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: Foreword
When the customer reports a vehicle malfunction, check the malfunction indicator lamp (MIL) indication and diagnostic trouble code (DTC), then diagnose the malfunction according to following flowchart. - If a DTC exists, diagnose the applicable DTC inspection. (See DTC TABLE.) - ...

Mazda 6 Service Manual: Liftgate disassembly/assembly
1. Disconnect the negative battery cable. 2. Remove the liftgate lower trim. 3. To remove the liftgate outer handle and liftgate key cylinder, remove the rear finisher. 4. To remove the stud ball, separate the stud ball and the stay damper. 5. Disassemble in the order indicated in the table. ...