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‒ →
Remove 0.3 bar oil pressure switch (brown insulation) and screw into tester.
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‒ Screw tester into cylinder head in place of the oil pressure switch.
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‒ Connect the brown wire from the tester to earth (-).
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‒ Conect LED Test Lamp V.A.G 1527, with auxiliary wires from V.A.G 1594 to the positive pole (+) of the battery and 0.3 bar oil pressure switch (in tester) -A-. The LED should light up.
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‒ Start engine and gradually increase rpm.
At a pressure of 0.15...0.45 bar the LED must go out, otherwise replace oil pressure switch
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‒ Connect the LED Test Lamp With 1.8 bar oil pressure switch (white insulation, on oil filter bracket) -B-
The LED must light up at a pressure of 1.6...2.0 bar, otherwise renew oil pressure switch.
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‒ Increase engine rpm further.
At 2000 rpm and 80 °C oil temperature the oil pressure should be at least 2.0 bar.
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‒ At higher rpm the oil pump cover with pressure must not exceed 7.0 bar.
If necessary, renew oil pump cover with pressure relief valve.
Note:
Checking optical and acoustic oil pressure monitoring.See Assembly Grou:
=> Current flow diagrams, Electrical fault finding and Fitting locations
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