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" appears on the subdisplay.






How to exit the self-diagnosis mode

Turn the audio power off or the ignition switch to LOCK (0).

How to Obtain the Audio Unit Serial Number

NOTE: This procedure can only when the power has been disconnected from the audio unit, and the audio unit displays CODE.

With the audio unit switched off, push and hold the preset buttons No. 1, No. 6 and the PWR knob.

The audio unit will display the letter U with the first four digits of the serial number (example U1234).
The display then changes and displays the letter L and the last four digits of the serial number (example L5678).
Use all eight digits as the serial number when using the interactive network iN to get the 5 digit anti-theft code.






LCD lighting mode

By pressing the No. 3 button, the entire LCD will turn on to show the presence or absence of a faulty LCD.






LCD lights-out mode

By pressing the No. 4 button, the entire LCD will turn off to show the presence or absence of a faulty LCD.






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

By pressing the No. 5 button, the climate control unit communication line is checked.






Audio amplifier communication check mode

By pressing the No. 6 button, the audio amplifier communication line is checked.






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.)