Work sequence

WARNING: This page is about a different car, the 2006 Volkswagen Golf, 2005 Volkswagen Jetta, 2005 Volkswagen Golf, 2004 Volkswagen Jetta, and 2004 Volkswagen Golf. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying V.A.G 1342 Oil Pressure Tester

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove Oil pressure switch -F1- and screw into tester.
Screw tester into oil filter bracket in place of oil pressure switch.
Connect brown wire of tester to ground (-).
Connect diode test lamp V.A.G 1527 B using auxiliary cables V.A.G 1594 A to battery positive (+) and oil pressure switch. LED must not light up.
Start engine and increase speed slowly.

Oil pressure switch, brown:

At 0.55 to 0.85 bar LED must light up; otherwise replace oil pressure switch.
Increase engine speed further. At 2000 rpm and an oil temperature of 80 ° C oil pressure should be at least 2.0 bar.

For higher engine speeds the oil pressure must not exceed 7.0 bar. If necessary replace the oil filter bracket.

Oil pressure switch, gray:

At 0.75 to 1.05 bar LED must light up; otherwise replace oil pressure switch.
Increase engine speed further. At 2000 rpm and an oil temperature of 80 ° C oil pressure should be at least 2.0 bar.

For higher engine speeds the oil pressure must not exceed 7.0 bar. If necessary replace oil filter bracket.