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 A)

• Function test and servicing the optical and acoustic oil pressure indicator.

Conditions

• The engine oil temperature is a minimum of 80 °C (176 °F).

• The engine oil level is OK.

Sequence

- Remove the oil pressure switch. Refer to => [ Oil Pressure Switch F1/Reduced Oil Pressure Switch F378 ] Oil Pressure Switch F1/Reduced Oil Pressure Switch F378.

- Install the oil pressure gauge (V.A.G 1342) in the hole for the oil pressure switch.






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

- Connect the brown wire - 1 - from the oil pressure gauge to ground (-).

- Connect the voltage tester (V.A.G 1527 B) to the oil pressure switch and battery positive (+) using adapter cables from the connector test set (V.A.G 1594 C).

• The Light Emitting Diode (LED) must not light up.

If the LED lights up:

- Replace the oil pressure switch.

- Start the engine.

• While starting the engine, watch the pressure gauge and LED as the oil pressure switch may open during starting.

• At 0.7 to 1.1 bar pressure, the LED must light up.

If the LED does not light up:

- Replace the oil pressure switch.

Oil Pressure, Checking

- Start the engine.

• Oil pressure at idle: minimum 0.8 bar

• Oil pressure at 2000 RPM: minimum 1.5 bar

If the specified values are not obtained: the check-valve or oil pump is malfunctioning.

- Replace the oil pump. Refer to => [ Oil Pump ] Oil Pump.