Volkswagen Workshop Service and Repair Manuals > Polo Mk3 > Power unit | Direct injection and glow plug system with distributor pump as of 10.99 | Self diagnosis, V.A.G Inspection Service | Measured value blocks | Evaluating measured value blocks | Evaluation: Display group 11, display zone 4 - duty cycle of variable intake manifold flap change-over valve

Evaluation: Display group 11, display zone 4 - duty cycle of variable intake manifold flap change-over valve

Display fault reader -V.A.G 1551-

Possible fault cause

Fault elimination

Specification outside tolerance

t	Defective variable intake manifold flap change-over valve -N239-

–	Checking variable intake manifold flap change-over valve -N239- → Chapter, Final control diagnosis