I have a factory installed Tsunami (TSU-1000) in a Athearn Genesis MP15AC.

I have a question that has had me puzzled for some time now – and that’s the break squeal.  I can’t seem to get it to work on my engine?  Pressing various as-listed function keys gets me what I believe is the air break sound – but coming to a stop I hear nothing.

Pressing the Option button on the PowerCab (default for brake) it just stops completely.

I understand the CV's on the factory decoder may be different than than that of a decoder purchased elsewhere - but I have tried different functions with no luck.

I might just have something turned off - but what CV’s need to be what in order to hear the squeal, and how would I go about setting them up to squeal automatically as I apply the break?

Thanks -