checking oil AUDI A6 1999 C5 / 2.G AHA ATQ Engines Lubrication System Components Checking Manual

17-30


Lubrication system
components, checking

Oil pressure and oil pressure switch,
checking


Note:
For the functional check and servicing of the
optical and acoustic oil pressure warning
"Electrical Wiring Diagrams, Troubleshooting
&Component Locations".

Test sequence

- Remove oil pressure switch -F1- and install in tester.
- Install tester into oil pan in place of oil pressure switch.
- Connect brown wire of tester to Ground (GND).
- Using auxiliary cables from VW1594, connect VAG1527B voltage
tester to oil pressure switch and Battery (+).
- Start engine and slowly increase engine speed (RPM).
At 1.2-1.6 bar pressure LED must light up.
- If not, replace oil pressure switch.
- Increase engine speed (RPM) further.
-
At 2000 rpm and an oil temperature of 80 C, oil pressure must be at
least 2.0 bar.
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11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
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17-32

Oil level, checking


Test requirements

Minimum engine oil temperature 60 C

Vehicle must be standing on level ground
when checking oil level
After stopping engine, wait a few minutes to
allow oil to flow back into oil pan

- Withdraw dipstick, wipe using clean cloth and
reinsert fully.

- Withdraw dipstick again and read oil level.

Range of markings on dip stick:
CAUTION!
Do not overfill with oil past the MAX mark on the oil dipstick.
Damage to the Three Way Catalytic Converter (TWC) could result. a - Oil MUST NOT be topped off.
b - Oil may be topped off. After topping off, oil may reach range -a-.
c - Oil MUST BE topped off. After topping off, it is sufficient if oil level is
somewhere in range -b- (shaded area).
Pa
ge 3 of 3 Lubrication s
ystem com
ponents, checkin
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11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE03.17.2