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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17-33
Check oil pressure
- Disconnect wire from oil pressure switch.
If specified values are not attained: - Remove oil pressure switch and screw in oil pressure tester VAG 1342.
- Thread oil pressure switch -2- intoVAG 1342.
-
Start engine (engine oil temperature approx. 80 C).
Oil pressure at idling speed: at least 1.3 bar Oil pressure at 2000 rpm: 3.5 to 4.5 bar
- Pressure relief valve or oil pump faulty, replace oil pump Page 17
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