Volume does not change
NOTE:
- Check the vehicle battery condition first (see 12 VOLT BATTERY TEST ).
- Check the connectors for poor connections or loose terminals.
- Set the fader and balance positions to the center.
- If the volume button does not change volume with the audio remote switch on the steering wheel, go to AUDIO REMOTE SWITCH DOES NOT WORK PROPERLY (with navigation) , (without navigation) (see AUDIO REMOTE SWITCH DOES NOT WORK PROPERLY (WITHOUT NAVIGATION) ).
- Turn the ignition switch to ON (II).
- Turn on the audio-navigation unit or audio unit, and check for sound in each mode (AM, FM, and CD).
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 THE SPEAKER(S) (WITH 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.
NO -
- With navigation: Substitute a known-good audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ), and recheck. If the symptom/indication goes away, replace the original audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ).
- Without navigation: Substitute a known-good audio unit (see AUDIO UNIT REMOVAL/INSTALLATION ), and recheck. If the symptom/indication goes away, replace the original audio unit (see AUDIO UNIT REMOVAL/INSTALLATION ).