Check Body Integrated Unit Power Supply And Ground Circuit
WARNING: This page is about a different car, the 2016 Subaru Outback and 2016 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.
Refer to the "CHECK POWER SUPPLY AND GROUND LINE" of "Door Lock Control System" for detailed procedures. < Ref. to CHECK DOOR LOCK SWITCH , INSPECTION, Door Lock Control System. >