Skoda Octavia Workshop Manual page 35

OCTAVIA
Read out on display of V.A.G 1552
00596
Short-circuit between valve wires
00638
Engine/gearbox electrical connec-
tion 2
No signal
00641
ATF temperature
Signal too great
00652
Gear monitoring
Implausible signal
1)
First check plug connections for contact corrosion or water penetration and replace if necessary.
2)
Only replace clutches and slide valve body if all possible causes of faults mentioned have been rectified.
Note for fault code 00641:
If the gearbox control unit detects a too low gearbox
temperature, it will shift into the next lowest gear. If nec-
essary the Tc clutch is closed additionally.
Condition for fault recognition: Gearbox control unit de-
tects an ATF temperature above 148 °C.
Edition 06.03
S00.5116.60.20
Self-Diagnosis/Electrical Test
Possible cause of fault
Plug connection between ribbon ca-
ble/slide valve body and wiring har-
ness.
Ribbon cable to slide valve body de-
fective.
Line interruption or short-circuit to
earth.
No connection of engine control unit/
gearbox control unit.
Throttle valve signal/accelerator
pedal value is not transmitted to the
gearbox control unit.
ATF level not OK.
Gearbox is too hot, max. 148 °C.
Trailing load of vehicle is too high.
Wire defect between gearbox con-
trol unit and/or defective gearbox oil
temperature sender (ATF) -G93 not
detected by self-diagnosis.
ATF level not OK.
Defective gearbox, gearbox output
and engine speed not detected by
self-diagnosis.
Vehicle speed sender -G68 defec-
tive.
Multi-function switch -F125 not de-
tected by self-diagnosis.
Drive gear of vehicle speed sender
-G68 dirty or shifted.
Electrical or hydraulic fault of clutch
2)
or slide valve body.
Note for fault code 00652:
Rectifying fault
- Check wiring and plug connections accord-
ing to the ⇒ Current Flow Diagrams, Electri-
cal Fault Finding and Fitting locations.
- Perform electrical test ⇒ page 01-29.
- Replace ribbon cable ⇒ page 38-18
- Check wiring and plug connections accord-
ing to the ⇒ Current Flow Diagrams, Electri-
cal Fault Finding and Fitting locations.
- Reading measured value block ⇒ page
01-24 Display group number 005.
- Check engine control unit, replace if neces-
sary ⇒ Repair Group 01 and 24 of the rel-
evant engine.
- Put system in basic setting ⇒ page 01-15
- Check ATF level ⇒ page 37-22.
- Reading measured value block ⇒ page
01-16 Display group number 005.
- Perform electrical test ⇒ page 01-29 and if
necessary replace ribbon cable ⇒ page
38-18.
- Check ATF level ⇒ page 37-22.
- Perform fault rectification of fault codes
00281, 00293, 00297 and 00529.
- Replace vehicle speed sender -G68 ⇒ page
38-20.
- Fault rectification of fault code 00293.
- Check drive gear ⇒ page 39-5.
- Reading measured value block ⇒ page
01-16 Display group number 007 and while
driving determine in which gear the fault oc-
curs.
Condition for fault recognition: The ratio between en-
gine to gearbox output speed is implausible with each
engaged gear. When the clutch is open the slip speed
must be greater for torque converter lockup than the
limit speed for the hydraulic converter.
01
1)
1)
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