Enable/Activate GPS positioning in terminal commandline

I've just noticed the question has been updated, but certainly to start or stop the GPS, your command is 'spot on!' :)

Thanks a lot but it wrote

# connmanctl enable gps
Error gps: Already enabled

then

$dbus-launch harbour-pitot    (gps application)
[D] unknown:0 - Using Wayland-EGL
[D] unknown:0 - Geoclue client path: "/org/freedesktop/Geoclue/Master/client0"
[W] unknown:0 - QMetaMethod::invoke: Unable to handle unregistered datatype 'QGeoPositionInfo'

Also:

# /usr/libexec/geoclue-master &
[1] 1833
[root@Sailfish nemo]# Master options:
** Message: GSettings key 'gps-baudrate' initialised to '0'
** Message: GSettings key 'gps-device' initialised to '(null)'
Found providers:
  geoclue-here.provider
  geoclue-hybris.provider

Just tested on my second working Jolla device; the output of harbour-pitot not depending on actived or not Location function.

Just found almost similar topic. But there is NO answer in https://together.jolla.com/question/96248/toggle-settings-from-terminal-to-start-gps/

My attempt was like:

#/bin/dbus-send --print-reply --type=method_call --system --dest=net.connman /net/connman/technology/gps net.connman.Technology.SetProperty string:Powered variant:boolean:true          
Error net.connman.Error.AlreadyEnabled: Already enabled

But GPS client application still not working