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Engine oil > < Removing and installing oil pressure switchF1

A4 Mk2

Checking oil pressure
   
Checking oil pressure
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-

Procedure
l  Oil level OK
l  Engine oil temperature approx. 80 °C
–  Remove oil pressure switch -F1- → Chapter.
–  Connect oil pressure tester -V.A.G 1342- to threaded hole for oil pressure switch.
   
–  Screw oil pressure switch -2- into oil pressure tester -V.A.G 1342-.
Checking oil pressure switch
–  Connect brown wire -1- of oil pressure tester to earth (–).
–  Connect voltage tester -V.A.G 1527B- with test leads from auxiliary measuring set -V.A.G 1594C- to oil pressure switch and battery positive (+).
l  LED should not light up.
If LED lights up now:
–  Renew oil pressure switch.
–  Start engine.
  Note
Observe tester and LED while starting, as switching point of oil pressure switch may already be exceeded when starting.
l  LED should light up at 0.7 ... 1.1 bar.
If LED does not light up:
–  Renew oil pressure switch.
Checking oil pressure
–  Start engine.
l  Minimum oil pressure at idling speed: 1.8 bar
l  Minimum oil pressure at 2000 rpm: 4.0 bar
Assembling
–  Install oil pressure switch -F1- → Chapter.
  A17-0025

Engine oil > < Removing and installing oil pressure switchF1