Component Tests and General Diagnostics

Component Notes And Information

NOTE: During service procedures, refer to the illustration above and the information below.

1 Gasket
- Replace
- Note installed position
- Oil before installing
2 Oil pressure switch (0.3 bar) -F22-
- Tighten to: 20 Nm (15 ft lb)
- Brown body
- Blue/black wiring
- Checking, refer below
- If sealing ring is leaking; nip open and replace
3 Oil filter bracket
4 Stop plate
- For oil cooler
- Mounted to oil filter bracket
5 Oil filter element
- Note replacement intervals with by-pass valve:
- Opening pressure: 2.0 bar
- Clip into lower oil filter section before installing
6 O-ring
- Oil before installing
7 Oil filter, lower section
- Tighten to: 30 Nm (22 ft lb)
- Drain before removing
8 Oil drain screw
- Tighten to: 10 Nm (7 ft lb)
9 Bolt
- Tighten to: 25 Nm (18 ft lb)
10 Oil pressure switch (1.4 bar) -F1-
- Tighten to: 20 Nm (15 ft lb)
- Black body
- Yellow wiring
- Checking, refer below
- If sealing ring is leaking; nip open and replace
11 Engine Oil Temperature sensor -G8-
- Tighten to: 10 Nm (7 ft lb)
- Green/black wiring

Procedure

Special Tools, Testers And Auxiliary Items
- VAG 1342 Oil pressure tester
- VAG 1527B LED tester
- VW 1594 Adaptor kit
- Wiring diagram

Test Sequence
- Remove sound dampening tray





- Remove 0.3 bar oil pressure switch (brown body)
- Screw removed oil pressure switch into tester
- Screw tester into the oil filter bracket in place of oil pressure switch





- Connect tester wire -3- (brown) to ground
- Connect VAG 1527B LED tester to battery positive (+) and 0.3 bar oil pressure switch -A- using jumper wires from VW 1594 adaptor kit
LED must light up
- Start engine and slowly increase engine speed
At 0.15 to 0.45 bar, the LED must go out
- If LED does not go out
Replace 0.3 bar oil pressure switch
- Connect LED tester to '1.4 bar oil pressure switch -B- (black)
At 1.2 to 1.6 bar, the LED must light up
- If LED does not light up
Replace 1.4 bar oil pressure switch
- Increase engine speed further
At 2000 rpm and an oil temperature of 80°C; oil pressure must be 2.0 bar minimum
At higher rpm, oil pressure must not exceed 70 bar
- Replace oil pump if necessary.