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| Remove oil pressure switch -F1- and screw into oil pressure tester -V.A.G 1342-. |
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| Screw oil pressure tester -V.A.G 1342- into oil filter bracket instead of oil pressure switch -F1-. |
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| Connect brown wire of oil pressure tester -V.A.G 1342- to earth (-). |
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| Connect voltage tester -V.A.G 1527B- to battery positive (+) and oil pressure switch using cables from auxiliary measuring set -V.A.G 1594 A- or auxiliary measuring set -V.A.G 1594C-. LED must not light up. |
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| If the LED lights up, renew 1.4 bar oil pressure switch -F1-. |
| If LED does not light up: |
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| Start engine and raise engine speed. At 1.2..1.6 bar, LED must light up. Otherwise renew oil pressure switch. |
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| Increase engine speed further. At 2000 rpm and oil temperature of 80°, oil pressure should be between 2.7 and 4.5 bar. |
| At higher engine speeds, oil pressure must not exceed 7.0 bar. |
| If specification is not attained: |
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| Mechanical damage. e.g. bearing damage. |
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| Check plug O-ring for damage → Item. |
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| Renew oil filter bracket with pressure relief valve → Item or oil pump with balancer shaft gear assembly → Item. |
| If the specification is exceeded: |
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| If necessary, replace oil filter bracket with pressure relief valve → Item. |
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Note