Beetle L4-2.0L (AEG) (2000)
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Connect VAG 1527B Voltage tester between terminals 1 + 4 (ignition output 1), and terminals 3 + 4 (ignition output 2) of harness connector using
jumper wires from VW 1594.
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Operate starter and check ignition signal from ECM.
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LED must flicker
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Switch OFF ignition.
If LED flickers and there is voltage between terminals 2 + 4:
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Replace ignition coils N, N128.
If LED does not flicker
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Check wiring
Wiring, checking
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Connect VAG 1598/22 Test Box to ECM harness connector.