Skoda Workshop Service and Repair Manuals > Fabia Mk1 > Vehicle electrics | Electrical System | Lights, lamps, switches inside, anti-theft system | Self-diagnosis of immobiliser | Reading measured value block

Analysing measured value block 22

Start operation authorised	Engine control unit communicates	Key code detected	Number of adapted ignition keys
1 yes	1 yes	1 yes	2
0 no	0 no	0 no

Fault analysis:

Start authorised “0”

t	A non-authorised or incorrectly coded key was used

t	Engine control unit not adjusted

Engine control unit communicates “0”

t	the engine control unit is defective or there is a fault in the wiring

–	Interrogate fault memory of engine control unit.

Key code detected “0”

t	A defective key or a key without transponder was used

t	An ignition key with incorrect transponder type was used (permanent code transponder)

t	There is a fault in the operation of the reader coil

–	Read out fault memory (function 02) → Chapter.

Number of adapted keys: 2

If the displayed value in the first 3 display blocks is “1”:

–

Press →.

Readout on display, e.g.:

If a different read-out appears in the display, it is necessary to perform the function “adapt ignition key” → Chapter

If the readout in display block 3 is “0”:

An ignition key with incorrect transponder type was used.

–	Obtain an ignition key with the correct transponder type.

Note

There are different ignition keys with different types of transponders. Pay attention to the Part No. when ordering!

–

Press →.

Reading measured value block         23   ->

     1         1         1        2

Readout on display:

Vehicle system test                 HELP

Select function XX

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