ENGINE PERFORMANCE – Volkswagen Passat GLS 2004 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

1.8L TURBO

1.8L Turbo, Engine Performance Wiring Diagram (1 of 3) for Volkswagen Passat GLS 2004

List of elements for 1.8L Turbo, Engine Performance Wiring Diagram (1 of 3) for Volkswagen Passat GLS 2004:

• (left rear of engine compt)
• (not used)
• (pins 10-17 not used)
• (pins 44-50 not used)
• (pins 6-8 not used)
• (under left side of dash) data link connector
• 29a
• A/c system
• Accelerator pedal position sensors 1 & 2 (in pedal assembly)
• Bat(30)
• Cruise control system
• Defogger system
• Evaporative emission canister purge regulator valve (right side of engine compt, next to air cleaner housing)
• Fuel pump relay
• Fuse 20a
• Fuse bracket (on battery cover)
• Fuse panel (under left side of dash)
• G28
• Heated oxygen sensor (ho2s) (in catalytic converter inlet, near turbocharger)
• Hot at all times
• Ignition switch
• Leak detection pump (in right rear wheelwell, behind plastic liner)
• Lock
• Mass airflow sensor (inside air cleaner housing)
• Motronic engine control module (in protective box, in left rear corner of engine compartment)
• Nca
• Oxygen sensor (o2s) (behind catalytic converter)
• Red
• Relay panel
• Run
• S2/5
• S3/3
• S3/4
• S3/6
• Secondary air pump fuse 40a
• Start

1.8L Turbo, Engine Performance Wiring Diagram (2 of 3) for Volkswagen Passat GLS 2004

List of elements for 1.8L Turbo, Engine Performance Wiring Diagram (2 of 3) for Volkswagen Passat GLS 2004:

• (lower right "b" pillar) g78
• 15a
• 28a
• 32a
• 34a
• Brake booster relay (a/t)
• Brake booster sensor (a/t)
• Brake vacuum pump (a/t)
• Electronic power control fault light
• Engine speed (rpm) sensor (left rear of cylinder block)
• Fuel pump
• Fuse 15a
• Fuse 20a
• Fuse panel
• G28 (left rear of engine compt)
• Hot at all times
• Instrument cluster
• Knock sensor 1 (on left front of engine block)
• Knock sensor 2 (on left rear of engine block)
• Malfunction indicator lamp
• Nca
• Oil level indicator light
• Oil pressure warning light
• Red
• Safety fuse 1
• Secondary air injection pump motor
• Secondary air injection pump relay (in control module housing, near master cylinder)
• Secondary air injection solenoid valve (beneath intake manifold, on bracket)
• T32a/25
• T32a/3
• T32b/19
• T32b/20

1.8L Turbo, Engine Performance Wiring Diagram (3 of 3) for Volkswagen Passat GLS 2004

List of elements for 1.8L Turbo, Engine Performance Wiring Diagram (3 of 3) for Volkswagen Passat GLS 2004:

• (beneath intake manifold, on bracket) turbocharger recirculating valve
• (not used)
• (on intake manifold, near throttle body) intake air temperature sensor
• (on valve cover)
• (rear side of cyl head) engine coolant temperature sensor
• (right front corner of engine compt) wastegate bypass regu- lator valve
• 13a
• 15a
• Abs system
• Brake- light switch (on pedal cluster)
• Camshaft adjustment valve 1
• Camshaft position sensor (on front of cylinder head, behind timing belt cover)
• Charge air pressure sensor
• Clutch vacuum vent valve switch (below left side of dash, on pedal cluster)
• Cruise control system
• Fuel injectors
• Fuse 10a
• Fuse panel (behind left side of dash)
• G16
• G28 (left rear of engine compt)
• Hot at all times
• Ignition coils
• M/t
• Motronic engine control module (in protective box, in left rear corner of engine compt)
• Nca
• Red
• Safety fuse 1
• Throttle valve control module (on throttle body)
• To spark plug
• W/ asr

2.0L

2.0L, Engine Performance Wiring Diagram (1 of 4) for Volkswagen Passat GLS 2004

List of elements for 2.0L, Engine Performance Wiring Diagram (1 of 4) for Volkswagen Passat GLS 2004:

• 31a
• A/c system
• Acc
• Cooling fans system
• Cruise control system
• Diesel direct fuel injection (dfi) engine control module (ecm) (below left side of dash panel cover)
• Fuse 15a
• Fuse 20a
• Fuse panel (under left side of dash)
• G28 (on left side of firewall)
• Heated oxygen sensor (below vehicle, front of 3-way catalytic conv)
• Hot at all times
• Ignition/ starter switch
• Lock
• Mass airflow (maf) sensor (attached to air cleaner housing)
• Nca
• Red
• Run
• Start
• Starting/ charging system
• T94
• Throttle position (tp) sensor/ closed throttle position (ctp) switch/kickdown switch (above accelerator pedal)

2.0L, Engine Performance Wiring Diagram (2 of 4) for Volkswagen Passat GLS 2004

List of elements for 2.0L, Engine Performance Wiring Diagram (2 of 4) for Volkswagen Passat GLS 2004:

• 80a
• Automatic glow time control module
• Cruise control system
• Defoggers system
• Diesel direct fuel injection (dfi) engine control module (ecm) (below left side of dash panel cover)
• Engine glow plugs
• Fuel pump
• Fuel pump relay (on relay panel)
• Fuse
• G2 (above right motor mount)
• G28 (on left side of firewall)
• G78 (on lower right "b" pillar)
• Glow plug fuse
• Heated oxygen sensor circuit breaker
• Nca
• Red
• Starting/ charging system
• Starting/charging system
• T94
• Turbocharge intake temperature sensor

2.0L, Engine Performance Wiring Diagram (3 of 4) for Volkswagen Passat GLS 2004

List of elements for 2.0L, Engine Performance Wiring Diagram (3 of 4) for Volkswagen Passat GLS 2004:

• Brake- light switch (below left side of dash, on pedal cluster)
• Camshaft position sensor (on cylinder head)
• Clutch vacuum vent valve switch (m/t) (below left side of dash, on pedal cluster)
• Computer data lines system
• Cruise control system
• Fuse 10a
• Fuse 15a
• Fuse panel (under left side of dash)
• G28 (on left side of firewall)
• Hot at all times
• Injectors fuse
• Instrument cluster
• Intake air temperature sensor/charge air pressure sensor
• Intake flap motor
• Positive crankcase ventilation (pcv) heating element (in fresh air intake hose, near thottle body)
• Red
• T32a
• T32b
• Wastegate bypass regulator valve (front of engine compt)

2.0L, Engine Performance Wiring Diagram (4 of 4) for Volkswagen Passat GLS 2004

List of elements for 2.0L, Engine Performance Wiring Diagram (4 of 4) for Volkswagen Passat GLS 2004:

• (on coolant flange) fuel temperature sensor
• Diesel direct fuel injection (dfi) engine control module (ecm) (below left side of dash panel cover)
• Egr vacuum regulator solenoid valve
• Engine coolant temperature (ect) sensor (on rear of cyl head)
• Engine speed (rpm) sensor (left rear of engine block)
• Nca
• Pump/injector valves
• T60

2.8L

2.8L, Engine Performance Wiring Diagram (1 of 3) for Volkswagen Passat GLS 2004

List of elements for 2.8L, Engine Performance Wiring Diagram (1 of 3) for Volkswagen Passat GLS 2004:

• (left rear of engine compt) g104
• (not used)
• (pins 14-17 not used)
• (pins 19-24 not used)
• (pins 7-9 not used)
• A/c system
• A/t
• Accelerator pedal position sensors 1 & 2 (in pedal assembly)
• Bat(30)
• Battery
• Cruise control system
• Defogger system
• Evaporative emission (evap) canister purge regulator valve (right side of eng compt)
• Fuel pump relay
• Fuse 20a
• Fuse bracket (on battery cover)
• Fuse panel
• Heated oxygen sensor (ho2s) (behind left cyl head, in exhaust manifold)
• Leak detection pump (ldp) (in left rear wheelhouse)
• Mass airflow (maf) sensor (attached to air cleaner housing)
• Motronic engine control module (in protective box, in left rear corner of engine compt)
• Nca
• Oxygen sensor (o2s) (behind right of catalytic converter)
• Red
• S2/5
• S3/3
• S3/4
• S3/6
• Secondary air pump fuse 40a
• Thirteen fold auxiliary relay panel (under left side of dash)

2.8L, Engine Performance Wiring Diagram (2 of 3) for Volkswagen Passat GLS 2004

List of elements for 2.8L, Engine Performance Wiring Diagram (2 of 3) for Volkswagen Passat GLS 2004:

• (behind right of catalytic converter) oxygen sensor (o2s) 2
• (lower right "b" pillar) g78
• (mil)
• (under left side of dash) data link connector
• 28a
• 32a
• 34a
• Camshaft adjustment valve 1
• Camshaft adjustment valve 2
• Engine speed (rpm) sensor (on left side of transmission bellhousing)
• Fuel pump (in fuel tank)
• Fuse 15a
• Fuse 20a
• Fuse panel
• G28 (left rear of engine compt)
• Heated oxygen sensor (ho2s) 2 (behind left cyl head, on exhaust manifold)
• Hot at all times
• Ignition switch
• Instrument cluster
• Knock sensor (ks) 1 (right side of engine block, beneath intake manifold)
• Knock sensor (ks) 2 (left side of engine block, beneath intake manifold)
• Lock
• Malfunction indicator lamp
• Nca
• Red
• Run
• Secondary air injection (air) pump motor (right front corner of engine compt)
• Secondary air injection (air) pump relay (near master cylinder)
• Secondary air injection solenoid valve (on rear of intake manifold)
• Start
• T32a/25
• T32a/3
• T32b/19
• T32b/20

2.8L, Engine Performance Wiring Diagram (3 of 3) for Volkswagen Passat GLS 2004

List of elements for 2.8L, Engine Performance Wiring Diagram (3 of 3) for Volkswagen Passat GLS 2004:

• (on rear of right cylinder head) engine coolant temperature (ect) sensor
• (rear of intake manifold) intake manifold change-over valve
• (rear of intake manifold, in intake duct) intake air temperature (iat) sensor
• 15a
• A/t
• Abs control module
• Brake booster pressure sensor
• Brake booster relay
• Brake system vacuum pump
• Brake- light switch (above brake pedal)
• Camshaft position (cmp) sensor (front of right cylinder head)
• Camshaft position (cmp) sensor 2 (rear of left cylinder head)
• Clutch vacuum vent valve switch (below left side of dash, on pedal cluster)
• Cruise control system
• Fuel injectors
• Fuse 10a
• Fuse 7.5a
• Fuse panel
• G104 (left rear of engine compt)
• G28 (left rear of engine compartment)
• Hot at all times
• Ignition coil (on left side of cylinder head)
• Motronic engine control module (in left rear corner of engine compt)
• Nca
• Red
• Safety fuse 1
• Spark plugs
• Suppressor
• Throttle valve control module (on throttle body)

4.0L

4.0L, Engine Performance Wiring Diagram (1 of 6) for Volkswagen Passat GLS 2004

List of elements for 4.0L, Engine Performance Wiring Diagram (1 of 6) for Volkswagen Passat GLS 2004:

• (below right headlight) secondary air injection (air) pump motor
• (left rear corner of eng compt)
• (near master cylinder) secondary air injection (air) pump relay
• (not used
• (on air cleaner housing)
• (on left exhaust manifold)
• (on right exhaust manifold)
• (rear of left catalytic converter)
• (rear of right catalytic converter)
• (top right of radiator) engine coolant temperature (ect) sensor (radiator)
• (under left side of dash) data link connector (dlc)
• 13a
• 32a
• Accelerator pedal position sensors 1 & 2 (in pedal assembly)
• Brakelight switch (on pedal cluster)
• Computer data lines system
• Cruise control
• Defogger system
• Fuse 10a
• Fuse 20a
• Fuse panel (under left side of dash)
• G28 (on firewall)
• Heated oxygen sensor (ho2s)
• Heated oxygen sensor (ho2s) 2
• Hot at all times
• Ignition switch
• Mass airflow (maf) sensor
• Motronic engine control module (ecm)
• Nca
• Off
• Oxygen sensor (o2s)
• Oxygen sensor (o2s) 2
• Run
• Start
• Starting/charging system

4.0L, Engine Performance Wiring Diagram (2 of 6) for Volkswagen Passat GLS 2004

List of elements for 4.0L, Engine Performance Wiring Diagram (2 of 6) for Volkswagen Passat GLS 2004:

• (behind generator)
• (left front of eng block)
• (left rear of eng block)
• (left rear wheelhouse)
• (next to abs control module)
• (next to air cleaner housing) evaporative emission (evap) canister purge regulator valve
• (rear of left cyl head)
• (rear of right cyl head)
• (right rear of eng block)
• 15a
• Brake booster pressure sensor
• Brake booster relay
• Brake system vacuum pump
• Camshaft adjustment valve 1 (exhaust)
• Camshaft adjustment valve 2 (exhaust)
• Engine coolant temperature (ect) sensor
• Engine speed (rpm) sensor
• G28 (on firewall)
• Knock sensor (ks) 1
• Knock sensor (ks) 2
• Knock sensor (ks) 3
• Knock sensor (ks) 4
• Leak detection pump (ldp)
• Nca
• Red
• Safety fuse 1
• Secondary air injection (air) solenoid valve (near left front of intake manifold)

4.0L, Engine Performance Wiring Diagram (3 of 6) for Volkswagen Passat GLS 2004

List of elements for 4.0L, Engine Performance Wiring Diagram (3 of 6) for Volkswagen Passat GLS 2004:

• (in control module housing)
• 10a
• 29a
• 40a
• 50a
• Auxiliary engine coolant (ec) pump relay
• Auxiliary tank fuel level empty sensor (aux fuel tank)
• Auxiliary tank fuel level sensor (aux fuel tank)
• Computer data lines system
• Coolant pump
• Cooling fans system
• Engine control module (ecm) fuse
• Engine electronics fuse
• Fuel level sensor 2 (in fuel tank)
• Fuel pump (fp) control module (under spare tire)
• Fuse
• Fuse 20a
• Fuse panel (left side of dash)
• G28 (on firewall)
• G78 (lower right "b" pillar)
• Ignition coil terminal 15 fuse
• Injector fuse
• Nca
• Red
• Secondary air pump fuse
• Transfer fuel pump (fp) (aux fuel tank)
• Transfer fuel pump (fp)/fuel gauge sender (aux fuel tank)

4.0L, Engine Performance Wiring Diagram (4 of 6) for Volkswagen Passat GLS 2004

List of elements for 4.0L, Engine Performance Wiring Diagram (4 of 6) for Volkswagen Passat GLS 2004:

• (rear of left cylinder head) camshaft position (cmp) sensor 3
• (rear of left cylinder head) camshaft position (cmp) sensor 4
• (rear of right cylinder head) camshaft position (cmp) sensor
• (rear of right cylinder head) camshaft position (cmp) sensor 2
• (under center of intake manifold) map controlled engine cooling thermostat
• Coil
• G16 (top of valve cover)
• G27 (top of valve cover)
• G28 (on firewall)
• Left electro- hydraulic engine mount solenoid valve
• Nca
• Red
• To spark plug

4.0L, Engine Performance Wiring Diagram (5 of 6) for Volkswagen Passat GLS 2004

List of elements for 4.0L, Engine Performance Wiring Diagram (5 of 6) for Volkswagen Passat GLS 2004:

• (bottom of expansion tank) engine coolant level (ecl) sensor
• (bottom of oil pan) oil level thermal sensor
• (not used)
• Computer data lines system
• Engine coolant level/temperature warning light
• Engine coolant temperature gauge
• Engine oil level indicator light
• Fuel gauge
• Fuse 10a
• Fuse panel (left side of dash)
• G28 (on firewall)
• Hot in run or start
• Instrument cluster
• Malfunction indicator lamp (mil)
• Oil pressure switch
• Oil pressure warning buzzer
• Oil pressure warning light
• Red

4.0L, Engine Performance Wiring Diagram (6 of 6) for Volkswagen Passat GLS 2004

List of elements for 4.0L, Engine Performance Wiring Diagram (6 of 6) for Volkswagen Passat GLS 2004:

• (left rear corner of eng compt)
• (left side of dash) fuse panel
• 28a
• 34a
• 38a
• Battery
• Camshaft adjustment valve 1 (rear of right cyl head)
• Camshaft adjustment valve 2 (rear of left cyl head)
• Computer data lines system
• Cooling fans system
• Cruise control system
• Fuel injectors
• Fuel pump (fp) relay
• Fuse
• Fuse 15a
• Motronic engine control module (ecm)
• Red
• Relay panel (under left side of dash)
• Throttle valve control module (on throttle body)