Audi Workshop Service and Repair Manuals

Special tools, workshop equipment, test and measuring appliances and auxiliary items required

• ◆ V.A.G 1342 Oil pressure tester
• ◆ V.A.G 1527 B Diode test lamp
• ◆ V.A.G 1594 A Adapter set

Test conditions

• ● Engine oil level OK, checking
• ● Engine oil temperature at least 80 °C (radiator fan must have run once)

Note:

Functional check and servicing the optical and acoustic oil pressure warning:

=> Current flow diagrams, Electrical fault finding and Fitting locations

Test sequence

• ‒ → Remove oil pressure switch (F1) and screw into tester.
• ‒ Screw tester into the cylinder head in place of the oil pressure switch.
• ‒ Connect brown wire of tester to earth (-).
• ‒ Connect diode test lamp V.A.G 1527 B using auxiliary cables from V.A.G 1594 A to battery positive (+) and oil pressure switch.
      LED must not light up.

• ‒ If the LED lights up, renew oil pressure switch (F1) .

If the LED does not light up:

• ‒ Start engine and increase speed slowly.
  At
      0.3...0.6 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 at least 2.0 bar.

At higher engine speed the oil pressure must not exceed 7.0 bar.