ENGINE PERFORMANCE – Volkswagen Passat TDI SE 2012 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

2.0L TURBO DIESEL

2.0L Turbo Diesel, Engine Performance Wiring Diagram (1 of 7) for Volkswagen Passat TDI SE 2012

List of elements for 2.0L Turbo Diesel, Engine Performance Wiring Diagram (1 of 7) for Volkswagen Passat TDI SE 2012:

• (on diesel particulate filter housing)
• (under left headlight assembly) g655
• (upper steering column) g605
• Engine control module (ecm) (left front of engine compt)
• Engine coolant temperature sensor on radiator outlet (integral w/ radiator hose)
• Exhaust gas temperature sensor 2
• Exhaust gas temperature sensor 3
• Exhaust gas temperature sensor 4
• G605 (upper steering column)
• Generator
• Nca
• Red
• Reducing agent injector (in exhaust, upstream of nox reduction catalytic converter)
• Starter
• Starting/ charging system
• Starting/charging system
• Steering column electronic system control module (w/ cruise control) (on steering column)
• T10g
• T16l
• T4t
• T94

2.0L Turbo Diesel, Engine Performance Wiring Diagram (2 of 7) for Volkswagen Passat TDI SE 2012

List of elements for 2.0L Turbo Diesel, Engine Performance Wiring Diagram (2 of 7) for Volkswagen Passat TDI SE 2012:

• (behind left side of dash) vehicle electrical system control module
• (on exhaust valve)
• (on intake air tube)
• (right rear of engine) oil pressure switch
• (upper steering column) g605
• Accelerator pedal module
• Adapter cable
• Automatic glow time control module (in engine compartment electronics box)
• Computer data lines system
• Exhaust door control unit
• Fuse 7.5a
• Fuse panel c (at left end of dash)
• G605 (upper steering column)
• G655 (under left headlight assembly)
• Heated oxygen sensor & oxygen sensor heater (in exhaust, upstream of catalytic converter)
• Mass air flow sensor
• Nca
• Nox sensor (in exhaust, downstream of exhaust valve)
• Nox sensor control module (near front of exhaust)
• Red
• Resistor
• T14
• T52b
• T52c

2.0L Turbo Diesel, Engine Performance Wiring Diagram (3 of 7) for Volkswagen Passat TDI SE 2012

List of elements for 2.0L Turbo Diesel, Engine Performance Wiring Diagram (3 of 7) for Volkswagen Passat TDI SE 2012:

• (on charge air cooler)
• (on clutch slave cylinder) (m/t) clutch position sensor
• (on coolant reservoir) engine coolant level sensor
• (upper steering column) g605
• Charge air pressure sensor/intake air temperature sensor & intake manifold sensor
• Computer data lines system
• Cylinder 1 combustion chamber pressure sensor & glow plug 1
• Cylinder 2 combustion chamber pressure sensor & glow plug 2
• Cylinder 3 combustion chamber pressure sensor & glow plug 3
• Cylinder 4 combustion chamber pressure sensor & glow plug 4
• Differential pressure sensor (mounted on diesel particulate filter housing)
• Electronic power control malfunction ind lamp
• Engine coolant level/ temperature indicator lamp
• Engine coolant temperature gauge
• Exhaust pressure sensor 1 (on diesel particulate filter housing)
• Fuel gauge
• G605 (upper steering column)
• Instrument cluster
• Instrument cluster control module
• Low fuel level ind lamp
• Malfunction ind lamp
• Oil pressure ind lamp
• Red
• T10g
• T14

2.0L Turbo Diesel, Engine Performance Wiring Diagram (4 of 7) for Volkswagen Passat TDI SE 2012

List of elements for 2.0L Turbo Diesel, Engine Performance Wiring Diagram (4 of 7) for Volkswagen Passat TDI SE 2012:

• (in engine compt electronics box) fuse panel b
• (left front of engine compartment)
• (not used)
• (on master brake cylinder)
• (right rear of engine compt)
• 14a
• 25a
• 26a
• Abs control module
• Brake light switch & brake pedal switch
• Cooling fans system
• Engine control module (ecm)
• Exterior lights system
• Fuse 10a
• Fuse 20a
• Fuse 30a
• Fuse 40a
• Fuse 50a
• Fuse 5a
• G605 (upper steering column)
• High heat output relay (w/ auxiliary heater)
• Hot at all times
• Lines system computer data
• Low heat output relay (w/ auxiliary heater)
• Red
• Starting/charging system
• T14
• T94

2.0L Turbo Diesel, Engine Performance Wiring Diagram (5 of 7) for Volkswagen Passat TDI SE 2012

List of elements for 2.0L Turbo Diesel, Engine Performance Wiring Diagram (5 of 7) for Volkswagen Passat TDI SE 2012:

• (in engine compt electronics box) fuse panel b
• (integral to reducing agent delivery module) reducing agent heater control module
• (integral to reducing agent delivery module) reducing agent tank heater & temperature sensor
• (top of engine) fuel injector cylinders
• 13b
• 21a
• 22a
• 24b
• 32a
• Fuse 10a
• Fuse 20a (or 30a)
• Fuse 40a
• Fuse panel c (at left end of dash)
• G50 (left side of trunk)
• Hot at all times
• Nca
• Positive crankcase ventilation heating element (on vent hose assembly)
• Red
• Reducing agent reservoir processing unit
• Reducing agent reservoir sensor (integral to reducing agent delivery module)
• Reducing agent reversing valve (integral to reducing agent delivery module)
• T14
• T14a
• T3ah
• T4as
• T5h
• T8l
• Wastegate bypass regulator valve (under intake manifold)

2.0L Turbo Diesel, Engine Performance Wiring Diagram (6 of 7) for Volkswagen Passat TDI SE 2012

List of elements for 2.0L Turbo Diesel, Engine Performance Wiring Diagram (6 of 7) for Volkswagen Passat TDI SE 2012:

• (in fuel delivery unit) fuel level sensor/transfer fuel pump
• (integral to reducing agent delivery module) reducing agent line heater
• (integral to reducing agent delivery module) reducing agent pump heater
• (left rear of engine)
• (on egr cooler/ in egr valve 2)
• (on upper relay carrier on vehicle electrical syste control module) fuel pump relay
• Auxiliary heater heating element
• Egr valve 1/egr motor & egr potentiometer (on intake manifold/ in egr valve 1)
• Egr valve 2/egr motor 2 & exhaust gas recirculation position sensor 2
• Engine speed sensor
• Fuel pressure sensor (end of fuel rail)
• G44
• G50 (left side of trunk)
• G51 (right side of trunk)
• Red
• T8l
• Throttle valve control module (on throttle body)

2.0L Turbo Diesel, Engine Performance Wiring Diagram (7 of 7) for Volkswagen Passat TDI SE 2012

List of elements for 2.0L Turbo Diesel, Engine Performance Wiring Diagram (7 of 7) for Volkswagen Passat TDI SE 2012:

• (in exhaust, upstream of catalytic converter) egr temperature sensor
• (integral to reducing agent delivery module) reducing agent metering system pressure sensor
• (on high pressure pump) fuel temperature sensor
• (on thermostat housing) engine coolant temperature sensor
• (on turbocharger) exhaust gas temperature sensor 1
• Camshaft position sensor (on front of cylinder head)
• Charge air cooling pump (rear of engine)
• Charge pressure actuator position sensor (on turbocharger)
• Engine control module (ecm) (left front of engine compt)
• Fuel metering valve (on high pressure pump)
• Fuel pressure regulator valve (end of fuel rail)
• G640 (lower left side of engine compt)
• Nca
• Red
• T14
• T60
• T8l

2.5L

2.5L, Engine Performance Wiring Diagram (1 of 5) for Volkswagen Passat TDI SE 2012

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

• (not used)
• (under left headlight assembly) g655
• 14a
• 21a
• 25a
• Abs control module (right rear of engine compt)
• Brake light switch/ brake pedal switch (on master brake cylinder)
• Clutch position sensor (m/t) (on clutch slave cylinder)
• Cooling fans system
• Engine control module (left front of engine compt)
• Engine coolant temperature sensor on radiator (integral w/ radiator hose)
• Fuse 10a
• Fuse 10a (or 15a)
• Fuse 15a
• Fuse 30a
• Fuse 40a
• Fuse 5a
• Fuse panel b (in engine compartment electronics box)
• G605 (upper steering column)
• Hot at all times
• If equipped
• Leak detection pump (ldp) (in right rear wheelwell)
• Secondary air injection pump relay (if equipped)
• T94

2.5L, Engine Performance Wiring Diagram (2 of 5) for Volkswagen Passat TDI SE 2012

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

• (behind left side of dash) vehicle electrical system control module
• (or red)
• 13b
• Accelerator pedal position sensor & sensor 2 (installed in accelerator pedal module)
• Computer data lines system
• Fuse 5a
• Fuse 7.5a
• Fuse panel c (at left end of dash)
• G605 (upper steering column)
• G640 (lower left side of engine compt)
• Heated oxygen sensor/ w/ oxygen sensor heater
• Hot at all times
• If equipped
• Nca
• Oxygen sensor after three way catalytic converter (if equipped)
• Oxygen sensor in bank 1 center three way catalytic converter (if equipped)
• Secondary air injection pump motor (if equipped) (lower left
• Side of engine)
• T52b
• T52c

2.5L, Engine Performance Wiring Diagram (3 of 5) for Volkswagen Passat TDI SE 2012

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

• (coolant reservoir) engine coolant level sensor
• (in fuel delivery unit) transfer fuel pump/ fuel level sensor
• (on upper relay carrier on vehicle electrical system control module)
• (or red)
• (top of engine)
• 24b
• Fuel pump relay
• Fuse 15a
• Fuse panel c (left side of dash)
• G15
• G51 (right side of trunk)
• G605 (upper steering column)
• G640 (lower left side of engine compt)
• 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 solenoid valve (right rear of engine)
• Starter
• T14
• To spark plug

2.5L, Engine Performance Wiring Diagram (4 of 5) for Volkswagen Passat TDI SE 2012

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

• (left rear of engine) oil pressure switch
• (or red)
• (rear of cylinder head) camshaft adjustment valve 1
• (upper steering column) g605
• Computer data lines system
• Electronic power control malfunction ind lamp
• Engine control module (left front of engine compt)
• Engine coolant level/ temperature indicator lamp
• Engine coolant temperature gauge
• Engine coolant temperature sensor (on thermostat housing)
• Evap canister purge regulator valve 1
• Fuel gauge
• Instrument cluster
• Instrument cluster control module
• Low fuel level ind lamp
• Malfunction ind lamp
• Oil level ind lamp
• Oil pressure ind lamp
• Red
• Reduced oil pressure switch (left rear of engine)
• T14
• T60
• Throttle valve control module (on throttle body)

2.5L, Engine Performance Wiring Diagram (5 of 5) for Volkswagen Passat TDI SE 2012

List of elements for 2.5L, Engine Performance Wiring Diagram (5 of 5) for Volkswagen Passat TDI SE 2012:

• (lower left rear of engine) oil pressure regulation valve
• (or red)
• (top of engine) fuel injector cylinder 1
• (top of engine) fuel injector cylinder 2
• (top of engine) fuel injector cylinder 3
• (top of engine) fuel injector cylinder 4
• (top of engine) fuel injector cylinder 5
• Camshaft position sensor (left front of cylinder head)
• Computer data lines system
• Engine control module (ecm) (left front of engine compt)
• Engine speed sensor (bottom rear of engine)
• Knock sensor 1 (right side of engine)
• Knock sensor 2 (right side of engine)
• Manifold absolute pressure sensor & intake air temperature sensor (rear of intake manifold)
• Nca
• Red
• Secondary air injection sensor 1
• Starter relay 1
• Starting/charging system
• Steering column electronic systems control module (w/ cruise control) (on steering column) t16l
• T14
• T60
• T94

3.6L

3.6L, Engine Performance Wiring Diagram (1 of 8) for Volkswagen Passat TDI SE 2012

List of elements for 3.6L, Engine Performance Wiring Diagram (1 of 8) for Volkswagen Passat TDI SE 2012:

• (integral w/ radiator hose) engine temperature sensor on radiator outlet
• (on master brake cylinder) brake lamp switch & brake pedal switch
• Cooling fans system
• Engine control module (ecm) (left front of engine compt)
• G605 (under steering column)
• G655 (under left headlight assembly)
• Starting/ charging system
• T14
• T94

3.6L, Engine Performance Wiring Diagram (2 of 8) for Volkswagen Passat TDI SE 2012

List of elements for 3.6L, Engine Performance Wiring Diagram (2 of 8) for Volkswagen Passat TDI SE 2012:

• (on steering column) steering column electronic system control module
• (on upper relay carrier on vehicle electrical system control module)
• Accelerator pedal module
• Dsg transmission mechatronic (if equipped)
• G605 (upper steering column)
• Mass airflow sensor & intake air temperature sensor (intake air temperature sensor : on charge air cooler)
• Red
• Starter
• T16l

3.6L, Engine Performance Wiring Diagram (3 of 8) for Volkswagen Passat TDI SE 2012

List of elements for 3.6L, Engine Performance Wiring Diagram (3 of 8) for Volkswagen Passat TDI SE 2012:

• (on coolant reservoir) engine coolant level sensor
• (on fuel delivery unit) fuel pump control module
• (on oil filter mount assembly) oil pressure switch
• (top right side of fuel tank) fuel delivery unit
• Fuse 7.5a
• Fuse panel c (at left end of dash)
• G51 (right side of trunk)
• G605 (upper steering column)
• G655 (under left headlight assembly)
• Heated oxygen sensor (integral w/ right exhaust manifold)
• Lines system computer data
• Nca
• Oil level thermal sensor (bottom of engine oil pan)
• Positive crankcase ventilation heating element (on vent hose assembly)
• Resistor
• T14
• T52b
• T52c
• T6z
• Vehicle electrical system control module (behind left side of dash)

3.6L, Engine Performance Wiring Diagram (4 of 8) for Volkswagen Passat TDI SE 2012

List of elements for 3.6L, Engine Performance Wiring Diagram (4 of 8) for Volkswagen Passat TDI SE 2012:

• (or 20a)
• 24a
• Charge air pressure gauge
• Computer data lines system
• Electronic power control malfunction indicator lamp
• Engine control module (left front of engine compt)
• Fuel gauge
• Fuse 15a
• Fuse 30a
• Fuse panel c (at left end of dash)
• Generator w/ voltage regulator
• Heated oxygen sensor 2
• Hot at all times
• Instrument cluster
• Instrument cluster control module
• Lines system computer data
• Low fuel level ind lamp
• Malfunction indicator lamp
• Nca
• Oil level ind lamp
• Oil pressure ind lamp
• Resistor
• System starting/charging
• T4t
• T94

3.6L, Engine Performance Wiring Diagram (5 of 8) for Volkswagen Passat TDI SE 2012

List of elements for 3.6L, Engine Performance Wiring Diagram (5 of 8) for Volkswagen Passat TDI SE 2012:

• (not used)
• 10a
• 11a
• 12a
• 14a
• Auxiliary engine coolant pump relay
• Fuse 10a
• Fuse 16a
• Fuse 20a
• Fuse 30a
• Fuse 5a
• Fuse panel b (in engine compt electronics box)
• Hot at all times
• Leak detection pump (ldp) (in right rear wheelwell)
• Nca
• Oxygen sensor 1 after three way catalytic converter
• Oxygen sensor 2 after catalytic converter
• Red
• Relay

3.6L, Engine Performance Wiring Diagram (6 of 8) for Volkswagen Passat TDI SE 2012

List of elements for 3.6L, Engine Performance Wiring Diagram (6 of 8) for Volkswagen Passat TDI SE 2012:

• (end of fuel rail) fuel pressure sensor
• (left front of cylinder head) camshaft position (cmp) sensor 2
• (on fuel rail cross-over tube) low fuel pressure sensor
• (on thermostat housing) engine coolant temperature (ect) sensor
• (right front of cylinder head) camshaft position (cmp) sensor
• Coolant recirculation pump
• G640 (lower left side of engine compt)
• T14
• Throttle valve control module (on throttle body)

3.6L, Engine Performance Wiring Diagram (7 of 8) for Volkswagen Passat TDI SE 2012

List of elements for 3.6L, Engine Performance Wiring Diagram (7 of 8) for Volkswagen Passat TDI SE 2012:

• (front of cylinder head) camshaft adjustment valve 1
• (front of cylinder head) camshaft adjustment valve 1 (exhaust)
• (on left side of engine) evap canister purge regulator valve 1
• (rear of engine) fuel pressure regulator valve
• Engine speed sensor (left rear of engine)
• Knock sensor 1 (between cylinders 1 & 3)
• Knock sensor 2 (between cylinders 4 & 6)
• Nca
• Red
• T14

3.6L, Engine Performance Wiring Diagram (8 of 8) for Volkswagen Passat TDI SE 2012

List of elements for 3.6L, Engine Performance Wiring Diagram (8 of 8) for Volkswagen Passat TDI SE 2012:

• (top of engine)
• Engine control module (ecm) (left front of engine compt)
• Fuel injector 1 cylinder
• Fuel injector 2 cylinder
• Fuel injector 3 cylinder
• Fuel injector 4 cylinder
• Fuel injector 5 cylinder
• Fuel injector 6 cylinder
• G15
• G640 (lower left side of engine compartment)
• Ignition coils w/ power output stage (top of engine)
• Nca
• Red
• T14
• T60
• To spark plug