Diesel Data: Automotive Repair

Volume Does Not Change




Audio System Symptom Troubleshooting - Volume does not change

Volume does not change

NOTE:

- Check the vehicle battery condition first Testing and Inspection.
- Check the connectors for poor connections or loose terminals.
- Set the fader and balance positions to the center.

1. Listen for sound from the speakers.

Is the sound normal?

YES -

Go to step 2.

NO -

Go to audio system sound is weak or distorted Audio System Sound Is Weak Or Distorted (Display Is Normal), or no sound is heard from speakers:

- '07 models with premium audio system.�
- '07 models without premium audio system.�
- '08-10 models with premium audio system No Sound Is Heard From Speaker(s) (Display Is Normal) (08-10 Models With Premium Audio System).�

- '08-10 models without premium audio system No Sound Is Heard From The Speaker(s) (Display Is Normal) (Without Premium Audio System).�

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

Does the volume change?

YES -

Operation is normal.�

NO -

Replace the audio unit Audio Unit Removal/Installation.�