ENGINE PERFORMANCE – Volkswagen Jetta SE 2012 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

2.0L

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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