Base Audio

TWEETER (SEDAN)


Description

The audio unit sends audio signals to the tweeters using the door speaker circuits.





TWEETER (SEDAN)


Diagnosis Procedure

Regarding Wiring Diagram information, refer to Base Audio.
1.HARNESS CHECK





1. Disconnect audio unit connector M85 (A) and suspect tweeter connector (B).
2. Check continuity between audio unit harness connector M85 (A) and suspect tweeter harness connector (B).





3. Check continuity between audio unit harness connector M85 (A) and ground.






Are the continuity results as specified?
YES - GO TO 2
NO - Check connector housings for disconnected or loose terminals.
- Repair harness or connector.
2.TWEETER SIGNAL CHECK





1. Connect audio unit connector and tweeter connector.
2. Turn ignition switch to ACC.
3. Push "POWER" switch.
4. Check the signal between audio unit harness connector terminals with CONSULT-III or oscilloscope.





Is the audio signal voltage as specified?
YES - Replace tweeter. Refer to Base Audio.
NO - Replace audio unit. Refer to Base Audio.