Jetta L4-2.0L (AZG) (2004)
If specified value is not obtained:
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Replace malfunctioning fuel injector, item 7.
Note the following when installing the fuel injectors:
Replace O-rings on all fuel injectors and wet them slightly with clean motor oil.
Insert fuel injectors into fuel rail perpendicular and in the right position, and secure them with retaining clips.
Position fuel distributor on lower part of intake manifold using secured fuel injectors and apply uniform pressure to press it in.
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 AEG
Connect diode test lamp to connector of fuel injector to be tested terminal 1 and Ground (GND).
Vehicles with engine code AVH, AZG
Connect diode test lamp to connector of fuel injector to be tested terminal 1 and Ground (GND).
Continuation for all vehicles
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Operate starter and test voltage supply for fuel injector. LED must light up.
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Switch ignition off.
If LED does not light up:
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Check wire between 2-pin connector terminal 1 and the Fuel Pump (FP) Relay -J17- for open circuit according to wiring diagram. Wire resistance:
max: 1.5 Ohms
Activation and voltage supply, checking
Vehicles with engine code AEG