I am having mixed results trying to access the modules on a 2012 Honda Odyssey with Maxidas DS708 and the Honda 7.20 app.  I am plugging into the ODB-II connector under the dash.

Honda 7.20 >> USA >> Start New Session >> Control Unit

I am able to access ACM, Immobi, ABS/TCS/USA, Body Electrical, and TPMS.

I am unable to access Engine-PBM FI, AT, SRS, DBW (NSX) and Electric Powertrain.    What is happening is that the MaxiDAS shows a message such as "Establishing Vehicle Communications, Please Wait" followed by "Loading data...".  The MaxiDAS then appears to lock up with the car icon on the lower right showing a faint glow.  I can wait 2 minutes or 5 minutes ... the display just keeps showing "Loading data..." and the car icon is faintly lit.

Can someone tell me what is going on?  Am I not plugged into the correct connector for a Honda, or is there something wrong with the software?   (I am not experiencing this on other vehicles).

 Yes, it is a DS708 ... I will get the datalog to you shortly.