In order to correspond to homescreen, I added afm-binder permission to navigation.  As a result, navigation lost the permission of dbus.

 Nov 12 11:38:27 m3ulcb cynara[3459]: User::App::navigation;0;http://tizen.org/privilege/internal/dbus => DENY
Nov 12 11:38:27 m3ulcb afbd-navigation@0.1[9544]: terminate called after throwing an instance of 'DBus::Error'
Nov 12 11:38:28 m3ulcb afbd-navigation@0.1[9544]: what(): Connection ":1.13" is not allowed to own the service "org.agl.gpsnavi" due to security policies in the configuration file

config.xml is as follows: 

<?xml version="1.0" encoding="UTF-8"?>
<widget xmlns="http://www.w3.org/ns/widgets" id="navigation" version="0.1">
<name>Navigation</name>
<icon src="navigation.png"/>
<content src="navi" type="application/vnd.agl.native"/>
<description>NAVIGATION App</description>
<author>AISIN AW</author>
<feature name="urn:AGL:widget:required-permission">
<param name="urn:AGL:permission::public:no-htdocs" value="required" />
<param name="http://tizen.org/privilege/internal/dbus" value="required" />
</feature>
<feature name="urn:AGL:widget:required-api">
<param name="homescreen" value="ws" />
<param name="windowmanager" value="ws" />
</feature>
<license>GPL</license>
</widget>