How to Solve VXDIAG Subaru SSM3 ‘Communication Initialization Failed’?

Problem:

My vxdiag vcx Subaru SSM4 works fine on a 2014 Subaru Forester, but when I tested another 2013 Subaru Outback with SSM3, it failed to communicate. Error ‘Communication initialization failed. ‘

Any solution?

Solution:

In SSM3 at the starting screen, if you click on the top right “I/F Box”, there is only “Subaru Diagnostic Interface”, and “Denso DST-I”.

Make sure the “I/O box” is set to “SDI (Subaru Diagnostic Interface)”, it is connecting now.

In SSM4, set up the interface as VXDIAG