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: Recording of Vehicle Data
This vehicle is equipped with a computer which records the following main vehicle data related to vehicle controls, operation, and other driving conditions. Recorded data Vehicle conditions such as engine speed and vehicle speed Driving operation conditions such as accelerator and brake ped ...

Mazda 6 Service Manual: Air intake actuator inspection
1. Connect battery positive voltage to terminal D or F and ground to terminal F or D of the air intake actuator. 2. Verify that the air intake actuator operates as shown below. If not as specified, replace the air intake actuator. ...