Hi,
It is possible only to select any of the
default languages.
It is not possible to select a language for map ,
and another for home settings.
when a language is selected ,it will be selected as,
Map language,keyboard,home language.
Go to settings>scroll down to language&input,
Tap here and on the coming screen scroll down
to "text-to-speech output" and tap on it.
Next screen see "google text-to-speech engine",
Next to this tap on the gear icon[in old O S
three horizontal lines],now,
Tap on the language button at top.
Select language and tap on it.
On this screen see below "install voice data"
tap on this button to download data.
After the download finished,
Return settings>>>language & input>
At the top see "languages" tap here and
Select the same language.
Reboot device/restart device.