Garmin G3X Touch Maintenance Manual page 35

3.2.3 Configuration/Diagnostic Mode
Troubleshooting and diagnostic information for CAN bus can be viewed in Configuration/Diagnostic
mode. For CAN troubleshooting information, reference section 5.2.
To enter configuration/diagnostic mode:
1. Simultaneously hold down the "MENU" and "NRST" key on the GDU 4X0 while applying power to
the aircraft, until the "Configuration/diagnostic Mode" text is displayed on the screen.
2. Use the "Move Selector" knob or touch panel to make selections as necessary.
3. After all configuration changes have been made, use the "Save & Reboot" page to save all
changes and return to normal mode.
Maintenance Manual
G3X Touch EFIS Part 23 AML STC
Page 25
190-02472-02
Revision 2