Test sequence
WARNING: This page is about a different car, the 1999 Volkswagen Jetta, 1998 Volkswagen Jetta, 1997 Volkswagen Jetta, 1996 Volkswagen Passat, and 1996 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.
- Remove 0.3 bar oil pressure switch -F22 - (blue insulation) and install in VAG1342 oil pressure gauge.
- Connect line from VAG1342 oil pressure gauge in place of 0.3 bar oil pressure switch -F22-.
- Connect brown wire from oil pressure gauge to Ground.
- Connect VAG1527B voltage tester to battery positive voltage (B+) and 0.3 bar oil pressure switch -A- (installed in oil pressure gauge) using adapters from VW1594 connector test kit.
- Voltage tester LED must light up
- Start engine and increase RPM slowly to 0.15 - 0.45 bar (2.2 -6.5 psi).
- Voltage tester LED must go out
If NO:
- Replace 0.3 bar oil pressure switch -F22 -.
- Connect VAG1527B voltage tester to 0.9 bar oil pressure switch -F1- (grey insulation) on oil filter mounting bracket -B-. Increase RPM slowly to 0.75-1.05 bar (10.9-15.2 psi)
- LED must light up
If NO:
- Replace oil pressure switch -F1-.
- Increase engine speed further and check engine oil pressure:
- At 2000 RPM and 80 C (176 F) oil temperature, oil pressure must be min. 2.0 bar (29 psi)
- At higher RPM, oil pressure must not exceed 7.0 bar (101 psi).
If NO:
- Replace oil pump cover with pressure relief valve.