Inspection Procedure 3: During the conversation with the hands free system, the voice of other party cannot be heard.




FUNCTION




COMMENTS ON TROUBLE SYMPTOM




PROBABLE CAUSES



  • Malfunction of the hands free-ECU
  • Malfunction of the audio unit <vehicles without MMCS> or audio visual navigation unit <vehicles with MMCS>

DIAGNOSIS PROCEDURE


STEP 1. Check the cellular phone.


Check that the cellular phone can be used normally as a unit.

Q. Is the check result normally?

Go to Step 2.
Repair or replace the cellular phone.

STEP 2. Check the audio unit <vehicles without MMCS> or audio visual navigation unit <vehicles with MMCS>.


Check that the sound of audio unit <vehicles without MMCS> or audio visual navigation unit <vehicles with MMCS> is output normally from the speaker.

Q. Is the check result normally?

Replace the hands-free-ECU.
Diagnose the audio unit <vehicles without MMCS> or audio visual navigation unit <vehicles with MMCS>. Refer to Radio and CD player - Diagnosis <vehicles without MMCS> or MMCS - Diagnosis <vehicles with MMCS>.