Oil Pressure Sender: Testing and Inspection

Oil Pressure and Oil Pressure Switch, Checking

Special tools, testers and auxiliary items required

• Oil pressure gauge (V.A.G 1342)

• Voltage tester (V.A.G 1527 B)

• Connector test set (V.A.G 1594 C)

Test Conditions

• Oil level OK

• Engine oil temperature approximately 80° C.

Test Sequence

- Activate vehicle lifting mode.

- Loosen quick-release fasteners - 1 - and remove front noise insulation.





- Disconnect electrical harness connector - arrow - from oil pressure switch (F1).





- Remove oil pressure switch.

- Screw adapter (V.A.G 1342/14) into hole for oil pressure switch.

- Connect oil pressure gauge (V.A.G 1342) to adapter (V.A.G 1342/14).





- Screw oil pressure switch - 2 - into oil pressure gauge (V.A.G 1342).

- Place brown wire of oil pressure gauge on Ground (GND).

Oil Pressure Switch, Checking

- Connect voltage tester (V.A.G 1527 B) - 1 - with adapter cables from connector test kit (V.A.G 1594 C) to oil pressure switch and battery positive.

• LED must not light up.

If LED lights up:

- Replace Oil Pressure Switch.

- Start engine.

• While starting engine, watch Pressure Tester and LED as oil pressure switch may open during start.

• The LED must illuminate at 1.2 to 1.6 bar.

If LED does not light up:

- Replace Oil Pressure Switch.

Oil Pressure, Checking

- Start engine.

• Oil pressure at idle: Min. 0.8 bar

• Oil pressure at 2000 RPM: Min. 3.0 bar

• Oil pressure at increased engine speed: max. 7.0 bar

If the specifications are not obtained: Check-valve or oil pump malfunctioning.

- Replace oil pump.

Assembling

Assembly is in reverse order of removal, note the following:

• Replace seal.

- Deactivate vehicle lifting mode.

Tightening Specifications