ENGINE PERFORMANCE – Audi A8 L Quattro 2008 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

4.2L

4.2L, Engine Performance Wiring Diagram (1 of 5) for Audi A8 L Quattro 2008

List of elements for 4.2L, Engine Performance Wiring Diagram (1 of 5) for Audi A8 L Quattro 2008:

• (rear of cylinder bank 2) camshaft position sensor 4
• (top of cylinder bank 2) camshaft position sensor 2
• (top of cylinder bank 2) low fuel pressure sensor
• Anti-lock brakes system
• Anti-theft system starting/ charging system
• Brake booster pressure sensor
• Brake pedal switch & brake light switch
• Comfort system central control module (right side of luggage compt)
• Cooling fans system
• Cruise control system
• Engine control module (ecm) (in passenger's side plenum chamber e-box)
• Fuse 5a
• G43 (behind right kick panel)
• G44 (behind left kick panel)
• Heated oxygen sensor (downstream of right 3-way catalytic converter)
• Heated oxygen sensor (upstream of right 3-way catalytic converter)
• Heated oxygen sensor 2 (downstream of left 3-way catalytic converter)
• Heated oxygen sensor 2 (upstream of left 3-way catalytic converter)
• Kick down switch (under accelerator pedal)
• Mass air flow (maf) sensor & intake air temperature sensor
• Nca
• Partial
• Right instrument panel fuse holder (in right end of dash)
• Starting/ charging system
• T10q
• T94
• Transmissions system

4.2L, Engine Performance Wiring Diagram (2 of 5) for Audi A8 L Quattro 2008

List of elements for 4.2L, Engine Performance Wiring Diagram (2 of 5) for Audi A8 L Quattro 2008:

• (rear of cylinder bank 1) camshaft adjustment valve 1
• (rear of cylinder bank 1) camshaft adjustment valve 1 (exhaust)
• (rear of cylinder bank 2) camshaft adjustment valve 2
• (rear of cylinder bank 2) camshaft adjustment valve 2 (exhaust)
• (top of cylinder bank 1) camshaft position sensor
• 22a
• Anti-lock brakes system
• Fuel pump
• Fuel pump control module
• Fuel pump relay (on right kick panel relay & fuse panel)
• Fuse 40a
• Fuse 5a
• G51 (right rear of luggage compt)
• G675 (right side of luggage compt)
• Hot at all times
• Intake manifold runner control valve
• Intake manifold runner control valve 2
• Left instrument panel fuse holder (in left end of dash)
• Map controlled engine cooling thermostat
• Right luggage compartment fuse panel (right side of luggage compt)
• Throttle position & accelerator pedal position sender 2 (on accelerator pedal)
• Transfer fuel pump

4.2L, Engine Performance Wiring Diagram (3 of 5) for Audi A8 L Quattro 2008

List of elements for 4.2L, Engine Performance Wiring Diagram (3 of 5) for Audi A8 L Quattro 2008:

• (front of cylinder bank 1) intake manifold runner position sensor
• (front of cylinder bank 2) intake manifold runner position sensor 2
• (rear of cylinder bank 1) engine coolant temperature (ect) sensor
• (right side of cylinder bank 1) camshaft position sensor 3
• Engine control module (ecm) (in passenger's side plenum chamber e-box)
• Fuse 10a
• Fuse 15a
• Fuse 30a
• Fuse 40a
• Fuse 5a
• Knock sensor 1 (inner side of cylinder bank 1)
• Knock sensor 2 (inner side of cylinder bank 1)
• Knock sensor 3 (inner side of cylinder bank 2)
• Knock sensor 4 (inner side of cylinder bank 2)
• Nca
• Red
• Right instrument panel fuse holder (in right end of dash)
• T60
• Top front of engine fuel pressure sensor

4.2L, Engine Performance Wiring Diagram (4 of 5) for Audi A8 L Quattro 2008

List of elements for 4.2L, Engine Performance Wiring Diagram (4 of 5) for Audi A8 L Quattro 2008:

• (in left rear wheel well) leak detection pump (ldp)
• (left side of engine compt) left electro- hydraulic engine mount solenoid valve
• (right front of engine compt) intake air switch- over valve
• (right front of engine) right electro- hydraulic engine mount solenoid valve
• (top of cylinder bank 1) fuel metering valve
• (top of cylinder bank 2) fuel metering valve 2
• 1a red
• 3a red
• Coil 1
• Coil 2
• Coil 3
• Coil 4
• Coil 5
• Coil 6
• Coil 7
• Coil 8
• Evaporative emission canister purge regulator valve
• Fuse 150a
• Fuse 50a
• G15
• G17
• G43 (behind right kick panel)
• Hot at all times
• Ignition coils (1, 2, 3, 4: top of cylinder bank 1) (5, 6, 7, 8: top of cylinder bank 2)
• Nca
• Plenum chamber e-box relay panel
• Red
• Right luggage compartment fuse holder (right side of luggage compt)
• Secondary air injection (air) pump relay
• To spark plug

4.2L, Engine Performance Wiring Diagram (5 of 5) for Audi A8 L Quattro 2008

List of elements for 4.2L, Engine Performance Wiring Diagram (5 of 5) for Audi A8 L Quattro 2008:

• Brake booster relay
• Brake system vacuum pump
• Computer data lines system
• Cooling fans system
• Engine control module (ecm) (in passenger's side plenum chamber e-box)
• Engine speed (rpm) sensor (left rear of engine)
• Evaporative emission canister purge solenoid valve 2 (left rear of engine)
• Fuel injectors
• G43 (behind right kick panel)
• G44 (behind left kick panel)
• Plenum chamber e-box relay panel
• Red
• Right luggage compartment fuse holder (right side of luggage compt)
• Secondary air injection (air) pump motor (between right front bumper & wheelwell liner)
• Starting/ charging system
• T60
• T94
• Throttle valve control module (behind intake manifold, on throttle valve housing)

6.0L

6.0L, Engine Performance Wiring Diagram (1 of 7) for Audi A8 L Quattro 2008

List of elements for 6.0L, Engine Performance Wiring Diagram (1 of 7) for Audi A8 L Quattro 2008:

• (on accelerator pedal)
• (under left side of dash) data link connector
• 22a
• 3a red
• A17
• Access/start control module (under driver's seat)
• Anti-lock brakes system
• App sensor 2
• Brake light switch & brake pedal switch
• Computer data lines system
• Cooling fans system
• Cruise control system
• Engine control module (ecm) (in passenger's side plenum chamber e-box)
• Evaporative emission canister purge solenoid valve
• Fuse 150a
• Fuse 30a
• Fuse 5a
• G43 (behind right kick panel)
• G44 (behind left kick panel)
• Hot at all times
• Left instrument panel fuse holder (in left end of dash)
• Mass air flow sensor & intake air temperature sensor
• Plenum chamber e-box relay panel
• Red
• Right instrument panel fuse holder (in right end of dash)
• Right luggage compartment fuse holder (right side of luggage compt)
• Secondary air injection (air) pump fuse 50a
• Secondary air injection (air) pump motor (in lower part of air filter housing)
• Secondary air injection (air) pump relay
• Starting/ charging system
• T81
• Throttle position sensor & accelerator pedal position sender 2
• Tp sensor
• Transmission controls system
• Transmissions system

6.0L, Engine Performance Wiring Diagram (2 of 7) for Audi A8 L Quattro 2008

List of elements for 6.0L, Engine Performance Wiring Diagram (2 of 7) for Audi A8 L Quattro 2008:

• (in left rear wheel well) leak detection pump (ldp)
• (left rear of engine) evaporative emission canister purge regulator valve 2
• (left side of engine compt) left electro- hydraulic engine mount solenoid valve
• (right front of engine) right electro- hydraulic engine mount solenoid valve
• Evaporative emission canister purge regulator valve
• Exhaust flap valve 1
• Exhaust flap valve 2
• Fuse 10a
• Heated oxygen sensor (ho2s) (upstream of exhaust bank 1 catalytic converter)
• Heated oxygen sensor (ho2s) 2 (upstream of exhaust bank 2 catalytic converter)
• Heated oxygen sensor (ho2s) 3 (upstream of exhaust bank 3 catalytic converter)
• Heated oxygen sensor (ho2s) 4 (upstream of exhaust bank 4 catalytic converter)
• Heated oxygen sensor (o2s) 1 (downstream of exhaust bank 1 catalytic converter)
• Heated oxygen sensor (o2s) 2 (downstream of exhaust bank 2 catalytic converter)
• Heated oxygen sensor (o2s) 4 (downstream of exhaust bank 4 catalytic converter)
• Nca
• Red
• Right instrument panel fuse holder (in right end of dash)

6.0L, Engine Performance Wiring Diagram (3 of 7) for Audi A8 L Quattro 2008

List of elements for 6.0L, Engine Performance Wiring Diagram (3 of 7) for Audi A8 L Quattro 2008:

• Camshaft position (cmp) sensor 3 (rear of cylinder bank 1)
• Camshaft position sensor (cmp) (rear of cylinder bank 2)
• Computer data lines system
• Engine control module (ecm) (in passenger's side plenum t81a chamber e-box)
• Engine coolant temperature sensor
• Engine speed sensor (left rear of engine)
• G43 (behind right kick panel)
• Heated oxygen sensor (o2s) 3 (downstream of exhaust bank 3 catalytic converter)
• Knock sensor 1 (right front of engine crankcase)
• Knock sensor 2 (right side of engine crankcase)
• Mass air flow sensor 2 & intake air temperature sensor 2 (right front of engine compt)
• Nca
• Red

6.0L, Engine Performance Wiring Diagram (4 of 7) for Audi A8 L Quattro 2008

List of elements for 6.0L, Engine Performance Wiring Diagram (4 of 7) for Audi A8 L Quattro 2008:

• (center rear of engine) map controlled engine cooling thermostat
• (rear of cylinder bank 1) camshaft adjustment valve 1 (exhaust)
• (rear of cylinder bank 2) camshaft adjustment valve 2
• (rear of cylinder bank 2) camshaft adjustment valve 2 (exhaust)
• 28a
• 29a
• 31a
• Camshaft adjustment valve 1
• Fuel injectors (top of cylinder bank 1)
• Fuel pump (fp) relay (on right kick panel relay & fuse panel)
• Fuse 15a
• Fuse 20a
• Fuse 5a
• G43 (behind right kick panel)
• G600
• Ignition coil 1
• Ignition coil 2
• Ignition coil 3
• Ignition coil 4
• Ignition coil 5
• Ignition coil 6
• Nca
• Plug spark
• Red
• Right instrument panel fuse holder (in right end of dash)
• Spark plug
• Torque support valve

6.0L, Engine Performance Wiring Diagram (5 of 7) for Audi A8 L Quattro 2008

List of elements for 6.0L, Engine Performance Wiring Diagram (5 of 7) for Audi A8 L Quattro 2008:

• (on cylinder bank no. 2 throttle body) throttle valve control module 2
• 50a
• G43 (behind right kick panel)
• G44 (behind left kick panel)
• G600
• Ignition coils
• Nca
• Plenum chamber e-box relay panel
• Plug spark
• Red
• Secondary air injection (air) pump relay 2
• Secondary air injection pump fuse 2
• Secondary air injection pump motor 2 (in lower part of air)
• Spark plug

6.0L, Engine Performance Wiring Diagram (6 of 7) for Audi A8 L Quattro 2008

List of elements for 6.0L, Engine Performance Wiring Diagram (6 of 7) for Audi A8 L Quattro 2008:

• (left side of engine crankcase)
• (on cylinder bank 1 throttle body) throttle valve control module
• (rear of cylinder bank 1) camshaft position sensor (cmp) 2
• (rear of cylinder bank 2) camshaft position sensor (cmp) 4
• Engine control module (ecm) (in passenger's side plenum chamber e-box)
• Instrument cluster control module
• Instrument cluster display unit
• Knock sensor 3
• Knock sensor 4
• Nca
• Red
• T32
• T40a
• T81a

6.0L, Engine Performance Wiring Diagram (7 of 7) for Audi A8 L Quattro 2008

List of elements for 6.0L, Engine Performance Wiring Diagram (7 of 7) for Audi A8 L Quattro 2008:

• Compartment relay & fuse holder (right side of luggage compt)
• Cooling fans system
• Engine control module (ecm) (in passenger's side plenum chamber e-box)
• Fuel injectors (top of cylinder bank 1)
• Fuel injectors (top of cylinder bank 2)
• Fuel level sender
• Fuel level sensor 2
• Fuel level sensor 3
• Fuel pump 2 relay
• Fuse 20a
• G44 (behind left kick panel)
• G675 (right side of luggage compt)
• Hot at all times
• Kick down switch (under accelerator pedal)
• Red
• Right luggage compartment fuse panel (right side of luggage compt)
• Starting/ charging system
• T40
• T81
• Transfer fuel pump, fuel level sender & fuel level sensor 3