Sorry, the NHTSA has not posted this TSB document yet.
You can still get the detailed info from Toyota for this TSB. Call your local Toyota dealer's service department & ask for a copy of TSB# T-TT-0379-15.
TT: SOME 2014 AND 2015MY RAV4 VEHICLES MAY EXHIBIT A B15E6 DTC IN THE NAVIGATION SYSTEM. THIS DTC PERTAINS TO A SYSTEM THAT IS NOT EQUIPPED TO US MARKET VEHICLES AND SHOULD BE IGNORED. THIS DTC HAS NO ADVERSE EFFECTS ON THE OPERATION OF THE NAVIGATION SYSTEM AND SHOULD NOT HAVE A REPAIR ATTEMPTED.