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| Connect oil pressure tester -V.A.G 1342- to hole for oil pressure switch. |
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| Screw oil pressure switch -F1--item 2- into hole in oil pressure tester. |
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| Connect brown line -1- of oil pressure tester to earth (–). |
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| Connect voltage tester -V.A.G 1527B- to battery positive (+) and oil pressure switch -F1- using auxiliary cable from auxiliary measuring set -V.A.G 1594C-. |
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| LED should not light up. |
Note If LED lights up now, renew oil pressure switch -F1-. |
Note Observe the oil pressure tester and LED while starting, since the switching point of the oil pressure switch may already be exceeded when starting. |
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| LED should light up at 0.3…0.6 bar. |
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| If LED does not light up, replace oil pressure switch -F1- → Chapter. |
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