SSO Connection doesn't work for Fiori UI

Hello Sap Team

SSO is currently activated and it works well.

Currently, users use HTML5 version. So the URL link with SSO is the following : https://my314165-sso.crm.ondemand.com/

When I want to connect to FIORI with SSO, so that link ; https://my314165-sso.crm.ondemand.com/sap/public/ap/ui/repository/SAP_BYD_UI/HTML5/newclient.html ,
SSO doens't work and C4C requests me to login with a C4C username and password.

How can i do to logon with SSO on FIORI directly ?

thank you

jérémie