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MODE CHANGE SIGNAL CIRCUIT





Description
- AV control unit transmits the mode change signal to BOSE amp.
- Driver's Audio Stage controls the speaker's output characteristic by BOSE amp. so that the driver's seat is to be the center of sounds.




Diagnosis Procedure
1.CHECK CONTINUITY MODE CHANGE SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BOSE amp. connector and AV control unit connector.
3. Check continuity between BOSE amp. harness connector and AV control unit harness connector.





4. Check continuity between BOSE amp. harness connector and ground.





Is the inspection result normal?
YES - GO TO 2.
NO - Repair harness or connector.
2.CHECK MODE CHANGE SIGNAL
1. Connect BOSE amp. connector.
2. Turn ignition switch ON.
3. Check signal between BOSE amp. harness connector and ground.





Is the inspection result normal?
YES - Replace AV control unit. Exploded View Without Navigation.
NO - Replace BOSE amp. Exploded View Without Navigation.