Volume does not change
NOTE:
- Check the vehicle battery condition first BATTERY TEST
- Check the connectors for poor connections or loose terminals.
- Set the fader and balance positions to the center.
- On vehicles with navigation, check the audio button operation by doing the hard key status test (see TOUCH PANEL CALIBRATION ) in the audio-navigation unit check screen. See the navigation system diagnostic mode (see SYSTEM DIAGNOSTIC MODE ).
- Turn the ignition switch to ON (II).
- Turn on the audio unit or audio-navigation unit, and check for sound in each mode (AM, FM, and CD).
Is the sound normal?
YES -Go to step 3.
NO -Go to SOUND QUALITY DIAGNOSIS and No sound is heard from the speaker(s) (display is normal).
- With navigation (see AUDIO UNIT POWER SWITCH WILL NOT TURN OFF (WITHOUT NAVIGATION) ).
- Without navigation (see NO SOUND IS HEARD FROM THE SPEAKER(S) (DISPLAY IS NORMAL) (WITHOUT NAVIGATION) ).
- Operate the volume knob to see if the volume changes.
Does the volume change?
YES -Operation is normal at this time.
NO -
- With navigation: Replace the audio-navigation unit (see SD MODULE REMOVAL/INSTALLATION ).
- Without navigation: Replace the audio unit (see AUDIO UNIT REMOVAL/INSTALLATION ).