NO.3 NO SOUND FROM ALL SPEAKERS [ENTIRE AUDIO SYSTEM]

id0903e2803200


Vehicles Without Bose®

3

No sound from all speakers/Possible DTC: 10:Er07, 10:Er10, 22:Er07, 22:Er10, 09:Er20, 09:Er21
Troubleshooting hints
•  Speaker malfunction (e.g., any foreign material, broken)
•  Audio unit malfunction
•  Short circuit in wiring harness between audio unit and speaker
•  Short circuit inside speaker

Diagnostic procedure

STEP

INSPECTION

ACTION
1
•  Press AUDIO CONT button 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
•  Turn the ignition switch to the LOCK position.
•  Remove the audio unit.
•  Disconnect the audio connector (24-pin).
•  Inspect the continuity between the audio unit wiring harness-side connector terminal and ground:
For front door speaker
―  Terminal A (L+) — GND
―  Terminal C (L-) — GND
―  Terminal D (R+) — GND
―  Terminal F (R-) — GND
For rear door speaker
―  Terminal S (L+) — GND
―  Terminal U (L-) — GND
―  Terminal V (R+) — GND
―  Terminal X (R-) — GND
―  Is there continuity?
Yes
Repair or replace the suspect wiring harness or speaker unit.
Note
•  If there is a short circuit between the speaker harness or speaker lead wire and ground, the protector circuit inside the audio unit operates to cut the sound.
No
Go to the next step.
3
•  Remove the speaker.
•  Disconnect the speaker connector (2-pin).
•  Inspect the continuity between the speaker wiring harness-side connector (2-pin) terminal and ground:
For each speaker
―  Terminal A — GND
―  Terminal B — GND
•  Is there continuity?
Yes
Replace the speaker.
No
Replace the audio unit.


Vehicles With Bose®

3

No sound from all speakers/Possible DTC: 10:Er07, 10:Er10, 22:Er07, 22:Er10, 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
•  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 A (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.
(See AUDIO AMPLIFIER REMOVAL/INSTALLATION.)
Go to the next step.
3
•  Is there any sound?
Yes
The system is normal.
No
Go to the next step.
4
•  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)
―  Terminal 2A (40-pin)—Terminal A (speaker)
―  Terminal 2B (40-pin)—Terminal B (speaker)
For front speaker (RH)
―  Terminal 2F (40-pin)—Terminal A (speaker)
―  Terminal 2D (40-pin)—Terminal B (speaker)
For front door speaker (LH)
―  Terminal 2N (40-pin)—Terminal A (speaker)
―  Terminal 2I (40-pin)—Terminal B (speaker)
For front door speaker (RH)
―  Terminal 2M (40-pin)—Terminal A (speaker)
―  Terminal 2R (40-pin)—Terminal B (speaker)
For rear door speaker (LH)
―  Terminal 2G (40-pin)—Terminal A (speaker)
―  Terminal 2I (40-pin)—Terminal B (speaker)
For rear door speaker (RH)
―  Terminal 2E (40-pin)—Terminal A (speaker)
―  Terminal 2C (40-pin)—Terminal B (speaker)
For rear speaker (LH)
―  Terminal 2J (40-pin)—Terminal A (speaker)
―  Terminal 2H (40-pin)—Terminal B (speaker)
For rear speaker (RH)
―  Terminal 1F (40-pin)—Terminal A (speaker)
―  Terminal 1H (40-pin)—Terminal B (speaker)
For center speaker
―  Terminal 1E (40-pin)—Terminal A (speaker)
―  Terminal 1G (40-pin)—Terminal B (speaker)
•  Is there continuity?
Yes
Go to the next step.
No
Repair or replace the repair related wiring harnesses.
5
•  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
―  Terminal 2A (40-pin, FRONT IP L SP-)—GND
―  Terminal 2B (40-pin, FRONT IP L SP+)—GND
―  Terminal 2F (40-pin, FRONT IP R SP-)—GND
―  Terminal 2D (40-pin, FRONT IP R SP+)—GND
For front door speaker
―  Terminal 2N (40-pin, FRONT DOOR L SP-)—GND
―  Terminal 2I (40-pin, FRONT DOOR L SP+)—GND
―  Terminal 2M (40-pin, FRONT DOOR R SP-)—GND
―  Terminal 2R (40-pin, FRONT DOOR R SP-)—GND
For rear door speaker
―  Terminal 2G (40-pin, REAR DOOR L SP-)—GND
―  Terminal 2I (40-pin, REAR DOOR L SP+)—GND
―  Terminal 2E (40-pin, REAR DOOR R SP-)—GND
―  Terminal 2C (40-pin, REAR DOOR R SP+)—GND
For rear speaker
―  Terminal 2J (40-pin, D-PILLAR L SP-)—GND
―  Terminal 2H (40-pin, D-PILLAR L SP+)—GND
―  Terminal 1F (40-pin, D-PILLAR R SP-)—GND
―  Terminal 1H (40-pin, D-PILLAR R SP+)—GND
For center speaker
―  Terminal 1E (40-pin, DASH CENTER -)—GND
―  Terminal 1G (40-pin, DASH CENTER +)—GND
•  Is there continuity?
Yes
Repair or replace the related wiring harness or speaker unit.
Note
•  If there is a short circuit between the speaker harness or speaker lead wire and ground, the protector circuit inside the audio unit operates to cut the sound.
No
Go to the next step.
6
•  Turn the ignition switch to LOCK position.
•  Disconnect the audio amplifier connector (40-pin) and audio unit connector (24-pin).
•  Inspect the continuity between the audio amplifier terminal 3N (40-pin, vehicle harness-side) and audio 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.
Then go to the next step.
7
•  Is there any sound?
Yes
The system is normal.
No
Replace the audio amplifier.