Mazda RX-8 Workshop Manual page 3426

6 Car-navigation unit and audio
amplifier connectors disconnected.
Inspect the following wiring harness
between the car-navigation unit (24-
pin) and audio amplifier.
Is there open or short circuit?
7 Disconnect the all speaker and
tweeter connectors.
Inspect both each speaker/tweeter
and wiring harness-side connector for
poor connection (such as
damaged/pulled out pins, corrosion.)
Are all the pins normal?
Terminal 1A (24-pin)
— audio amplifier
terminal 3D (FL+)
Terminal 1C (24-pin)
— audio amplifier
terminal 3C (FL-)
Terminal 1D (24-pin)
— audio amplifier
terminal 3F (FR+)
Terminal 1F (24-pin)
— audio amplifier
terminal 3E (FR-)
Terminal 1S (24-pin)
— audio amplifier
terminal 3H (RL+)
Terminal 1U (24-pin)
— audio amplifier
terminal 3G (RL-)
Terminal 1V (24-pin)
— audio amplifier
terminal 3J (RR+)
Terminal 1X (24-pin)
— audio amplifier
terminal 3I (RR+)
YesRepair or replace suspected wiring harness.
No Go to the next step.
YesGo to the next step.
If the speaker or
No
tweeter connector is
wrong:
Replace the suspect part.
(See FRONT DOOR
SPEAKER
REMOVAL/INSTALLATION.)
(See REAR SPEAKER
REMOVAL/INSTALLATION.)