ENGINE PERFORMANCE – Buick Lucerne Super 2008 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

3.8L VIN 2

3.8L VIN 2, Engine Performance Wiring Diagram (1 of 5) for Buick Lucerne Super 2008

List of elements for 3.8L VIN 2, Engine Performance Wiring Diagram (1 of 5) for Buick Lucerne Super 2008:

• (1 in) from branch for x139)
• (in engine harness, approximately 3 cm
• (left side of oil pan) engine oil level (eol) switch
• (lower left rear of engine)
• (on top front of engine) manifold absolute pressure (map) sensor
• (on top right rear of engine) exhaust gas recirculation (egr) valve
• (pins 62-72 not used)
• 5 volt ref 1
• 5 volt ref 2
• Camshaft sig
• Ect sensor sig
• Egr pos sig
• Egr sol high
• Egr sol low
• Engine coolant temperature (ect) sensor (left rear of engine)
• Engine oil pressure (eop) switch (near oil filter)
• Evap purge sol
• Evaporative emission (evap) canister purge solenoid valve (on top right rear of engine)
• Fuel inj 1 ctrl
• Fuel inj 2 ctrl
• Fuel inj 3 ctrl
• Fuel inj 4 ctrl
• Fuel inj 5 ctrl
• Fuel inj 6 ctrl
• Fuel injectors (1, 3 & 5: top left side of engine) (2, 4 & 6: top right side of engine)
• G112
• G112 (lower left rear of engine)
• Gen field
• Gen on sig
• Heated oxygen sensor (ho2s) 1 (on right exhaust manifold)
• Ho2s heater 1
• Ho2s low ref
• Ho2s ref volt
• Ic timing ctrl
• Ic timing sig
• J109
• Knock sensor (ks) 1 (on left side of engine, near starter)
• Knock sensor (ks) 2 (on right side of engine, below exhaust manifold)
• Knock sensor 1
• Knock sensor 2
• Low eng speed
• Low ref
• Map sensor sig
• Med eng speed
• Nca
• Oil level sw
• Oil press sig
• Pnk
• Powertrain control module (pcm) (left front of engine compt, inside air cleaner housing)
• Relay control
• Signal ground
• Starting/charging system
• Tan
• Tan/pnk
• Uart data

3.8L VIN 2, Engine Performance Wiring Diagram (2 of 5) for Buick Lucerne Super 2008

List of elements for 3.8L VIN 2, Engine Performance Wiring Diagram (2 of 5) for Buick Lucerne Super 2008:

• (lower left rear of engine)
• (not used)
• (on left front of engine, next to crankshaft balancer) crankshaft position (ckp) sensor
• (on right front of engine compt, forward of strut tower) underhood fuse block
• (on right front of engine) camshaft position (cmp) sensor
• 12-volt ref
• 5 volt ref
• Accelerator pedal position (app) sensor (top of accelerator pedal assembly)
• App sensor 1
• App sensor 2
• Body control module (bcm) (right of glove box)
• Ckp sen 1 sig
• Ckp sen 2 sig
• Cmp sens sig
• Cmp sig
• Firing order 1-6-5-4-3-2
• From ecm/ pcm (fuse 9) (diagram 4 of 5)
• From emis dev (fuse 7) (diagram 4 of 5)
• Fuel inj even fuse 3 15a
• Fuel inj odd fuse 2 15a
• G112
• G115 (lower left rear of engine)
• Gnd
• Ground
• Hall effect sensor
• Ic timing ctrl
• Ic timing sig
• Ign 1 volt
• Ignition coils
• Ignition control module (icm) (at left front of engine, under ignition coils)
• J145
• J164
• Low ref
• Low speed sig
• Medium speed sig
• Nca
• P pnk
• Pnk
• Primary uart
• Sec uart
• Spark plugs
• Stop lamp
• Stop lamp switch signal
• Throttle actuator control (tac) module (on throttle body assembly)
• Trans/ ign 1 fuse 8 10a
• Underhood fuse block (on right front of engine compt, forward of strut tower)
• Vehicle spd
• Volt ign 1
• X110

3.8L VIN 2, Engine Performance Wiring Diagram (3 of 5) for Buick Lucerne Super 2008

List of elements for 3.8L VIN 2, Engine Performance Wiring Diagram (3 of 5) for Buick Lucerne Super 2008:

• (not used)
• 1-2 shift solenoid valve
• 2-3 shift solenoid (ss) valve
• A red
• A/t fluid temperature (tft) sensor valve
• A/t input shaft speed (iss) sensor
• At iss low sig
• Automatic transmission
• Automatic transmission fluid pressure (tfp) manual valve position switch
• Code a
• Code b
• Code c
• G112 (lower left rear of engine)
• Ho2s 2 sig high
• Ho2s 2 sig low
• Ho2s heater 2
• Iat sensor sig
• Interlock system
• J115
• Lockout sol ctrl
• Low ref
• Maf sensor sig
• P/n
• Parity
• Pc sol hi ctrl
• Pnk
• Powertrain control module (pcm) (left front of engine compt, inside air cleaner housing)
• Pre sen sig
• Pressure control (pc) solenoid valve
• Red
• Shift
• Shift sol
• Sol low ctrl
• Tan
• Tan/pnk
• Tcc release switch
• Tcc sol
• Tcc sw sig
• Tft sensor sig
• Torque converter clutch solenoid valve
• Tr sig a
• Tr sig b
• Tr sig c
• Tr sig p
• Transmission internal mode switch (ims)
• Vehicle speed sensor (vss) (in transmission)
• Vss sig high
• Vss sig low

3.8L VIN 2, Engine Performance Wiring Diagram (4 of 5) for Buick Lucerne Super 2008

List of elements for 3.8L VIN 2, Engine Performance Wiring Diagram (4 of 5) for Buick Lucerne Super 2008:

• (lower left rear of engine) g112
• (lower left rear of engine) g114
• (under vehicle, after catalytic converter)
• Air pump fuse 22 50a
• Air pump relay
• Air sol fuse 5 15a
• Air sol relay
• Ecm/crnk fuse 1 15a
• Ecm/pcm fuse 9 10a
• Emis dev fuse 7 15a
• G112 (lower left rear of engine)
• Gnd
• Heated oxygen sensor (ho2s) 2
• Hot at all times
• Hot in run or start
• Ign relay 36
• J101
• J108
• Mass air flow (maf)/intake air temperature (iat) sensor (left side of engine compartment, in air intake tube)
• Nca
• Oxy snsr fuse 6 15a
• Pnk
• Pwr/trn relay
• Red
• Rly ctrl
• Secondary air injection (air) check valve (w/ california pzev emission system)
• Secondary air injection (air) pump (w/ california pzev emission system)
• Sens sig maf
• Strtr relay 30
• Tan
• Tan d
• Tan/pnk
• To fuel inj even (fuse 3) (diagram 2 of 5)
• To trans/ ign 1 (fuse 8) (diagram 2 of 5)
• Underhood fuse block (on right front of engine compt, forward of strut tower)

3.8L VIN 2, Engine Performance Wiring Diagram (5 of 5) for Buick Lucerne Super 2008

List of elements for 3.8L VIN 2, Engine Performance Wiring Diagram (5 of 5) for Buick Lucerne Super 2008:

• (in body harness, approximately 5 cm (2 in) from breakout for electronic suspension control module) j316
• (right front wall of luggage compartment) g403
• (under left rear seat)
• 5 volt ref 1
• A/c clutch relay
• A/c press sig
• A/c refrigerant pressure sensor (near a/c compressor, on hose assembly)
• Acc
• Air conditioning system
• Battery
• Body control module (bcm) (right of glove box)
• Computer data lines system
• Cooling fans system
• Driver information center (dic)
• Ecm/tcm fuse 5 15a
• Evap vent sol
• Evaporative emissions (evap) canister vent solenoid valve (below rear of vehicle, on evap canister)
• F/pmp fuse 1 20a
• F10 x3
• Fuel level sig
• Fuel pump & sender assembly (top of fuel tank)
• Fuel pump relay
• Fuel pump relay 57
• Fuel tank press
• Fuel tank pressure (ftp) sensor (on top of fuel tank)
• G300 (under driver's seat)
• G301
• Gnd
• High fan
• Hot at all times
• Ign
• Ignition 1
• Ignition switch
• Instrument panel cluster (ipc)
• J201
• J203
• Logic
• Low fan
• Low ref
• Malfunction indicator lamp (mil)
• Mil control
• Off
• Pnk
• Powertrain control module (pcm) (left front of engine compt, inside air cleaner housing)
• Rear fuse block (below left side of rear seat)
• Relay control
• Relay ctrl
• Run
• Ser data bus +
• Ser data bus -
• Sol can fuse 34 10a
• Start
• Starter enable
• Starting/charging system
• Stop lamp sw
• Tan
• Vehicle speed sig
• Wakeup data

4.6L VIN 9

4.6L VIN 9, Engine Performance Wiring Diagram (1 of 5) for Buick Lucerne Super 2008

List of elements for 4.6L VIN 9, Engine Performance Wiring Diagram (1 of 5) for Buick Lucerne Super 2008:

• (left rear of engine compartment) transmission control module (tcm)
• (lower left rear of engine) g112
• (right of glove box) body control module (bcm)
• (under driver's seat) g300
• 5v ref 1
• 5v ref 2
• A/c com clutch rly
• Accelerator pedal position (app) sensor (top of accelerator pedal assembly) pedal assembly)
• Accessory wake up
• Air conditioning system
• App sensor 1 sig
• App sensor 2 sig
• Battery pos volt
• Cooling fans system
• Ecm/ pcm fuse 10a
• Ecm/crnk fuse 1 15a
• Engine control module (ecm) (left side of engine compartment)
• Engine oil pressure (eop) switch (near oil filter)
• Evap canister vent
• Exterior lights system
• Fan relay ctrl
• Fuel pump rly ctrl
• Fuel tank pressure (ftp) sensor (on top of fuel tank)
• G112 (lower left rear of engine)
• Gnd
• Hot at all times
• Ign
• Ign relay
• Ignition 1 voltage
• Instrument panel cluster (ipc)
• J104 (in engine harness, approximately 13 cm (5 in) from breakout to x138)
• J105
• J203
• Logic
• Low reference
• Malfunction indicator lamp (mil)
• Mil control
• Oss hi sig
• Oss low sig
• Oxy snsr fuse 6 15a
• Pnk
• Pressure sns sig
• Primary fuel level
• Pwr/train relay
• Pwr/trn relay
• Rly ctrl
• Serial data acc wake up
• Starter rly coil
• Starting/ charging system
• Stop lamp sw sig
• Tan
• To fuse pwr emis dev fuse 7 (diagram 4 of 5)
• Underhood fuse block (on right front of engine compartment, forward of strut tower)
• Vehicle speed sensor (vss) (in transmission)

4.6L VIN 9, Engine Performance Wiring Diagram (2 of 5) for Buick Lucerne Super 2008

List of elements for 4.6L VIN 9, Engine Performance Wiring Diagram (2 of 5) for Buick Lucerne Super 2008:

• (below rear of vehicle, on evap canister) evaporative emission (evap) canister vent solenoid valve
• (near a/c compressor, on hose assembly)
• (top of fuel tank) fuel pump & sender assembly
• (under left rear seat)
• 5v ref 1
• 5v ref 2
• A/c refrigerant pressure sensor
• Acc
• Air pump relay ctrl
• Cooling fans system
• Ctrl bank 2 sns 1
• Ecm/tcm fuse 5 15a
• Engine control module (ecm) (left side of engine compartment)
• Evap canister purge
• F/pmp fuse 1 20a
• F10
• Field duty cycle sig
• Fuel pump relay
• G301
• G403 (right front wall of luggage compartment)
• Hot at all times
• Ignition switch
• J100
• J201
• J316 (in body harness, approximately 5 cm (2 in) from breakout for electronic suspension control module)
• Low reference
• Low speed cooling
• Off
• Park/neutral
• Pnk
• Rear fuse block (below left side of rear seat)
• Ref bank 2 sns 1
• Reverse lockout sol
• Run
• Serial data bus -
• Shift interlock system
• Sol can fuse 10a
• Start
• Starting/ charging system
• Tan
• Transmissions system
• Turn on signal
• Volt bank 2 sns 1

4.6L VIN 9, Engine Performance Wiring Diagram (3 of 5) for Buick Lucerne Super 2008

List of elements for 4.6L VIN 9, Engine Performance Wiring Diagram (3 of 5) for Buick Lucerne Super 2008:

• (lower left front of engine compartment) secondary air injection (air) pump
• (lower left rear of engine)
• (on top right rear of engine) evaporative emission (evap) canister purge solenoid valve
• (top center of rear camshaft cover) secondary air injection (air) check valve
• Air pump fuse 50a
• Air pump relay
• Air sol fuse 5 15a
• Air sol relay
• Computer data lines system
• Ect sensor sig
• Engine control module (ecm) (left side of engine compartment)
• Engine coolant temperature (ect) sensor (right rear of engine)
• G115
• Heated oxygen sensor (ho2s) bank 2 sensor 1 (in left exhaust manifold)
• Hot at all times
• Hot in run or start
• Ignition coil/module 2 (top left side of engine)
• J106
• Manifold absolute pressure (map) sensor (on top rear of engine)
• Map sensor sig
• Nca
• Oil pre sw signal
• Pnk
• Pre sns sig
• Refrig pre sen sig
• Serial data bus +
• Spark plug
• Tan
• Underhood fuse block (on right front of engine compartment, forward of strut tower)

4.6L VIN 9, Engine Performance Wiring Diagram (4 of 5) for Buick Lucerne Super 2008

List of elements for 4.6L VIN 9, Engine Performance Wiring Diagram (4 of 5) for Buick Lucerne Super 2008:

• (below exhaust gas recirculation (egr) valve)
• (in engine harness, approximately 3 cm (1 in) from branch for x139) j109
• (in engine harness, approximately 6 cm (2 in) from branch for engine coolant temperature (ect) sensor)
• (in engine harness, approximately 7 cm (4 in) from branch for x139 toward breakout for x138) j102
• (in even bank ignition coil harness, between x139 & ignition coil/ module 8) j131
• (in even bank ignition coil harness, between x139 & ignition coil/module 8)
• (in even bank ignition coil harness, pnk between x139 & ignition coil/ module 2) j133
• (in odd bank ignition coil harness, between x140 & ignition coil/module 7) j142
• (on top right rear of engine) exhaust gas recirculation (egr) valve
• Emis dev fuse 7 15a
• From ecm/crnk fuse 1 (diagram 1 of 5)
• Fuel inj even fuse 3 15a
• Fuel inj odd fuse 2 15a x3
• Fuel injectors (top left side of engine)
• Fuel injectors (top right side of engine)
• G100
• Ignition coil/module (top left side of engine)
• Ignition coil/module (top right side of engine)
• J110
• J135
• J144
• J146 (in odd bank ignition coil harness, between x140 & ignition coil/module 7)
• Nca
• Plug spark
• Pnk
• Pnk/tan
• Red
• Spark plug
• Tan
• Underhood fuse block (on right front of engine compartment, forward of strut tower)

4.6L VIN 9, Engine Performance Wiring Diagram (5 of 5) for Buick Lucerne Super 2008

List of elements for 4.6L VIN 9, Engine Performance Wiring Diagram (5 of 5) for Buick Lucerne Super 2008:

• (left side of engine compartment, in air intake tube)
• 5v ref 1
• 5v ref 2
• Camshaft position (cmp) sensor (on right front of engine)
• Ckp sensor sig
• Cmp sensor sig
• Crankshaft position (ckp) sensor (top center of engine)
• Egr sol high ctrl
• Egr sol low ctrl
• Egr valve pos sig
• Engine control module (ecm) (left side of engine compartment)
• Fuel injector 1
• Fuel injector 2
• Fuel injector 3
• Fuel injector 4
• Fuel injector 5
• Fuel injector 6
• Fuel injector 7
• Fuel injector 8
• G112 (lower left rear of engine)
• Heated oxygen sensor (ho2s) 2 (in exhaust, after catalytic converter)
• Heated oxygen sensor (ho2s) bank 1 sensor 1 (on right exhaust manifold)
• Heater low ctrl
• Ho2s 2 high sig
• Ho2s 2 low sig
• Iat sensor sig
• Ic 1 control
• Ic 2 ctrl
• Ic 3 control
• Ic 4 control
• Ic 5 ctrl
• Ic 6 ctrl
• Ic 7 ctrl
• Ic 8 control
• Ignition 1 voltage
• J105
• Knock sensor (ks) 1 (top right side of engine)
• Knock sensor (ks) 2 (top left side of engine)
• Knock sns 1 sig
• Knock sns 2 sig
• Low ref
• Low reference
• Maf sensor sig
• Mass air flow (maf)/ intake air temperature (iat) sensor
• Nca
• Pnk
• Pnk/red
• Pnk/tan
• Ref bank 1 sen 1
• Signal ground
• Tac motor ctrl 1
• Tac motor ctrl 2
• Tan
• Tan/pnk
• Throttle body assembly
• Tp sensor 1 sig
• Tp sensor 2 sig
• Volt bank 1 sns 1

4.6L VIN Y

4.6L VIN Y, Engine Performance Wiring Diagram (1 of 5) for Buick Lucerne Super 2008

List of elements for 4.6L VIN Y, Engine Performance Wiring Diagram (1 of 5) for Buick Lucerne Super 2008:

• (left rear of engine compartment) transmission control module (tcm)
• (lower left rear of engine) g112
• (right of glove box) body control module (bcm)
• (under driver's seat) g300
• 5v ref 1
• 5v ref 2
• A/c com clutch rly
• Accelerator pedal position (app) sensor (top of accelerator pedal assembly) pedal assembly)
• Accessory wake up
• Air conditioning system
• App sensor 1 sig
• App sensor 2 sig
• Battery pos volt
• Cooling fans system
• Ecm/ pcm fuse 10a
• Ecm/crnk fuse 1 15a
• Engine control module (ecm) (left side of engine compartment)
• Engine oil pressure (eop) switch (near oil filter)
• Evap canister vent
• Exterior lights system
• Fan relay ctrl
• Fuel pump rly ctrl
• Fuel tank pressure (ftp) sensor (on top of fuel tank)
• G112 (lower left rear of engine)
• Gnd
• Hot at all times
• Ign
• Ign relay
• Ignition 1 voltage
• Instrument panel cluster (ipc)
• J104 (in engine harness, approximately 13 cm (5 in) from breakout to x138)
• J105
• J203
• Logic
• Low reference
• Malfunction indicator lamp (mil)
• Mil control
• Oss hi sig
• Oss low sig
• Oxy snsr fuse 6 15a
• Pnk
• Pressure sns sig
• Primary fuel level
• Pwr/train relay
• Pwr/trn relay
• Rly ctrl
• Serial data acc wake up
• Starter rly coil
• Starting/ charging system
• Stop lamp sw sig
• Tan
• To fuse pwr emis dev fuse 7 (diagram 4 of 5)
• Underhood fuse block (on right front of engine compartment, forward of strut tower)
• Vehicle speed sensor (vss) (in transmission)

4.6L VIN Y, Engine Performance Wiring Diagram (2 of 5) for Buick Lucerne Super 2008

List of elements for 4.6L VIN Y, Engine Performance Wiring Diagram (2 of 5) for Buick Lucerne Super 2008:

• (below rear of vehicle, on evap canister) evaporative emission (evap) canister vent solenoid valve
• (near a/c compressor, on hose assembly)
• (top of fuel tank) fuel pump & sender assembly
• (under left rear seat)
• 5v ref 1
• 5v ref 2
• A/c refrigerant pressure sensor
• Acc
• Air pump relay ctrl
• Cooling fans system
• Ctrl bank 2 sns 1
• Ecm/tcm fuse 5 15a
• Engine control module (ecm) (left side of engine compartment)
• Evap canister purge
• F/pmp fuse 1 20a
• F10
• Field duty cycle sig
• Fuel pump relay
• G301
• G403 (right front wall of luggage compartment)
• Hot at all times
• Ignition switch
• J100
• J201
• J316 (in body harness, approximately 5 cm (2 in) from breakout for electronic suspension control module)
• Low reference
• Low speed cooling
• Off
• Park/neutral
• Pnk
• Rear fuse block (below left side of rear seat)
• Ref bank 2 sns 1
• Reverse lockout sol
• Run
• Serial data bus -
• Shift interlock system
• Sol can fuse 10a
• Start
• Starting/ charging system
• Tan
• Transmissions system
• Turn on signal
• Volt bank 2 sns 1

4.6L VIN Y, Engine Performance Wiring Diagram (3 of 5) for Buick Lucerne Super 2008

List of elements for 4.6L VIN Y, Engine Performance Wiring Diagram (3 of 5) for Buick Lucerne Super 2008:

• (lower left front of engine compartment) secondary air injection (air) pump
• (lower left rear of engine)
• (on top right rear of engine) evaporative emission (evap) canister purge solenoid valve
• (top center of rear camshaft cover) secondary air injection (air) check valve
• Air pump fuse 50a
• Air pump relay
• Air sol fuse 5 15a
• Air sol relay
• Computer data lines system
• Ect sensor sig
• Engine control module (ecm) (left side of engine compartment)
• Engine coolant temperature (ect) sensor (right rear of engine)
• G115
• Heated oxygen sensor (ho2s) bank 2 sensor 1 (in left exhaust manifold)
• Hot at all times
• Hot in run or start
• Ignition coil/module 2 (top left side of engine)
• J106
• Manifold absolute pressure (map) sensor (on top rear of engine)
• Map sensor sig
• Nca
• Oil pre sw signal
• Pnk
• Pre sns sig
• Refrig pre sen sig
• Serial data bus +
• Spark plug
• Tan
• Underhood fuse block (on right front of engine compartment, forward of strut tower)

4.6L VIN Y, Engine Performance Wiring Diagram (4 of 5) for Buick Lucerne Super 2008

List of elements for 4.6L VIN Y, Engine Performance Wiring Diagram (4 of 5) for Buick Lucerne Super 2008:

• (below exhaust gas recirculation (egr) valve)
• (in engine harness, approximately 3 cm (1 in) from branch for x139) j109
• (in engine harness, approximately 6 cm (2 in) from branch for engine coolant temperature (ect) sensor)
• (in engine harness, approximately 7 cm (4 in) from branch for x139 toward breakout for x138) j102
• (in even bank ignition coil harness, between x139 & ignition coil/ module 8) j131
• (in even bank ignition coil harness, between x139 & ignition coil/module 8)
• (in even bank ignition coil harness, pnk between x139 & ignition coil/ module 2) j133
• (in odd bank ignition coil harness, between x140 & ignition coil/module 7) j142
• (on top right rear of engine) exhaust gas recirculation (egr) valve
• Emis dev fuse 7 15a
• From ecm/crnk fuse 1 (diagram 1 of 5)
• Fuel inj even fuse 3 15a
• Fuel inj odd fuse 2 15a x3
• Fuel injectors (top left side of engine)
• Fuel injectors (top right side of engine)
• G100
• Ignition coil/module (top left side of engine)
• Ignition coil/module (top right side of engine)
• J110
• J135
• J144
• J146 (in odd bank ignition coil harness, between x140 & ignition coil/module 7)
• Nca
• Plug spark
• Pnk
• Pnk/tan
• Red
• Spark plug
• Tan
• Underhood fuse block (on right front of engine compartment, forward of strut tower)

4.6L VIN Y, Engine Performance Wiring Diagram (5 of 5) for Buick Lucerne Super 2008

List of elements for 4.6L VIN Y, Engine Performance Wiring Diagram (5 of 5) for Buick Lucerne Super 2008:

• (left side of engine compartment, in air intake tube)
• 5v ref 1
• 5v ref 2
• Camshaft position (cmp) sensor (on right front of engine)
• Ckp sensor sig
• Cmp sensor sig
• Crankshaft position (ckp) sensor (top center of engine)
• Egr sol high ctrl
• Egr sol low ctrl
• Egr valve pos sig
• Engine control module (ecm) (left side of engine compartment)
• Fuel injector 1
• Fuel injector 2
• Fuel injector 3
• Fuel injector 4
• Fuel injector 5
• Fuel injector 6
• Fuel injector 7
• Fuel injector 8
• G112 (lower left rear of engine)
• Heated oxygen sensor (ho2s) 2 (in exhaust, after catalytic converter)
• Heated oxygen sensor (ho2s) bank 1 sensor 1 (on right exhaust manifold)
• Heater low ctrl
• Ho2s 2 high sig
• Ho2s 2 low sig
• Iat sensor sig
• Ic 1 control
• Ic 2 ctrl
• Ic 3 control
• Ic 4 control
• Ic 5 ctrl
• Ic 6 ctrl
• Ic 7 ctrl
• Ic 8 control
• Ignition 1 voltage
• J105
• Knock sensor (ks) 1 (top right side of engine)
• Knock sensor (ks) 2 (top left side of engine)
• Knock sns 1 sig
• Knock sns 2 sig
• Low ref
• Low reference
• Maf sensor sig
• Mass air flow (maf)/ intake air temperature (iat) sensor
• Nca
• Pnk
• Pnk/red
• Pnk/tan
• Ref bank 1 sen 1
• Signal ground
• Tac motor ctrl 1
• Tac motor ctrl 2
• Tan
• Tan/pnk
• Throttle body assembly
• Tp sensor 1 sig
• Tp sensor 2 sig
• Volt bank 1 sns 1