Skoda OCTAVIA MK1 Service Manual page 235

Check idling switch
Connect vehicle system tester -V.A.G 1552- and select address word 01 "Engine
–
electronics". Ignition switched on.
Select 08 for the function "read measured value block" and further select display group
–
098.
Check idling switch at idle stop in the display
field 3.
1. The position from the right must always
display 0
Read-out: 00000000
Slowly open throttle valve. 1. The position
–
from the right must always display 1
Read-out: 00000001
If the specified values are not reached:
Display
always 1
always 0
Continuing test if the read-out of the display is always on 1
Unplug plug -1- from the throttle valve
–
control unit -2-.
Cause
Open circuit/Short circuit to positive
Short circuit to earth
Reading measured value block 98
->
4.20 V 3.48 V
235
00000000 00
Continue test
→ Anchor
→ Anchor