avslash

I'm trying to verify function on all of the vacuum modulators on the car.

Per the OBD-II diagnosis diagram, it looks like there are a total of five. I can locate four.

Specifically, I can find the Left selector sleeve mod., the right selector sleeve mod., the tuning flap mod., and the fresh air flap mod. located on the blower fan ducting.

I can't locate item number 32 from the OBD-II diagram titled Heater flap with vacuum modulator.

Any insight into the location of this piece????

Thanks for all the help. I've thrown enough questions out that I'll pony up for a membership tomorrow when I'm reunitied with my wallet at the office.

guards red

Its under the plastic cover that covers the pollen filters at the front of the car.

It's for the HVAC so the vacuum pipe goes all the way to the back of the car

ToreB

The vacuum operated resirculation flap is placed behind the dashboard. If you remove the CCU you will see the complete actuator mechanism. It's also possible to spot from beneath the steering column.
The electric valve that control the flap operation is placed in the luggage compartment underneath the thin plastic cover under the windshield.
There's some pictures here: www.ccu.tore.bergvill.com
Regards,
Tore

avslash

Many thanks for the information. That explains why I couldn't find another one in the engine compartment.

I guess its safe to assume that this vacuum branch has no impact on engine performance, then, assuming its not leaking.