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 ProcedureSaving Fuel and Protection of the
Environment
How you operate your Mazda determines
how far it will travel on a tank of fuel. Use
these suggestions to help save fuel and
reduce CO2.
Avoid long warm-ups. Once the engine
runs smoothly, begin driving.
Avoid fast starts.
Drive at lower speeds.
Anticipate when to apply the brakes
(a ...
Operational Range
The system operates only when the driver
is in the vehicle or within operational
range while the key is being carried.
Starting the Engine
NOTE
Starting the engine may be possible
even if the key is outside of the vehicle
and extremely close to a door and
window, however, always start ...
Brake Pedal Removal/Installation
CAUTION:
The clearance between the brake switch and the brake pedal is automatically
adjusted to the correct amount when the brake switch is inserted into the installation
hole on the brake pedal and rotated to fix in place. If the brake switch is
not properly installed, the clearan ...