Check Connections With Line Diag Mode

WARNING: This page is about a different car, the 2017 Subaru Outback and 2017 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.

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

Fig 1: Pressing Button
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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: Screen Display - Line Diag
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.