System Diagram

System Description
AUDIO SYSTEM
The audio system consists of the following components
When the audio system is on, radio signals are received by the window antenna. The AV control unit then sends audio signals to the BOSE speaker amp. The BOSE speaker amp. amplifies the audio signals before sending them to the front door speakers, tweeters, center speaker, rear door speakers and rear subwoofers.
Refer to Owner's Manual for audio system operating instructions.
SATELLITE RADIO SYSTEM (IF EQUIPPED)
The satellite radio system consists of the following components
When the satellite radio system is on, radio signals are supplied to the satellite radio tuner from the satellite antenna. The satellite radio tuner then sends audio signals to the AV control unit.
Refer to Owner's Manual for satellite radio system operating instructions.
SPEED SENSITIVE VOLUME SYSTEM
Volume level of this system goes up and down automatically in proportion to the vehicle speed. The control level can be selected by the customer. Refer to Owner's Manual for operating instructions.
Component Parts Location

Component Description
| Part name | Description |
| AV control unit | Controls audio system, USB connection,AUX IN connection and satellite radio system functions |
| Display unit | Displays all audio and climate control related information |
| BOSE speaker amp. | Receives power (amp ON) and audio signals from AV control unit and outputs audio signals to each speaker. |
| Steering wheel audio control switches |
|
| Front door speakers |
|
| Tweeters |
|
| Center speaker |
|
| Rear door speakers |
|
| Rear subwoofer |
|
| Satellite radio tuner (if equipped) |
|
| Satellite antenna (if equipped) | Audio signal (satellite radio) is received and output to AV control unit. |
Rear view monitor systemU1255 satellite radio tuner
Description
DTC Logic
Diagnosis Procedure
1.CHECK SATELLITE RADIO TUNER POWER SUPPLY AND GROUND CIRCUIT
Check satellite radio tuner power supply and ground circuit.
2.CHECK CONTINUITY COMMUNICATION CIRCUIT AND REQUEST SIGNAL CIRCUIT
Turn ignition switch OFF.
Disconnect AV cont ...
Parking brake switch
Description
The parking brake switch converts the status of the parking brake pedal to an
electric signal and transmits it to
the combination meter. The combination meter, through CAN communication,
transmits the signal to the ABS
actuator and electric unit (control unit).
Component Functi ...
Unexpected pedal reaction
Diagnosis Procedure
1.CHECK BRAKE PEDAL STROKE
Check brake pedal stroke.
2.CHECK FUNCTION
Disconnect ABS actuator and electric unit (control unit) connector to
deactivate ABS. Check if braking force is
normal in this condition.Connect connector after inspection.
3.CHECK WHEEL SENSOR AND SEN ...