Test Variable Intake Manifold Changeover Valve -N156 - Skoda OCTAVIA MK1 Service Manual

– If necessary replace vacuum unit.
If the vacuum unit does not connect, test valve
-N156- for continuity as follows:
Connect one contact of the valve°with the
– connection line and alligator clip from
-V.A.G 1594 A- to the engine mass.
Lay a second contact of the valve with remote
control - V.A.G 1348/3A-, adapter cable
–
-V.A.G 1348/3-2- and connection line to
positive terminal.
– Activate remote control -V.A.G 1348/3A-.
Test valve for continuity (disconnect vacuum
–
lines and blow out).
If necessary replace valve for variable intake
–
manifold changeover.
If no fault was detected during all the previous
–
tests, check the vacuum system for leaks.

Test variable intake manifold changeover valve -N156-

Fitting location → Chapter.
Special tools and workshop equipment required
t Handheld multimeter, e.g. -V.A.G 1526 A -
t Voltage tester, e.°g. - V.A.G 1527-
t Measuring tool set, e.g. -V.A.G 1594 A-
t Test box, e.g. -V.A.G 1598/22 -
Test condition
l Fuse 34 must be OK.
Electrically test valve for variable intake manifold changeover -N156-
– Disconnect plug at variable intake manifold changeover valve.
Measure the resistance between the contacts of the variable intake manifold changeover
–
valve.
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