Volume Does Not Change

Audio System Symptom Troubleshooting / Volume does not change

Volume does not change

NOTE:
* Check the vehicle battery condition first Battery Test.
* Set the fader and the balance positions to the center.
* Check the connectors for poor connections or loose terminals.

1. Problem verification:

Problem verification
-1. Turn the ignition switch to ON (II).

-2. Listen for sound from the speakers.

-3. Operate the volume knob to see if the volume changes.

Does the volume change?
-YES- Intermittent failure. The system is OK at this time.
-NO- Replace the audio-navigation unit Audio-Navigation Unit Removal and Installation.
-NO- The failure is duplicated, go to step 2.

2. Audio unit check:

Audio unit check
-1. Turn the ignition switch to LOCK (0).

-2. Substitute a known-good audio switch panel Audio Unit Removal and Installation, and recheck.

Does the symptom go away?
-YES- Replace the original audio switch panel.
-NO- Replace the audio unit Audio Unit Removal and Installation.