Volume Does Not Change

Volume does not change

NOTE:
- Check the vehicle battery condition first.
- Check the connectors for poor connections or loose terminals.
- Set the fader and balance position to the center.

1. Turn the ignition switch to ON (II).
2. Turn on the audio unit and check for sound in each mode (AM, FM, XM, and disc).

Is the sound normal?

YES - Go to step 3.

NO - Go to audio system sound is weak or distorted, or no sound is heard from speakers.

3. Check the audio information on the display panel control unit (without navigation) or audio-HVAC subdisplay unit (with navigation).

Does the audio information display properly?

YES - Intermittent failure, the system is OK at this time.

NO - Go to step 4.

4. Operate the volume knob to see if the volume changes.

Does it change?

YES - Operation is normal.

NO - Replace the audio unit.