Amp On Signal Circuit

AMP ON SIGNAL CIRCUIT


Description

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




AMP ON SIGNAL CIRCUIT


Diagnosis Procedure

1.CHECK AMP ON SIGNAL
1. Turn audio system ON.





2. Check voltage between audio amp. harness connector B159 terminal 9 and ground.

9 - Ground : More than 6.5V

Is battery voltage present?
YES - Inspection End.
NO - GO TO 2
2.CHECK AMP ON SIGNAL (AUDIO UNIT)





Check voltage between audio unit harness connector M44 terminal
12 and ground.

12 - Ground : More than 6.5V

Is battery voltage present?
YES - Repair harness or connector.
NO - Replace audio unit. Refer to Premium Audio.