Base Audio

FRONT TWEETER





Description
The audio unit sends audio signals to the front tweeters using the front tweeter circuits.




Diagnosis Procedure
Regarding Wiring Diagram information, Electrical Diagrams.
1.HARNESS CHECK





1. Disconnect audio unit connector M43 and suspect front tweeter connector.
2. Check continuity between audio unit harness connector M43 (A) and suspect front tweeter harness connector (B).





3. Check continuity between audio unit harness connector M43 (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.FRONT TWEETER SIGNAL CHECK






1. Connect audio unit connector M43 and front tweeter connector.
2. Turn ignition switch to ACC.
3. Push audio unit "POWER" switch.
4. Check the signal between audio unit harness connector M43 terminals with CONSULT-III or oscilloscope.





Is the audio signal voltage as specified?
YES - Replace the suspect front tweeter. Removal And Installation Base Audio, "Removal and Installation".
NO - Replace audio unit. Removal And Installation (Type 2).