ENGINE PERFORMANCE – Volkswagen Jetta S 2012 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

2.0L

2.0L, Engine Performance Wiring Diagram (1 of 4) for Volkswagen Jetta S 2012

List of elements for 2.0L, Engine Performance Wiring Diagram (1 of 4) for Volkswagen Jetta S 2012:

• (below left side of dash) vehicle electrical system control module
• (or 61)
• (or 62)
• 10a
• 14a
• Abs control module (right rear of corner engine compt)
• Brake lamp switch & brake pedal switch
• Clutch position sensor
• Computer data lines system
• Cooling fans system
• Engine control module (front left engine compt)
• Engine coolant temperature sensor (on radiator) (in coolant bypass/ thermostat housing)
• Fuse 10a
• Fuse 15a
• Fuse 20a
• Fuse 5a
• Fuse panel b (left front of engine compt)
• G605 (on steering column)
• G655 (below left headlight assembly)
• Hot at all times
• Leak detection pump (ldp) (in right rear wheelwell, near fuel filler door)
• T26
• T47
• T73a
• T73b
• T94
• W/ esp
• W/o esp

2.0L, Engine Performance Wiring Diagram (2 of 4) for Volkswagen Jetta S 2012

List of elements for 2.0L, Engine Performance Wiring Diagram (2 of 4) for Volkswagen Jetta S 2012:

• (in coolant reservoir) engine coolant level (ecl) sensor
• (on 12-relay carrier) fuel pump relay
• (part of fuel delivery unit) transfer fuel pump/ fuel level sensor
• 14b
• 16b
• 26b
• 35b
• 47b
• Accelerator pedal position sensor & accelerator pedal position sensor 2 (accelerator pedal position sensor: on accelerator pedal)
• Brake system pump & vacuum pump relay
• Fuse 10a
• Fuse 15a
• Fuse 1a
• Fuse panel c (left side of dash)
• G12 (lower left rear of engine compt)
• G655 (below left headlight assembly)
• G682 (right side of luggage compt)
• Heated oxygen sensor & oxygen sensor heater (heated oxygen sensor: at exhaust manifold junction)
• Hot at all times
• Ignition coil (left side of engine)
• Nca
• Oxygen sensor after three way catalytic converter & oxygen sensor 1 heater after catalytic converter
• Positive crankcase ventilation heating element (in air intake hose)
• Red
• T14
• T4y
• To spark plug

2.0L, Engine Performance Wiring Diagram (3 of 4) for Volkswagen Jetta S 2012

List of elements for 2.0L, Engine Performance Wiring Diagram (3 of 4) for Volkswagen Jetta S 2012:

• (on oil pump housing) oil pressure switch
• Computer data lines system
• Cruise control ind lamp
• Electronic power control malfunction ind lamp
• Engine control module (front left engine compt)
• Engine coolant level/ temperature ind lamp
• Engine coolant temperature gauge
• Fuel gauge
• G605 (on steering column)
• Generator ind lamp
• Instrument cluster
• Instrument cluster control module
• Low fuel ind lamp
• Malfu- nction ind lamp
• Oil pressure ind lamp
• Red
• Speed0- meter
• T14
• T60
• Tacho- meter
• Warning buzzer & tone

2.0L, Engine Performance Wiring Diagram (4 of 4) for Volkswagen Jetta S 2012

List of elements for 2.0L, Engine Performance Wiring Diagram (4 of 4) for Volkswagen Jetta S 2012:

• (in intake manifold)
• Camshaft position sensor (in front of engine block)
• Computer data lines system
• Cruise control system
• Cylinder 1 fuel injector
• Cylinder 2 fuel injector
• Cylinder 3 fuel injector
• Cylinder 4 fuel injector
• Engine control module (front left engine compt)
• Engine coolant temperature (ect) sensor (in coolant bypass/ thermostat housing)
• Engine speed (rpm) sensor (in front of cylinder block)
• Evaporative emission (evap) canister purge regulator valve 1
• Knock sensor 1 (in cylinder block, in front)
• Manifold absolute pressure (map) sensor & intake air temperature sensor (manifold absolute pressure (map) sensor: rear of intake manifold) intake air temperature sensor: (on intake manifold)
• Red
• Starting/charging system
• T14
• T4y
• T60
• T94
• Throttle valve control module (on throttle body)

2.0L TURBO

2.0L Turbo, Engine Performance Wiring Diagram (1 of 6) for Volkswagen Jetta S 2012

List of elements for 2.0L Turbo, Engine Performance Wiring Diagram (1 of 6) for Volkswagen Jetta S 2012:

• (lower left rear of engine compt) g12
• (or 61)
• (or 62)
• 10a
• 13a
• 14a
• 21a
• A/t
• Cbfa
• Cooling fans system
• Cruise control system
• Dsg transmission mechatronic
• Engine control module (front left engine compt)
• Engine coolant temperature sensor (on radiator) (lower left corner of radiator)
• Fuse 10a
• Fuse 15a
• Fuse 20a
• Fuse 25a
• Fuse 40a
• Fuse 5a
• Fuse panel b (left front of engine compt)
• G655 (below left headlight assembly)
• Hot at all times
• Leak detection pump (in right rear wheelwell, near fuel filler door)
• M/t
• Mass airflow (maf) sensor (in intake air duct)
• Nca
• Oxygen sensor after three way catalytic converter (twc)/ heater oxygen sensor 1 after catalytic converter (cbfa)
• Red
• Secondary air injection (air) pump motor (cbfa) (on lower left side of engine)
• Secondary air injection pump relay (cbfa)
• Starting/ charging system
• Steering column electronic systems control module (on steering column)
• T16l
• T20e
• T94

2.0L Turbo, Engine Performance Wiring Diagram (2 of 6) for Volkswagen Jetta S 2012

List of elements for 2.0L Turbo, Engine Performance Wiring Diagram (2 of 6) for Volkswagen Jetta S 2012:

• (below left side of dash) vehicle electrical system control module
• (ccta) oxygen sensor after three way catalytic converter (twc)/ heater oxygen sensor 1 after catalytic converter (cbfa) heater oxygen sensor 2 & oxygen sensor 2 heater 2
• (part of fuel delivery unit) transfer fuel pump/ fuel level sensor
• 14b
• 16b
• 47b
• A/t
• Abs control module (right rear corner of engine compt)
• Accelerator pedal position sensor & accelerator pedal position sensor 2 (accelerator pedal position sensor: on accelerator pedal)
• Cbfa
• Engine coolant level (ecl) sensor (in coolant reservoir)
• Fuse 10a
• Fuse 15a
• Fuse panel c (left side of dash)
• Heated oxygen sensor & oxygen sensor heater (heated oxygen sensor at exhaust manifold junction)
• Hot at all times
• M/t
• Nca
• Red
• T52b
• T52c
• W/ esp
• W/o esp

2.0L Turbo, Engine Performance Wiring Diagram (3 of 6) for Volkswagen Jetta S 2012

List of elements for 2.0L Turbo, Engine Performance Wiring Diagram (3 of 6) for Volkswagen Jetta S 2012:

• (part of fuel delivery unit) fuel pump (fp) control module
• Cbfa
• Charge air pressure gauge
• Computer data lines system
• Electronic power control malfunction indicator lamp
• Engine control module (front left engine compt)
• Engine coolant level indicator lamp
• Fuel gauge
• G655 (below left headlight assembly)
• G682 (right side of luggage compt)
• Instrument cluster
• Instrument cluster control module
• Low fuel level indicator lamp
• Malfunction indicator lamp
• Oil level indicator lamp
• Oil level thermal sensor (bottom of oil pan)
• Oil pressure indicator lamp
• Red
• T6z
• T94

2.0L Turbo, Engine Performance Wiring Diagram (4 of 6) for Volkswagen Jetta S 2012

List of elements for 2.0L Turbo, Engine Performance Wiring Diagram (4 of 6) for Volkswagen Jetta S 2012:

• Brake light switch
• Charge air pressure sensor (left rear of engine)
• Clutch position sensor (m/t)
• G44 (lower left "a" pillar)
• Intake manifold runner position sensor (on intake manifold)
• Oil pressure switch (on oil pump housing)
• T14
• T6aq

2.0L Turbo, Engine Performance Wiring Diagram (5 of 6) for Volkswagen Jetta S 2012

List of elements for 2.0L Turbo, Engine Performance Wiring Diagram (5 of 6) for Volkswagen Jetta S 2012:

• (front of cylinder head) camshaft adjustment valve 1
• (intake manifold)
• (left of exhaust manifold) (cbfa) secondary air injection (air) solenoid valve
• (on intake manifold) intake manifold runner control valve
• (on turbocharger) turbocharger recirculating valve
• (on turbocharger) wastegate bypass regulator valve
• Camshaft position sensor (left side of engine)
• Cbfa
• Engine coolant temperature (ect) sensor (in coolant pump housing)
• Evaporative emission (evap) canister purge regulator valve 1
• Fuel injector cylinder 1
• Fuel injector cylinder 2
• Fuel injector cylinder 3
• Fuel injector cylinder 4
• Fuel pressure sensor (on fuel rail)
• Intake air temperature (iat) sensor (on intake manifold)
• Knock sensor 1
• Nca
• Secondary air injection (air) sensor 1 (cbfa) (on secondary air injection solenoid valve)
• T14
• T6aq
• T8i

2.0L Turbo, Engine Performance Wiring Diagram (6 of 6) for Volkswagen Jetta S 2012

List of elements for 2.0L Turbo, Engine Performance Wiring Diagram (6 of 6) for Volkswagen Jetta S 2012:

• (left rear of engine) engine speed (rpm) sensor
• (on high pressure pump) fuel pressure regulator valve
• (top of cylinders)
• Cbfa
• Engine control module (front left engine compt)
• G12 (lower left side of engine compt)
• G15
• Ignition coil 1 w/ power output stage
• Ignition coil 2 w/ power output stage
• Ignition coil 3 w/ power output stage
• Ignition coil 4 w/ power output stage
• Nca
• Red
• T14
• T60
• Throttle valve control module (on throttle body)
• To spark plug

2.0L TURBO DIESEL

2.0L Turbo Diesel, Engine Performance Wiring Diagram (1 of 6) for Volkswagen Jetta S 2012

List of elements for 2.0L Turbo Diesel, Engine Performance Wiring Diagram (1 of 6) for Volkswagen Jetta S 2012:

• (accelerator pedal position sensor: on accelerator pedal) accelerator pedal position sensor 2 & accelerator pedal position sensor
• (below left headlight assembly) g655
• (in intake air duct) mass airflow (maf) sensor
• (or 61)
• (or 62)
• 14a
• 26a
• Cruise control system
• Engine control module (front left engine compt)
• Engine coolant temperature sensor (on radiator) (lower left corner of radiator)
• Exhaust gas temperature (egt) sensor 1 (on turbocharger)
• Exhaust gas temperature (egt) sensor 2 (on diesel particulate filter)
• Exhaust gas temperature (egt) sensor 3 (on diesel particulate filter)
• Exhaust gas temperature (egt) sensor 4 (on diesel particulate filter)
• Fuse 10a
• Fuse 15a
• Fuse 20a
• Fuse 5a
• Fuse 60a
• Fuse panel b (left front of engine compt)
• Hot at all times
• Red
• T94
• Transmi- ssions system

2.0L Turbo Diesel, Engine Performance Wiring Diagram (2 of 6) for Volkswagen Jetta S 2012

List of elements for 2.0L Turbo Diesel, Engine Performance Wiring Diagram (2 of 6) for Volkswagen Jetta S 2012:

• (below left side of dash) vehicle electrical system control module
• (heated oxygen sensor: at top of diesel particulate filter) heated oxygen sensor & oxygen sensor heater
• (right rear corner of engine compt) abs control module
• Differential pressure sensor
• Egr cooler switch over valve
• Egr potentiometer & egr vacuum regulator solenoid valve (egr potentiometer: part of egr vacuum regulator solenoid valve) (egr vacuum regulator solenoid valve: on throttle body)
• Engine speed (rpm) sensor (left rear of engine)
• Exhaust door control unit
• Exhaust pressure sensor 1 (on auxiliary fuel pump bracket)
• Nca
• Oxygen sensor after three way catalytic converter & oxygen sensor 1 after catalytic converter heater
• Red
• T10g
• T14
• T26
• T47
• T5k
• T73a
• W/ abs & esp
• W/ abs & w/o esp

2.0L Turbo Diesel, Engine Performance Wiring Diagram (3 of 6) for Volkswagen Jetta S 2012

List of elements for 2.0L Turbo Diesel, Engine Performance Wiring Diagram (3 of 6) for Volkswagen Jetta S 2012:

• (left kick panel) g602
• (on steering column) g605
• Auxiliary heater heating element
• Brake pedal switch & brake light switch
• Fuel pressure sensor (on fuel rail)
• Fuse panel b (left front of engine compt)
• G12 (lower left rear of engine compt)
• High heat output relay (w/ auxiliary heater)
• Hot at all times
• Low heat output relay (w/ auxiliary heater)
• Red
• T14
• Throttle valve control module & throttle position sensor (throttle valve control module: on throttle body) (throttle position sensor: on accelerator pedal)

2.0L Turbo Diesel, Engine Performance Wiring Diagram (4 of 6) for Volkswagen Jetta S 2012

List of elements for 2.0L Turbo Diesel, Engine Performance Wiring Diagram (4 of 6) for Volkswagen Jetta S 2012:

• (on 12-relay carrier) fuel primer relay
• (on 12-relay carrier) fuel pump relay
• (on 12-relay carrier) fuel pump relay 2
• (on auxiliary relay carrier) automatic glow time control module
• (part of fuel delivery unit) fuel level sensor & transfer fuel pump (fp)
• Egr temperature sensor
• Engine control module (front left engine compt)
• Engine coolant temperature (ect) sensor (rear of cylinder bank)
• Fuel pump 2
• Fuel temperature sensor (on high pressure pump)
• G12 (lower left side of engine compt)
• G655 (below left headlight assembly)
• G682 (right side of luggage compt)
• Red
• T10g
• T14
• T60

2.0L Turbo Diesel, Engine Performance Wiring Diagram (5 of 6) for Volkswagen Jetta S 2012

List of elements for 2.0L Turbo Diesel, Engine Performance Wiring Diagram (5 of 6) for Volkswagen Jetta S 2012:

• (in coolant reservoir) engine coolant level (ecl) sensor
• (on oil pump housing) oil pressure switch
• Camshaft position (cmp) sensor (end of cylinder head)
• Computer data lines system
• Cruise control ind lamp
• Electronic power control malfunction ind lamp
• Engine coolant level/temp (ecl/ect) ind lamp
• Engine coolant temperature gauge
• Fuel gauge
• Fuel metering valve (on high pressure fuel pump)
• Fuel pressure regulator valve (on fuel rail)
• Instrument cluster
• 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 lamp
• Malfunction ind lamp
• Nca
• Red
• Speedometer
• T14
• Tacho- meter

2.0L Turbo Diesel, Engine Performance Wiring Diagram (6 of 6) for Volkswagen Jetta S 2012

List of elements for 2.0L Turbo Diesel, Engine Performance Wiring Diagram (6 of 6) for Volkswagen Jetta S 2012:

• (in intake scoop) (if equipped) positive crankcase ventilation (pcv) heating element
• 14b
• 15b
• 16b
• 47b
• Charge pressure actuator position sensor (in vacuum diaphragm)
• Computer data lines system
• Cooling fans system
• Cylinder fuel injectors (top of cylinders)
• Engine control module (front left engine compt)
• Exhaust gas recirculation (egr) position sensor 2 & egr valve 2
• Fuse 10a
• Fuse 15a
• Fuse panel c (left side of dash)
• Hot at all times
• Intake air temperature (iat) & charge air pressure sensor (intake air temperature (iat) sensor: integral to charge air pressure sensor) (charge air pressure sensor: in charge air duct)
• Intake manifold runner position sensor & intake flap motor (on intake manifold)
• Red
• Starting/charging system
• T14
• T4aj
• T60
• T94
• Wastegate bypass regulator valve (on turbocharger)

2.5L

2.5L, Engine Performance Wiring Diagram (1 of 5) for Volkswagen Jetta S 2012

List of elements for 2.5L, Engine Performance Wiring Diagram (1 of 5) for Volkswagen Jetta S 2012:

• (or 61)
• (or 62)
• 10a
• 14a
• 21a
• 25a
• Brake pedal switch & brake lamp switch (on brake master cylinder)
• Clutch position sensor (m/t)
• Cooling fans system
• Engine control module (front left engine compt)
• Engine coolant temperature sensor (radiator outlet) (left rear of cylinder head)
• Fuse 10a
• Fuse 15a
• Fuse 20a
• Fuse 40a
• Fuse 5a
• Fuse panel b (left front of engine compt)
• G605 (on steering column)
• G655 (below left headlight assembly)
• Hot at all times
• Leak detection pump (in right rear wheelwell, near fuel filler door)
• Secondary air injection (air) pump relay
• T94

2.5L, Engine Performance Wiring Diagram (2 of 5) for Volkswagen Jetta S 2012

List of elements for 2.5L, Engine Performance Wiring Diagram (2 of 5) for Volkswagen Jetta S 2012:

• (below left side of dash) vehicle electrical system control module
• (on 12-relay carrier) converter box
• (right rear corner of engine compt) abs control module
• 14b
• 16b
• Accelerator pedal position sensor & accelerator pedal position sensor 2 (accelerator pedal position sensor: on accelerator pedal)
• Computer data lines system
• Fuse 10a
• Fuse panel c (left side of dash)
• G12 (lower left rear of engine compt)
• G605 (on steering column)
• Heated oxygen sensor (if equipped) (at exhaust manifold junction)
• Nca
• Oxygen sensor after three way catalytic converter
• Oxygen sensor bank 1 center three way catalytic converter (if equipped) (in center of bank 1 catalytic convertor)
• Red
• Secondary air injection (air) pump motor (on lower left side of engine)
• T26
• T47
• T73a
• T73b
• W/ esp
• W/o esp

2.5L, Engine Performance Wiring Diagram (3 of 5) for Volkswagen Jetta S 2012

List of elements for 2.5L, Engine Performance Wiring Diagram (3 of 5) for Volkswagen Jetta S 2012:

• (in coolant reservoir) engine coolant level (ecl) sensor
• (on 12-relay carrier) fuel pump relay
• (on oil pump housing) oil pressure switch
• (on top of engine)
• (part of fuel delivery unit) transfer fuel pump/ fuel level sensor
• (right side of luggage compt)
• 35b
• 47b
• Fuse 15a
• Fuse 1a
• Fuse panel c (left side of dash)
• G12 (lower left side of engine compt)
• G15
• G605 (on steering column)
• G682
• Hot at all times
• Ignition coil 1 w/ power output stage
• Ignition coil 2 w/ power output stage
• Ignition coil 3 w/ power output stage
• Ignition coil 4 w/ power output stage
• Ignition coil 5 w/ power output stage
• Nca
• Red
• Secondary air injection (air) solenoid valve (right of exhaust manifold)
• Starter
• T14
• To spark plug

2.5L, Engine Performance Wiring Diagram (4 of 5) for Volkswagen Jetta S 2012

List of elements for 2.5L, Engine Performance Wiring Diagram (4 of 5) for Volkswagen Jetta S 2012:

• Computer data lines system
• Cruise control ind lamp
• Electronic power control malfunction ind lamp
• Engine control module (ecm) (front left engine compt)
• Engine coolant level/ temperature ind lamp
• Engine coolant temperature (ect) sensor (left rear of cylinder head)
• Engine coolant temperature gauge
• Fuel gauge
• Generator inidicator lamp
• Instrument cluster
• Instrument cluster control module
• Malfunction ind lamp
• Oil pressure ind lamp
• Red
• Speed0- meter
• T14
• T60
• Tacho- meter
• Throttle valve control module (on throttle body)
• Warning buzzer & tone

2.5L, Engine Performance Wiring Diagram (5 of 5) for Volkswagen Jetta S 2012

List of elements for 2.5L, Engine Performance Wiring Diagram (5 of 5) for Volkswagen Jetta S 2012:

• (on lower right side of engine, below exhaust manifold)
• (rear of cylinder head) camshaft adjustment valve 1
• (top left side of engine)
• Camshaft position (cmp) sensor (left side of engine)
• Computer data lines system
• Cruise control system
• Cylinder 1 fuel injector
• Cylinder 2 fuel injector
• Cylinder 3 fuel injector
• Cylinder 4 fuel injector
• Cylinder 5 fuel injector
• Engine control module (front left engine compt)
• Engine speed (rpm) sensor (left rear of engine)
• Evaporative emission (evap) canister purge regulator valve 1
• Knock sensor 1
• Knock sensor 2
• Manifold absolute pressure (map) sensor (if equipped) (rear of intake manifold)
• Nca
• Oil pressure regulation valve (on oil pump housing)
• Red
• Secondary air injection sensor 1 (if equipped) (rear of top of engine)
• Starting/charging system
• T14
• T60
• T94