Audio System Self-Diagnostic Function
Audio System Self-Diagnostic Function
The audio system has a self-diagnostic function.
NOTE:
- Not all self-diagnostic functions appear on all models.
- They may be other self-diagnostic functions that are for factory use only.
- The self diagnostic function does not find every problem with the audio system. Check any official Honda service website for more information about the audio system.
How to Use the Audio System Self-diagnostic Function
1. Turn the ignition switch to ON (II).
2. Enter the anti-theft code.
3. Push, and hold the No. 1 and No. 6 buttons. While holding the buttons, push the PWR knob to on. Release the buttons, and the self-diagnostic function begins.
4. The word DIAG appears on the subdisplay.
How to exit the self-diagnosis mode
Turn the audio system off or the ignition switch to LOCK (0).
How to Obtain the Audio Unit Serial Number and Retrieving the Anti-theft Code with the iN
NOTE: This procedure can only when the power has been disconnected from the audio unit, and the audio unit displays CODE when the audio unit is turned on.
With the audio unit switched off, push and hold the preset buttons No. 1, No. 6, and the PWR knob.
The audio unit displays 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 4 digit anti-theft code.
LCD lighting mode
When you press the No. 3 button, the entire LCD turns on to show if any LCDs are dead (off).
LCD lights-out mode
When you press the No. 4 button, the entire LCD turns off to show if any LCDs are stuck on.
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/AUX button for 5 seconds. The LCD back-up lights should come on. When you press and hold the DISC/AUX button for 5 seconds again, and the LCD back-up lights should go off.
Climate control system communication check mode
When you press the No. 5 button, the self-diagnostic checks the climate control unit communication line.
Audio amplifier communication check mode
When you press the No. 6 button, the self-diagnostic checks the audio amplifier communication line.
ANC/Active Sound Control system check mode
ANC active sound control can be turned ON or OFF, and you can check the current status. The ANC/active sound control switches ON and OFF with every push of the No. 1 button. If "--" appears on the display, use this check mode to check for loose wires or poor connections at the ANC/active sound control unit connector (16P).
How to check the ANC/active sound 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 ANC/active sound control unit and the audio unit.
- If the hum does not sound for a minute, check for an open in the wire between ANC/active sound control unit and the microphone.
- 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 ANC/active sound control system should activate. (NOTE: When any of the doors are opened, the function stops.)