How to Troubleshoot the Audio System
The audio system has a self-diagnostic function. To run self-diagnostic function, do the following:
How to check for audio system condition
NOTE: The audio unit must be in the code enter screen before performing the self-diagnostic procedure.
  1. Turn the ignition switch to the ACC (I) or ON (II) position.
  1. Turn on the audio unit.
  1. Push and hold the ‘‘No. 1'' and ‘‘No. 6'' buttons. While holding the buttons, push the ‘‘VOL push PWR'' knob (A) to ON. Release the buttons and the self-diagnostic function will begin.
  1. By pressing a preset button, the input will trigger the diagnostic mode that is assigned to that preset switch.
    ‘‘No. 3'' button
    Entire LCD lighting/light-out mode: Turns on/off the entire LCD to show the presence or absence of an LCD failure.
    ‘‘No. 4'' button
    Duty (for the Illumination dim) indication mode: Indicates the duty for the Illumination dim.
    ‘‘No. 5'' button
    Vehicle speed pulse indication mode: Indicates the Vehicle speed pulse.
    ‘‘FM'' button (Push and hold 2 sec.)
    Reception level check mode: Indicates the reception level. When entering the reception level check mode, the AM/FM button is used to change the main/sub antenna.