NO.3 NO SOUND FROM ALL SPEAKERS [ENTIRE AUDIO SYSTEM]
id0903e2803200
Without Bose®
|
3 |
No sound from all speakers |
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|---|---|---|
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Possible DTC |
Using the M-MDS |
U3003:16, U3000:09 |
|
Without using M-MDS (On-board diagnostic test mode) |
09:Er20, 09:Er21 |
|
|
Possible cause
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• Electronic jamming from outside, or inferior condition of broadcasting station radio wave
• Glass antenna malfunction
• Antenna feeder malfunction
• Center roof antenna malfunction
• Speaker muted by Bluetooth system (hands-free telephone (HF/TEL) system) operation
• Poor connection of music device
• Volume adjustment of music device is at minimum
• Poor connection at audio unit connector, terminal damage
• Audio unit malfunction
• Short circuit in wiring harness between audio unit and speaker
• Open circuit in wiring harness between audio unit and speaker
• Short circuit inside speaker
• Speaker malfunction
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Diagnostic procedure
|
STEP |
INSPECTION |
ACTION |
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|---|---|---|---|
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1
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• It sound not output from the speaker only while in radio mode?
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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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2
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• Does noise occur?
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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 8.
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||
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3
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• Can the location where the noise occurs be specified?
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Yes
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The system is normal. Explain to the customer that the noise is caused by radio wave disturbances or broadcast wave conditions from the outside.
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No
|
Go to the next step.
|
||
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4
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• Compare the radio broadcast reception condition on another vehicle of the same model (model/unit) in the location where the noise occurs.
• Compared to another vehicle of the same model, is the reception worse?
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Yes
|
Go to the next step.
|
|
No
|
Go to Step 6.
|
||
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5
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• Inspect the glass antenna and antenna feeder.
• Are the glass antenna and antenna feeder normal?
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Yes
|
Go to the next step.
|
|
No
|
Repair or replace the glass antenna and/or the antenna feeder.
|
||
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6
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• Does the Bluetooth system (hands-free telephone (HF/TEL) system) operate?
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Yes
|
The system is normal. Explain to the customer that the Bluetooth system (hands-free telephone (HF/TEL) system) operates and the speaker is muted.
|
|
No
|
Go to the next step.
|
||
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7
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• Does the AUX mode operate?
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Yes
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Verify the volume of the music device which has been connected. If sound is output, go to the next step.
|
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No
|
Go to the next step.
|
||
|
8
|
• Connect the audio unit connector.
• Inspect the voltage for the power supply line (B+, ACC).
Specification:
Turn the ignition switch to the ON position.: 11.5 V or more
Idle: 12.5 V or more
• Is the voltage normal?
|
Yes
|
Go to the next step.
|
|
No
|
Charge the battery, then go to the next step.
|
||
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9
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• 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.
|
||
|
10
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• Turn the ignition switch to the OFF position.
• 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/tweeter
― Terminal 1A (LH+)—GND
― Terminal 1C (LH-)—GND
― Terminal 1D (RH+)—GND
― Terminal 1F (RH-)—GND
• Is there continuity?
|
Yes
|
Go to the next step.
|
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No
|
Go to Step 13.
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||
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11
|
• Remove the front door speaker.
• Disconnect the front door speaker connector.
• Inspect the continuity between the audio unit wiring harness-side connector terminal and ground:
For front door speaker/tweeter
― Terminal 1A (LH+)—GND
― Terminal 1C (LH-)—GND
― Terminal 1D (RH+)—GND
― Terminal 1F (RH-)—GND
• Is there continuity?
|
Yes
|
Go to the next step.
|
|
No
|
Replace the front door speaker (LH or RH) because there is a short to ground in the front door speaker (LH or RH).
|
||
|
12
|
• Remove the tweeter.
• Disconnect the tweeter connector.
• Inspect the continuity between the audio unit wiring harness-side connector terminal and ground:
For front door speaker/tweeter
― Terminal 1A (LH+)—GND
― Terminal 1C (LH-)—GND
― Terminal 1D (RH+)—GND
― Terminal 1F (RH-)—GND
• Is there continuity?
|
Yes
|
If there is a common connector:If there is no common connector:
Refer to the wiring diagram and verify whether or not there is a common connector between audio unit and front door speaker/tweeter.
• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.
• Repair or replace the malfunctioning part.
• Repair or replace the wiring harness which has a short to ground.
|
|
No
|
Replace the tweeter (LH or RH) because there is a short to ground in the tweeter (LH or RH).
(See TWEETER REMOVAL/INSTALLATION.)
|
||
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13
|
• Inspect the continuity between the audio unit wiring harness-side connector terminal and ground:
For rear door speaker
― Terminal 1S (LH+)—GND
― Terminal 1U (LH-)—GND
― Terminal 1V (RH+)—GND
― Terminal 1X (RH-)—GND
• Is there continuity?
|
Yes
|
Go to the next step.
|
|
No
|
Replace the audio unit.
|
||
|
14
|
• Remove the rear door speaker.
• Disconnect the rear door speaker connector.
• Inspect the continuity between the audio unit wiring harness-side connector terminal and ground:
For rear door speaker
― Terminal 1S (LH+)—GND
― Terminal 1U (LH-)—GND
― Terminal 1V (RH+)—GND
― Terminal 1X (RH-)—GND
• Is there continuity?
|
Yes
|
If there is a common connector:If there is no common connector:
Refer to the wiring diagram and verify whether or not there is a common connector between audio unit and rear door speaker.
• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.
• Repair or replace the malfunctioning part.
• Repair or replace the wiring harness which has a short to ground.
|
|
No
|
Replace the rear door speaker (LH or RH) because there is a short to ground in the rear door speaker (LH or RH).
|
||
With Bose®
|
3 |
No sound from all speakers |
|
|---|---|---|
|
Possible DTC |
Using the M-MDS |
U3003:16, U3000:09 |
|
Without using M-MDS (On-board diagnostic test mode) |
09:Er20, 09:Er21 |
|
|
Possible cause
|
• Electronic jamming from outside, or inferior condition of broadcasting station radio wave
• Glass antenna malfunction
• Antenna feeder malfunction
• Center roof antenna malfunction
• Speaker muted by Bluetooth system (hands-free telephone (HF/TEL) system) operation
• Poor connection of music device
• Volume adjustment of music device is at minimum
• Speaker malfunction
• Audio amplifier malfunction
• Audio unit malfunction
• Open or short circuit in wiring harness between audio amplifier and audio unit
• Poor connection of audio unit or audio amplifier connector, terminal damage
• CAN signal wiring harness malfunction
• Short circuit inside speaker
• Open or short circuit in wiring harness between audio amplifier and speaker
|
|
Diagnostic procedure
|
STEP |
INSPECTION |
ACTION |
|
|---|---|---|---|
|
1
|
• It sound not output from the speaker only while in radio mode?
|
Yes
|
Go to the next step.
|
|
No
|
Go to Step 6.
|
||
|
2
|
• Does noise occur?
|
Yes
|
Go to the next step.
|
|
No
|
Go to Step 8.
|
||
|
3
|
• Can the location where the noise occurs be specified?
|
Yes
|
The system is normal. Explain to the customer that the noise is caused by radio wave disturbances or broadcast wave conditions from the outside.
|
|
No
|
Go to the next step.
|
||
|
4
|
• Compare the radio broadcast reception condition on another vehicle of the same model (model/unit) in the location where the noise occurs.
• Compared to another vehicle of the same model, is the reception worse?
|
Yes
|
Go to the next step.
|
|
No
|
Go to Step 6.
|
||
|
5
|
• Inspect the glass antenna and antenna feeder.
• Are the glass antenna and antenna feeder normal?
|
Yes
|
Go to the next step.
|
|
No
|
Repair or replace the glass antenna and/or the antenna feeder.
|
||
|
6
|
• Does the Bluetooth system (hands-free telephone (HF/TEL) system) operate?
|
Yes
|
The system is normal. Explain to the customer that the Bluetooth system (hands-free telephone (HF/TEL) system) operates and the speaker is muted.
|
|
No
|
Go to the next step.
|
||
|
7
|
• Does the AUX mode operate?
|
Yes
|
Verify the volume of the music device which has been connected. If sound is output, go to the next step.
|
|
No
|
Go to the next step.
|
||
|
8
|
• Connect the audio unit connector.
• Inspect the voltage for the power supply line (B+, ACC).
Specification:
Turn the ignition switch to the ON position.: 11.5 V or more
Idle: 12.5 V or more
• Is the voltage normal?
|
Yes
|
Go to the next step.
|
|
No
|
Charge the battery, then go to the next step.
|
||
|
9
|
• 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.
|
||
|
10
|
• Measure the voltage at the audio amplifier terminal 3A. (8-pin, vehicle harness-side)
• Is the voltage B+?
|
Yes
|
Go to the next step.
|
|
No
|
Repair or replace wiring harness between the audio amplifier and fuse.
Go to the next step.
|
||
|
11
|
• Inspect the connection of audio 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
|
Repair or replace the pins and/or the connector.
|
||
|
12
|
• Turn the ignition switch to the OFF position.
• Disconnect the audio amplifier connector.
• Inspect continuity between the following terminals of the audio amplifier connector and speaker connector.
For front door speaker
― Terminal 3L (LH+)—Terminal B
― Terminal 3N (LH-)—Terminal A
― Terminal 3K (RH+)—Terminal B
― Terminal 3M (RH-)—Terminal A
For front speaker
― Terminal 3B (LH+)—Terminal B
― Terminal 3A (LH-)—Terminal A
― Terminal 3D (RH+)—Terminal B
― Terminal 3F (RH-)—Terminal A
For rear door speaker
― Terminal 3I (LH+)—Terminal B
― Terminal 3G (LH-)—Terminal A
― Terminal 3C (RH+)—Terminal B
― Terminal 3E (RH-)—Terminal A
For rear speaker
― Terminal 4G—Terminal B
― Terminal 4E—Terminal A
― Terminal 4D—Terminal B
― Terminal 4C—Terminal A
For center speaker
― Terminal 3H—Terminal B
― Terminal 3J—Terminal A
• Is there continuity?
|
Yes
|
Go to the next step.
|
|
No
|
If there is a common connector:If there is no common connector:
Refer to the wiring diagram and verify whether or not there is a common connector between audio amplifier connector and speaker connector.
• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.
• Repair or replace the malfunctioning part.
• Repair or replace the wiring harness which has an open circuit.
|
||
|
13
|
• Turn the ignition switch to the OFF position.
• Disconnect the audio amplifier connector.
• Inspect the continuity between the audio amplifier connector and ground:
For front door speaker
― Terminal 3L (LH+)—GND
― Terminal 3N (LH-)—GND
― Terminal 3K (RH+)—GND
― Terminal 3M (RH-)—GND
For front speaker
― Terminal 3B (LH+)—GND
― Terminal 3A (LH-)—GND
― Terminal 3D (RH+)—GND
― Terminal 3F (RH-)—GND
For rear door speaker
― Terminal 3I (LH+)—GND
― Terminal 3G (LH-)—GND
― Terminal 3C (RH+)—GND
― Terminal 3E (RH-)—GND
For rear speaker
― Terminal 4G—GND
― Terminal 4E—GND
― Terminal 4D—GND
― Terminal 4C—GND
For center speaker
― Terminal 3H—GND
― Terminal 3J—GND
• Is there continuity?
|
Yes
|
Go to the next step.
|
|
No
|
Go to Step 15.
|
||
|
14
|
• Disconnect each speaker connector.
• Inspect the continuity between the audio amplifier connector and ground:
For front door speaker
― Terminal 3L (LH+)—GND
― Terminal 3N (LH-)—GND
― Terminal 3K (RH+)—GND
― Terminal 3M (RH-)—GND
For front speaker
― Terminal 3B (LH+)—GND
― Terminal 3A (LH-)—GND
― Terminal 3D (RH+)—GND
― Terminal 3F (RH-)—GND
For rear door speaker
― Terminal 3I (LH+)—GND
― Terminal 3G (LH-)—GND
― Terminal 3C (RH+)—GND
― Terminal 3E (RH-)—GND
For rear speaker
― Terminal 4G—GND
― Terminal 4E—GND
― Terminal 4D—GND
― Terminal 4C—GND
For center speaker
― Terminal 3H—GND
― Terminal 3J—GND
• Is there continuity?
|
Yes
|
If there is a common connector:If there is no common connector:
Refer to the wiring diagram and verify whether or not there is a common connector between audio amplifier connector and speaker connector.
• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.
• Repair or replace the malfunctioning part.
• Repair or replace the wiring harness which has a short to ground.
|
|
No
|
Replace the speaker because a short to ground in the speaker connected to the circuit without continuity can be considered the cause.
|
||
|
15
|
• Turn the ignition switch to the OFF position.
• Disconnect the audio amplifier connector and audio unit connector (24-pin).
• Inspect the continuity between the audio amplifier terminal 2N (16-pin, vehicle harness-side) and audio unit terminal 1J (24-pin, vehicle harness- side).
• Is there continuity?
|
Yes
|
Replace the audio amplifier.
|
|
No
|
If there is a common connector:If there is no common connector:
Refer to the wiring diagram and verify whether or not there is a common connector between audio amplifier terminal 2F (16-pin) and audio unit terminal 2H (24-pin).
• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.
• Repair or replace the malfunctioning part.
• Repair or replace the wiring harness which has an open circuit.
Go to the next step.
|
||
|
16
|
• Is there any sound?
|
Yes
|
The system is normal.
|
|
No
|
Replace the audio amplifier.
|
||