1. Inspect for resistance between the rear door speaker terminals using an ohmmeter.
2. To verify that the rear door speaker outputs sound, apply voltage to the rear door speaker and release using a 1.5-V battery.
Mazda 6 Service Manual: Diagnostic assist function
Structural View
Switch location
LCD Inspection
1. With audio on, first press the POWER button, then simultaneously press the
SEEK button (upper) for approximately 1 second.
2. Inspect the LCD according to the following table:
3. Turn the audio off or the ignition switch to the LOCK posi ...
Mazda 6 Service Manual: Viewing the Display
Guide lines which indicate the width of the vehicle (yellow) are displayed on
the screen as a reference to the approximate width of the vehicle in comparison
to the width of the parking space you are about to back into.
Use this display view for parking your vehicle in a parking space or garage ...