SYSTEM DESCRIPTION
AUDIO SYSTEM
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 audio unit then sends audio signals to the front door speakers, tweeters, rear door speakers, subwoofer amp. and subwoofers.
Refer to Owner's Manual for audio system operating instructions.
Component Parts Location

Component Description
| Part name | Description |
| Audio unit | Controls audio and AUX IN system functions |
| Steering wheel audio control switches |
|
| Front door speakers |
|
| Tweeters |
|
| Rear door speakers |
|
| Bluetooth control unit |
|
| Display unit |
|
| Subwoofer amp |
|
| Subwoofers |
|
Diagnosis and repair workflow
Hands-free phone systemPower supply and ground circuit
CLIMATE CONTROLLED SEAT CONTROL UNIT
CLIMATE CONTROLLED SEAT CONTROL UNIT : Diagnosis Procedure
Regarding Wiring Diagram information, refer to SE-44, "Wiring Diagram".
1.CHECK FUSES
2.CHECK BATTERY POWER SUPPLY CIRCUIT
Turn ignition switch OFF.
Disconnect climate controlled seat control ...
Instrument Panel
Vent
Headlight/fog light/turn signal switch
Supplemental front-impact air bag. Horn
Meters and gauges. Warning and indicator lights. Vehicle information
display
Paddle shifters (if so equipped)
Wiper and washer switch
Audio controls*. Navigation controls*
Hazard warning ...
C1147, C1148, C1149, C1150 USV/HSV line
Description
USV1, USV2 (CUT VALVE)
The cut valve shuts off the normal brake fluid path from the master cylinder,
when VDC/TCS is activated.
HSV1, HSV2 (SUCTION VALVE)
The suction valve supplies the brake fluid from the master cylinder to the
pump, when VDC/TCS is activated.
DTC Logic
DTC D ...