Description
The AV control 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.
Diagnosis Procedure
1.CONNECTOR CHECK
Check the AV control unit, BOSE speaker amp. and subwoofer connectors for the following:
2.HARNESS CHECK



3.REAR SUBWOOFER SIGNAL CHECK


4.HARNESS CHECK



5.REAR SUBWOOFER SIGNAL CHECK


Rear door speaker
AMP on signal circuitExtending engine run time
The remote start feature can be extended one
time by performing the steps listed in "Remote
starting the vehicle" in this section. Run time will
be calculated as follows:
The first 10 minute run time will start when
the remote start function is performed.
The second 10 minutes will start ...
Active noise cancellation/Active sound control (if so equipped).
Active noise cancellation
Front and rear microphones
This system uses three microphones 1 located
inside the vehicle to detect engine booming
noises. The system then automatically generates
a noise canceling sound through the speakers
and woofer to reduce engine booming noise.
NOTE:
To o ...
Steering switch
Description
When one of the steering wheel audio control switches is pushed, the
resistance in steering switch circuit changes depending on which button is
pushed.
Diagnosis Procedure
1.CHECK STEERING SWITCH RESISTANCE
Disconnect steering switch connector M88.
Check resistance betwe ...