Inspection Procedure 2: During the conversation with the hands free cellular phone system, the speaker’s voice cannot be heard by the other party.


FUNCTION



COMMENTS ON TROUBLE SYMPTOM



PROBABLE CAUSES



  • Malfunction of the hands free-ECU
  • Malfunction of the microphone unit
  • Damaged harness wires and connectors

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

STEP 2. Check whether the diagnosis code is set.
Check the diagnosis code is set to the hands free-ECU.
(1)Erase the diagnosis code.
(2)Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
(3)Check if diagnosis code is set.

Q. Is the diagnosis code set?
Diagnose the hands free-ECU (Refer to ).
Go to Step 3.

STEP 3. Temporarily replace the microphone unit, and check the trouble symptom.
Check that the normal conversation is possible with the hands free system.

Q. Is the check result normal?
Replace the microphone unit.
Replace the hands free-ECU.