Oil pressure and oil pressure switch, checking
WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 2006 Volkswagen GTI, 2005 Volkswagen Jetta, 2005 Volkswagen GTI, 2004 Volkswagen Jetta, and 2004 Volkswagen GTI. However, it is still accessible from the selected car via links, so may be relevant.
Special tools, testers and auxiliary items required
- Oil pressure gauge V.A.G 1342
- Voltage tester V.A.G 1527 B
- Connector test set V.A.G 1594 C
Test conditions:
- Engine oil level OK, checking Markings on oil dipstick under Lubrication system components, assembly overview .
- Engine oil temperature at least 80 ° C (radiator fan must start up once)
NOTE:
- Function test and servicing the optical and acoustic oil pressure indicator:, refer to Electrical Wiring Diagrams, Troubleshooting and Component Locations
Test sequence:
- Remove oil pressure switch F1 and install into oil pressure gauge.
- Install oil pressure gauge V.A.G 1342 into oil filter bracket in place of oil pressure switch.
- Connect brown wire of tester to Ground (GND).
- Connect voltage tester V.A.G 1527 B using adapter cables from connector test kit V.A.G 1594 C to B+ and oil pressure switch. LED must not light up.
- If LED lights up, replace 1.4 bar Oil Pressure Tester V.A.G 1342.
If LED does not light up:
- Start engine and let run at idle: LED must light up at 1.2 to 1.6 bar positive pressure, otherwise replace oil pressure switch.
- Check oil pressure at different speeds:
2000 RPM: 2.7 to 4.5 bar
Above 2000 RPM: maximum 7.0 bar
If specifications are not obtained:
- Correct mechanical damage, e.g. bearing damage.
- Replace oil filter bracket with pressure relief valve or oil pump.
At higher engine speeds oil pressure must not exceed 7.0 bar
If specification is exceeded:
- Check oil channels.
- If necessary, replace oil filter bracket with pressure relief valve.