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 ProcedureRecommended Oil
U.S.A., Canada, and Puerto Rico
Use SAE 0W-20 engine oil.
Mazda Genuine Oil is used in your
Mazda vehicle. Mazda Genuine 0W-20
Oil is required to achieve optimum fuel
economy.
For maintenance service, Mazda
recommends Mazda Genuine Parts and
Castrol ® (U.S.A. only).
Only use SAE 0W ...
Variable Valve Timing Actuator Inspection [Mzr 2.3 Disi Turbo]
CAUTION:
Variable valve timing actuator cannot be disassembled because it is a precision
unit.
1. Remove the battery cover..
2. Disconnect the negative battery cable..
3. Remove the charge air cooler..
4. Remove the ignition coils..
5. Disconnect the ventilation hose from th ...
Power Brake Unit Removal/Installation [Mzr 2.0, Skyactiv G 2.0, Mzr 2.5]
CAUTION:
Once the brake switch clearance has automatically been adjusted, it cannot
be adjusted again. Therefore, replace the switch with a new one when replacing
the power brake unit or performing any procedure that changes the pedal stroke.
Secure the steering wheel using tap ...