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Component Description
| Part name | Description |
|---|---|
| Audio unit | Controls audio system and satellite radio system functions |
| Steering wheel audio control switches | Each audio operation can be operated Steering switch signal (operation signal) is output to audio unit |
| Door speakers | Outputs audio signal from audio unit Outputs high, mid and low range sounds |
| Front tweeters | Outputs audio signal from audio unit Outputs high range sounds |
| Rear speakers | Outputs audio signal from audio unit Outputs high, mid and low range sounds |
| Satellite radio tuner | Receives radio signals from satellite antenna Sends audio signals to audio unit |
| Satellite antenna | Audio signal (satellite radio) is received and output to audio unit. |
Diagnosis Description
Self-diagnosis mode can check the following items.
- Audio unit hardware/software versions
- Continuity of each speaker channel
- Continuity of each audio unit switch
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- Turn ignition switch to the ACC position.
- Turn the audio unit off.
- While pressing the "AUDIO" button, turn the volume control dial clockwise or counterclockwise 30 clicks or more. When the self-diagnosis mode is started, a short beep will be heard.
- Initially, all display segments will be illuminated.
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- Press the "AUDIO" switch to enter version diagnostics. "Software" (audio software version) is displayed.
- Press the "AUDIO" switch again to display the "Hardware" (audio hardware version).
- Press the "AUDIO" switch again to display the "CD Mech" (CD mechanism version).
- Press the "AUDIO" switch again to display the "SDARS" (satellite radio version).
Description
The audio unit sends audio signals to the door speakers using the door speaker circuits.
The audio unit sends audio signals to the front tweeters using the door speaker circuits.
The audio unit sends audio signals to the rear speakers using the rear speaker circuits.
When one of the steering wheel audio control switches is pushed, the resistance in steering switch circuit changes depending on which switch is pushed.
SATELLITE RADIO TUNER: Description
Communication signals are exchanged between the audio unit and satellite radio tuner using the communication circuits.
Left and right channel audio signals are supplied from the satellite radio tuner to the audio unit through the sound signal circuits.