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 ProcedureTaking Action
Take the appropriate action and verify that the warning light turns off.
KEY Warning Light
Take the appropriate action and verify that the warning light turns off.
...
Picture Quality Adjustment
WARNING
Always adjust the picture quality of the rear view monitor while the
vehicle is stopped:
Do not adjust the picture quality of the rear view monitor while driving
the vehicle.
Adjusting the picture quality of the rear view monitor such as
brightness, contrast, colo ...
Manual Transaxle Shift Mechanism Removal/Installation [C66 M R]
1. Remove the battery cover..
2. Disconnect the negative battery cable..
3. Remove the shift lever.
a. Remove the upper panel..
b. Remove the shift lever knob.
c. Remove the shift panel..
d. Remove the side wall..
e. Remove the console..
f. Detach the clip as shown in the figure. ...