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 ProcedureAir Mix Actuator Removal/Installation [Full Auto Air Conditioner]
Driver-side
1. Disconnect the negative battery cable..
2. Disconnect the connector.
3. Remove the hook (1), remove the rod (2) from the air mix actuator link.
4. Remove the screw.
5. Remove the driver-side air mix actuator.
6. Install in the reverse order of removal.
Passenger- ...
Clutch Pedal Position (CPP) Switch Inspection [Mzr 2.0, Mzr 2.5]
Continuity Inspection
1. Verify that the CPP switch is installed properly..
2. Remove the battery cover..
3. Disconnect the negative battery cable..
4. Disconnect the CPP switch connector..
5. Verify that the continuity between CPP switch terminals A and B when the clutch
pedal is depress ...
Transmission/Transaxle SST
1: Mazda SST number
2: Global SST number
Example
1:49 UN30 3009
2:303-009
Crankshaft damper remover
Clutch [G35M-R]
1:49 E011 1A0
2: –
Ring gear brake set
1:49 SE01 310A
2: –
Clutch disc center ...