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-   -   DISA resurrection? (https://xoutpost.com/bmw-sav-forums/x5-e53-forum/113757-disa-resurrection.html)

Oldmactech 10-06-2021 01:51 PM

DISA resurrection?
 
My DISA shoes not active on my scanner.

Gets 12 volts at key position two but the flap doesn’t move with 12v to it.

I have already replaced the flap and such but the actuator seems to have failed. Any chance to fix that?

Thanks.


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Corellian Corvette 10-06-2021 01:55 PM

I'm not aware of any fix to the electrical side.

I would try and source a good used unit vs. a new aftermarket one. I haven't had great luck on aftermarket ones.

Oldmactech 10-06-2021 02:01 PM

Thanks, kinda figured that.


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Clavurion 10-06-2021 03:10 PM

You need vacuum to operate it. It's electric vacuum solenoid, not a servo drive.

andrewwynn 10-06-2021 03:16 PM

I always suck on the DISA tube to make sure the valve moves before installing.

Corellian Corvette 10-06-2021 04:33 PM

I've always been curious about this. Is it Vacuum that holds the valves shut and that sends an electrical signal? Or is there a servo in there that allows the flap to move?

Clavurion 10-06-2021 04:48 PM

Quote:

Originally Posted by Corellian Corvette (Post 1210850)
I've always been curious about this. Is it Vacuum that holds the valves shut and that sends an electrical signal? Or is there a servo in there that allows the flap to move?

When the vacuum solenoid (eventually a coil) is activated vacuum (from connected hose) will pull the valve closed (vacuum bell with a diaphragm).

https://www.pss-autosoft.net/diagram...1214_M0DIS.htm

More reading from page 41.

https://www.ge39.com/files/m54x5.pdf


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