Skoda OCTAVIA MK1 Service Manual page 229

Connect the voltage tester between
– contact 1 of the plug and the engine
mass.
– Activate the starter.
Specified value: The voltage tester must
light up.
If the voltage tester does not light up,
– check the wiring of contact 1 to fuse for
continuity, if necessary repair
flow diagrams and Fitting
If the wiring is o.k., test fuel pump relay
–
→ Chapter.
Test actuation of the solenoid valve -N80-
Connect voltage tester e.g - V.A.G 1527-
– between contact 2 (earth control of the
engine control unit) and positive terminal
of the battery.
Initiate an actuator diagnosis and select
–
the activated charcoal filter solenoid
valve 1 -N80- →
Specified value: The voltage tester must
flash.
If the voltage tester does not flash or if it
remains lit:
– Switch off ignition.
Connect the test box -V.A.G 1598/22 - to
–
the wiring loom of the engine control unit
→ Chapter.
If the voltage tester lights up
permanently, check the wiring from
–
contact 2 of the plug at the solenoid
valve for bush 15 of the test box for
short-circuit to earth.
If the voltage tester did not flash, check
– the wiring from contact 2 of the plug at
the solenoid valve for bush 15 of the test
box for short-circuit to positive.
If there is neither a line interruption nor a
–
short-circuit; replace engine control unit
→ Chapter.
→ Current
locations.
Chapter.
229