ENGINE PERFORMANCE – Volkswagen Jetta GL 2000 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

1.8L

1.8L Turbo, Engine Performance Wiring Diagrams (1 of 3) for Volkswagen Jetta GL 2000

List of elements for 1.8L Turbo, Engine Performance Wiring Diagrams (1 of 3) for Volkswagen Jetta GL 2000:

• (not used)
• (pins 10-20 not used)
• (pins 22-24 not used)
• (pins 6-8 not used)
• A/c system
• Accel pedal position sensors 1 & 2 (in pedal assembly)
• Computer data lines system
• Cooling fans system
• Cruise control system
• Evaporative emission canister purge regulator valve
• Fuel pump relay
• Fuse 15a
• Fuse 50a
• Fuse panel
• Fuse/ red bracket battery
• G200 (left side of steer- ing column)
• Heated oxygen sensor (ho2s)
• Hot at all times
• Hot in run or start
• Ignition switch
• Leak detection pump
• Lock
• Mass airflow sensor
• Motronic engine control module (in protective box, in left rear corner of engine compartment)
• Oxygen sensor (o2s) (behind catalytic converter)
• Red
• Relay panel
• Run
• Start
• Starting/ charging system

1.8L Turbo, Engine Performance Wiring Diagrams (2 of 3) for Volkswagen Jetta GL 2000

List of elements for 1.8L Turbo, Engine Performance Wiring Diagrams (2 of 3) for Volkswagen Jetta GL 2000:

• (left side of steer- ing column)
• Electronic power control fault light
• Engine speed (rpm) sensor
• Fuel pump
• Fuse 10a
• Fuse 15a
• Fuse 50a
• Fuse panel
• Fuse/ bracket battery
• G200
• Hot at all times
• Instrument cluster
• Knock sensor 1
• Knock sensor 2
• Malfunction indicator lamp
• Nca
• Power steering pressure switch
• Red
• Secondary air injection pump motor
• Secondary air injection pump relay (in left side of engine compt)
• Secondary air injection solenoid valve
• T32
• T32a

1.8L Turbo, Engine Performance Wiring Diagrams (3 of 3) for Volkswagen Jetta GL 2000

List of elements for 1.8L Turbo, Engine Performance Wiring Diagrams (3 of 3) for Volkswagen Jetta GL 2000:

• Brake- light switch
• Camshaft position sensor
• Charge air pressure sensor
• Clutch vacuum vent valve switch
• Cruise control system
• Engine coolant temperature sensor
• Fuel injectors
• Fuse 10a
• Fuse 7.5a
• Fuse panel (behind left side of dash)
• G115 (on cylinder head)
• Hot at all times
• Ignition coils
• Intake air temperature
• Motronic engine control module (in protective box, in left rear corner of engine compt)
• Nca
• Not used
• Throttle valve control module
• To spark plug
• Turbocharger recirculating valve
• Wastegate bypass regu- lator valve

1.9L

1.9L Turbo Diesel, Engine Performance Wiring Diagrams (1 of 3) for Volkswagen Jetta GL 2000

List of elements for 1.9L Turbo Diesel, Engine Performance Wiring Diagrams (1 of 3) for Volkswagen Jetta GL 2000:

• (not used)
• (w/a/t)
• (w/m/t)
• Abs system
• Cooling fans system
• Cruise control system
• Diesel direct fuel injection (dfi) engine control module (ecm) (at base of windshield, in center of plenum)
• Egr vacuum regulator solenoid valve (on center of firewall)
• Fuse 10a
• Fuse 110a
• Fuse 30a
• Fuse bracket
• Fuse panel
• G121 (center of firewall)
• Generator
• Hot at all times
• Hot in run or start
• Manifold absolute pressure (map) sensor & intake air temperature (iat) sensor (in air intake duct)
• Mass airflow (maf) sensor (right side of air cleaner housing)
• Red
• Relay panel
• Throttle position (tp) sensor/ closed throttle position (ctp) switch/kickdown switch (above accelerator pedal)
• Transmissions system

1.9L Turbo Diesel, Engine Performance Wiring Diagrams (2 of 3) for Volkswagen Jetta GL 2000

List of elements for 1.9L Turbo Diesel, Engine Performance Wiring Diagrams (2 of 3) for Volkswagen Jetta GL 2000:

• Brakelight switch/ brake vacuum vent valve switch (above brake pedal)
• Clutch vacuum vent valve switch (w/m/t) (above clutch pedal)
• Coolant glow plugs (m/t only)
• Coolant preheating relay (high heat output) (w/m/t) (left rear corner of engine compartment)
• Coolant preheating relay (low heat output) (w/m/t) (left rear corner of engine compartment)
• Engine glow plugs
• Fuse 10a
• Fuse 50a
• Fuse bracket
• Fuse panel
• G121 (center of firewall)
• G202 (beside steering column)
• Glow plug relay (on thirteen- fold auxiliary relay panel)
• Hot at all times
• Intake manifold flap changeover valve (on intake manifold)
• Positive crankcase ventilation (pcv) heating element (between cylinder head cover & intake air duct, in pcv hose)
• Red

1.9L Turbo Diesel, Engine Performance Wiring Diagrams (3 of 3) for Volkswagen Jetta GL 2000

List of elements for 1.9L Turbo Diesel, Engine Performance Wiring Diagrams (3 of 3) for Volkswagen Jetta GL 2000:

• (under left side of dash) data link connector (dlc)
• (w/m/t)
• Abs system
• Cold start injector (at left side of engine, on bottom of diesel direct fuel injection pump)
• Data bus onboard diagnostic interface
• Diesel direct fuel injection (dfi) engine control module (ecm) (at base of windshield, in center of plenum)
• Engine coolant temperature (ect) sensor (on cylinder head)
• Engine speed (rpm) sensor (left side of engine block)
• Fuel cut- off valve (at left side of engine, on top of diesel direct fuel injection pump)
• Fuel temperature sensor/modulating piston displacement sensor/quantity adjuster (at left side of engine, on front of diesel dfi pump)
• Fuse 5a
• Fuse panel
• Glow plug ind
• Hot in run
• Instrument cluster
• Malfunction indicator lamp (mil)
• Nca
• Needle lift sensor (left side of cylinder head)
• T32
• T32a
• Transmissions system (w/a/t)
• Wastegate bypass regulator valve (left rear side of engine compt)

2.0L

2.0L, Engine Performance Wiring Diagrams (1 of 3) for Volkswagen Jetta GL 2000

List of elements for 2.0L, Engine Performance Wiring Diagrams (1 of 3) for Volkswagen Jetta GL 2000:

• (at right of air cleaner housing, in intake air duct)
• (center of firewall)
• (not used)
• Air conditioning system
• Evaporative emission (evap) canister purge regulator valve (next to engine coolant reservoir)
• Fuse 15a
• Fuse panel
• G121
• Heated oxygen sensor (ho2s) (ahead of 3-way catalytic converter)
• Hot at all times
• Instrument cluster
• Leak detection pump (in right rear wheelhousing)
• Malfunction indicator light (mil)
• Mass airflow (maf) sensor & intake air temperature (iat) sensor
• Motronic engine control module (ecm) (at base of windshield, in center plenum)
• Oxygen sensor (o2s) (at back of 3-way catalytic converter)
• Secondary air injection (air) solenoid valve (above brake fluid reservoir)
• T10
• T10w
• T32
• T32a
• Transmission controls system

2.0L, Engine Performance Wiring Diagrams (2 of 3) for Volkswagen Jetta GL 2000

List of elements for 2.0L, Engine Performance Wiring Diagrams (2 of 3) for Volkswagen Jetta GL 2000:

• (center of firewall) g121
• (right side of firewall) g123
• Data link connector (dlc) (under left side of dash)
• Engine speed (rpm) sensor (left side of of engine)
• Fuel pump
• Fuel pump relay
• Fuse 15a
• Fuse 28 15a
• Fuse 32 10a
• Fuse 34 10a
• Fuse 43 10a
• Fuse 50a
• Fuse bracket
• Fuse panel
• G202 (behind left side of dash)
• Hot at all times
• Hot in run or start
• Ignition switch
• Knock sensor (ks) 1 (left front side of engine)
• Knock sensor (ks) 2 (left side of engine, behind ignition coil)
• Nca
• Off
• Positive crankcase ventilation (pvc) heating element (between cylinder head cover & intake air duct)
• Red
• Relay panel
• Run
• S3/3
• S3/6
• Secondary air injection (air) pump relay (at left side of engine compt, behind air cleaner housing)
• Secondary air injection pump motor (left rear side of engine)
• Start

2.0L, Engine Performance Wiring Diagrams (3 of 3) for Volkswagen Jetta GL 2000

List of elements for 2.0L, Engine Performance Wiring Diagrams (3 of 3) for Volkswagen Jetta GL 2000:

• 2 (or 4)
• Abs control module
• Brake- light switch (above brake pedal)
• Camshaft position (cmp) sensor (on cylinder head)
• Data bus on board diagnostic interface
• Engine coolant temperature (ect) sensor (on cylinder head, in coolant flange)
• Fuel injectors
• Fuse 10a
• Fuse panel
• G121 (center of firewall)
• Hot at all times
• Ignition coil
• Instrument cluster
• Motronic engine control module (ecm) (at base of windshield, in center plenum)
• Nca
• T25
• T32a
• T68
• Throttle valve control module (on throttle body)
• To spark plugs
• Transmission control module
• W/ cruise
• W/o cruise

2.8L

2.8L, Engine Performance Wiring Diagrams (1 of 3) for Volkswagen Jetta GL 2000

List of elements for 2.8L, Engine Performance Wiring Diagrams (1 of 3) for Volkswagen Jetta GL 2000:

• (not used)
• (pins 6-24 not used)
• A/c system
• Abs system, transmissions system, instrument cluster system
• Accelerator pedal position sensors 1 & 2 (in pedal assembly)
• Cruise control system
• Evaporative emission (evap) canister purge regulator valve (next to eng coolant reservoir)
• Fuel pump relay
• Fuse 15a
• Fuse 50a
• Fuse bracket
• Fuse panel
• G121 (center of firewall)
• Heated oxygen sensor (ho2s) (ahead of three way catalytic converter)
• Hot at all times
• Ignition switch
• Leak detection pump (ldp) (inside right rear wheelhousing)
• Mass airflow (maf) sensor & intake air temperature (iat) sensor (between air cleaner housing & throttle body)
• Motronic engine control module (ecm) (at base of windshield, in center of plenum)
• Nca
• Off
• Oxygen sensor (o2s) (back of three-way catalytic converter)
• Red
• Relay panel
• Run
• S3/1
• S3/2
• S3/3
• S3/5
• S3/6
• Start
• Starting/ charging system

2.8L, Engine Performance Wiring Diagrams (2 of 3) for Volkswagen Jetta GL 2000

List of elements for 2.8L, Engine Performance Wiring Diagrams (2 of 3) for Volkswagen Jetta GL 2000:

• (beside steering column) g202
• (mil)
• Air bag control module
• Data link connector
• Engine speed (rpm) sensor (lower left rear rear eng, near transmission flange)
• Fuel pump (in fuel tank)
• Fuse 10a
• Fuse panel
• G123 (right side of firewall)
• Instrument cluster
• Knock sensor (ks) 1 (on lower right side of eng, below exhaust manifold)
• Knock sensor (ks) 2 (on lower left side of engine, above oil cooler)
• Malfunction indicator lamp
• Nca
• Red
• Secondary air injection (air) pump motor (left side of engine, near generator)
• Secondary air injection (air) pump relay (left side of eng compt, behind air cleaner housing)
• Secondary air injection (air) solenoid valve (left side of eng, behind air cleaner housing)
• T32/11
• T32/21
• T32/25
• T32/3
• T32a/5

2.8L, Engine Performance Wiring Diagrams (3 of 3) for Volkswagen Jetta GL 2000

List of elements for 2.8L, Engine Performance Wiring Diagrams (3 of 3) for Volkswagen Jetta GL 2000:

• (between cylinder head cover & intake air duct, in pcv hose) positive crankcase ventilation (pcv) heating element
• (center of firewall)
• (center of firewall) g121
• (left rear of cylinder head, in coolant flange) engine coolant temperature (ect) sensor
• (left side of eng, above oil filter housing)
• (not used)
• Brake booster vacuum valve
• Brake- light switch (above brake pedal)
• Camshaft position (cmp) sensor (on rear of cylinder head, behind ignition coil)
• Clutch vacuum vent valve switch (above clutch pedal)
• Cruise control system
• Fuel injectors
• Fuse 10a
• Fuse 7.5a
• Fuse panel
• G121
• Hot at all times
• Ignition coil (rear of cylinder head)
• Intake manifold change-over valve
• Motronic engine control module (ecm) (at base of windshield, in center of plenum)
• Nca
• Spark plugs
• Throttle valve control module (on throttle body)