NO.3 NO SOUND FROM ALL SPEAKERS [ENTIRE AUDIO SYSTEM]
id0903e2803200
Without Bose®
3 |
No sound from all speakers/Possible DTC: 09:Er20, 09:Er21 |
---|---|
Troubleshooting hints
• Audio unit malfunction (with audio system)
• Car-navigation unit malfunction (with car-navigation system)
• Poor connection at audio unit connector, terminal damage
• Short circuit in wiring harness between audio unit/car-navigation unit
• Short circuit inside speaker
|
Diagnostic procedure
STEP |
INSPECTION |
ACTION |
|
---|---|---|---|
1
|
• Press AUDIO CONT switch more than 2 s.
• Play the CD or Radio.
• Adjust the volume between”10” to “15”.
• Is there sound?
|
Yes
|
The system is normal.
|
No
|
Go to the next step.
|
||
2
|
• Switch the ignition to off.
• Remove the audio unit/car-navigation unit.
• Disconnect the audio unit/car-navigation unit connector (24-pin).
• Inspect the continuity between the audio unit wiring harness-side connector terminal and ground:
For front door speaker
― Terminal 1A (LH+)—GND
― Terminal 1C (LH-)—GND
― Terminal 1D (RH+)—GND
― Terminal 1F (RH-)—GND
For rear door speaker
― Terminal 1S (LH+)—GND
― Terminal 1U (LH-)—GND
― Terminal 1V (RH+)—GND
― Terminal 1X (RH-)—GND
• Is there continuity?
|
Yes
|
• Repair or replace the suspect wiring harness or speaker unit.
|
No
|
Replace the audio unit/car-navigation unit.
|
With Bose®
3 |
No sound from all speakers/Possible DTC: 09:Er20, 09:Er21 |
---|---|
Troubleshooting hints
• Speaker malfunction (e.g., any foreign material, broken)
• Audio amplifier malfunction
• Open or short circuit in wiring harness between audio amplifier and speaker
• Open or short circuit in wiring harness between audio amplifier and audio unit/car-navigation unit
• Poor connection of audio unit/car-navigation unit or audio amplifier connector, terminal damage
• Short circuit inside speaker
|
Diagnostic procedure
STEP |
INSPECTION |
ACTION |
|
---|---|---|---|
1
|
• Press AUDIO CONT button more than 2 s.
• Play CD or radio.
• Adjust the volume between “10” and “15”.
• Is there sound?
|
Yes
|
The system is normal.
|
No
|
Go to the next step.
|
||
2
|
• Measure the voltage at the audio amplifier terminal 3A (8-pin, vehicle harness-side)
• Is the voltage B+?
|
Yes
|
Go to Step 4.
|
No
|
Repair or replace wiring harness between the audio amplifier and fuse.
Go to the next step.
|
||
3
|
• Is there any sound?
|
Yes
|
The system is normal.
|
No
|
Go to the next step.
|
||
4
|
• Inspect the connection of audio unit/car-navigation unit connector (24-pin) and audio amplifier connectors for poor connection (such as damaged/pulled-out pins, corrosion).
• Are all pins normal?
|
Yes
|
Go to the next step.
|
No
|
If poor connection of audio unit/car-navigation unit connector:
• Securely connect the audio unit/car-navigation unit connector.
If the audio unit/car-navigation unit or audio amplifier side connector is wrong:
• Replace the audio unit (with audio system).
• Replace the car-navigation unit (with car-navigation system).
• Replace the audio amplifier.
If the wiring harness-side connector is wrong:
• Repair or replace the pins and/or the connector.
|
||
5
|
• Inspect the continuity between the following terminals of the audio amplifier wiring harness-side connector and the audio unit/car-navigation unit wiring harness-side connector (24-pin).
• Is there continuity?
|
Yes
|
Go to the next step.
|
No
|
Repair or replace the repair related wiring harnesses.
|
||
6
|
• Switch the ignition to off.
• Disconnect the audio amplifier connector.
• Inspect the continuity between the audio amplifier connector and ground:
• Is there continuity?
|
Yes
|
Repair or replace the related wiring harness or speaker unit.
(See TWEETER REMOVAL/INSTALLATION.)
|
No
|
Go to the next step.
|
||
7
|
• Switch the ignition to off.
• Disconnect the audio amplifier connector and audio unit/car-navigation unit connector (24-pin).
• Inspect the continuity between the audio amplifier terminal 1A (40-pin, vehicle harness-side) and audio unit/car-navigation unit terminal J (24-pin, vehicle harness- side).
• Is there continuity?
|
Yes
|
Replace the audio amplifier.
|
No
|
Repair or replace the wiring harness between the audio amplifier and audio unit/car-navigation unit.
Then go to the next step.
|
||
8
|
• Is there any sound?
|
Yes
|
The system is normal.
|
No
|
Replace the audio amplifier.
|