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: Front door speaker removal/installation
1. Disconnect the negative battery cable. 2. Remove the front door trim. 3. Remove in the order indicated in the table. 4. Install in the reverse order of removal. Front Door Speaker Installation Note Attach the speaker with the wiring harness placed in the groove of the door unit panel. ...

Mazda 6 Service Manual: Panel light control switch inspection
1. Connect the connector to the panel light control switch. 2. Connect the negative battery cable. 3. Measure the voltage at the panel light control switch using voltmeter. When inspecting terminal B for continuity, disconnect the panel light control switch connector. 4. If the value are ...