Skoda OCTAVIA 2004 Workshop Manual page 107

OCTAVIA
Read measured value block
3090 rpm 1866 mbar
Read measured value block
3090 rpm 1866 mbar
Read measured value block
3090 rpm 1866 mbar
Edition 12.00
S00.5111.54.20
Fuel Formation/Fuel Injection
11
→
1917 mbar 62 %
11
→
1917 mbar 62 %
11
→
1917 mbar 62 %
If the charge pressure measured is too low, the
following faults are possible:
♦ Hose of charge pressure control dropped off,
leaking or blocked.
♦ Charge pressure control solenoid valve (N75)
blocked.
♦ Mechanism (linkage, shaft) of bypass valve
stiff or jammed (bypass valve constantly open).
♦ Pressure unit leaking.
If the charge pressure measured is o.k., repeat
measurement of charge pressure with charge
pressure control:
- Plug in connector at charge pressure con-
trol solenoid valve (N75).
- Read measured value block, display group
011, engine idling ⇒ page 01-58.
- Accelerate vehicle in 3rd gear at full throttle
for about 1500 rpm.
- At about 3000 rpm check readout in display
block 3 and note.
Models ä 07.97
Specification in display block 3:
K
1800...2050 mbar
Models 08.97 ä 04.99
Specification in display block 3:
K
1700...2080 mbar
Models 05.99 ä
Specification in display block 3:
K
1850...2250 mbar
Continued for all models
If the charge pressure measured is too low, the
following faults are possible:
♦ Electrical fault in charge pressure control
solenoid valve.
♦ Charge pressure control solenoid valve
(N75) jamming in open position.
If the charge pressure measured is too high,
the following faults are possible:
♦ Charge pressure control solenoid valve (N75)
occasionally jamming in closed position.
♦ Charge pressure increase as a result of „tun-
ing“.
23
------------ ------------