Scheme 1
Reference 1 ... Refer to " SYMPTOM TABLE ".
Component Description
| Part name | Description |
|---|---|
| Audio unit | Controls audio system functions. |
| Front speaker | Outputs sound signal from audio unit. Outputs high, mid and low range sounds. |
| Tweeter | Outputs sound signal from audio unit. Outputs high range sounds. |
| Rear speaker | Outputs sound signal from audio unit. Outputs high, mid and low range sounds. |
| Radio antenna (Built-in antenna amp.) | Radio signal received by radio antenna is amplified and sent to audio unit. Power (antenna amp. ON signal) is supplied from audio unit. |
| Steering switch | Each audio operation can be operated. Steering switch signal (operation signal) is output to audio unit. |
COMPONENT DESCRIPTION
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
Scheme 2
Scheme 3
- Turn ignition switch to the ON 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.
Version Check
Scheme 4
Scheme 5
Scheme 6
Scheme 7
- 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).
Channel Check Diagnostics
When all segments are illuminated, press the "TUNE" up switch to enter channel check diagnostics. The self-diagnostic function will then send a tone to each channel (FL, RL, RR, FR) for 1 second.
Scheme 8
Button Check Diagnostics
When all segments are illuminated, press the "TUNE" down switch to enter button check diagnostics. When each audio unit switch is pressed, a tone will sound and the switch name will be displayed.
Scheme 9
Description
Transmits the steering switch signal to audio unit.
Transmits the steering switch signal to audio unit.
Transmits the steering switch signal to audio unit.
| Part name | Description |
|---|---|
| Audio unit | Controls audio system and satellite radio system functions. |
| BOSE amp. | Receives power (amp. ON) and sound signals from audio unit, and outputs sound signals to each speaker. Woofer amp. ON signal is output to woofer. |
| Steering switch | Each audio operation can be operated. Steering switch signal (operation signal) is output to audio unit. (without hands-free phone system) Steering switch signal (operation signal) is output to audio unit through TEL adapter unit. (with hands-free phone system) |
| Front speaker | Outputs sound signal from BOSE amp. Outputs high, mid and low range sounds. |
| Tweeter | Outputs sound signal from BOSE amp. Outputs high range sounds. |
| Center speaker | Outputs sound signal from BOSE amp. Outputs mid and high range sounds. |
| Rear speaker | Outputs sound signal from BOSE amp. Outputs high, mid and low range sounds. |
| Woofer | Woofer amp. ON signal is input from BOSE amp. Outputs sound signal from BOSE amp. Outputs low range sounds. |
| Radio &satellite radio antenna | Radio antenna Radio signal received by radio antenna is amplified and sent to audio unit. Power (antenna amp. ON signal) is supplied from audio unit. Satellite radio antenna Sound signal (satellite radio) is received and output to audio unit. |
| Satellite radio tuner | Receives radio signals from satellite antenna. Sends sound signals to audio unit. |
COMPONENT DESCRIPTION
System Description
- The connection between portable telephone and TEL adapter unit is performed with Bluetooth® communication.
- The voice guidance signal is input from the TEL adapter unit to the audio unit and output via BOSE amp. to the front speaker when operating the telephone.
- TEL adapter unit has the on board self-diagnosis function. Refer to " «DIAGNOSIS DESCRIPTION»(ref-295145-S03255878252008081400000) ".
When receiving a call
Telephone voice signal received with the portable telephone is input from TEL antenna via TEL adapter unit to audio unit with Bluetooth communication and output via BOSE amp. to the front speaker. The operation is performed with the steering switch or voice recognition function.
When a call is originated
Speech sound (telephone voice signal) is input from the microphone to the TEL adapter unit. It is input from the TEL antenna via Bluetooth communication to the portable telephone. It is transmitted to the phone on the other side. The operation is performed with the steering switch or voice recognition function.
Scheme 10
| Part name | Description |
|---|---|
| Audio unit | Receives telephone voice signal from TEL adapter unit. Sends telephone voice and voice guidance signals to BOSE amp. Audio unit and TEL adapter unit exchange data by AV communication, and control audio unit display. |
| BOSE amp. | Inputs power (amp. ON) and sound signal from audio unit, and outputs sound signal to each speaker. |
| Front door speaker | Receives telephone voice and voice guidance signals from BOSE amp. |
| Tweeter | |
| Center speaker | |
| Steering switch | The hands free phone system can be operated. Steering switch signal (operation signal) is output to audio unit through TEL adapter unit. |
| Microphone | Uses when operating the hands-free phone. Outputs microphone signal (telephone voice signal) to the TEL adapter unit. The power (microphone power supply) is supplied from the TEL adapter unit. |
| TEL adapter unit | Receives the steering switch signal (operation signal) from the steering switch. Inputs the telephone voice signal from TEL antenna during reception and outputs into the audio unit. Inputs the telephone voice signal from microphone during speech recognition and outputs it to the TEL antenna. |
| TEL antenna | Connects with the portable telephone via Bluetooth® communication and communicates the telephone voice signal. |
COMPONENT 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
OPERATION PROCEDURE
- Turn ignition switch to the ON 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.
Version Check
- 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).
Channel Check Diagnostics
When all segments are illuminated, press the "TUNE" up switch to enter channel check diagnostics. The self-diagnostic function will then send a tone to each channel (FL, RL, RR, FR) for 1 second.
Button Check Diagnostics
When all segments are illuminated, press the "TUNE" down switch to enter button check diagnostics. When each audio unit switch is pressed, a tone will sound and the switch name will be displayed.
- Transmits the steering switch signal to TEL adapter unit.
- Transmits the steering switch signal to audio unit through TEL adapter unit.
- Transmits the steering switch signal to TEL adapter unit.
- Transmits the steering switch signal to audio unit through TEL adapter unit.
- Transmits the steering switch signal to TEL adapter unit.
- Transmits the steering switch signal to audio unit through TEL adapter unit.
- Transmits the steering switch signal to TEL adapter unit.
- Transmits the steering switch signal to audio unit through TEL adapter unit.
- Transmits the steering switch signal to TEL adapter unit.
- Transmits the steering switch signal to audio unit through TEL adapter unit.
- Transmits the steering switch signal to TEL adapter unit.
- Transmits the steering switch signal to audio unit through TEL adapter unit.
Satellite radio tuner and audio unit are connected with a serial communication. They transmit the operation signal from audio unit to satellite radio tuner.
Scheme 11
Scheme 12
- CHECK CONTINUITY COMMUNICATION SIGNAL (AUDIO-SAT) CIRCUIT Turn ignition switch OFF. Disconnect satellite radio tuner connector and audio unit connector. Check continuity between satellite radio tuner harness connector terminals 9, 10 and audio unit harness connector terminals 39, 40. 9 - 39 : Continuity should exist. 10 - 40 : Continuity should exist. Check continuity between satellite radio tuner harness connector terminals 9, 10 and ground. 9, 10 - Ground : Continuity should not exist. Is inspection result OK? YES: GO TO 2. NO: Repair harness or connector.
- CHECK AUDIO UNIT Connect audio unit connector. Turn ignition switch ON. Check voltage between audio unit harness connector terminal 39 and ground. 39 - Ground : Approx. 4 V Is inspection result OK? YES: GO TO 3. NO: Replace audio unit.
- CHECK SATELLITE RAIDIO TUNER Turn ignition switch OFF. Disconnect audio unit connector, and connect satellite radio tuner connector. Turn ignition switch ON. Check voltage between satellite radio tuner harness connector terminal 10 and ground. 10 - Ground : Approx. 7.5 V Is inspection result OK? YES: GO TO 4. NO: Replace satellite radio tuner.
- CHECK COMMUNICATION SIGNAL (SAT-AUDIO) Turn ignition switch OFF. Connect audio unit connector. Turn ignition switch ON. Check signal between satellite radio tuner harness connector terminal 9 and ground. TERMINALS SIGNAL REFERENCE 9 - Ground When satellite radio mode is selected. Is inspection result OK? YES: GO TO 5. NO: Replace satellite radio tuner.
- CHECK COMMUNICATION SIGNAL (AUDIO-SAT) Check signal between audio unit harness connector terminal 40 and ground. TERMINALS SIGNAL REFERENCE 40 - Ground When satellite radio mode is selected. Is inspection result OK? YES: INSPECTION END NO: Replace audio unit.
Request signal transmits the signal to recognize the connection of satellite radio tuner from satellite radio tuner to audio unit.
Scheme 13
- CHECK CONTINUITY REQUEST SIGNAL CIRCUIT Turn ignition switch OFF. Disconnect satellite radio tuner connector and audio unit connector. Check continuity between satellite radio tuner unit harness connector terminal 8 and audio unit harness connector terminal 38. 8 - 38 : Continuity should exist. Check continuity between satellite radio tuner harness connector terminal 8 and ground. 8 - Ground : Continuity should not exist. Is inspection result OK? YES: GO TO 2. NO: Repair harness or connector.
- CHECK AUDIO UNIT Connect audio unit connector. Turn ignition switch ON. Check voltage between audio unit harness connector terminal 38 and ground. 38 - Ground : Approx. 4 V Is inspection result OK? YES: GO TO 3. NO: Replace audio unit.
- CHECK CONTINUITY REQUEST SIGNAL Turn ignition switch OFF. Connect satellite radio tuner connector. Turn ignition switch ON. Check signal between satellite radio tuner harness connector terminal 8 and ground. TERMINALS SIGNAL REFERENCE 8 - Ground When satellite radio mode is selected. Is inspection result OK? YES: INSPECTION END NO: Replace satellite radio tuner.
When the audio system is turned on, a voltage signal is supplied from the audio unit to the BOSE amp. When this signal is received, the BOSE amp. will turn on.
When the audio system is turned on, a voltage signal is supplied from the BOSE amp. to the woofer. When this signal is received, the woofer will turn on.
Supply power from TEL adapter unit to microphone. The microphone transmits the sound voice to the TEL adapter unit.
When telephone is being used. TEL adapter unit transmits telephone ON signal to audio unit.