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

Probable cause:

Microphone malfunction, speaker malfunction, DCM malfunction

CAUTION: Before performing diagnosis, refer to "CAUTION" in "General Description". Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>GENERAL DESCRIPTION>CAUTION .

CHECK DTCS .
Read the DTC of [Telematics] using the Subaru Select Monitor. Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .

Are DTCs B2A04, B2A05, B2A06 displayed?

Yes: Perform the diagnosis for the displayed DTC B2A04, B2A05, or B2A06. Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2A04 MIC CIRCUIT . Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2A05 LEFT SPEAKER/AUDIO CIRCUIT . Ref. 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 .
Using the Subaru Select Monitor, check the following items in the [Active Test] of [Telematics]. Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>ACTIVE TEST .
- Speaker ON
Does it sound?

Yes: Go to 4.

No: Go to 3.
CHECK THE SPEAKER .
Check the speaker. Ref. to ENTERTAINMENT & MONITORING>FRONT SPEAKER>INSPECTION .

Is the check result OK?

Yes: Go to 4.

No: Replace the speaker. Ref. to ENTERTAINMENT & MONITORING>FRONT 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 handsfree 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.

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

No: Perform the diagnosis according to inspection for DTC B2A04 MIC CIRCUIT. Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2A04 MIC CIRCUIT .