Skoda Octavia Workshop Manual page 63

OCTAVIA
est
1
2
3
4
Note on display block 3:
In combination with fault code „16500“ what is compared in display block 3 is the temperature curve in the range from
20 °C up to 60 °C with a model curve stored in the control unit. The model curve rises more slowly than the real
temperature. If the real temperatures become slower because of a fault, they are aligned at some point with the model
values. This fault is detected by the engine control unit as being implausible.
Edition 03.98
S00.5107.52.20
003
on
less than 10 V
greater than 14.5 V
less than 80 °C
greater than 105 °C
constant 19.5 °C
Self-Diagnosis
of
♦ see also display group 001,
display block 1 ⇒ page 01-43
♦ Alternator faulty, battery se-
verely discharged
♦ Electrical system subject to
severe load after starting be-
cause of high charge current
and ancillaries
♦ Contact resistance in power
supply or earth connection for
engine control unit
♦ Current drain with ignition off
♦ Voltage regulator at alternator
faulty
♦ Overvoltage caused by jump-
starting or quick-charger
♦ Engine too cold
♦ Coolant temperature sender
or cable connection to engine
control unit
♦ Radiator dirty
♦ Radiator fan not operating
♦ Thermostat faulty
♦ Coolant temperature sender
or cable connection to engine
control unit
♦ Fault detected at intake air
temperature sender -G42 de-
tected
♦ Intake air temperature sender
-G42
- Test voltage, charge battery
- Increase engine speed slightly
for a few minutes and switch
off ancillary components
- Test voltage supply to engine
control unit ⇒ page 24-25
- Eliminate current drain
- Test voltage, replace regulator
if necessary
- Interrogate fault memory
⇒ page 01-5
- Carry out road test, if neces-
sary
- Test coolant temperature
sender -G62
⇒ page 24-23
- Clean radiator
- Test operation
- Test thermostat
- Test coolant temperature
sender -G62 ⇒ page 24-23
- Interrogate fault memory
⇒ page 01-5
- Test -G42
⇒ page 24-20
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