Mazda 6 Service Manual: No.2 vehicle moves in n position

No.1 vehicle does not move in d, s, l ranges, or in r position

No.3 vehicle moves in p position, or parking gear does not disengage when p is disengaged

Other materials:

Mazda 6 Service Manual: Rear door speaker removal/installation
1. Disconnect the negative battery cable. 2. Remove the rear door trim. 3. Remove in the order indicated in the table. 4. Install in the reverse order of removal. Rear Door Speaker Installation Note Attach the speaker with the wiring harness placed in the groove of the door unit panel. ...

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 ...