battery AUDI A4 1998 B5 / 1.G AWM Engine Lubrication System Components Workshop Manual

17-32

- Connect voltage tester VAG 1527 B to oil
pressure switch and positive side of battery (+)
using test leads from VAG 1594 A.

Test lamp should not light up.

- If test lamp lights up, install new oil pressure
switch.

- Start engine.

Note:
The switching point of the oil pressure switch can
be reached when the engine is cranked on the
starter motor, so watch the tester and the test
lamp while starting the engine.

Black oil pressure switch:
LED must light up at 1.2 to 1.6 bar.

- If test lamp does not light up, install new oil
pressure switch.
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