Golf GL L4-2.0L (AZG) (2001)
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Connect diode test lamp to connector of tested fuel injector terminal 1 and Ground (GND).
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Switch on starter and test voltage supply for fuel injector.
LED must light up.
If LED does not light up:
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Switch ignition off.
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Check wire between 2-pin connector terminal 1 and Fuel Pump (FP) relay -J17- for open circuit according to wiring diagram.
Wire resistance: max: 1.5 Ohms
Activation and voltage supply, checking
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Disconnect fuel injector connectors.
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Use adapter cables from the VAG1594 connector test kit to connect VAG1527 diode test lamp to the connector terminals of the fuel injector to be
tested.
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Switch on starter and test activation of fuel injector.
LED should flicker.
If LED does not flicker:
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Switch ignition off.
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Remove wiper arms and wind cowl
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Connect VAG1598/31 test box to control module wiring harness. Engine Control Module (ECM) is not connected.