NO SOUND FROM SOME SPEAKERS [ENTIRE AUDIO SYSTEM]
id0903e2100800
Without Bose®
Possible DTC |
No sound from some speakers |
|
---|---|---|
— |
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Possible cause
|
• Speaker muted by audio unit sound adjustment
• Open or short circuit in wiring harness between audio unit and speaker
• Speaker malfunction (e.g., any foreign material, broken)
• Short circuit inside speaker
• Audio unit malfunction
|
Diagnostic procedure
STEP |
INSPECTION |
ACTION |
|
---|---|---|---|
1
|
• Verify the audio unit sound adjustment.
• Does the fader/balance operate?
|
Yes
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The system is normal. Explain to the customer that the speaker is muted by the audio unit sound setting.
|
No
|
Go to the next step.
|
||
2
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• Switch the ignition to off.
• Inspect the connection of the audio unit connector (24-pin). (for sound signal line)
• Is the connector connected securely?
|
Yes
|
Go to the next step.
|
No
|
Connect the audio unit connector (24-pin) securely.
|
||
3
|
• Switch the ignition to off.
• Remove the audio unit.
• Disconnect the audio unit connector (24-pin).
• Inspect the continuity between the audio unit wiring harness-side connector terminal and ground:
For front door speaker
For rear door speaker
• Disconnect the front door speaker connector (4-pin)
• Inspect the continuity between the front door speaker wiring harness-side connector terminal and ground:
For tweeter
• Is there continuity?
|
Yes
|
Repair or replace the suspect wiring harness or speaker unit.
|
No
|
Go to the next step.
|
||
4
|
• Disconnect the speaker connector (4-pin), tweeter connector (2-pin) and inspect the resistance of speaker.
• Inspect the continuity between the audio unit wiring harness-side connector terminal and speaker wiring harness-side connector:
Audio unit—front door speaker
Audio unit—rear door speaker
Audio unit—tweeter
• Is there continuity?
|
Yes
|
Go to the next step.
|
No
|
Repair or replace the suspect wiring harness or speaker unit.
|
||
5
|
• Inspect the suspect speaker.
• Is the speaker normal?
|
Yes
|
Replace the audio unit.
|
No
|
Replace the speaker.
(See TWEETER REMOVAL/INSTALLATION.)
|
With Bose®
Possible DTC |
No sound from some speakers |
|
---|---|---|
— |
||
Possible cause
|
• Speaker muted by audio unit sound adjustment
• Poor connection of audio unit connector, terminal damage
• Poor connection of audio amplifier connector
• Open or short circuit in wiring harness between audio amplifier and audio unit
• Open or short circuit in wiring harness between audio amplifier and speaker
• Audio unit malfunction
• Short circuit inside speaker
• Speaker malfunction (e.g., foreign material, broken)
|
Diagnostic procedure
STEP |
INSPECTION |
ACTION |
|
---|---|---|---|
1
|
• Verify the audio unit sound adjustment.
• Does the fader/balance operate?
|
Yes
|
The system is normal. Explain to the customer that the speaker is muted by the audio unit sound setting.
|
No
|
Go to the next step.
|
||
2
|
• Does the same speaker have no sound if changing the sound source? (Radio, CD)
|
Yes
|
Go to the next step.
|
No
|
Replace the audio unit.
|
||
3
|
• Switch the ignition to off.
• Inspect the connection of the audio unit connector (24-pin). (for sound signal line)
• Is the connector connected securely?
|
Yes
|
Go to the next step.
|
No
|
Connect the audio unit connector (24-pin) securely.
|
||
4
|
• Switch the ignition to off.
• Remove the audio unit.
• Disconnect the audio unit connector (24-pin).
• Inspect the continuity between the audio unit wiring harness-side connector and ground.
• Is there continuity?
|
Yes
|
Repair or replace the related wiring harness
|
No
|
Go to the next step.
|
||
5
|
• Inspect the continuity between the following terminals of the audio amplifier wiring harness-side connector (16-pin) and the audio unit wiring harness-side connector (24-pin).
• Is there continuity?
|
Yes
|
Go to the next step.
|
No
|
Repair or replace the related wiring harness between the audio amplifier and the audio unit.
Then go to the next step.
|
||
6
|
• Inspect the connection of the audio amplifier connector.
• Is the connector connected securely?
|
Yes
|
Go to the next step.
|
No
|
Connect the audio amplifier securely.
|
||
7
|
• Switch the ignition to off.
• Disconnect the audio amplifier connector.
• Inspect continuity between the following terminals of the audio amplifier connector and speaker connector.
For front door speaker (LH)
For front door speaker (RH)
For tweeter (LH)
For tweeter (RH)
For rear door speaker (LH)
For rear door speaker (RH)
For front center speaker
For D-pillar speaker
• Is there continuity?
|
Yes
|
Go to the next step.
|
No
|
Repair or replace the repair related wiring harnesses.
|
||
8
|
• Switch the ignition to off.
• Disconnect the audio amplifier connector.
• Inspect the continuity between the audio amplifier connector and ground:
For front door speaker (LH)
For front door speaker (RH)
For tweeter (LH)
For tweeter (RH)
For rear door speaker (LH)
For rear door speaker (RH)
For front center speaker
For D-pillar speaker
• Is there continuity?
|
Yes
|
Repair or replace the related wiring harness or speaker.
(See TWEETER REMOVAL/INSTALLATION.)
|
No
|
Go to the next step.
|
||
9
|
• Inspect the suspect speaker.
• Is the speaker normal?
|
Yes
|
Replace the audio unit.
|
No
|
Replace the speaker.
(See TWEETER REMOVAL/INSTALLATION.)
|