Engine Oil Pressure: Testing and Inspection

Oil Pressure and Oil Pressure Switch, Checking

Special tools, testers and auxiliary items required

• Oil Pressure Gauge (V.A.G 1342) with adapter (V.A.G 1342/14)

• Voltage Tester (V.A.G 1527B)

• Connector Test Set (V.A.G 1594C)

Procedure

• Oil level OK

• Engine oil temperature approximately 80° C.

- Remove Oil Pressure Switch (F1). Refer to => [ Oil Pressure Switch ] Service and Repair.





- Connect Oil Pressure Gauge (V.A.G 1342) with Adapter (V.A.G 1342/14) to hole for oil pressure switch.

- Install 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 1527B) using adapter cables from Connector Test Kit (V.A.G 1594C) to oil pressure switch and battery plus.

• 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: at least 1.5 bar.

• Oil pressure at 2000 RPM: at least 3.5 bar.

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

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

Assembling

- Install Oil Pressure Switch (F1). Refer to => [ Oil Pressure Switch ] Service and Repair.