Check Speaker Output 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
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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.

Fig 2: Display Screen Line Diag For Connection Status
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Touch {Audio Check} on the {Line Diag} screen.
{Audio Check} screen is displayed.

Fig 3: Display Screen Audio Check
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Touch the {ON} key of {Speaker Check} to check speaker output.
NOTE:
- The speaker front left → front right → rear right → rear left will sound in order for 2 seconds each.
- The speaker sounds at the maximum volume during speaker check.
- Press the {BACK} key to return to the {Line Diag} screen.