| Checking oil pressure switch |
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| Unplug electrical connector at oil pressure switch -F1-. |
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| Unscrew oil pressure switch -F1-. |
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| Connect oil pressure tester -V.A.G 1342- with adapter -V.A.G 1342/14- to bore for oil pressure switch. |
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| Screw oil pressure switch -2- into oil pressure tester -V.A.G 1342-. |
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| Connect brown wire -1- of oil pressure tester to earth (“–”). |
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| Connect voltage tester -V.A.G 1527 B- with test leads from auxiliary measuring set -V.A.G 1594 C- to oil pressure switch and battery positive (“+”). |
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| LED should not light up. |
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| Renew oil pressure switch. |
Note | Observe tester and LED while starting, as switching point of oil pressure switch may already be exceeded when starting. |
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| LED should light up at 1.2 ... 1.6 bar. |
| If LED does not light up: |
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| Renew oil pressure switch. |
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| Minimum oil pressure at idling speed: 1.3 bar |
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| Minimum oil pressure at 3500 rpm: 3.5 ... 4.5 bar. |
| The pressure relief valve or oil pump is defective if the specifications are not attained. |
| Installation is carried out in the reverse order; note the following: |
Note | Renew seal for oil pressure switch. |
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