Symptom Troubleshooting

Audio System Symptom Troubleshooting - Volume does not change

Volume does not change

NOTE:

- Check the vehicle battery condition first Battery Test.
- Check the connectors for poor connection or loose terminals.
- Set the fader and balance positions 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 CD).

Is the sound normal?

YES -

Go to step 3.

NO -

Go to Audio system sound is weak or distorted (display is normal) troubleshooting Audio System Sound Is Weak or Distorted (Display Is Normal), or No sound is heard from speaker(s) (display is normal) troubleshooting No Sound Is Heard From the Speaker(s) (Display Is Normal).

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

Does the volume change?

YES -

Operation is normal.

NO -

Substitute a known-good audio unit Audio Unit Removal / Installation, and recheck. If the symptom/indication goes away, replace the original audio unit Audio Unit Removal / Installation.