Jetta GLS VR6 V6-2.8L (AFP) (2001)
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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:
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Vehicles with engine code AFP, item 12,
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Vehicles with engine code BDF, item 7.
Note the following when installing the fuel injectors:
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Replace O-rings on all fuel injectors and wet them slightly with clean motor oil.
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Insert fuel injectors into fuel rail perpendicular and in the right position, and secure them with retaining clips.
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Position fuel distributor with secured fuel injectors and apply uniform pressure to press it in.
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The connectors must audibly engage on valves when attached.
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Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data.
See: Computers and Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/With Generic Scan Tool/Diagnostic Mode 4:
Reset/Erase Diagnostic Data
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Generate readiness code.
See: Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
Checking voltage supply
Vehicles with engine code AFP
