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 DTC B2A04, B2A05 and 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.

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 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 according to inspection for DTC B2A04: MIC CIRCUIT. Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B2A04: MIC CIRCUIT .