Self-Diagnosis; Features Of Self-Diagnosis; Technical Data Of Self-Diagnosis - Skoda Octavia Workshop Manual

OCTAVIA
Edition 12.00
S00.5113.53.20

Self-Diagnosis

Self-diagnosis

Features of self-diagnosis

The diesel direct injection system control unit is
equipped with a fault memory. The fault memory
is designed as a permanent memory and as a
volatile memory.
If faults occur in the monitored sensors or com-
ponents, these are stored in the fault memory
together with an indication of the fault type.
The engine control unit analyses this fault infor-
mation and distinguishes the fault types ⇒ page
01-8, Fault Table, and stores these faults until
the contents of the fault memory are erased.
Faults which occur only temporarily (sporadi-
cally), are displayed as „sporadic“ by the addi-
tion „/SP“. The cause of a sporadic fault may be,
for example, a loose contact or a temporary open
circuit in the wiring. If a sporadic fault no longer
occurs within 50 engine starts, it is automati-
cally erased from the fault memory.
The stored faults can be read out with the vehi-
cle system tester V.A.G 1552 or V.A.G 1551, or
also with VAS 5051 ⇒ page 01-5.
After any faults have been rectified, it is then ne-
cessary to erase the fault memory ⇒ page 01-6.
Notes:
♦ The description which follows relates only to
the vehicle system tester V.A.G 1552 using
the programme card version 5.0.
♦ If „see info in literature” appears in the dis-
play of the vehicle system tester, look for the
appropriate text in the fault table on the ba-
sis of the fault code.
♦ Use of the fault reader V.A.G 1551 (with pro-
gramme card version 8.0) with integrated
printer, or VAS 5051, is similar. Slight varia-
tions are possible in the readouts in the dis-
play.

Technical data of self-diagnosis

Interrogating control unit version
The control unit version is displayed when the
vehicle system tester V.A.G 1552 is connected
and the engine electronics control unit is selected
⇒ page 01-2.
01
------------ 01-1 ------------ ------------ 01-7 ------------