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Checking oil pressure and oil pressure switch (2-pin oil pressure switch) > < Removing and installing oil pressure switchF1

Golf Mk5

Checking oil pressure and oil pressure switch (single pin oil pressure switch)
Checking oil pressure and oil pressure switch (single pin oil pressure switch)
  Note
Single pin and 2-pin oil pressure switches have been installed. Check which type of oil pressure switch has been installed. Checking oil pressure and oil pressure switch (2-pin oil pressure switch) → Chapter.
   
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 1594C-

l  Engine oil level OK.
l  Engine oil temperature at least 80 °C (radiator fan must have run once)
  Note
Functional check and repair of the optical and acoustic oil pressure display: Current flow diagrams → Vehicle diagnostic tester.
   
–  Remove oil pressure switch -F1- → Chapter and screw it into tester.
–  Screw tester 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 measuring set -V.A.G 1594C-. LED must not light up.
–  If the LED lights up, renew 1.4 bar oil pressure switch -F1-.
If LED does not light up:
–  Start engine and increase engine speed. At 1.2…1.6 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 between 2.7…4.5 bar.
At higher engine speeds, the oil pressure must not exceed 7.0 bar.
If specification is not attained:
–  Check strainer in oil suction pipe for contamination/soiling → Item.
  Note
Mechanical damage, e.g. to bearings, could also be the cause for oil pressure being too low.
If no fault is found:
–  Renew oil pump and balancer shaft gear assembly → Chapter.
If the specification is exceeded:
–  Check oil channels.
–  If necessary, renew oil filter bracket with pressure relief valve.
  V17-0540

Checking oil pressure and oil pressure switch (2-pin oil pressure switch) > < Removing and installing oil pressure switchF1