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| Connect voltage tester -V.A.G 1527B- with cables from auxiliary measuring set -V.A.G 1594C- to battery positive (+) (connection in engine compartment -arrow-) and oil pressure switch. |
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| Renew oil pressure switch -F1- → Item. |
If LED does not light up: |
Note Observe tester and LED while starting, as switching point of oil pressure switch may already be exceeded when starting. |
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| Start engine and run at idling speed. |
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| At 0.7…1.1 bar the LED must light up; otherwise renew oil pressure switch -F1- → Item. |
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