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Table of Contents > Lubrication > Oil filter, engine oil cooler and oil pressure switch (engine codes CAWA, CAWB, CBFA, CCTA, CCTB, BZB, CGYA) > Checking oil pressure and oil pressure switch

VW Passat B6 Service Manual ➜ Checking oil pressure and oil pressure switch

CC 2010 ➤ , Eos 2006 ➤ , Golf 2004 ➤ , Golf 2009 ➤ , Passat 2006 ➤ , ...

4-cyl. injection engine (1.8 and 2.0 l engine, chain drive) - Edition 08.2018

– Install engine oil cooler -3- with new seal -2-.

3.3

Checking oil pressure and oil pressure switch

Special tools and workshop

equipment required

♦ Oil pressure tester - V.A.G 1342-

♦ Voltage tester - V.A.G 1527B-

♦ Adapter set - V.A.G 1594C-

♦ Jointed wrench 24 mm - T40175-

3. Oil filter, engine oil cooler and oil pressure switch (engine codes CAWA, CAWB, CBFA, CCTA, CCTB, BZB, CGYA)

227

CC 2010 ➤ , Eos 2006 ➤ , Golf 2004 ➤ , Golf 2009 ➤ , Passat 2006 ➤ , ...

4-cyl. injection engine (1.8 and 2.0 l engine, chain drive) - Edition 08.2018

Conditions:

•

Engine oil level OK.

Engine oil temperature at least 80 °C (radiator fan must have

run once)

Note

Functional check and repair of the optical and acoustic oil pres‐

sure display: Current flow diagrams ⇒ Vehicle diagnostic tester

“Function and component selection”.

Test sequence

•

Specified torque ⇒ Item 2 (page 225)

– Remove oil pressure switch - F1- and screw 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 1527B- 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 to 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 2.0 to 4.5 bar.

If specification is not attained:

– Check strainer in oil suction pipe for contamination/soiling

⇒ Item 22 (page 212) .

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 ⇒ page 216 .

If the specification is exceeded:

– Check oil channels.

228

Rep. gr.17 - Lubrication

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