Because the antenna system is equipped with a capacitor, the continuity cannot be checked. Therefore proceed the following simple inspection.
Turn the AM radio on.
Tune to the frequency that there is no broadcast and you will hear a buzzing sound.
Turn a work light on and shake it around the antenna rod. (around 10—20 mm {0.40—0.78 in})
CAUTION:
Use a fluorescent light type for the inspection. Accurate diagnostic cannot be done with a different type of light.

If a whirring sound from the speaker synchronized to the work light movement is confirmed, the antenna system is normal.
Coil Antenna Removal/Installation
Entertainment Personalization Features Setting ProcedureOil Seal (Differential) Replacement [Fw6 A EL]
1. Remove the aerodynamic under cover No.2 and the splash shield as a single
unit..
2. Remove the oil seal.
a. Drain the ATF..
b. Disconnect the drive shaft (LH) from the transaxle..
c. Disconnect the drive shaft (RH) from the joint shaft..
d. Remove the joint shaft..
CAUTION:
...
Troubleshooting
Mazda Bluetooth ® Hands-Free Customer Service
If you have any problems with Bluetooth ® , contact our toll-free customer
service center.
U.S.A.
Canada
Mexico
Bluetooth ® Device pairing, connection problems
*1 Setting which detects the existence of a device external to the Bluet ...
Operating the Compact Disc (CD) Player
Type
Playable data
Music/MP3/WMA/
AAC CD player
Music data (CD-DA)
MP3/WMA/AAC file
NOTE
If a disc has both music data (CD-DA)
and MP3/WMA/AAC files, playback of the
two or three file types differs depending on
how the disc was reco ...