Mazda 6 Service Manual: No.20 noise occurs at idle when vehicle is stopped in all positions/ranges

No.19 excessive shift shock on torque converter clutch (tcc)

No.21 noise occurs at idle when vehicle is stopped in d, s, l ranges, or in r position

Other materials:

Mazda 6 Service Manual: Barometric pressure (baro) sensor inspection
Note Perform the following inspection only when directed. The following vacuum values are indicated by relative pressure from the barometric pressure sensor. 1. Connect the SSTs (WDS or equivalent) to the DLC-2. 2. Turn the ignition switch to ON. 3. Select BARO on the SSTs (WDS or equi ...

Mazda 6 Service Manual: Operating Tips for USB device
This unit plays audio files as follows: CAUTION Do not use an audio file extension on files other than audio files. In addition, do not change the audio file extension. Otherwise, the unit will not recognize the file correctly resulting in noise or a malfunction. NOTE Playback may not b ...