Mic/STRG SW
This diagnosis allows you to independently test the microphone and the voice control switch buttons (TALK, BACK, PICK UP, and HANG UP).
They are used to activate the voice control system. The microphone is located near the map light in the roof console. The microphone can now isolate the driver's voice even when there is noise or other conversations in the vehicle. To properly check the microphones, make sure you are sitting in the driver's seat.
This diagnosis checks first check if the HandsFreeLink control unit is connected to the audio-navigation unit via the GA-Net. If the Mic and STRG SW shows NG, go to HandsFreeLink control unit Input Test (see CONTROL UNIT INPUT TEST ). Then checking whether the microphone and the voice control switch are connected to the HandsFreeLink control unit. If the Mic and/or STRG SW shows HFL DTCs (B1775, B1776, B1779, and/or B1780), go to the indicated HFL DTC TROUBLESHOOTING .
- Press the TALK button, wait unit you hear a beep, and in a normal voice say "testing". The TALK indicator on the screen should momentarily turn green, and the text Now Recording... should appear in yellow. If the talk indicator shown on the screen does not briefly turn green when you press the TALK button, do the Voice Control Switch Test (see VOICE CONTROL SWITCH TEST ). If there is no Mic Level movement when you speak, then you should check the wires running from the microphone in the roof console to the HandsFreeLink control unit and the audio-navigation unit. If the wires are OK, the microphone must be faulty, replace the front HFL-navigation-ANC microphone located in the roof console (see FRONT HFL-NAVIGATION-ANC MICROPHONE REMOVAL/INSTALLATION ).
- Press the BACK, PICK UP, HANG UP buttons. This should cause the each indicator on the screen to momentarily turn green. If it does not briefly turn green, do the Voice Control Switch Test (see VOICE CONTROL SWITCH TEST ).