Phone Conversation Is Not Possible. (The Microphone Does Not Respond To A Voice. No Sound Is Heard From The Speaker.)

CHECK DTCS.
Read DTCs of the Telematics. Refer to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC CODE(S) DISPLAY .

Is DTC B2A04, B2A05 or B2A06 displayed?

Yes: Perform the diagnosis for the displayed DTC B2A04, B2A05 or B2A06. Refer to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE(DTC)>DTC B2A04 MIC CIRCUIT . Refer to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE(DTC)>DTC B2A05 LEFT SPEAKER/AUDIO CIRCUIT . Refer to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE(DTC)>DTC B2A06 RIGHT SPEAKER/AUDIO CIRCUIT .

No: Go to 2.
CHECK THE SPEAKER OPERATION.
Perform [Speaker ON] in the telematics system operation check. Refer to TELEMATICS SYSTEM (DIAGNOSTICS)>SYSTEM OPERATION CHECK MODE .

Does it sound?

Yes: Go to 3.

No: Go to 4.
CHECK MICROPHONE.
Perform the microphone voice input.

Is the voice recognized?

Yes: Go to 4.

No: Replace the microphone.
CHECK THE SPEAKER.
Check the speaker.

Is the check result OK?

Yes: Go to 5.

No: Replace the speaker.
CHECK THE TELEPHONE CALL.
1. Place the mobile phone in the vehicle.
2. Establish a Bluetooth connection between the mobile phone in the vehicle and the vehicle unit.
3. Make a call from outside to the mobile phone in the vehicle.
4. Check that a telephone call is available through the in-vehicle microphone with the hands-free function.
Is a telephone call successful?

Yes: The circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

No: Perform the diagnosis of DTC B2A04 MIC CIRCUIT. Refer to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE(DTC)>DTC B2A04 MIC CIRCUIT .