Skoda Octavia Workshop Manual page 29

OCTAVIA
on
1
Electrical fault in circuit
1
Voltage too small
1
Voltage too large
Edition 10.99
S00.5107.53.20
Self-Diagnosis
of fault
♦ Corrosion caused by mois-
ture in plug connection of
probe heater -Z19 or
lambda probe -G39
♦ Short circuit between
lambda probe signal cable
and lambda probe refer-
ence earth cable
♦ Amplitude of signal cable
too small (lambda probe -
G39 faulty or probe slots
blocked or dirty)
♦ Short circuit of lambda
probe signal cable to earth
or to screening
♦ Short circuit of lambda
probe reference earth cable
to earth or to screening
♦ Lambda probe faulty
♦ Short circuit of signal cable
to positive
♦ Lambda probe faulty
♦ Lambda closed-loop con-
trol switches to open-loop
♦ Poor idling
♦ Emission levels not o.k.
♦ Increased fuel consump-
tion
♦ Lambda closed-loop con-
trol switches to open-loop
♦ Poor idling
♦ Emission levels not o.k.
♦ Increased fuel consump-
tion
♦ Lambda closed-loop con-
trol switches to open-loop
♦ Poor idling
- Rectify short circuit or
open circuit in wiring.
⇒ Current Flow Diagrams,
Electrical Fault Finding
and Fitting Locations
binder
- Test function of lambda
control ⇒ page 24-42.3.
- Read measured value
block, display group 007
⇒ page 01-51.
- Read measured value
block, display group 021
⇒ page 01-62.
- Rectify short circuit or
open circuit in wiring.
⇒ Current Flow Diagrams,
Electrical Fault Finding
and Fitting Locations
binder
- Test operation of lambda
control ⇒ page 24-42.3.
- Read measured value
block, display group 007
⇒ page 01-51.
- Read measured value
block, display group 021
⇒ page 01-62.
- Rectify short circuit or
open circuit in wiring.
⇒ Current Flow Diagrams,
Electrical Fault Finding
and Fitting Locations
binder
- Test lambda control
⇒ page 24-42.3.
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