Bought a 06 Grand Voyager. Seems that powered slide doors & powered tailgate open only from the key fob and with manual operation. No reaction from B pillar or overhead console buttons. And tailgate microswitch does not operate either (just changed the corroded microswitch).
Checked overhead console connections and no visual corrosion there. Fuses checked, but not the relays (my guess was that should not be relay related problem with these symptoms) .
What to look next? I understood from someone's post that overhead console and B pillar buttons are in some kind of chain, so one problem can make all these problems? (Just wondering if the tailgate microswitch is not in the same chain...?)

 

make surer on the over head the lock out switch is not depressed also make sure the child safely buttons on the sliding door latches are not turned on

 

Lock out switch on the overhead console is checked, did it once again just to be sure. Also child protection locks tested again from both sides. If those are activated, the manual opening button inside the door does not work either. Electric buttons stay inoperative all the time.

When You operate the overhead console buttons (the ones related to doors & hatch), does the overhead display show You something? Mine does not. Display reacts only to the buttons around the display.

 

This is getting a little bit strange...

I just went to garage to test hint from other website about pulling the IOD fuse out for a few minutes. I first had to put some wheel covers into the van and opened manually slide door, keeping the handle pulled all the sliding till the end. Door kept some electrical noise at the very end of the opening. So I was curious and I tried the B pillar button and it worked! Testing, and the door also opened with the button. Rushed to the other side of car, opened front door and pushed B pillar button and the slide door opened! I did nothing with the car since I earlier today tested child protections locks & overhead panel buttons.

Sadly, the overhead buttons are still "dead". The overhead console is "EVIC" and it displays door open info etc. Maybe I'll try the fuse removal tomorrow.

 

Latest news. Yesterday I drove on countryside gravel road that was in pretty bad shape after winter, lots of pot holes that could not be avoided. Result after coming home, all slide doors and tailgate now work from every button inside & outside!

So, probably there is some sort of bad / corroded connection somewhere that was solved this time by rough road / shaking.

(There was a day or two between these my posts that the B-pillar buttons stopped working again.)