Test Sequence

WARNING: This page is about a different car, the 2013 Volkswagen Beetle. However, it is still accessible from the selected car via links, so may be relevant.

Tightening specification, refer to OIL FILTER HOUSING/ACCESSORY BRACKET OVERVIEW .

-- Disconnect the connector from the oil pressure switch.

-- Remove the oil pressure switch -2- using the socket 24 mm and jointed extension T40175 and install it in the oil pressure gauge V.A.G 1342.

Fig 1: Connecting Oil Pressure Gauge V.A.G 1342 To Adapter V.A.G 1342/14

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Install the oil pressure gauge V.A.G 1342 in place of the oil pressure switch into the bracket.

-- Connect the brown wire -1- from tester to ground.

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

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

If the LED lights up:

-- Replace the oil pressure switch.

If the LED does not light up:

-- Start the engine and slowly increase the engine speed:

The LED must light up at 1.2 to 1.6 bar positive pressure, otherwise replace the oil pressure switch.

-- Increase the engine speed further:

At 2000 RPM and an oil temperature of 80°C (140°F), the oil pressure should be between 2.7 bar and 4.5 bar.

At higher engine speeds the oil pressure must not exceed 7.0 bar

If the specification is not obtained:

-- Make sure the strainer inside the oil intake pipe is not contaminated.

NOTE: Also, mechanical damage, for example, bearing damage can also be the cause of too low oil pressure.

If no malfunction can be found:

-- Replace the oil pump. Refer to OIL PUMP .

If the specification is exceeded:

-- Check the oil passages.