ENGINE PERFORMANCE – Audi S4 Quattro 2000 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

2.7L TURBO

2.7L Turbo, Engine Performance Wiring Diagram (1 of 3) for Audi S4 Quattro 2000

List of elements for 2.7L Turbo, Engine Performance Wiring Diagram (1 of 3) for Audi S4 Quattro 2000:

• (left side of eng compt) g104
• (m/t)
• (pins 21-24 not used)
• (pins 7,8,14-18 not used)
• 3-way relay carrier
• A/c & instrument cluster systems
• A/c system
• Brake- light switch (above brake pedal, on bracket)
• Clutch vacuum vent valve switch (above clutch pedal, on bracket)
• Cruise control system
• Fuse 10a
• Fuse 20a
• Fuse 50a
• Fuse panel
• G104 (left side of engine compt)
• Heated oxygen sensor 1 (downstream of respective twc)
• Heated oxygen sensor 1 (on exhaust manifold, behind right cylinder head)
• Heated oxygen sensor 2 (downstream of respective twc)
• Heated oxygen sensor 2 (on exhaust mani- fold, behind left cylinder head)
• Hot at all times
• Hot at all times ignition switch
• Instrument cluster system
• Mass airflow (maf) sensor (attached to air cleaner housing)
• Motronic engine control module (near brake booster, in protective case)
• Nca
• Off
• Run
• Secondary air injection (air) pump relay
• Secondary air injection pump motor (in lower right front corner of eng compt)
• Start
• Throttle position (tp) sensor (above accelerator pedal, on bracket)

2.7L Turbo, Engine Performance Wiring Diagram (2 of 3) for Audi S4 Quattro 2000

List of elements for 2.7L Turbo, Engine Performance Wiring Diagram (2 of 3) for Audi S4 Quattro 2000:

• (front of right cylinder head) camshaft position (cmp) sensor 2
• (in outlet side of left turbo- charger housing) exhaust temperature sensor 2
• (in outlet side of right turbo- charger housing) exhaust temperature sensor 1
• (on center of intake manifold) charge air pressure sensor
• (rear left cylinder head) camshaft position (cmp) sensor 1
• (under left side of dash) data link connector
• Engine coolant temperature (ect) sensor (at rear of right cylinder head, on coolant pipe)
• Engine speed (rpm) sensor (left side of transmission bellhousing)
• Evaporative emission (evap) canister purge regulator valve (on upper right side of eng, near intake duct)
• Fault ind
• Idle air control cut-off valve
• Instrument cluster
• Instrument cluster combination processor
• Intake manifold change-over valve (at rear of intake manifold)
• Knock sensor (ks) 1 (on right side of eng block, under intake manifold)
• Knock sensor (ks) 2 (on left side of eng block, under intake manifold)
• Leak detection pump (ldp) (in right rear wheelhousing)
• Malfunction indicator lamp (mil)
• Nca
• Pwr accel activation
• Secondary air injection (air) solenoid valve (rear of intake manifold)
• T32/1
• T32/11
• T32/13
• T32/16
• T32/25
• T32/3
• T32/6
• T32a/28
• Wastegate bypass regu- lator valve (near intake air duct)

2.7L Turbo, Engine Performance Wiring Diagram (3 of 3) for Audi S4 Quattro 2000

List of elements for 2.7L Turbo, Engine Performance Wiring Diagram (3 of 3) for Audi S4 Quattro 2000:

• (left side of eng compt)
• 87f
• 87a
• Anti-lock brakes system
• Battery
• Camshaft adjustment valve 1 (on rear of right cylinder head)
• Camshaft adjustment valve 2 (on front of left cylinder head)
• Cruise control system
• Dti
• Emergency flasher switch & air bag control module
• Fuel injectors
• Fuel pump (in fuel tank)
• Fuel pump relay
• Fuse 10a
• Fuse 20a
• Fuse panel
• G104
• G132 (on eng block)
• G202 (behind left dash)
• Hot in start or run micro central electric
• Motronic engine control module (near brake booster, in protective case)
• Nca
• Power output stage 1 (on top of air cleaner housing)
• Power output stage 2 (on top of air cleaner housing)
• Red
• Throttle valve control module (on front of eng, on intake manifold)
• To spark plugs