NO.4 NO SOUND FROM SOME SPEAKERS[ENTIRE AUDIO SYSTEM]

id0903e2818100

4

No sound from some speakers/Possible DTC: —
Troubleshooting hints
•  Speaker malfunction (e.g., foreign material penetration, damage)
•  Audio unit malfunction
•  Short circuit inside speaker
•  Open or short circuit in wiring harness between audio unit and speaker

Diagnostic procedure

STEP

INSPECTION

ACTION
1
•  Turn the audio unit on.
•  Press AUDIO CONT button 1 second or more (BAL/FAD cancel mode).
•  Press the POWER button and simultaneously press the AUTO-M button for 1 second.
Note
•  The sounded speaker now changes in the order of left — front speaker, right — front speaker, right — rear speaker and left — rear speaker.
•  Is there any speaker that does not output sound?
Yes
If there is no sound from some speakers:
•  Go to the next step.
If there is no sound at all:
•  Go to the troubleshooting of “No.3 No sound from all speakers”.
No
The troubleshooting is completed.
2
•  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?
Yes
Repair or replace the suspect wiring harness or speaker unit.
Note
•  If there is a short circuit between the speaker harness or the 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 suspect speaker.
•  Disconnect the speaker connector (2-pin) and inspect the resistance of speaker.
•  Is the resistance normal?
Specification
Speaker resistance + wiring harness resistance
Yes
Replace the audio unit.
(See CENTER PANEL UNIT REMOVAL/INSTALLATION.)
(See CENTER PANEL UNIT DISASSEMBLY/ASSEMBLY.)
(See AUDIO UNIT DISASSEMBLY/ASSEMBLY.)
No
Go to the next step.
4
•  Inspect the wiring harness between the audio unit and the suspect speaker.
•  Is there continuity?
Yes
Go to the next step.
No
Repair or replace the suspect wiring harness.
5
•  Inspect the suspect speaker.
•  Is the speaker normal?
Note
•  If the speaker lead wire contacts to either ground or vehicle frame, replace the speaker.
Yes
Replace the audio unit.
(See CENTER PANEL UNIT REMOVAL/INSTALLATION.)
(See CENTER PANEL UNIT DISASSEMBLY/ASSEMBLY.)
(See AUDIO UNIT DISASSEMBLY/ASSEMBLY.)
No
Replace the speaker.
(See FRONT DOOR SPEAKER REMOVAL/INSTALLATION.)
(See REAR DOOR SPEAKER REMOVAL/INSTALLATION.)
(See FRONT TWEETER REMOVAL/INSTALLATION.)
(See WOOFER REMOVAL/INSTALLATION.)