Communication Diagnosis

Turn the ignition ON.
Turn the audio system OFF.
While pressing the preset 6 button, turn the volume control dial clockwise or counterclockwise 30 clicks or more.

Fig 1: Pressing The Preset 6 Button, Turn The Volume Control Dial Clockwise Or Counterclockwise 30 clicks
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Initially, the communication diagnosis mode is displayed.

Fig 2: Display -- Communication Diagnosis Mode Screen
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To exit communication diagnosis, turn the ignition OFF.