Audio System

Self-diagnostic Function

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

Speaker Check Mode

1. Turn the ignition switch to ON (II). The audio unit must be OFF at this time.
2. Press and hold the Preset 1 and Preset 3 buttons. While holding the buttons, push the VOL PUSH PWR knob (A) to ON.

NOTE:
- If the audio unit enters the self-diagnostic mode, the following will occur.
- Radio tunes to FM 97.9 MHz.
- DIAGNOSTIC (DIAG) is displayed.
- FM 97.9 MHz is broadcast through the selected speaker.
- The buttons that operate are Volume Up/Down, SEEK +/-; and audio remote switch input for CH�+/- and Volume Up/Down.
- If the audio unit does not enter the self-diagnostic function, turn the ignition switch to LOCK (0) and repeat step 1 and step 2.






3. Cycle up or down with the audio remote switch "CH +/-" button or the audio unit SEEK +/-" button and check each speaker.






4. If any speaker does not sound, check for an open in the wire between the audio unit and its speaker. If the wire harness is OK, do the speaker test.
5. To exit the self-diagnostic function, turn the ignition switch to LOCK (0).

Active Noise Control (ANC) system check mode

1. Turn the ignition switch to ON (II).
2. Press and hold the Preset 1 and Preset 6 buttons. While holding the buttons, push the VOL PUSH PWR knob (A) to ON.






3. By pressing the Preset 1 button, the input will trigger the ANC ON and OFF mode.
4. The self-diagnostic function ends when you turn the audio unit off, or turn the ignition switch to LOCK (0).

How to check the active noise control system in this check mode

- With the engine off, and while in the 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 ECM/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 ends.)

Serial Number Display Mode

To obtain the audio unit serial number on a vehicle, do the following:

NOTE: This procedure can only be performed when the battery power is disconnected from the audio unit and the audio unit displays "CODE".

1. Turn the ignition switch to ON (II). The audio unit must be OFF at this time.
2. Press and hold the Preset 1 and Preset 6 buttons. While holding the buttons, push the VOL PUSH PWR knob to ON.
3. The display will show a U and the first four digits serial number. After five seconds, the display then changes to a L and the last four digits serial number.
4. Use all 8 numbers as the serial number when using the iN (Interactive Network) to retrieve the 5 digit anti-theft code.
5. The serial number output mode ends when you turn the audio unit off, or turn the ignition switch to LOCK (0).