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

id0903e2818100

4

No sound from some speakers
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
•  Poor connection of audio unit connector, terminal damage

Diagnostic procedure

STEP

INSPECTION

ACTION
1
•  Verify that the sound is output from the speaker with the speaker connected one at a time.
•  Is there any speaker that does not output sound?
Yes
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”.
No
The troubleshooting is completed.
2
•  Turn the ignition switch to the LOCK position.
•  Disconnect the audio unit connector (16-pin).
•  Inspect the continuity between the audio unit wiring harness-side connector (16-pin) terminal and ground.
•  Is there the 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 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.
No
Go to the next step.
4
•  Inspect the wiring harness between the audio unit and the suspect speaker.
•  Is there the 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.
No
Replace the speaker.