Jetta Sedan V6-2.8L (BDF) (2003)
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The respective fuses of fuel injectors (Cylinder 1 Fuel Injector -N30- to Cylinder 4 Fuel Injector -N33-, Cylinder 5 Fuel Injector -N83-, Cylinder 6
Fuel Injector -N84-) must be OK.
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Fuel Pump (FP) Relay -J17- must be OK, check.
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Battery voltage must be at least 11.5 volts.
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All electrical consumers like, for example, lights and rear window heating must be switched off.
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Parking brake must be engaged or else daylight driving lights will be switched on.
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For vehicles with automatic transmission, selector lever must be in position -P- or -N-.
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If vehicle is equipped with an A/C system, it must be switched off.
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Ground (GND) connections between engine and chassis must be OK.
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Engine speed (RPM) sensor must be OK, checking.
See: Computers and Control Systems/Engine Speed Sensor/Testing and Inspection
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Ignition switched off.
Test sequence
Vehicles with engine code AFP
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Remove intake manifold upper part, item 2 .
NOTE: Seal the intake channels in intake manifold lower part and in cylinder head using a clean rag.
Vehicles with engine code BDF
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Remove intake manifold.
NOTE: Seal the intake channels in intake manifold and in cylinder head using a clean rag.
Continuation for all vehicles
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Disconnect fuel injector connectors.
Resistance of fuel injectors, checking
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Test resistance of fuel injectors between terminals.
Specified value: 13.0...19.0 Ohm
NOTE: Resistance value is valid at approx. 20 degree C, At higher temperatures, resistance value increases.
If specified value is not obtained:
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Replace faulty fuel injector: