iPad Activation Lock question
Hi,
I recently sold my old faulty iPad Air 2 on eBay. It was working fine until one day when it just wouldn't switch on. The buyer wanted it apparently for the screen. He has since come back to me and said it is iCloud locked and marked as lost. I suspect this is because I set it to remote erase in iCloud, which I'm told it will do if he ever manages to fix it and connect it to wi-fi.
He has asked me to remove the iPad from my iCloud account. If I do this and he gets it working again, what will happen? Obviously, as it just failed, I didn't get chance to wipe it before selling it.
The iPad had a passcode on it. Will that be intact if he gets it to power up again, and then he'll just have to erase it? Basically, I just want to make sure that if I remove from my iCloud account, he won't have access to the data on the old iPad.
Thanks in advance for your help.
iPad Air 2, iOS 12