• Instrument panel fuse block (behind right side of dash, in glove box opening)
• Low oil level ind control
• Low ref
• Map sensor signal
• Mil control
• Nca
• Pnk
• Pnk e
• Powertrain control module (left front side of eng compt, in air cleaner assembly)
• Red
• S105
• S209
• S406
• Sensor ground
• Sol a hi ctrl
• Sol a low ctrl
• Starting/ charging system
• Tach signal
• Tan
• Tcc fuse 10a
• Tcc pwm sol val control
• Tcc pwm solenoid
• Tcc rel sw
• Tft sensor signal
• Tp sensor signal
• Tps 5v ref
• Tr switch input a
• Tr switch input c
• Tr switch parity input
• Underhood fuse block (mounted to right strut tower)

3.8L VIN 1

3.8L VIN 1, Engine Performance Wiring Diagram (1 of 4) for Pontiac Grand Prix SE 2003

List of elements for 3.8L VIN 1, Engine Performance Wiring Diagram (1 of 4) for Pontiac Grand Prix SE 2003:

• (eng harn, left side of eng compt, 2 in from breakout to ebtcm)
• (ign harn, top of eng, near ign control module)
• (not used)
• (pin 11 not used)
• (pin 14 not used)
• (pins 21-27 not used)
• (pins 40-42 not used)
• (pins 49-52 not used)
• (pins 66-67 not used)
• 1-2 ss valve control
• 18x ref signal
• 2-3 ss valve control
• 3x ref signal
• A/c press sens ground
• A/t iss sensor high
• A/t iss sensor low
• A12
• Air solenoid relay ctrl
• Anti- theft system
• Anti-lock brakes system
• B12
• Bank 1 ks signal
• Bank 2 ks signal
• Battery
• Bypass control
• C10
• C12
• Camshaft position sensor (front of eng, above crankshaft pulley)
• Canister vent fuse 10a
• Charge indicator ctrl
• Cmp signal
• Cooling fans system
• Crankshaft position sensor (front of eng, behind harmonic balancer)
• Cruise control system
• Cruise disable output
• D11
• Data link connector (dlc) (under left side of dash, right of steering column)
• Ecm fuse 10a
• Ecm sense fuse 33 10a
• Ect sensor ground
• Egr sensor ground
• Egr val control (gnd)
• Elek ign fuse 25 15a
• Evap purge val drviver
• Fuel inj 1 driver
• Fuel inj 2 driver
• Fuel inj 4 driver
• Fuel inj 5 driver
• Fuel inj 6 driver
• Fuel level output
• G111 (on ignition control module bracket)
• G113 (on transaxle stud)
• High speed fans control
• Hos1 low
• Hos2 low
• Hot at all times
• Hot coolant ind ctrl
• Hot in run bulb test, or start
• Hot in run, bulb test or start
• Iac coil b high
• Iat sensor ground
• Ignition
• Ignition control
• Ignition control module (top left front of eng)
• Inj fuse 18 10a
• Instrument cluster system
• Instrument panel fuse block (behind right side of dash, in glove box opening)
• Knock sensor bank 1 (left side of eng, above starter)
• Knock sensor bank 2 (right side of eng, below exhaust manifold)
• Low speed fans control
• Maf sensor signal
• Map sensor 5v ref
• Map sensor ground
• Pcm ground
• Pnk
• Pnk p
• Powertrain control module (left front side of eng compt, in air cleaner assembly)
• Red
• Ref low
• Requested torque signal
• S106
• S131
• S144
• S145
• S218 (i/p harn, near blower motor)
• Serial data (class ii)
• Serial data (uart)
• Spark plugs
• Starting/charging system
• Tan
• Tcc brake switch input
• Tft sensor ground
• Theft fuel enable signal
• Tp sensor ground
• Tr switch input b
• Underhood fuse block (mounted to right strut tower)
• Vss high
• Vss low
• Vss output

3.8L VIN 1, Engine Performance Wiring Diagram (2 of 4) for Pontiac Grand Prix SE 2003

List of elements for 3.8L VIN 1, Engine Performance Wiring Diagram (2 of 4) for Pontiac Grand Prix SE 2003:

• (mounted to right strut tower) underhood fuse block
• (on transaxle stud)
• A12
• Automatic transmission
• B10
• D10
• Evaporative emissions (evap) canister purge solenoid valve (top right of eng, near center of valve cover)
• Evaporative emissions (evap) canister vent solenoid valve (behind left side of rear fascia splash shield, behind wheelwell)
• F12
• Fuel injectors
• G113
• Instrument cluster system
• Pnk
• Red
• S106
• Stop- light switch (on brake pedal support c2 bracket)
• Tan
• Transmission internal mode switch
• Underhood fuse block (mounted to right strut tower)
• Vehicle speed sensor (lower right side of eng compt, on transaxle)

3.8L VIN 1, Engine Performance Wiring Diagram (3 of 4) for Pontiac Grand Prix SE 2003

List of elements for 3.8L VIN 1, Engine Performance Wiring Diagram (3 of 4) for Pontiac Grand Prix SE 2003:

• (body harn, below rear window panel)
• (in exhaust system, rear of catalytic converter) heated oxygen sensor (ho2s) 2
• (in right bank exhaust manifold) heated oxygen sensor (ho2s) 1
• (on bottom of engine oil pan) engine oil level indicator switch
• (on throttle body assembly) idle air control (iac) valve
• (on transaxle stud)
• (top rear of eng, part of throttle body assembly) mass airflow (maf) sensor
• (vin 1)
• A tan
• A/c refrigerant pressure sensor (on left side of eng compt, on accumulator)
• Coil a
• Coil b
• D pnk
• Engine coolant temperature (ect) sensor (top left rear of eng, below throttle body)
• Exhaust gas recirculation (egr) valve (top right rear of eng, near throttle body)
• Fuel tank pressure sensor (in fuel tank)
• G117
• Hot in run, bulb test or start
• Ign1-uh fuse 21 15a
• Instrument cluster
• Intake air temperature (iat) sensor (left front of eng compt, in air cleaner duct)
• Malfunction indicator lamp
• Manifold absolute pressure (map) sensor (top of eng, on front of intake manifold)
• Nca
• Pnk
• Pnk a
• Pnk pnk
• Red
• S105
• S409
• Secondary air injection valve solenoid
• Supercharger boost control solenoid (above left valve cover)
• Tan
• Tcc fuse 31 10a
• Throttle position (tp) sensor (on throttle body assembly)
• Underhood fuse block (mounted to right strut tower)

3.8L VIN 1, Engine Performance Wiring Diagram (4 of 4) for Pontiac Grand Prix SE 2003

List of elements for 3.8L VIN 1, Engine Performance Wiring Diagram (4 of 4) for Pontiac Grand Prix SE 2003:

• (left side of front end upper tie bar) g101
• (not used)
• (on transaxle stud)
• (pin 47-48 not used)
• (pins 12-15 not used)
• (pins 29,31-32 not used)
• (pins 40-41 not used)
• (pins 51-54 not used)
• (pins 62 & 64-65 not used)
• (pins 70, 72-74 not used)
• (right door sill, forward of right front seat)
• (vin 1)
• 1-2 shift solenoid
• 2-3 shift solenoid
• 5v ref
• 87a
• A auto transaxle fluid temperature sensor
• A/c compress clutch rly
• A/c refrig press signal
• A/c request signal
• A/t iss sensor
• Air conditioning system
• Air fuse 39 30a
• Air pump relay
• Anti-lock brakes system
• Automatic transaxle
• Automatic transaxle fluid pressure manual valve position switch
• Boost ctrl sol
• Change oil soon ind ctrl
• Cruise control system
• Cruise engaged input
• Delivered torque signal
• Ect sensor signal
• Egr pintle position signal
• Egr pintle sens 5v ref
• Egr valve control
• Eng oil level sw input
• Evap can vent sol cont
• Ftp sensor 5v ref
• Fuel inj 3 control
• Fuel level sensor
• Fuel level sensor input
• Fuel pump
• Fuel pump fuse 32 15a
• Fuel pump relay
• Fuel pump relay control
• Fuel tank
• Fuel tank press signal
• G113
• G302
• Gen terminal l control
• Ho2s 1 signal
• Ho2s 2 signal
• Hot at all times
• Hot in run, bulb test, or start
• I/p ign fuse 10a
• Iac coil a high
• Iac coil a low
• Iac coil b low
• Iat sensor signal
• Instrument cluster system
• Instrument panel fuse block (behind right side of dash, in glove box opening)
• Low oil level ind ctrl
• Map sensor signal
• Mil control
• Nca
• Pc sol valve high
• Pc sol valve low
• Pc solenoid
• Pnk
• Powertrain control module (pcm) (left front side of eng compt, in air cleaner assembly)
• Red
• S106
• S209
• S406
• Secondary air injection pump relay
• Secondary air injection reaction pump motor
• Sensor ground
• Starting/ charging system
• Tach control
• Tan
• Tcc pwm solenoid
• Tcc pwm solenoid control
• Tcc release switch input
• Tft sensor signal
• Tp sensor 5v ref
• Tp sensor signal
• Tr switch input a
• Tr switch input c
• Tr switch parity input
• Underhood fuse block (mounted to right strut tower)

3.8L VIN K

3.8L VIN K, Engine Performance Wiring Diagram (1 of 4) for Pontiac Grand Prix SE 2003

List of elements for 3.8L VIN K, Engine Performance Wiring Diagram (1 of 4) for Pontiac Grand Prix SE 2003:

• (eng harn, left side of eng compt, 2 in from breakout to ebtcm)
• (ign harn, top of eng, near ign control module)
• (not used)
• (pin 11 not used)
• (pin 14 not used)
• (pins 21-27 not used)
• (pins 40-42 not used)
• (pins 49-52 not used)
• (pins 66-67 not used)
• 1-2 ss valve control
• 18x ref signal
• 2-3 ss valve control
• 3x ref signal
• A/c press sens ground
• A/t iss sensor high
• A/t iss sensor low
• A12
• Air solenoid relay ctrl
• Anti- theft system
• Anti-lock brakes system
• B12
• Bank 1 ks signal
• Bank 2 ks signal
• Battery
• Bypass control
• C10
• C12
• Camshaft position sensor (front of eng, above crankshaft pulley)
• Canister vent fuse 10a
• Charge indicator ctrl
• Cmp signal
• Cooling fans system
• Crankshaft position sensor (front of eng, behind harmonic balancer)
• Cruise control system
• Cruise disable output
• D11
• Data link connector (dlc) (under left side of dash, right of steering column)
• Ecm fuse 10a
• Ecm sense fuse 33 10a
• Ect sensor ground
• Egr sensor ground
• Egr val control (gnd)
• Elek ign fuse 25 15a
• Evap purge val drviver
• Fuel inj 1 driver
• Fuel inj 2 driver
• Fuel inj 4 driver
• Fuel inj 5 driver
• Fuel inj 6 driver
• Fuel level output
• G111 (on ignition control module bracket)
• G113 (on transaxle stud)
• High speed fans control
• Hos1 low
• Hos2 low
• Hot at all times
• Hot coolant ind ctrl
• Hot in run bulb test, or start
• Hot in run, bulb test or start
• Iac coil b high
• Iat sensor ground
• Ignition
• Ignition control
• Ignition control module (top left front of eng)
• Inj fuse 18 10a
• Instrument cluster system
• Instrument panel fuse block (behind right side of dash, in glove box opening)
• Knock sensor bank 1 (left side of eng, above starter)
• Knock sensor bank 2 (right side of eng, below exhaust manifold)
• Low speed fans control
• Maf sensor signal
• Map sensor 5v ref
• Map sensor ground
• Pcm ground
• Pnk
• Pnk p
• Powertrain control module (left front side of eng compt, in air cleaner assembly)
• Red
• Ref low
• Requested torque signal
• S106
• S131
• S144
• S145
• S218 (i/p harn, near blower motor)
• Serial data (class ii)
• Serial data (uart)
• Spark plugs
• Starting/charging system
• Tan
• Tcc brake switch input
• Tft sensor ground
• Theft fuel enable signal
• Tp sensor ground
• Tr switch input b
• Underhood fuse block (mounted to right strut tower)
• Vss high
• Vss low
• Vss output

3.8L VIN K, Engine Performance Wiring Diagram (2 of 4) for Pontiac Grand Prix SE 2003

List of elements for 3.8L VIN K, Engine Performance Wiring Diagram (2 of 4) for Pontiac Grand Prix SE 2003:

• (mounted to right strut tower) underhood fuse block
• (on transaxle stud)
• A12
• Automatic transmission
• B10
• D10
• Evaporative emissions (evap) canister purge solenoid valve (top right of eng, near center of valve cover)
• Evaporative emissions (evap) canister vent solenoid valve (behind left side of rear fascia splash shield, behind wheelwell)
• F12
• Fuel injectors
• G113
• Instrument cluster system
• Pnk
• Red
• S106
• Stop- light switch (on brake pedal support c2 bracket)
• Tan
• Transmission internal mode switch
• Underhood fuse block (mounted to right strut tower)
• Vehicle speed sensor (lower right side of eng compt, on transaxle)

3.8L VIN K, Engine Performance Wiring Diagram (3 of 4) for Pontiac Grand Prix SE 2003

List of elements for 3.8L VIN K, Engine Performance Wiring Diagram (3 of 4) for Pontiac Grand Prix SE 2003:

• (body harn, below rear window panel)
• (in exhaust system, rear of catalytic converter) heated oxygen sensor (ho2s) 2
• (in right bank exhaust manifold) heated oxygen sensor (ho2s) 1
• (on bottom of engine oil pan) engine oil level indicator switch
• (on throttle body assembly) idle air control (iac) valve
• (on transaxle stud)
• (top rear of eng, part of throttle body assembly) mass airflow (maf) sensor
• (vin 1)
• A tan
• A/c refrigerant pressure sensor (on left side of eng compt, on accumulator)
• Coil a
• Coil b
• D pnk
• Engine coolant temperature (ect) sensor (top left rear of eng, below throttle body)
• Exhaust gas recirculation (egr) valve (top right rear of eng, near throttle body)
• Fuel tank pressure sensor (in fuel tank)
• G117
• Hot in run, bulb test or start
• Ign1-uh fuse 21 15a
• Instrument cluster
• Intake air temperature (iat) sensor (left front of eng compt, in air cleaner duct)
• Malfunction indicator lamp
• Manifold absolute pressure (map) sensor (top of eng, on front of intake manifold)
• Nca
• Pnk
• Pnk a
• Pnk pnk
• Red
• S105
• S409
• Secondary air injection valve solenoid
• Supercharger boost control solenoid (above left valve cover)
• Tan
• Tcc fuse 31 10a
• Throttle position (tp) sensor (on throttle body assembly)
• Underhood fuse block (mounted to right strut tower)

3.8L VIN K, Engine Performance Wiring Diagram (4 of 4) for Pontiac Grand Prix SE 2003

List of elements for 3.8L VIN K, Engine Performance Wiring Diagram (4 of 4) for Pontiac Grand Prix SE 2003:

• (left side of front end upper tie bar) g101
• (not used)
• (on transaxle stud)
• (pin 47-48 not used)
• (pins 12-15 not used)
• (pins 29,31-32 not used)
• (pins 40-41 not used)
• (pins 51-54 not used)
• (pins 62 & 64-65 not used)
• (pins 70, 72-74 not used)
• (right door sill, forward of right front seat)
• (vin 1)
• 1-2 shift solenoid
• 2-3 shift solenoid
• 5v ref
• 87a
• A auto transaxle fluid temperature sensor
• A/c compress clutch rly
• A/c refrig press signal
• A/c request signal
• A/t iss sensor
• Air conditioning system
• Air fuse 39 30a
• Air pump relay
• Anti-lock brakes system
• Automatic transaxle
• Automatic transaxle fluid pressure manual valve position switch
• Boost ctrl sol
• Change oil soon ind ctrl
• Cruise control system
• Cruise engaged input
• Delivered torque signal
• Ect sensor signal
• Egr pintle position signal
• Egr pintle sens 5v ref
• Egr valve control
• Eng oil level sw input
• Evap can vent sol cont
• Ftp sensor 5v ref
• Fuel inj 3 control
• Fuel level sensor
• Fuel level sensor input
• Fuel pump
• Fuel pump fuse 32 15a
• Fuel pump relay
• Fuel pump relay control
• Fuel tank
• Fuel tank press signal
• G113
• G302
• Gen terminal l control
• Ho2s 1 signal
• Ho2s 2 signal
• Hot at all times
• Hot in run, bulb test, or start
• I/p ign fuse 10a
• Iac coil a high
• Iac coil a low
• Iac coil b low
• Iat sensor signal
• Instrument cluster system
• Instrument panel fuse block (behind right side of dash, in glove box opening)
• Low oil level ind ctrl
• Map sensor signal
• Mil control
• Nca
• Pc sol valve high
• Pc sol valve low
• Pc solenoid
• Pnk
• Powertrain control module (pcm) (left front side of eng compt, in air cleaner assembly)
• Red
• S106
• S209
• S406
• Secondary air injection pump relay
• Secondary air injection reaction pump motor
• Sensor ground
• Starting/ charging system
• Tach control
• Tan
• Tcc pwm solenoid
• Tcc pwm solenoid control
• Tcc release switch input
• Tft sensor signal
• Tp sensor 5v ref
• Tp sensor signal
• Tr switch input a
• Tr switch input c
• Tr switch parity input
• Underhood fuse block (mounted to right strut tower)