Mazda RX-8 Workshop Manual page 3336

10 Turn ignition switch to LOCK position.
Measure continuity between antenna feeder
axis and ground.
Is there any continuity?
11 Compare reception with other audio
unit/car-navigation unit on same model
(model/unit) under same problem
conditions.
Is reception equivalent between customer's
unit and compared unit?
NOTE:
Due to following differences, you may feel
difference in reception efficiency.
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(Vehicle side factor)
Antenna installation
location, height, feeder
wiring routing, optional
electrical equipment
(Audio unit/car-
navigation unit factor)
Volume concern type: It
decreases change of
volume when signals
become weak. (Noise is
easy to be conspicuous)
Noise decrease type: It
decreases volume when
signals become weak, so
that noise is not
conspicuous.
© 2010 Mazda North American Operations, U.S.A.
YesReplace antenna feeder.
No Go to the next step.
YesThe system is normal.
(It is caused by electronic jamming
from outside, or inferior broadcasting
station signal condition.)
No Replace audio unit/car-navigation
unit.
(See CENTER PANEL UNIT
REMOVAL/INSTALLATION.)
(See CENTER PANEL UNIT
DISASSEMBLY/ASSEMBLY.)
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