NO.3 NO SOUND FROM ALL SPEAKERS [AUDIO]

id0903e1803200

3

No sound from all speakers / Possible DTC: 09:Er20, 09:Er21, 10:Er07, 22:Er07,

Troubleshooting hints
•  Speaker malfunction (e.g., foreign material penetration, damage)
•  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 switch for 1 s or more.
•  Play the CD or Radio.
•  Adjust the volume between “10” and “15”.
•  Is there sound?
Note
•  Press the MENU switch for approx. 1 s or more to initialize the sound adjustment value, then start the inspection.
Yes
The system is normal.
No
Go to the next step.
2
•  Turn the ignition switch to the LOCK position.
•  Remove the center panel unit.
•  Disconnect the audio connector (24-pin).
•  Inspect the continuity between the audio unit wiring harness-side connector terminal and ground:
For front door speakers
―  Terminal A (LH+)—ground
―  Terminal C (LH-)—ground
―  Terminal D (RH+)—ground
―  Terminal F (RH-)—ground
For rear door speakers(5HB)/rear speakers (3HB)
―  Terminal S (LH+)—ground
―  Terminal U (LH-)—ground
―  Terminal V (RH+)—ground
―  Terminal X (RH-)—ground
―  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 (4-pin).
•  Inspect the continuity between the speaker wiring harness-side connector (4-pin) terminal and ground:
For each speaker
―  Terminal B—ground
―  Terminal C—ground
•  Is there continuity?
Yes
Replace the speaker.
No
Replace the audio unit.
(See CENTER PANEL UNIT DISASSEMBLY/ASSEMBLY.)