Originally Posted by
wiggy
The (possibly) faulty thrusters are located in the Service Module, so whilst they may have a role in ensuring correct attitude for retro fire they would be long gone by the time the crew get to re-entry itself.
Which is part of the reason why they are delaying the return - the Service Module is destroyed during re-entry, so they can't examine the faulty thrusters. So they are doing various testing while docked to evaluate what's going wrong in an effort to isolate the root cause.