ENGINE PERFORMANCE – Audi A3 2.0 TDI 2012 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

2.0L TURBO

2.0L Turbo, Engine Performance Wiring Diagram, CBFA (1 of 6) for Audi A3 2.0 TDI 2012

List of elements for 2.0L Turbo, Engine Performance Wiring Diagram, CBFA (1 of 6) for Audi A3 2.0 TDI 2012:

• (in left plenum chamber) g607
• A/t
• Cooling fans system
• Cruise control system
• Cruise control system starting/ charging system
• Engine control module (in center of plenum chamber)
• Engine coolant temperature (ect) sensor (radiator) (on lower radiator hose)
• Fuse 10a
• Fuse 20a
• Fuse 22
• Fuse 24 fuse 38 10a
• Fuse 25a
• Fuse 39 5a
• Fuse 5a
• Fuse panel b (integrated in engine compt e-box)
• Hot at all times
• M/t
• Map controlled engine cooling thermostat
• Nca
• Oxygen sensor (o2s) 3 behind three way catalytic converter (twc) & oxygen sensor (o2s) 1 behind three way catalytic converter (twc) heater (under vehicle, in exhaust)
• Oxygen sensor (o2s) behind three way catalytic converter (twc) & heater (under vehicle, in exhaust)
• Power distribution system
• Radiator identification sensor
• Red
• T14
• T40
• T94
• W/ e-box high
• W/ e-box low

2.0L Turbo, Engine Performance Wiring Diagram, CBFA (2 of 6) for Audi A3 2.0 TDI 2012

List of elements for 2.0L Turbo, Engine Performance Wiring Diagram, CBFA (2 of 6) for Audi A3 2.0 TDI 2012:

• (below left side of dash) vehicle electrical system control module
• (in left plenum chamber) g607
• (left side of engine, below oil filter) after-run coolant pump
• (on clutch slave cylinder assembly) (m/t) clutch position sensor
• 14-pin connector (not used)
• A/t
• Abs control module (at right rear of engine compt)
• Accelerator pedal position sensor & accelerator pedal position sensor 2 (on accelerator pedal)
• Brake light switch & brake pedal switch (brake light switch: top of brake pedal assembly)
• Coolant circulation pump relay (on electronics box high)
• Direct shift gear box (dsg) mechatronic (on transmission housing)
• G44 (behind left kick panel)
• G607 (in left plenum chamber)
• Heated oxygen sensor (ho2s) & oxygen sensor (o2s) heater (in exhaust at turbocharger exit)
• Leak detection pump (ldp) (under wheel housing liner, in right rear wheel housing)
• M/t
• Nca
• Red
• T14
• T20e
• T2az
• T52b
• T52c
• W/ start/stop system
• W/o start/stop system

2.0L Turbo, Engine Performance Wiring Diagram, CBFA (3 of 6) for Audi A3 2.0 TDI 2012

List of elements for 2.0L Turbo, Engine Performance Wiring Diagram, CBFA (3 of 6) for Audi A3 2.0 TDI 2012:

• (awd) fuel level sensor 2
• (on fuel pump, top of fuel tank) fuel pump (fp) control module
• (top of fuel tank) fuel level sensor & transfer fuel pump (fp)
• Fuse 40a
• Fuse panel b (integrated in engine compt e-box)
• G15
• G62 (on right "c" pillar)
• G655 (on left headlight)
• Hot at all times
• Ignition coils w/ power output stage (top of cylinder head, above cylinders)
• Nca
• Red
• Secondary air injection (air) pump relay
• T14
• T40
• To spark plug

2.0L Turbo, Engine Performance Wiring Diagram, CBFA (4 of 6) for Audi A3 2.0 TDI 2012

List of elements for 2.0L Turbo, Engine Performance Wiring Diagram, CBFA (4 of 6) for Audi A3 2.0 TDI 2012:

• 18a
• 27a
• Camshaft position (cmp) sensor (front of cylinder head)
• Computer data lines system
• Engine coolant level/temperature (ecl/ect) lamp
• Engine coolant temperature (ect) gauge
• Engine coolant temperature (ect) sensor (right rear of engine)
• Engine electronics ind lamp
• Fuel gauge
• Fuel pressure sensor (on left side of engine, in fuel rail)
• Fuse 10a
• Fuse 15a
• Fuse 5a
• Fuse panel c (under left side of dash)
• Hot at all times
• Instrument cluster control module
• Knock sensor (ks) 1 (on left front of engine block, near head)
• Knock sensor (ks) 2 (on left rear of engine block, near head)
• Low fuel level ind lamp
• Mil ind
• Nca
• Nca nca
• Oil pressure lamp
• Oil pressure switch (on oil filter bracket)
• Red
• Secondary air injection sensor 1
• T14
• T6s

2.0L Turbo, Engine Performance Wiring Diagram, CBFA (5 of 6) for Audi A3 2.0 TDI 2012

List of elements for 2.0L Turbo, Engine Performance Wiring Diagram, CBFA (5 of 6) for Audi A3 2.0 TDI 2012:

• (on engine block near transmission) engine speed (rpm) sensor
• (on engine intake air duct) mass air flow (maf) sensor
• (on throttle body) throttle valve control module
• Cylinder fuel injectors (right side of engine, below intake manifold)
• Engine control module (in center of plenum chamber)
• Fuse 10a
• Fuse panel c (under left side of dash)
• Nca
• Red
• T60
• T8i

2.0L Turbo, Engine Performance Wiring Diagram, CBFA (6 of 6) for Audi A3 2.0 TDI 2012

List of elements for 2.0L Turbo, Engine Performance Wiring Diagram, CBFA (6 of 6) for Audi A3 2.0 TDI 2012:

• (in charge air pipe) charge air pressure sensor
• (left side of engine) intake air temp- erature (iat) sensor
• (on cylinder head, in intake manifold) intake manifold runner position sensor
• (on left headlight) long member) g655
• Camshaft adjustment valve 1 (top rear of right cylinder head)
• Computer data lines system
• Engine control module (in center of plenum chamber)
• Evaporative emission (evap) canister purge regulator valve 1 (left rear of engine)
• Fuel pressure regulator valve (rear of engine)
• Fuse 10a
• Fuse panel b (integrated in engine compt e-box)
• Hot at all times
• Intake manifold runner control (imrc) valve
• Nca
• Red
• Secondary air injection (air) pump motor
• Secondary air injection (air) solenoid valve
• T14
• T40
• T60
• T6s
• T94
• Turbocharger recirculation valve
• Wastegate bypass regulator valve (on turbocharger)

2.0L Turbo, Engine Performance Wiring Diagram, CCTA (1 of 6) for Audi A3 2.0 TDI 2012

List of elements for 2.0L Turbo, Engine Performance Wiring Diagram, CCTA (1 of 6) for Audi A3 2.0 TDI 2012:

• (in left plenum chamber) g607
• 14 pin connector (not used) t14
• A/t
• Cooling fans system
• Cruise control system
• Engine control module (in center of plenum chamber)
• Engine coolant temperature (ect) sensor (radiator) (on lower radiator hose)
• Fuse 10a
• Fuse 20a
• Fuse 24 fuse 38 10a
• Fuse 25a
• Fuse 5a
• Fuse fuse 5a
• Fuse panel b (integrated in engine compt e-box)
• Hot at all times
• M/t
• Nca
• Oxygen sensor (o2s) behind three way catalytic converter (twc) & oxygen sensor (o2s) 1 (behind three way catalytic converter (twc)) heater (under vehicle, in exhaust)
• Red
• Starting/charging system
• T14
• T40
• T94
• W/ e-box high
• W/ e-box low

2.0L Turbo, Engine Performance Wiring Diagram, CCTA (2 of 6) for Audi A3 2.0 TDI 2012

List of elements for 2.0L Turbo, Engine Performance Wiring Diagram, CCTA (2 of 6) for Audi A3 2.0 TDI 2012:

• (below left side of dash) vehicle electrical system control module
• (brake light switch: top of brake pedal assembly) brake light switch & brake pedal switch
• (on clutch slave cylinder assembly) (m/t) clutch position sensor
• A/t
• Abs control module (at right rear of engine compt)
• Accelerator position sensor & accelerator pedal position sensor 2 (on accelerator pedal)
• Coolant circulation pump relay (on electronics box high)
• Fuse 20a
• Fuse panel b (integrated in engine compt e-box)
• G44 (behind left kick panel)
• G607 (in left plenum chamber)
• Heated oxygen sensor (ho2s) & oxygen sensor (o2s) heater (in exhaust, at turbocharger exit)
• Hot at all times
• Leak detection pump (ldp) (under wheel housing liner, in right rear wheel housing)
• M/t
• Nca
• Red
• T14
• T40
• T52b
• T52c
• Transmissions system

2.0L Turbo, Engine Performance Wiring Diagram, CCTA (3 of 6) for Audi A3 2.0 TDI 2012

List of elements for 2.0L Turbo, Engine Performance Wiring Diagram, CCTA (3 of 6) for Audi A3 2.0 TDI 2012:

• (awd) fuel level sensor 2
• (in left plenum chamber) g607
• (on fuel pump, top of fuel tank) fuel pump (fp) control module
• (on right "c" pillar) g62
• (top of fuel tank) fuel level sensor & transfer fuel pump (fp)
• After-run coolant pump (left side of engine, below oil filter)
• G15
• G655 (on left headlight long member)
• Ignition coils w/ power output stage (top of cylinder head, above cylinder)
• Nca
• Red
• T14
• T2az
• To spark plug

2.0L Turbo, Engine Performance Wiring Diagram, CCTA (4 of 6) for Audi A3 2.0 TDI 2012

List of elements for 2.0L Turbo, Engine Performance Wiring Diagram, CCTA (4 of 6) for Audi A3 2.0 TDI 2012:

• 27a
• Camshaft position (cmp) sensor (front of cylinder head)
• Computer data lines system
• Engine coolant level/temperature (ecl/ect) lamp
• Engine coolant temperature (ect) gauge
• Engine coolant temperature (ect) sensor (right rear of engine)
• Engine electronics ind lamp
• Fuel gauge
• Fuel pressure sensor (on left side of engine, in fuel rail)
• Fuse 10a
• Fuse 15a
• Fuse panel c (under left side of dash)
• Hot at all times
• Instrument cluster control module
• Knock sensor (ks) 1 (on left front of engine block, near head)
• Low fuel level ind
• Mil ind
• Nca
• Oil pressure indicator
• Oil pressure switch (on oil filter bracket)
• T14
• T6s

2.0L Turbo, Engine Performance Wiring Diagram, CCTA (5 of 6) for Audi A3 2.0 TDI 2012

List of elements for 2.0L Turbo, Engine Performance Wiring Diagram, CCTA (5 of 6) for Audi A3 2.0 TDI 2012:

• (on engine block near transmission) engine speed (rpm) sensor
• (on engine intake air duct) mass air flow (maf) sensor
• (on throttle body) throttle valve control module
• Cylinder fuel injectors (right side of engine, below intake manifold)
• Engine control module (in center of plenum chamber)
• Fuse 10a
• Fuse panel c (under left side of dash)
• Nca
• T60
• T8i

2.0L Turbo, Engine Performance Wiring Diagram, CCTA (6 of 6) for Audi A3 2.0 TDI 2012

List of elements for 2.0L Turbo, Engine Performance Wiring Diagram, CCTA (6 of 6) for Audi A3 2.0 TDI 2012:

• (in charge air pipe) charge air pressure sensor
• (left side of engine) intake air temp- erature (iat) sensor
• (on cylinder head, in intake manifold) intake manifold runner position sensor
• Camshaft adjustment valve 1 (top rear of right cylinder head)
• Computer data lines system
• Engine control module (in center of plenum chamber)
• Evaporative emission (evap) canister purge regulator valve 1 (left rear of engine)
• Fuel pressure regulator valve (rear of engine)
• Fuse 10a
• Fuse panel b (integrated in engine compt e-box)
• Hot at all times
• Intake manifold runner control (imrc) valve
• Nca
• Oil pressure regulator valve
• T14
• T40
• T60
• T6s
• T94
• Turbocharger recirculation valve
• Wastegate bypass regulator valve (on turbocharger)

2.0L TURBO DIESEL

2.0L Turbo Diesel, Engine Performance Wiring Diagram (1 of 5) for Audi A3 2.0 TDI 2012

List of elements for 2.0L Turbo Diesel, Engine Performance Wiring Diagram (1 of 5) for Audi A3 2.0 TDI 2012:

• (behind left kick panel) g639
• (in left plenum chamber) g607
• (on accelerator pedal) accelerator pedal position sensor 2 & acceleration position sensor
• (on engine intake air duct) mass air flow (maf) sensor
• Auxiliary heater heating element
• Cruise control system
• Engine control module (in center of plenum chamber)
• Engine coolant temperature (ect) sensor (on radiator) (on lower radiator hose)
• Engine preheating heating element
• Exhaust gas temperature (egt) sensor 1
• Exhaust gas temperature (egt) sensor 2
• Exhaust gas temperature (egt) sensor 3
• Exhaust gas temperature (egt) sensor 4
• Fuse 10a
• Fuse 30a
• Fuse 40a
• Fuse 80a
• Fuse panel a (on electronics box low)
• Fuse panel b (integrated in engine compt e-box)
• Heater control module (if equipped)
• Left front bumper socket
• Nca
• Red
• T14
• T40
• T94

2.0L Turbo Diesel, Engine Performance Wiring Diagram (2 of 5) for Audi A3 2.0 TDI 2012

List of elements for 2.0L Turbo Diesel, Engine Performance Wiring Diagram (2 of 5) for Audi A3 2.0 TDI 2012:

• (behind left kick panel) g44
• (below left side of dash) vehicle electrical system control module
• (brake light switch: top of brake pedal assembly) brake light switch & brake pedal switch
• (in exhaust at turbocharger exit)
• (under vehicle, in exhaust) oxygen sensor (o2s) behind three way catalytic converter (twc) & oxygen sensor 1 (o2s) (behind three way catalytic converter (twc)) heater
• Abs control module (at right rear of engine compt)
• Differential pressure sensor
• Egr potenti- ometer & exhaust gas recirculation (egr) motor
• Engine speed (rpm) sensor (on engine block near transmission)
• Exhaust door control unit
• Exhaust pressure sensor 1
• Fuel pressure sensor (on left side of engine, in fuel rail)
• G655 (on left headlight long member)
• Heated oxygen sensor (ho2s) & oxygen sensor (o2s) heater
• High heat output relay
• Low heat output relay
• Nca
• Red
• T14
• T149
• T52b
• T52c
• Throttle valve control module (on throttle body)
• Transmissions system

2.0L Turbo Diesel, Engine Performance Wiring Diagram (3 of 5) for Audi A3 2.0 TDI 2012

List of elements for 2.0L Turbo Diesel, Engine Performance Wiring Diagram (3 of 5) for Audi A3 2.0 TDI 2012:

• (top of fuel tank) fuel level sensor & transfer fuel pump (fp)
• Automatic glow time control module
• Auxiliary fuel pump
• Auxiliary fuel pump relay
• Egr temperature sensor
• Engine control module (in center of plenum chamber)
• Engine coolant temperature (ect) sensor (right rear of engine)
• Fuel pump (fp) relay
• Fuel temperature sensor
• Fuse 50a
• Fuse 5a
• Fuse panel b (integrated in engine compt e-box)
• G607 (in left plenum chamber)
• G62 (on right "c" pillar)
• G638 (behind right kick panel)
• Red
• T14
• T40
• T60

2.0L Turbo Diesel, Engine Performance Wiring Diagram (4 of 5) for Audi A3 2.0 TDI 2012

List of elements for 2.0L Turbo Diesel, Engine Performance Wiring Diagram (4 of 5) for Audi A3 2.0 TDI 2012:

• (on oil filter bracket) oil pressure switch
• 27a
• Camshaft position (cmp) sensor (front of cylinder head)
• Computer data lines system
• Diesel particle filter indicator lamp
• Engine coolant level/temp (ecl/ect) lamp
• Engine coolant temperature (ect) gauge
• Engine electronics ind
• Fuel gauge
• Fuel metering valve
• Fuel pressure regulator valve (rear of engine)
• Fuse 10a
• Fuse 15a
• Fuse panel c (under left side of dash)
• Instrument cluster control module
• Internal pressure sensor cylinder 1 & glow plug 1
• Internal pressure sensor cylinder 2 & glow plug 2
• Internal pressure sensor cylinder 3 & glow plug 3
• Internal pressure sensor cylinder 4 & glow plug 4
• Low fuel level ind
• Mil ind
• Oil pressure lamp
• Red
• T14

2.0L Turbo Diesel, Engine Performance Wiring Diagram (5 of 5) for Audi A3 2.0 TDI 2012

List of elements for 2.0L Turbo Diesel, Engine Performance Wiring Diagram (5 of 5) for Audi A3 2.0 TDI 2012:

• (if equipped) positive crankcase ventilation (pcv) heating element
• (in charge air pipe) intake air temperature (iat) & charge air pressure sensor
• Charge pressure actuator position sensor
• Computer data lines system
• Cooling fans system
• Cylinder fuel injectors (right side of engine, below intake manifold)
• Engine control module (in center plenum chamber)
• Exhaust gas recirculation (egr) position sensor 2 & motor 2
• Fuse 10a
• Fuse 20a
• Fuse 22 fuse 39 5a
• Fuse panel b (integrated in engine compt e-box)
• Intake manifold runner position sensor & intake flap motor (on intake manifold & rear of cylinder head)
• Red
• Starting/charging system
• T14
• T40
• T4at
• T60
• T94
• W/ e-box high
• W/ e-box low
• Wastegate bypass regulator valve (on turbocharger)