ENGINE PERFORMANCE – Audi S8 2014 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

4.0L TURBO

4.0L Turbo, Engine Performance Wiring Diagram (1 of 11) for Audi S8 2014

List of elements for 4.0L Turbo, Engine Performance Wiring Diagram (1 of 11) for Audi S8 2014:

• (behind right kick panel) g43
• (top of brake pedal assembly) brake lamp switch
• 14a
• Comfort system central control module (right forward wall of luggage compt)
• Cooling fans system
• Cruise control system
• Engine control module (ecm) (center rear of engine compt)
• Fuse 35a
• Fuse 5a
• Fuse carrier
• Fuse panel b (right end of dash)
• G602 (left front foot well)
• Heated oxygen sensor (left rear of engine compt)
• Heated oxygen sensor 2 (upstream of right bank catalytic converter)
• Heater for oxygen sensor 1 after catalytic converter & oxygen sensor after three way catalytic converter
• Hot at all times
• Nca
• Red
• Relay/ fuse panel f (right forward wall of luggage compt)
• Starting/ charging system
• T14b
• T17f
• T17g
• T17k
• T32c
• T91
• Transmission control module (tcm) (in bottom of transmission)
• Transmission fluid cooling valve (in lower left front of engine compt)

4.0L Turbo, Engine Performance Wiring Diagram (2 of 11) for Audi S8 2014

List of elements for 4.0L Turbo, Engine Performance Wiring Diagram (2 of 11) for Audi S8 2014:

• (behind right kick panel) g43
• (on engine compt relay carrier) secondary air injection pump relay
• (right front of engine compt) secondary air injection pump motor
• 50a
• Computer data lines system
• Digital sound system control module (left forward wall of luggage compt)
• Fuse 7.5a
• Fuse carrier
• G639 (on left kick panel)
• Hot at all times
• Power distribution system
• Red
• Relay/ fuse panel f (right forward wall of luggage compt)
• Secondary air injection pump fuse
• Subframe mount actuator 1 (right front of engine compt)
• Subframe mount actuator 2 (left front of engine compt)
• Subframe mount control module (behind left wheel liner)
• Subframe mount sensor 1 (right side of engine compt)
• Subframe mount sensor 2 (left side of engine compt)
• T10ax
• T17h
• T18d

4.0L Turbo, Engine Performance Wiring Diagram (3 of 11) for Audi S8 2014

List of elements for 4.0L Turbo, Engine Performance Wiring Diagram (3 of 11) for Audi S8 2014:

• 10a
• 11a
• 12a
• Brake booster pressure sensor (w/ start/ stop system) (inside plenum chamber, front of brake booster)
• Charge air cooler temperature sensor 1 (under throttle valve)
• Charge air cooler temperature sensor 2 (under throttle valve)
• Cooling fan control module
• Cooling fan control module 2
• Fuel pump (fp) relay (in relay & fuse carrier, right side of luggage compt)
• Fuel pump control module (lower left of fuel tank)
• Fuse 10a
• Fuse 15a
• Fuse 30a
• Fuse 5a
• Fuse panel a (right side of engine compt)
• G62 (right lower "c" pillar)
• G675 (right side of luggage compt)
• Manifold absolute pressure sensor (under charge air cooler housing)
• Nca
• Red
• T14b
• T14p
• T17f
• T2t
• T2u
• T3x
• T8at
• Transfer fuel pump

4.0L Turbo, Engine Performance Wiring Diagram (4 of 11) for Audi S8 2014

List of elements for 4.0L Turbo, Engine Performance Wiring Diagram (4 of 11) for Audi S8 2014:

• (left front foot well) g602
• (top of fuel tank) fuel level sensor
• Camshaft adjustment valve 1
• Camshaft adjustment valve 2
• Cluster system
• Computer data lines system
• Display unit
• Engine coolant level sensor
• Engine electronics indicator lamp
• Exhaust camshaft adjustment valve 1 (rear of cylinder bank 1)
• Exhaust camshaft adjustment valve 2 (rear of cylinder bank 2)
• Exhaust door valve 1
• Exhaust door valve 2
• Fuel gauge
• Fuse 5a
• Fuse carrier 6
• G34 (under driver's seat)
• Hot at all times
• Instrument cluster control module
• Relay/ fuse panel f (right forward wall of luggage compt)
• Structure borne sound actuator
• Structure borne sound control module (if equipped) (below left front seat)
• T14p
• T16c
• T17h
• T17i
• T32
• T32b
• T4hm
• Vehicle electrical system control module (behind left side of dash)
• Wastegate bypass regulator valve (left front of engine)

4.0L Turbo, Engine Performance Wiring Diagram (5 of 11) for Audi S8 2014

List of elements for 4.0L Turbo, Engine Performance Wiring Diagram (5 of 11) for Audi S8 2014:

• (middle front of left side of engine) secondary air injection solenoid valve 2
• (not used)
• (right center of front of engine) engine coolant temperature sensor
• (right side of front of engine) oil temperature sensor 2
• (top right of engine) cylinder 1 exhaust camshaft adjuster 2
• (top right of engine) cylinder 2 exhaust camshaft adjuster 3
• (top right of engine) cylinder 2 intake camshaft adjuster 2
• Cylinder 1 exhaust camshaft adjuster 3 (top right of engine)
• Cylinder 1 intake camshaft adjuster 2 (top right of engine)
• Cylinder 1 intake camshaft adjuster 3 (top right of engine)
• Cylinder 2 exhaust camshaft adjuster 2 (top right of engine)
• Cylinder 2 intake camshaft adjuster 3 (top right of engine)
• T17g

4.0L Turbo, Engine Performance Wiring Diagram (6 of 11) for Audi S8 2014

List of elements for 4.0L Turbo, Engine Performance Wiring Diagram (6 of 11) for Audi S8 2014:

• (front of engine, on throttle) throttle valve control module
• (fuel injector cylinder 1, 2, 3 & 4: top of right cylinder bank) (fuel injector cylinder 5, 6, 7 & 8: top of left cylinder bank) fuel injector cylinders
• (left front of engine compt) engine coolant temperature sensor on radiator outlet
• (rear of right side of engine) intake manifold runner position sensor
• Engine control module (ecm) (center rear of engine compt)
• Oil pressure switch (right side of engine)
• Reduced oil pressure switch (lower center of right side of engine)
• T105

4.0L Turbo, Engine Performance Wiring Diagram (7 of 11) for Audi S8 2014

List of elements for 4.0L Turbo, Engine Performance Wiring Diagram (7 of 11) for Audi S8 2014:

• (front of cylinder bank 2) intake manifold runner position sensor 2
• (front of cylinder bank 2) low fuel pressure sensor
• (left front of engine) charge air pressure sensor 2
• (left side of engine) fuel pressure sensor 2
• (right front of engine) secondary air injection sensor 1
• (right rear of top of engine, under cover) engine cover temperature sensor
• (right side of engine) fuel pressure sensor
• (upper left of front of engine) engine temperature control sensor
• (upper right front of engine) charge air pressure sensor
• Camshaft position sensor (side of right cylinder head)
• Camshaft position sensor 2 (center of left cylinder head)
• Camshaft position sensor 4 (top rear of left cylinder head)
• Intake air temperature (iat) sensor (rear middle of left side of engine)
• Knock sensor 1 (right side of engine)
• Knock sensor 2 (right side of engine)
• Knock sensor 3 (left side of engine)
• Knock sensor 4 (left side of engine)
• Nca
• Red

4.0L Turbo, Engine Performance Wiring Diagram (8 of 11) for Audi S8 2014

List of elements for 4.0L Turbo, Engine Performance Wiring Diagram (8 of 11) for Audi S8 2014:

• Engine control module (ecm) (center rear of engine compt)
• Fuel metering valve (front of cylinder bank 1)
• Fuel metering valve 2 (top of cylinder bank 2)
• Red
• T105

4.0L Turbo, Engine Performance Wiring Diagram (9 of 11) for Audi S8 2014

List of elements for 4.0L Turbo, Engine Performance Wiring Diagram (9 of 11) for Audi S8 2014:

• (left front of engine compt) after-run coolant pump
• (left rear of engine) engine coolant circulation pump 2
• (left side of transmission) transmission mount valve 2
• (lower front of left side of engine) oil pressure regulator valve
• (right side of transmission) transmission mount valve 1
• (top left of engine)
• (under left headlamp) (if equipped) transmission coolant valve
• (under left headlamp) charge air cooling pump
• Cylinder 1 exhaust camshaft adjuster 5
• Cylinder 1 exhaust camshaft adjuster 8
• Cylinder 1 intake camshaft adjuster 5
• Cylinder 1 intake camshaft adjuster 8
• Cylinder 2 exhaust camshaft adjuster 5
• Cylinder 2 exhaust camshaft adjuster 8
• Cylinder 2 intake camshaft adjuster 5
• Cylinder 2 intake camshaft adjuster 8
• G43 (behind right kick panel)
• G639 (on left kick panel)
• T14b

4.0L Turbo, Engine Performance Wiring Diagram (10 of 11) for Audi S8 2014

List of elements for 4.0L Turbo, Engine Performance Wiring Diagram (10 of 11) for Audi S8 2014:

• (center of left side of engine) secondary air injection solenoid valve
• (left center of front of engine) cylinder head coolant valve
• (left side of the front of the engine) bank 2 turbocharger recirculation valve
• (lower front of left side of engine) map controlled engine cooling thermostat
• (rear right side of engine) intake manifold runner control valve
• (right front of engine) turbocharger recirculation valve
• (right rear of engine) evap canister purge regulator valve 1
• (top center of engine on inner v-cover) piston cooling nozzle control valve
• G43 (behind right kick panel)
• G600 (on right cylinder head)
• G601 (on left cylinder head)
• Ignition coils 1, 2, 3 & 4 w/ power output stage (top of cylinder bank 1)
• Ignition coils 5, 6, 7 & 8 w/ power output stage (top of cylinder bank 2)
• Nca
• T8at
• To spark plug

4.0L Turbo, Engine Performance Wiring Diagram (11 of 11) for Audi S8 2014

List of elements for 4.0L Turbo, Engine Performance Wiring Diagram (11 of 11) for Audi S8 2014:

• (bottom of engine oil pan) oil level thermal sensor
• 11a
• 15a
• Accelerator pedal position sensor & accelerator pedal position sensor 2 (at accelerator pedal)
• Camshaft position sensor 3 (top rear of right cylinder head)
• Computer data lines system
• Engine control module (ecm) (center rear of engine compt)
• Engine speed sensor (lower rear of engine)
• Fuel tank leak detection control module (under right rear wheel housing liner)
• Fuel tank pressure sensor (behind right rear wheelwell liner)
• Fuse 15a
• Fuse 25a
• Fuse 5a
• Fuse carrier
• G43 (behind right kick panel)
• Heater for oxygen sensor 2 after catalytic converter & oxygen sensor after catalytic converter
• Hot at all times
• Nca
• Oil pressure switch (level 3) (center rear of top of engine)
• Relay/ fuse panel f (right forward wall of luggage compt)
• Starting/charging system
• T105
• T17f
• T17g
• T17k
• T8at
• T91