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

Special tools and workshop equipment 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).

-- Remove the oil pressure switch -F1-. Refer to Oil Pressure Switch -F1-  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