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.
Rear door speaker removal/installation
Tweeter removal/installationMazda 6 Service Manual: Front brake (disc) inspection
Brake Judder Repair Hint
Description
Brake judder concern has the following 3 characteristics:
Steering wheel vibration
Steering wheel vibrates in the direction of its rotation. This characteristic
is most noticeable when applying brakes at a vehicle speed of 100-140 km/h
{62.1-86.8 mph}.
F ...
Mazda 6 Service Manual: Disconnection of the negative battery cable
Before beginning any work, turn the ignition switch to LOCK position,
then disconnect the negative battery cable and wait for more than 1 minute
to allow the backup power supply of the SAS unit to deplete its stored
power. Disconnecting the battery cable will delete the memories of the
...