Audi AMB Service Manual page 194

ENGINE 1.8 Liter 4-Cyl. 5V Turbo Engine Mechanical, Engine Code(s): AMB
Fig. 263: Identifying Special Tools - Oil Pressure And Oil Pressure Switch, Checking
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Special tools, testers and auxiliary items required
Oil pressure tester VAG1342
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Voltage tester VAG1527B
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Connector test set VAG1594A
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Requirements
Oil level OK
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Engine oil temperature approx. 80 °C.
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Oil pressure warning lamp K3 must come on when ignition is switched on.
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In vehicles with auto-check system, lamp must light up to indicate "OK" status (interrogate symbol).
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Checking oil pressure switch
Disconnect wire from oil pressure switch.
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Fig. 264: Connecting Oil Pressure Tester V.A.G 1342 With Adapter V.A.G 1342/14 To Bore For Oil
Pressure Switch
Courtesy of VOLKSWAGEN UNITED STATES, INC.
Remove oil pressure switch and screw into oil pressure tester VAG1342.
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Screw oil pressure switch - 2 - into VAG1342.
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Connect brown wire - 1 - of tester to Ground (-).
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Connect voltage tester VAG1527B to oil pressure switch and positive terminal of battery (+) using test
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leads from VAG1594A.
LED should not light up
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If LED lights up:
2005 Audi A4 Quattro
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