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 ProcedureMazda Radar Cruise Control
(MRCC)
The Mazda Radar Cruise Control (MRCC) system is designed to maintain headway
control *1
according to the vehicle speed using a radar sensor (front) to detect the
distance to a vehicle
ahead, and by presetting the vehicle speed between 30 km/h (19 mph) and 145 km/h
(90
mph), the driver is fr ...
Trunk Lid Key Cylinder Removal/Installation
1. Disconnect the negative battery cable..
2. Remove the trunk lid trim..
3. Lift the clip in the direction of the arrow (1), and pull out the key rod
in the direction of the arrow (2).
4. Remove the nuts.
5. Remove the trunk lid key cylinder.
6. Install in the reverse order of r ...
Antenna Feeder No.3 Removal/Installation
4SD (With Audio Unit (With Display))
1. Disconnect the negative battery cable..
2. Remove the rain sensor cover. (Vehicles with auto light/wiper system).
3. Disconnect the rain sensor connector. (Vehicles with auto light/wiper system)
4. Partially peel back the seaming welts.
5. Remove the ...