Oil Pressure and Oil Pressure Switch, Checking (2-Pin Oil Pressure Switch)

Oil Pressure and Oil Pressure Switch, Checking (2-Pin Oil Pressure Switch)

• 1-pin and 2-pin oil pressure switches are installed. Check which oil pressure switch is installed. Check the oil pressure and oil pressure switch (1-pin oil pressure switch). Refer to => [ Oil Pressure and Oil Pressure Switch, Checking (1-Pin Oil Pressure Switch) ] Oil Pressure and Oil Pressure Switch, Checking (1-Pin Oil Pressure Switch).

Special tools, testers and auxiliary items required

• Oil Pressure Gauge (V.A.G 1342)

• Test Adapter F/VAS 5051 DSO (2 Pin) (VAS 5256)

• Hand-Held Multimeter (V.A.G 1526D)

Procedure

• Engine oil level OK.

• Engine oil temperature at least 80 °C (176 °F) (radiator fan must start up once).

• Function test and servicing the optical and acoustic oil pressure indicator: Wiring diagrams, refer to "Function and Component Selection".

- Remove the oil pressure switch (F1). Refer to => [ Oil Pressure Switch (F1) ] Service and Repair and screw it into the (V.A.G 1342).






- Screw (V.A.G 1342) into the oil filter bracket in place of the oil pressure switch.

- Attach the (VAS 5256) to the oil pressure switch.

- Connect the (V.A.G 1526D) to the (VAS 5256) and set it for the continuity test.

• The oil pressure switch must be open at less than 1.2 bar.



- Start engine and increase engine speed: The oil pressure switch must close at 1.2 to 1.6 bar. Replace the oil pressure switch if it does not.

- Increase engine speed further. At 2000 RPM and an oil temperature of 80 °C (176 °F), the oil pressure must be between 2.7 and 4.5 bar.

At higher engine speeds oil pressure must not exceed 7.0 bar