Check Connections With Line Diag Mode

Turn the ignition switch to ACC.
Press the button (b) twice with the button (a) pressed.

Fig 1: Locating Navigation System Buttons
Courtesy of SUBARU OF AMERICA, INC.

NOTE: Pressing the button (c) for 3 seconds or more, or turning the ignition switch from the OFF to ACC position can exit the diagnostic mode.
{Line Diag} screen is displayed.
Check the connection status with the {Connectivity Check} in the {Line Diag} screen.

Fig 2: Display Screen Line Diag For Connection Status
Courtesy of SUBARU OF AMERICA, INC.

NOTE: GPS is displayed only for the navigation system.
OK: Each connection device is connected properly.
NG: No connection or abnormal connection is detected.

NOTE: Check the external connection terminals (USB 1, 2 and AUX) by connecting a memory for check or a pin jack.