Audio System

Self-diagnostic Function

The audio system has a self-diagnosis function.

How to enter the self-diagnosis mode
1. Turn the ignition switch to the ACC (I) or ON (II).
2. Enter the anti-theft code.
3. Push and hold the "No. 1" and "No. 6" buttons and "PWR" knob.




4. The word "DIAG" will display on the subdisplay.

How to exit the self-diagnosis mode
Turn the audio power off or the ignition switch OFF.




LCD lighting mode/LCD lights-out mode

LCD back-up light lighting/lights-out mode
Press the No. 4 button to turn off the entire LCD, then press and hold the "DISC" button for 5 seconds. The LCD backup lights should come on. From this point, press and hold the "DISC" button for 5 seconds again, and the LCD back-up lights should go off.




Climate control system communication check mode/Audio amplifier communication check mode




Active Noise Control (ANC) system check mode
Active noise control can be turned ON or OFF, and the current status is checked. The active noise control switches ON and OFF with every push of the No. 1 button. It checks for loose wires or poor connections at the active noise control unit connector (16P) in case that "-----" is displayed.

How to check the active noise control system in this check mode
- With the engine stopped, and while in DIAG mode, turn the ANC ON to OFF by pressing the No. 1 button. A low-frequency hum (50 Hz) should sound for about a minute.
- If the hum does not sound, check for an open in the wire between the active noise control unit and the audio unit.
- If the hum does not sound for a minute, check for an open in the wire between active noise control unit and the microphone.

- Start the engine while the hum is sounding. The hum should stop. If the hum does not stop, check for an open in the wire (NEP line) between the active noise control unit and the PCM.
- Enter the "DIAG" mode with the engine running (900 rpm), apply the brake pedal and shift to D position, turn the "ANC ON" to "ANC OFF" by pressing the No. 1 button on the audio unit, then turn the "ANC OFF" to "ANC ON". After about 3 seconds, the active noise control system should activate. (NOTE: When any of the doors are opened, the function is stopped.)