Inspection Procedure 3

INSPECTION PROCEDURE 3: During The Conversation With The Hands Free Cellular Phone System, The Voice Of Other Party Cannot Be Heard.

CAUTION: Before replacing the module, ensure that the power supply circuit, the ground circuit and the communication circuit are normal.

FUNCTION
During the conversation with the hands free cellular phone system, the voice signal of other party is transmitted from the cellular phone to the hands free module. Then, the signal is transmitted from the hands free module to the radio and CD player [vehicles without MMCS] or multivision display [vehicles with MMCS], and then output from the speaker.


TROUBLE JUDGMENT CONDITIONS
During the conversation with the hands free cellular phone system, if the voice of other party cannot be heard, the hands free module, or the radio and CD player [vehicles without MMCS] or multivision display [vehicles with MMCS] may be defective.

TROUBLESHOOTING HINTS
- The hands free module may be defective.
- The radio and CD player [vehicles without MMCS] or multivision display [vehicles with MMCS] may be defective.

DIAGNOSIS

STEP 1. Check the cellular phone.

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

Q: Is it possible to use the cellular phone normally?

YES : Go to Step 2.

NO : Repair or replace the cellular phone.

STEP 2. Check the radio and CD player [vehicles without MMCS] or multivision display [vehicles with MMCS].

Check that the sound of radio and CD player [vehicles without MMCS] or multivision display [vehicles with MMCS] is output normally from the speaker.

Q: Is the sound of radio and CD player [vehicles without MMCS] or multivision display [vehicles with MMCS] output normally from the speaker?

YES : Replace the hands free module.

NO : Diagnose the radio and CD player [vehicles without MMCS] or multivision display [vehicles with MMCS] (Refer to Trouble Symptom Chart [vehicles without MMCS] or Trouble Symptom Chart [vehicles with MMCS]).