You can't with out causing the airbag light to be on permanently.
On the end of the air cleaner box where the hose hooks on.
One engine air filter and one cabin air filter.
It is on top of the center of the engine, you will have to remove the air filter box to access it.
The engine air filter is located inside the large black box on top off the engine.
You take it out
On the diesel it is on the top center of the engine, under the air cleaner and engine cover.
There is no factory installed device to turn off the passenger air bag on a Caravan.
The air suspension shut off switch is in the front passenger footwell ( like the fuel pump shut off switch is )
It is inside the black box directly above the engine, on the underside of the wiper cowl.
It is on top of the engine. You have to remove the air filter assembly and the cover between the heads.
If equipped, there is an access panel under the dash on the passenger side.
02-06, it is on the driver side of the engine. 07-09 it is under the air cleaner, and upper engine cover.