have 3 cars, was getting complaint of doors closing on people, and not reopening.
mechanic swapped out the imotion2 door board, since it was intermittent, but same complaint, one persons hand was bruised pretty good. any way i showed up to assist and cleared all faults and started running car. when the problem happened the car answered the car call, opened the doors about 3./4 fully open and closed immediately with no door protection, i.e. detector edge would not reopen door, it then continued on as if nothing happened. it would run another 30-60 min and happen again. controller logged a G21 fault. drive seems ok, so started checking on brake pick circuit and associated components. I could duplicate the problem by letting the brake pick, and during the run push up on the brake switch, the car would do the exact same thing as noted, and log a g21 fault. well we replaced the relays in the brake circuit, and still would get the fault. ended up finding a bad relay1 on the HVIB board.
one contact was severely burned. we are having a hard time finding this DOLD safety relay. may have to replace the entire board. The bad thing is that the other 2 cars are getting the same fault numerous times, and the same contact on the relay is burned.
Just wondering if anyone has had this happen, is it common, and also very concerned that we can duplicate the G21 fault and cause the car to do a normal stop, open the door and not reopen causing door to close on people. Seems the Dold relay was specially made for otis, and is not for sale elsewhere. the car is still down, until we find a relay, or replace the board,
Last edited by Vatorgator; 02/24/16 01:59 AM.