01 - Self-Diagnosis; Self-Diagnosis I; Properties Of The Self-Diagnosis; Technical Data Of Self-Diagnosis - Skoda Octavia 1997 Workshop Manual

OCTAVIA 1997 1.9/74 kW (TDI) Engine, Fuel Injection and Glow Plug System 01
01 – Self-diagnosis
01-1

Self-diagnosis I

Properties of the self-diagnosis

The control unit for the diesel direct injection system is
equipped with a fault memory. The fault memory is de-
signed as a permanent memory.
If malfunctions occur in the monitored sensors or compo-
nents, they are stored in the fault memory with indication
of the fault type. Fault table Chap. 01-2.
Faults which occur only temporarily (sporadically) are
displayed with the suffix „/SP". Possible causes of spo-
radic faults are e.g. a loose contact or a momentary line
interruption. If a sporadic fault no longer occurs after 50
engine starts, it is automatically erased.
If faults are detected that are likely to influence the driving
behaviour, the glow period warning lamp -K29- flashes.
The stored faults can be read out with the vehicle system
tester -V.A.G 1552-, -V.A.G 1551- or -VAS 5051-
01-1 page 2.
After the fault(s) has(have) been removed the fault mem-
ory must be erased 01-1 page 3.
Note
The following description only relates to vehicle system
tester -V.A.G 1552- using the current program card.
When not using the current program card or when using
the fault read-out scan tool -V.A.G 1551- with integrated
printer or using the vehicle diagnosis, measurement and
information system -VAS 5051- a minor deviation in the
display is possible.

Technical data of self-diagnosis

Interrogating control unit version
The control unit version is displayed once the vehicle sys-
tem tester -V.A.G 1552 - is connected and the engine
electronics control unit is selected 01-1 page 2.
Available functions when using the vehicle sys-
tem tester -V.A.G 1552-
The preconditions for selecting the desired functions are
given in the following table.
01-1 1
Edition 12.03 Self-diagnosis I
page
S00.5139.52.20