A6 V6-3.0L (AVK) (2004)
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Unscrew oil pressure switch and install VAG1342 oil pressure tester.
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Thread oil pressure switch -2- into VAG1342 oil pressure tester.
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Connect brown wire -1- of tester to Ground (GND).
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Using VAG1594A connect test kit, connect VAG1527B voltage tester to oil pressure switch and Battery (+).
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LED must not be lit.
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If LED is lit, replace oil pressure switch.
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Start engine.
Note: While starting engine, watch Pressure Tester and LED as oil pressure switch may open during start.
Black oil pressure switch:
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T 1.2 to 1.6 bar pressure, LED must light up.
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If LED does not light up, replace oil pressure switch.
Oil pressure, checking
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Disconnect electrical wire from oil pressure switch.
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Unscrew oil pressure switch and install VAG1342 oil pressure tester.
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Thread oil pressure switch -2- into VAG1342 oil pressure tester.
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Start engine (engine oil temperature approximately 80°C).
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Oil pressure at idle: at least 1.8 bar
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Oil pressure at 2000 RPM: at least 4.0 bar
If specified values are not obtained:
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Pressure relief valve or oil pump faulty, replace oil pump.