Mazda 3 Service Manual: Confirmation Step 3: Antenna System Simple Inspection [Radio]

Mazda 3 Service Manual / Accessories / Electronics / Entertainment / Confirmation Step 3: Antenna System Simple Inspection [Radio]

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.

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