95 E300d No Heat
 

I started the heat this morning on my car and the monovalve is cold,aux water
pump in front of the monovalve warms up,not the valve+I can squize the lower hose from the monovalve,no water inside,any ideas how to troubleshoot or check the valve,maybe does not get power?,can I get a direct wire from the battery,bypassing the connector to see if it gets power?