Initial Inspection and Diagnostic Overview

Self-diagnostic Function

The audio system has a self-diagnostic function. To run the self-diagnostic function, do the following:

How to check for audio display condition

1. Turn the ignition switch to the ACC (I) or ON (II) position.
2. Enter the anti-theft code.
3. Turn off the audio unit.




4. Push and hold the "1" and "DISC 6" buttons. While holding the buttons, push the "VOL push PWR" knob (A) to ON. Release the buttons and the self-diagnostic function begins.
5. "DIAG" will appear on the audio unit to indicate you have entered the self-diagnostic mode.
6. By pressing a preset button while "DIAG" is displayed, the input will trigger the diagnostic mode that is assigned to that preset switch.

"3" button
Entire LCD lighting mode: Turns on the entire LCD to show the presence or absence of an LCD failure.

"4" button
Entire LCD light-out mode: Turns off the entire LCD to show the presence or absence of an LCD failure.

"1" button (With navigation)
Active noise control system function check mode:

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 the 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 the unit and PCM.
- Test drive at 55 mph (88 km/h) and enter the "DIAG" mode. Turn the active noise control system OFF and back to ON (II), the active noise control system should activate.

NOTE: The active noise control system is cancelled when any door is opened.

7. The self-diagnostic function ends when you turn the audio unit off, or turn the ignition switch off.