GTN Not driving C172 CDI

[ErikU]

Hello,

I am successfully using the GTN application with the C172 (round gauges).  I am able to use the GTN to drive the CDI in NAV mode following a VOR.  When switching the CDI source to GPS (using the C172 panel or the GTN CDI button), the CDI just stays centered and does not show any course deviation.  The nav flag is not up. 

How can I get the GTN GPS to drive the CDI show I can fly a GPS approach?

[adminOwner2]

Hello,

Thank you for the bug report. With the C172 and steam gauges, if you look on the G530 to the right of the VOR, when in GPS mode, do you see the CDI needle move appropriately?