GTI V6-2.8L (AFP) (1999)
Checking activation and voltage supply
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Connect VAG1527B voltage tester to harness connector terminals of fuel injector to be tested using cables from VW1594.
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Operate starter and check activation of fuel injector.
The LED must flicker
If the LED does not flicker:
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Switch ignition off.
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Remove wiper arms and plenum chamber cover.
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Connect VAG1598/31 testbox to Engine Control Module (ECM) wiring harness. Engine Control Module (ECM) is not connected by this action.