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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 and AV control unit connector.
2.Turn ignition switch ON.
3.Check voltage between BOSE amp. harness connector and ground.





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