Bose AMP On Signal Circuit

BOSE AMP. ON SIGNAL CIRCUIT


Description

When the audio system is turned on, a voltage signal is supplied from the audio unit to the BOSE amp. When this signal is received, the BOSE amp. will turn on.




BOSE AMP. ON SIGNAL CIRCUIT


Diagnosis Procedure

1.CHECK CONTINUITY AMP. ON SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect audio unit connector and BOSE amp. connector.
3. Check continuity between audio unit harness connector and BOSE amp. harness connector.





4. Check continuity between audio unit harness connector and ground.





Is inspection result OK?
YES - GO TO 2.
NO - Repair harness or connector.
2.CHECK VOLTAGE AMP. ON SIGNAL
1. Connect audio unit connector.
2. Turn ignition switch ON.
3. Check voltage between audio unit harness connector and ground.





Is inspection result OK?
YES - Replace BOSE amp.
NO - Replace audio unit.