I ran the battery down on my iPhone 6+ to 65% and then attached it to the Z-130BT with the lightning cable to 30 pin adapter and it worked fine - no errors. While playing I disconnected the phone and reconnected it and it work fine. While checking out Aha Radio, Pandora and playing a movie from an SD card it charged the iPhone to 73%.
So I would recommend updating the firmware on the AVIC and use the latest IOS 8 version.
Specs for clarity: Z-130BT with firmware and software version of 5.000 upgraded using link I provided above and courtesy of misterwoofwoof.
iPhone 6+ 128GB IOS 8.0.2
AVIC cable is Pioneer D-IU51V
Hope this helps.