A4 Cabriolet L4-1.8L Turbo (AMB) (2005)
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Remove engine cover (arrows).
Checking internal resistance
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Disconnect harness connector at the fuel injector to be tested.
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Connect multimeter at valve for resistance measurement.
Specified value: 12 to 13 Ohms (at room temperature)
With an engine at operating temperature, the resistance increases by approx. 4 to 6 Ohms.
If specified value is not obtained:
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Replace fuel injector.
If specified value is obtained:
Checking voltage supply
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Connect e.g. V.A.G 1527 B voltage tester as follows:
Harness connector Terminal
Measure to
1
Engine Ground (GND)
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Operate starter briefly.
