Nissan Altima (L32) 2007-2012 Service Manual: AMP On signal circuit
Description
When the audio system is turned on, a voltage signal is supplied from the AV
control unit to the BOSE speaker
amp. When this signal is received, the BOSE speaker amp. will turn on.
Diagnosis Procedure
1.CHECK AMP ON SIGNAL (BOSE SPEAKER AMP)
1. Turn audio system ON.
2. Check voltage between BOSE speaker amp. harness connector
B121 terminal 60 and ground.
Is voltage greater than 6.5V?
YES >> INSPECTION END.
NO >> GO TO 2
2.CHECK AMP ON SIGNAL (AV CONTROL UNIT)
Check voltage between AV control unit harness connector M47 terminal
16 and ground.
Is voltage approximately 6.5 volts?
YES >> Repair harness or connector.
NO >> Replace AV control unit. Refer to AV-437, "Removal and
Installation".
Description
The audio unit sends audio signals to the BOSE speaker amp. The BOSE speaker
amp. amplifies the audio
signals before sending them to the subwoofers using the audio signal circuits.
Di ...
Description
When one of the steering wheel audio control switches is pushed, the
resistance in the steering switch circuit
changes depending on which button is pushed.
Diagnosis Procedure
1.CH ...
Subwoofer (sedan)
Steering switch