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Engine cooling > < Removing and installing oil pump

Polo Mk5

Checking oil pressure and oil pressure switch
   
Checking oil pressure and oil pressure switch
Special tools and workshop equipment required
t  Oil pressure tester -V.A.G 1342-
t  Voltage tester -V.A.G 1527B-
t  Auxiliary measuring set -V.A.G 1594C-

  Note
Functional check and repair of the optical and acoustic oil pressure warning: → Current flow diagrams, Electrical fault finding and Fitting locations
Test procedure
   
–  Remove oil pressure switch -F1- and screw into tester.
–  Screw tester into cylinder head in place of oil pressure switch.
–  Connect brown wire of tester to earth (-).
–  Connect voltage tester -V.A.G 1527B- to battery positive (+) and oil pressure switch using cables from auxiliary measuring set -V.A.G 1594C-.
–  If LED lights up, renew oil pressure switch -F1-.
If LED does not light up:
–  Start engine and increase revolutions slowly. At 0.3…0.7 bar the LED must light up, otherwise renew oil pressure switch.
–  Increase engine speed further. At 2000 rpm and an oil temperature of 80 °C the oil pressure should be at least 2.0 bar.
At higher engine speeds, the oil pressure must not exceed 7.0 bar.
  V17-0540

Engine cooling > < Removing and installing oil pump