Skoda Octavia 1997 Workshop Manual page 48

01
Voltage of the 4-pin lambda probe in U in mV
A: Lambda probe voltage high
rich mixture (fuel surplus or air shortage)
high CO value
B: Lambda probe voltage low
lean mixture (fuel shortage or air surplus)
low CO value
Analysis: Display group 036, display field 1 - Voltage of lambda probe, lambda probe downstream
of catalytic converter
Display
-V.A.G 1552 -
constant 1,10 V
♦
constant between
♦
0.40 ...0.50 V
constant 0.00 V
♦
Display group 041 Lambda probe heater
Engine idling
Coolant temperature
Reading measured value
block 41
xxxx Text xxxx
Ω Ω
1 2 3
Heater of lambda probe upstream of catalytic con-
verter
(Heating.bC.OFF/heating.bC.ON)
Internal resistance of lambda probe upstream of catalytic
converter
01-6 6
page
Octavia 1997
Possible cause of fault
Short circuit to positive caused by: Lamb-
da probe, lambda probe cable, earth lead,
engine control unit
Line interruption through: Lambda probe,
lambda probe cable, earth lead, engine
control unit
Short circuit to earth caused by: Lambda
probe, lambda probe cable, earth lead,
engine control unit
80 C
< Readout on display
Text
4 < Display field
Heater of lambda probe down-
stream of catalytic converter
(Heating.aC.OFF, heat-
ing.aC.ON)
Internal resistance of lambda probe
downstream of catalytic converter
1.6 l/75 kW Engine, Fuel Injection and Ignition System
–
Test lambda probe -G130- and lambda
control downstream of catalytic converter
µ Chapter 24-4.
Self-diagnosis VI
Rectifying fault
Specification Analysis
Htg.bC.ON
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Htg.bC.ON
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Edition 10.04
S00.5135.52.20