Skoda OCTAVIA 2004 Workshop Manual page 31

OCTAVIA
Test of vehicle systems
03 - Final control diagnosis
Final control diagnosis
Start of injection valve -N108
Final control diagnosis
EGR valve -N18
Final control diagnosis
AC compressor cut-off
Edition 05.97
S00.5111.51.20
Self-Diagnosis
- Press keys 0 and 3 for the function „Final
control diagnosis".
Q
K Readout in display:
- Confirm the entry with the key Q.
K Readout in display:
→
When the valve is actuated, this results in a
clearly audible change in the combustion
noise (diesel noise).
If no change in the combustion noise can be
heard:
- Test injection timing device control range
page 23-28.
- Press the → key.
K Readout in display:
→
The valve should click.
Note:
The clicking of the valve cannot be heard be-
cause of the engine noise and should therefore
be felt by touching.
If the valve does not click:
- Test EGR valve
- Press the → key.
K Readout in display:
→
What is tested is the AC compressor cut-
off.
The test step is also displayed in the case of
vehicles without air conditioning.
The AC compressor should stop within 5
seconds (visual inspection with electric
torch), and then start and stop again approxi-
mately every 5 seconds.
If the AC compressor is not switched off:
- Test AC compressor cut-off
page 23-34.
page 23-49.
------------ 01-19 ------------
01