I’m having a strange issue with a DMC. It is a 2-stop. Got a call a couple days ago that it wouldn’t respond to calls & the doors were slamming shut. Car is in SCA, no faults in CLC, Selector or Door Board. Voltages were all good, but rectifier output from Power Relay Board was bad. Swapped Power Relay board, good voltage line but car still won’t run. Long story short, have swapped CLC, Selector, Door Board & Software, still same problem. Can’t find anything wrong with this car, no faults, all boards are ready, but car won’t take a hall call or car call. Can’t figure it out. All indications are that it should run but won’t.

Looking for any ideas or suggestions. Thanks