Unit Check (Quick Check): HFL
This diagnosis checks first whether the HandsFreeLink control unit is connecting to the audio-navigation unit via the GA-Net. If the HFL and GA-NET shows NG, go to HandsFreeLink control unit Input Test (see CONTROL UNIT INPUT TEST ). Then checking the HandsFreeLink control unit status. If the HFL shows HFL DTC (B1792), go to indicated HFL DTC TROUBLESHOOTING .