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Engine cooling > < Removing and installing sump

Polo Mk3

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 1527 B-
t  Auxiliary measuring set -V.A.G 1594 C-

  Note
Functional check and repair of the visual and acoustic oil pressure warning: → Current flow diagrams, Electrical fault finding and Fitting locations.
Test sequence:
   
–  Remove oil pressure switch -F1- and screw into oil pressure tester -V.A.G 1342-.
–  Screw oil pressure tester -V.A.G 1342- into oil filter bracket in place of oil pressure switch.
–  Connect brown wire of tester to earth (-).
–  Connect voltage tester -V.A.G 1527 B- to battery positive (+) and oil pressure switch using cables from auxiliary test set -V.A.G 1594 C-. LED must not light up.
–  Start engine and increase speed slowly. At 0.55...0.85 bar the LED must light up, otherwise renew oil pressure switch -F1-.
–  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 speed, oil pressure must not exceed 5.8 bar. Renew oil filter bracket, if necessary
  V17-0540

Engine cooling > < Removing and installing sump