NO.4 NO SOUND FROM CERTAIN SPEAKER [ENTIRE AUDIO SYSTEM]
id0903e2803300
Vehicles Without Bose®
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4 |
No sound from certain speaker/Possible DTC: — |
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Troubleshooting hints
• Speaker malfunction (e.g., any foreign material, broken)
• Audio unit malfunction
• Short circuit inside speaker
• Open or short circuit in wiring harness between audio unit and speaker
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Diagnostic procedure
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STEP |
INSPECTION |
ACTION |
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|---|---|---|---|
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1
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• Turn the audio unit to ON.
• Press both POWER and AUTO-M buttons more than 0.2 s at the same time.
• Is there any speaker with no sound?
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Yes
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If no sound from some speaker:
• Go to the next step.
If no sound at all:
• Go to the troubleshooting of “No.3 No sound from all speakers”.
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No
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The troubleshooting is completed.
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2
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• Turn the ignition switch to the LOCK position.
• Disconnect the audio unit connector (24-pin).
• Inspect the continuity between the audio unit wiring harness-side connector (24-pin) terminal and ground.
• Is there continuity?
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Yes
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Repair or replace the suspect wiring harness or speaker unit.
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No
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Go to the next step.
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3
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• Remove the suspect speaker.
• Disconnect the speaker connector (2-pin) and inspect the resistance of speaker.
• Is the resistance normal?
Specification
Speaker resistance + wiring harness resistance.
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Yes
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Replace the audio unit.
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No
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Go to the next step.
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4
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• Inspect the wiring harness between the audio unit and the suspect speaker.
• Is there continuity?
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Yes
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Go to the next step.
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No
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Repair or replace the suspect wiring harness.
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5
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• Inspect the suspect speaker.
• Is the speaker normal?
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Yes
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Replace the audio unit.
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No
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Go to the next step.
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Vehicles With Bose®
|
4 |
No sound from certain speaker/Possible DTC: — |
|---|---|
|
Troubleshooting hints
• Speaker malfunction (e.g., foreign material, broken)
• Audio amplifier malfunction
• Short circuit inside speaker
• 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
• Poor connection of audio unit connector, terminal damage
• Poor connection of audio amplifier connector
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|
Diagnostic procedure
|
STEP |
INSPECTION |
ACTION |
|
|---|---|---|---|
|
1
|
• Turn the audio unit on.
• Press the POWER button and simultaneously press down the AUTO-M switch for 0.2 s.
• Is there any speaker with no sound?
|
Yes
|
If no sound from some speaker:
• Go to the next step.
If not sound at all:
• Go to the troubleshooting of “No.3 No sound from all speakers”.
|
|
No
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The troubleshooting completed. (The system is normal.)
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||
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2
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• Does the same speaker have no sound if changing the sound source? (Radio, CD)
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Yes
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Go to the next step.
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No
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Replace the audio unit.
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3
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• Turn the ignition switch to the LOCK position.
• Inspect the connection of the audio unit connector (24-pin). (for sound signal line)
• Is the connector connected securely?
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Yes
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Go to the next step.
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No
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Connect the audio unit connector (24-pin) securely.
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4
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• Turn the ignition switch to the LOCK position.
• 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?
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Yes
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Go to the next step.
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No
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Go to Step 6.
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5
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• Inspect the continuity between the following terminals of the audio amplifier wiring harness-side connector (40-pin) and the audio unit wiring harness-side connector (24-pin).
For front speaker (audio unit—audio amplifier)
• Is there continuity?
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Yes
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Go to the next step.
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No
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Repair or replace the related wiring harness between the audio amplifier and the audio unit.
Then go to the next step.
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6
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• Inspect the connection of the audio amplifier connector (40-pin).
• Is the connector connected securely?
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Yes
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Go to the next step.
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No
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Connect the audio amplifier (40-pin) securely.
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7
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• Turn the ignition switch to the LOCK position.
• Disconnect the audio amplifier connector (40-pin).
• Inspect continuity between the following terminals of the audio amplifier connector and speaker connector.
For front speaker (LH)
For front speaker (RH)
For front door speaker (LH)
For front door speaker (RH)
For rear door speaker (LH)
For rear door speaker (RH)
For rear speaker (LH)
For rear speaker (RH)
For center speaker
• Is there continuity?
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Yes
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Go to the next step.
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No
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Repair or replace the repair related wiring harnesses.
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8
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• Turn the ignition switch to LOCK position.
• Disconnect the audio amplifier connector (40-pin).
• Inspect the continuity between the audio amplifier connector and ground:
For front speaker
For front door speaker
For rear door speaker
For rear speaker
For center speaker
• Is there continuity?
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Yes
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Repair or replace the related wiring harness or speaker unit.
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No
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Go to the next step.
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9
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• Remove the suspect speaker.
• Disconnect the speaker connector (2-pin) and inspect the resistance of speaker.
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Yes
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Replace the audio amplifier.
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No
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Replace the speaker.
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